S-8363 Series
www.ablicinc.com
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz
PWM / PFM SWITCHABLE SWITCHING REGULATOR
© ABLIC Inc., 2010 Rev.2.0_02
1
The S-8363 Series is a CMOS step-up switching regulator which consists of a reference voltage source, an oscillation
circuit, an error amplifier, a phase compensation circuit, a current limit circuit, and a start-up circuit.
Due to the operation of the PWM / PFM switching control, pulses are skipped under the light load operation and the
S-8363 Series prevents decrease in efficiency caused by IC’s operating current.
The S-8363 Series is capable of start-up from 0.9 V (IOUT = 1 mA) by the start-up circuit, and is suitable for applications
which use one dry cell.
The output voltage is freely settable from 1.8 V to 5.0 V by external parts.
Ceramic capacitors can be used for output capacitor. Small packages SNT-6A and SOT-23-6 enable high-density
mounting.
Features
Low operation voltage : Start-up from 0.9 V (IOUT = 1 mA) guaranteed
Oscillation frequency : 1.2 MHz
Input voltage range : 0.9 V to 4.5 V
Output current : 300 mA (VIN = 1.8 V, VOUT = 3.3 V)
Reference voltage : 0.6 V2.5%
Efficiency : 85%
Soft start function : 1.2 ms typ.
Low current consumption : During switching-off, 95 A typ.
Duty ratio : PWM / PFM switching control
max.88%
Power-off function : Current consumption during power-off 3.0 A max.
Current limit circuit : limits the peak value of inductor current
Nch power MOS FET ON resistance : 0.25 typ.
Start-up function : Operation with fixed duty pulse under the VOUT voltage of 1.4 V or less
Lead-free, Sn 100%, halogen-free*1
*1. Refer to “ Product Name Structure” for details.
Applications
MP3 players, digital audio players
Digital cameras, GPS, wireless transceiver
Portable devices
Packages
SNT-6A
SOT-23-6
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STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
S-8363 Series Rev.2.0_02
2
Block Diagram
Error Amplifier
CIN
VIN
VOUT
VOUT
CONT
VSS
VIN
ON/OFF
Internal
Power Supply
ON/OFF
Circuit
Reference
Voltage
Source
PWM
Comparator
V
IN
V
OUT
R
FB2
R
FB1
SD
FB
Current
Limit Circuit
Oscillation
Circuit
SLOPE
Compensation
STU Mode
Circuit
MUX
Start-up
Circuit
L = 2.2 H
C
OUT
10 F
Switching
Control
Circuit
C
FB
Figure 1
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
Rev.2.0_02 S-8363 Series
3
Product Name Structure
Users can select the packages for the S-8363 Series. Refer to “1. Product name” regarding the contents of product
name, “2. Package” regarding the package drawings and “3. Product list” regarding the product type.
1. Product name
S-8363B - xxxx U 2
Environmental code
U: Lead-free (Sn 100%), halogen-free
Package name (abbreviation) and IC packing specification
*1
I6T1: SNT-6A, Tape
M6T1: SOT-23-6, Tape
*1. Refer to the tape specification.
2. Package
Package name Drawing code
Package Tape Reel Land
SNT-6A PG006-A-P-SD PG006-A-C-SD PG006-A-R-SD PG006-A-L-SD
SOT-23-6 MP006-A-P-SD MP006-A-C-SD MP006-A-R-SD
3. Product list
Table 1
SNT-6A SOT-23-6
S-8363B-I6T1U2 S-8363B-M6T1U2
Remark Please select products of environmental code = U for Sn 100%, halogen-free products.
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
S-8363 Series Rev.2.0_02
4
Pin Configurations
SNT-6A
Top view
1
2
3 4
6
5
Table 2 SNT-6A
Pin No. Symbol Description
1
FB Output voltage feedback pin
2
VSS GND pin
3
CONT External inductor connection pin
4
VIN IC power supply pin
5
VOUT Output voltage pin
Figure 2 6
OFF/ON
Power-off pin
“H” : Power-on (normal operation)
“L” : Power-off (standby)
6 4
1 3 2
SOT-23-6
Top view
5
Table 3 SOT-23-6
Pin No. Symbol Description
1
OFF/ON
Power-off pin
“H” : Power-on (normal operation)
“L” : Power-off (standby)
2
VOUT Output voltage pin
3
VIN IC power supply pin
4
CONT External inductor connection pin
5
VSS GND pin
6
FB Output voltage feedback pin
Figure 3
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
Rev.2.0_02 S-8363 Series
5
Absolute Maximum Ratings
Table 4 Absolute Maximum Ratings
(Ta = 25C, VSS = 0 V unless otherwise specified)
Item Symbol Absolute Maximum Ratings Unit
VIN pin voltage VIN V
SS0.3 to VSS5.0 V
VOUT pin voltage VOUT V
SS0.3 to VSS6.0 V
FB pin voltage VFB V
SS0.3 to VOUT0.3 V
CONT pin voltage VCONT V
SS0.3 to VSS6.0 V
OFFON/ pin voltage OFF/ONVVSS0.3 to VIN0.3 V
Power Dissipation SNT-6A PD 400*1 mW
SOT-23-6 650*1 mW
Operating ambient temperature To
pr
40 to 85 C
Storage temperature Tst
g
40 to 125 C
*1. When mounted on board
[Mounted board]
(1) Board size : 114.3 mm 76.2 mm t1.6 mm
(2) Name : JEDEC STANDARD51-7
Caution The absolute maximum ratings are rated values exceeding which the product could suffer physical
damage. These values must therefore not be exceeded under any conditions.
050
100
150
400
200
0
Power Dissipation (P
D
) [mW]
Ambient Temperature (Ta) [C]
700
300
100
SNT-6A
SOT-23-6
500
600
Figure 4 Package Power Dissipation (When Mounted on Board)
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
S-8363 Series Rev.2.0_02
6
Electrical Characteristics
Table 5 Electrical Characteristics
(VIN = 1.8 V, VOUT = 3.3 V, Ta = 25C unless otherwise specified)
Item Symbol Conditions Min. Typ. Max. Unit Test
Circuit
Operating start voltage*1 VST IOUT = 1 mA, VOUT
(
S
)
*2 = 3.3 V 0.9 V 2
Operating input voltage VIN 4.5 V 2
Output voltage range VOUT
(
R
)
1.8 5.0 V 2
FB voltage VFB 0.585 0.600 0.615 V 1
FB voltage temperature
coefficient
VFB
Ta
Ta = 40C to 85C ±100 ppm/C1
FB pin input current IFB V
OUT = 1.8 V to 5.5 V, FB pin 0.1 ＋0.1 A 1
Current consumption during
operation
IIN1 During switching, at no load
VFB = VFB(S)*3 0.95
6 15 A 1
ISS1 450 650 A 1
Current consumption during
switching off
IIN2 During switching stop
VFB = VFB(S) 1.1
6 15 A 1
ISS2 95 150 A 1
Current consumption during
power-off ISSS OFF/ONV= 0 V,
VIN = VOUT = 4.5 V 3.0 A 1
Oscillation frequency fOSC 1.0 1.2 1.4 MHz 2
Maximum duty ratio MaxDuty VFB = VFB
(
S
)
0.95 82 88 94 % 2
PWM / PFM switching duty ratio PFMDuty 13 % 2
Power MOS FET ON resistance*4 RNFET 0.25 1
Power MOS FET leakage current ILSW OFF/ONV= 0 V 0.01 0.5 A 1
Limited current ILIM
0.9 1.1 1.3 A 3
High level input voltage VSH VIN = 1.8 V to 4.5 V, OFFON/ pin 0.75 V 1
Low level input voltage VSL VIN = 1.8 V to 4.5 V, OFFON/ pin 0.25 V 1
High level input current ISH VIN = 1.8 V to 4.5 V, OFFON/ pin 0.1 0.1 A 1
Low level input current ISL VIN = 1.8 V to 4.5 V, OFFON/ pin 0.1 0.1 A 1
Soft-start time*5 tSS 0.6 1.2 1.8 ms 2
*1. This is the guaranteed value measured with external parts shown in “Table 6 External Parts List” and with test
circuits shown in Figure 6. The operating start voltage varies largely depending on diode’s forward voltage. Perform
sufficient evaluation with actual application.
*2. VOUT(S) can be set by the ratio of VFB value and the output voltage setting resistors (RFB1, RFB2). For details, refer to “
External Parts Selection”.
*3. VFB(S) is a setting value for FB voltage.
*4. Power MOS FET ON resistance largely varies depending on the VOUT voltage.
*5. This is when the VOUT voltage startups from the STU release voltage or more. The soft-start time largely varies
depending on the load current and the input voltage when the S-8363 Series startups from the STU release voltage
or less, because the S-8363 Series once enters the start-up mode. Refer to “ 2. Low voltage start-up” for STU
release voltage.
External Parts List When Measuring Electrical Characteristics
Table 6 External Parts List
Element name Symbol Constants Manufacturer Part number
Inductor L 2.2 H TDK Corporation VLF302510
Diode SD
－ TOSHIBA CORPORATION CRS08
Input capacitor CIN 1 F TAIYO YUDEN Co., Ltd. EMK107B7105KA
Output capacitor COUT 10 F TAIYO YUDEN Co., Ltd. LMK212BJ106KD
FB pin capacitor CFB 47 pF TAIYO YUDEN Co., Ltd. UMK105CH470JV
Output voltage setting resistor 1 RFB1 68 k ROHM Co., Ltd. MCR03 series
Output voltage setting resistor 2 RFB2 15 k ROHM Co., Ltd. MCR03 series
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
Rev.2.0_02 S-8363 Series
7
Test Circuits
1.
S-8363
Series
A
C
IN
CONT
FB
VSS
VIN
A
ON/OFF
VOUT
A
C
OUT
AA
Figure 5
2.
S-8363
Series
C
IN
CONT
FB
VSS
VIN
ON/OFF
↓
L
R
FB1
R
FB2
C
FB
C
OUT
V
SD V
OUT
I
OUT
VOUT
Figure 6
3.
CONT
FB
VSS
ON/OFF
C
OUT
VOUT
C
OUT
C
IN
S-8363
Series
VIN
Figure 7
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
S-8363 Series Rev.2.0_02
8
Operation
1. Switching control method
The S-8363 Series switching regulator automatically switches between the pulse width modulation method (PWM)
and pulse frequency modulation method (PFM) according to the load current.
A low ripple power can be supplied by operating on PWM control for which the pulse width changes up to 88% in
the range where the output load current is large.
The S-8363 Series operates on PFM control when the output load current is small and the pulses are skipped
according to the amount of the load current. Therefore, the oscillation circuit intermittently oscillates, reducing the
self-current consumption. This prevents decrease in efficiency when the output load current is small. The ripple
voltage during the PFM control is very small, so that the S-8363 Series realizes high efficiency and the low-noise
power supply.
The point at which PWM control switches to PFM control varies depending on the external element (inductor, diode,
etc.), input voltage value, and output voltage value, and this method achieves high efficiency in the output load
current of about 100 A.
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
Rev.2.0_02 S-8363 Series
9
2. Low voltage start-up
2. 1 Start-up circuit
The S-8363 Series can startup from 0.9 V. When the VOUT voltage at OFF/ON = “H” does not reach the STU
release voltage, the start-up circuit starts the operation and outputs the fixed duty pulse to the CONT pin. By
this, the VOUT voltage starts step-up. After that, the VOUT voltage reaches the STU release voltage and the STU
mode circuit is set in STU release condition, therefore, the switching control circuit starts stable operation due
to the soft-start function. Simultaneously, the start-up circuit is set in disable condition, so that the S-8363
Series prevents excessive current consumption.
2. 2 Start-up mode (STU mode) circuit
The STU mode circuit monitors the VOUT voltage, and switches the operation modes between start-up period
and normal control period of the switching control circuit. The STU release voltage is internally fixed at 1.4 V
(typ.), and has hysteresis of approx. 0.15 V. When the VOUT voltage decreases to 1.25 V (typ.) from release
condition, the STU mode circuit is set in the STU detection condition, shifting to the start-up period. Several s
to several ten s is taken to shift from STU release to PWM release. During this the step-up operation is not
performed, therefore, the VOUT voltage may largely decrease depending on the size of load.
During applying OFF/ON = “L”, the STU mode circuit is set in disable condition, so that the S-8363 Series
prevents excessive current consumption.
CONT
VOUT
MUX
Start-up
Circuit
VIN
VOUT
VIN
STU Mode Circuit
V
D
Load
SD
L = 2.2 H
C
OUT
10 F
Switching
Control Circuit
VSS
Figure 8 Start-up Circuit
Time [s]
Switching delay
Output voltage
(VOUT)
Start-up period
CONT voltage
(VCONT)
PWM control period
STU detection
STU release
Figure 9 Start-up Sequence
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
S-8363 Series Rev.2.0_02
10
2. 3 Schottky barrier diode
A schottky barrier diode (SD) is necessary to operate the S-8363 Series. The VOUT pin also works as the
power supply pin. The voltage applied on the VOUT pin when OFF/ON = “L” is VIN VD. VD is forward voltage
for step-down of SD, and largely varies depending on the forward current If of SD and ambient temperature, but
Vd is approx. 0.2 V to 0.5 V.
When the S-8363 Series startups from 0.9 V, use a SD with specially low VD. When using CRS08 for the
S-8363 Series, start-up is guaranteed when Ta = 25C and a load current of 1 mA.
Satisfy the following conditions when using other SDs.
Low forward voltage (VD)
High switching speed
Reverse withstand voltage of VOUT + spike voltage or more
Rated current of IPK or more
Table 7 Typical Schottky Diodes
Manufacturer Name
TOSHIBA CORPORATION CRS02
CRS08
ROHM Co., Ltd.
RB161M-20TR
RB051LA-40TR
RB070M-30TR
RB161SS-20T2R
Remark Generally, in diodes with low forward volage VD, reverse leakage current Ir tends to increases.
Especially, increase of Ir in high temperature is significant. To prevent decrease in efficiency, choose a
diode with low Ir when low voltage start-up is unnecessary.
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
Rev.2.0_02 S-8363 Series
11
3. Soft-start function
The S-8363 Series has the built-in soft-start circuit. When power-on (connecting OFF/ON to VIN) or after
start-up at OFF/ON = “H”, the output voltage (VOUT) gradually rises, suppressing rush current and overshoot of
the output voltage. In the S-8363 Series, the soft-start time (tss) is from start-up to the time to reach 90% of the
VOUT output voltage setting value (VOUT(S)). A reference voltage adjustment method is adopted as the soft-start
method, the reference voltage gradually rises from 0 V simultaneously with start of the soft-start. The soft-start
circuit has two operation modes which is selected according to the VOUT voltage at start-up.
3.1 VOUT voltage at start-up STU release voltage
The soft-start starts when the reference voltage gradually rises after OFF/ON = “H”.
Reference voltage
from
error amplifier
Soft-start time (t
ss
)
Time [s]
0 V
0 V
V
OUT
0.90
0 V
Output voltage
(V
OUT
)
Input voltage
(V
IN
)
Soft-start period
ON/OFF
voltage
STU release
0 V
Figure 10
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
S-8363 Series Rev.2.0_02
12
3. 2 VOUT voltage at start-up STU release voltage
After OFF/ON =“H”, step-up starts by the start-up operation. When the VOUT voltage reaches the STU release
voltage, the soft-start starts.
Since the length of the start-up period largely varies depending on the input voltage, load current, external parts
and ambient temperature, the soft-start time varies according to them. Perform sufficient evaluation with actual
application.
Reference voltage
from
error amplifier
Soft-start time (t
ss
)
Time [s]
0 V
0 V
V
OUT
0.90
0 V
Output voltage
(V
OUT
)
Input voltage
(V
IN
)
Soft-start period
ON/OFF
voltage
Start-up period
STU release
0 V
Figure 11
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
Rev.2.0_02 S-8363 Series
13
3. 3 Condition of performing soft-start again
The condition to reset after the reference voltage once rises (reference voltage from error amplifier = 0 V) is to set
the OFF/ON pin voltage to “L”. Setting OFF/ON = “H” starts soft-start again. When the VOUT voltage drops and
decreases more than the STU detection voltage by an overload, the soft-start circuit shifts to the start-up period.
When the VOUT voltage is restored by releasing overload, the soft-start function is performed.
If the VOUT voltage is not decreased less than the STU detection voltage, the soft-start function is not performed
when restoration.
Reference
voltage from
error amplifier
0 V
0 V
Output voltage(V
OUT
)
ON/OFF
voltage
Time [s]
0 V
STU release
STU detection
<1> Start-up period
<2> Soft-start period
<3> Normal operation period
<4> Reset period
<1> <1> <1> <2> <2> <2><3> <3> <4><4>
0 A
Load current
(I
OUT
)
V
OUT(S)
Figure 12 Reset Condition for Soft-Start
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
S-8363 Series Rev.2.0_02
14
4. Power-off pin
This pin stops or starts step-up operations.
When the OFF/ON pin is set to the low level, the internal driver of the CONT pin is turned off and all internal circuits
stop substantially reducing the current consumption.
The OFF/ON pin is set up as shown in Figure 13 and is internally pulled down by using the depression transistor,
so all circuits stop even if this pin is floating. Do not apply a voltage of between 0.25 V and 0.75 V to
the OFF/ON pin because applying such a voltage increases the current consumption. If the OFF/ON pin is not used,
connect it to the VIN pin.
Table 8
OFFON/ pin CR oscillation
circuit Output voltage
“H” Operates Set value
“L” Stops VIN VD
VIN
ON/OFF
VSS
VIN
Figure 13
5. Current limit circuit
A current limit circuit is built in the S-8363 Series.
The current limit circuit monitors the current that flows in the Nch power MOS FET and limits current in order to
prevent thermal destruction of the IC due to an overload or magnetic saturation of the inductor.
When a current exceeding the current limit detection value flows in the Nch power MOS FET, the current limit
circuit operates and turns off the Nch power MOS FET since the current limit detection until one clock of the
oscillator ends. The Nch power MOS FET is turned on in the next clock and the current limit circuit resumes
current detection operation. If the value of the current that flows in the Nch power MOS FET remains the current
limit detection value or more, the current limit circuit functions again and the same operation is repeated. Once
the value of the current that flows in the Nch power MOS FET is lowered up to the specified value, the normal
operation status restores.
The current limit detection value is fixed to 1.1 A (typ.) in the IC. However, under the condition that ON duty is
small, between the detection delay time of the current limit circuit and the ON time of the Nch power MOS FET,
the difference is small. Therefore, the current value which is actually limited is increased. Usually, when the
difference between the VIN pin and VOUT pin is small, on duty is decreased and the limited current value is
increased.
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
Rev.2.0_02 S-8363 Series
15
Operation Principles
The S-8363 Series is a step-up switching regulator. Figure 14 shows the basic circuit diagram.
Step-up switching regulators start current supply by the input voltage (VIN) when the Nch power MOS FET is turned
on and holds energy in the inductor at the same time. When the Nch power MOS FET is turned off, the CONT pin
voltage is stepped up to discharge the energy held in the inductor and the current is discharged to VOUT through the
diode. When the discharged current is stored in COUT, a voltage is generated, and the potential of VOUT increases
until the voltage of the FB pin reaches the same potential as the internal reference voltage.
For the PWM control method, the switching frequency (fOSC) is fixed and the VOUT voltage is held constant
according to the ratio of the ON time and OFF time (ON duty) of the Nch power MOS FET in each period.
In the PWM control method, the VOUT voltage is held constant by controlling the ON time.
In the PFM control method, the Nch power MOS FET is turned on by fixed duty. When energy is discharged to VOUT
once and the VOUT potential exceeds the set value, the Nch power MOS FET stays in the off status until VOUT
decreases to the set value or less due to the load discharge. Time VOUT decreases to the set value or less depends
on the amount of load current, so, the switching frequency varies depending on this current.
VSS
FB
CONT
COUT
RL
VOUT
SD
IOUT
I2
VIN
L
I1
Nch power
MOS FET
Figure 14 Basic Circuit of Step-up Switching Regulator
The ON duty in the current continuous mode can be calculated by using the equation below. Use the S-8363 Series
in the range where the ON duty is less than the maximum duty.
The maximum duty is 88% (typ.).
ON duty = ()
1 VIN
VOUT + VD*1 100 [%]
*1. VD : Forward voltage of diode
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
S-8363 Series Rev.2.0_02
16
1. Continuous current mode
The following explains the current that flows into the inductor when the step-up operation stabilizes in a certain
status and IOUT is sufficiently large.
When the Nch power MOS FET is turned on, current (I1) flows in the direction shown in Figure 14. The inductor
current (IL) at this time gradually increases in proportion with the ON time (tON) of the Nch power MOS FET, as
shown in Figure 15.
Current change of inductor within tON :
IL(ON) = IL max. IL min.
=
VIN
L tON
When the Nch power MOS FET is turned off, the voltage of the CONT pin is stepped up to VOUT + VD and the
voltage on both ends of the inductor becomes VOUT + VD VIN. However, it is assumed here that VOUT >> VD and VD
is ignored.
Current change of inductor within tOFF :
IL(OFF) = VOUT VIN
L tOFF
The input power equals the output power in an ideal situation where there is no loss by components.
IIN(AV) :
PIN = POUT
IIN(AV) VIN = IOUT VOUT
IIN(AV) = VOUT
VIN IOUT ....................... (1)
The current that flows in the inductor consists of a ripple current that changes due to variation over time and a
direct current.
From Figure 15 :
IIN(AV) :
IIN(AV) = IIN(DC) +
IL
2
= IIN(DC) +
VOUT VIN
2 L tOFF
= IIN(DC) +
VIN
2 L tON .............. (2)
Above, the continuous mode is the operation mode when IIN(DC) > 0 as shown in Figure 15 and the inductor current
continuously flows.
While the output current (IOUT) continues to decrease, IIN(DC) reaches 0 as shown in Figure 16. This point is the
critical point of the continuous mode.
As shown in equations (1) and (2), the direct current component (IIN(DC)) depends on IOUT.
IOUT(0) when IIN(DC) reaches 0 (critical point) :
IOUT(0) = tON VIN2
2 L VOUT
When the output current decreases below IOUT(0), the current flowing in the inductor stops flowing in the tOFF period
as shown in Figure 17. This is the discontinuous mode.
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
Rev.2.0_02 S-8363 Series
17
t
IIN(DC)
tOFF tON
t = 1 / fOSC
IL min.
IL max.
IIN(AV)
IL
Figure 15 Continuous Mode (Current Cycle of Inductor Current IL)
t
tOFF tON
t = 1 / fOSC
IL min.
IL max.
IL
Figure 16 Critical Point (Current Cycle of Inductor Current IL)
t
tOFF tON
t = 1 /
f
OSC
IL min.
IL max.
IL
Figure 17 Discontinuous Mode (Current Cycle of Inductor Current IL)
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
S-8363 Series Rev.2.0_02
18
External Parts Selection
1. Inductor
The recommended L value of the S-8363 Series is 2.2 H.
Caution When selecting an inductor, be careful about its allowable current. If a current exceeding the
allowable current flows through the inductor, magnetic saturation occurs, substantially lowering
the efficiency and destroying ICs due to large current. Therefore, select an inductor such that IPK
does not exceed the allowable current. The following equations express IPK in the ideal statuses
in the discontinuous and continuous modes :
IPK = 2 IOUT (VOUT + VD*2 VIN)
fOSC*1 L (Discontinuous mode)
IPK = VOUT + VD*2
VIN IOUT +
(VOUT + VD*2 VIN) VIN
2 (VOUT + VD*2) fOSC*1 L (Continuous mode)
*1. fOSC : oscillation frequency
*2. VD is the forward voltage of a diode. The reference value is 0.4 V.
However, current exceeding the above equation flows because conditions are practically not ideal.
Perform sufficient evaluation with actual application.
Table 9 Typical Inductors
Manufacturer Name L value Direct resistor Rated current Size (L W H）[mm]
TDK Corporation
VLF302510-2R2M 2.2 H0.084 max. 1.23 A max. 3.0 2.5 1.0
VLS3010T-2R2M 2.2 H0.116 max. 1.2 A max. 3.0 3.0 1.0
VLS201610E 2.2 H0.276 max. 0.94 A max. 2.0 1.6 0.95
MLP2012S2R2M 2.2 H0.300 max. 0.8 A max. 2.0 1.25 1.0
Coilcraft, Inc LPS3010-222ML 2.2 H0.220 max. 1.3 A max. 3.0 3.0 1.0
Murata Manufacturing
Co., Ltd.
LQM2HPN2R2MG0 2.2 H0.080 ±25% 1.3 A max. 2.5 2.0 1.0
LQH3NPN2R2NG0 2.2 H0.140 ±20% 1.25 A max. 2.7 3.0 1.0
TAIYO YUDEN Co., Ltd.
NR3010T2R2M 2.2 H0.114 max. 1.1 A max. 3.0 3.0 1.0
NR4010T2R2N 2.2 H0.180 max. 1.15 A max. 4.0 4.0 1.0
BRL2518T2R2M 2.2 H 0.1755 max. 0.85 A max. 2.5 1.8 1.2
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
Rev.2.0_02 S-8363 Series
19
2. Diode
Use an externally mounted that meets the following conditions.
Low forward voltage (Schottky barrier diode or similar types)
High switching speed
Reverse withstand voltage of VOUT + spike voltage or more
Rated current of IPK or more
3. Input capacitor (CIN) and output capacitor (COUT)
To improve efficiency, an input capacitor (CIN) lowers the power supply impedance and averages the input current.
Select CIN according to the impedance of the power supply used. The recommended capacitance is 1 F or more
for the S-8363 Series.
An output capacitor (COUT), which is used to smooth the output voltage, requires a capacitance larger than that of
the step-down type because the current is intermittently supplied from the input to the output side in the step-up
type. When the output voltage is low or the load current is large, enlarging an output capacitance value is required.
Moreover, when the output voltage is high, connecting a 0.1 F ceramic capacitor in parallel is required. Mount
near a VOUT pin as possible.
The indication of an output capacitor to the setting value of VOUT voltage is shown in the table 10. Perform thorough
evaluation using an actual application to set the constant when selecting parts.
A ceramic capacitor can be used for both the input and output.
Table 10 Recommended Output Capacitance
VOUT voltage Output capacitor (COUT)
< 2.5 V 10 F 2
2.5 V to 4.0 V 10 F
4.0 V < 10 F 0.1 F
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
S-8363 Series Rev.2.0_02
20
4. Output voltage setting resistors (RFB1, RFB2), capacitor for phase compensation (CFB)
For the S-8363 Series, VOUT can be set to any value by using external divider resistors. Connect the divider
resistors between the VOUT and VSS pins.
Because VFB = 0.6 V typ., VOUT can be calculated by using the following equation :
V
OUT = RFB1 + RFB2
RFB2 0.6
Connect divider resistors RFB1 and RFB2 as close to the IC as possible to minimize the effects of noise. If noise has
an effect, adjust the values of RFB1 and RFB2 so that RFB1 + RFB2 < 100 k.
CFB, which is connected in parallel with RFB1, is a capacitor for phase compensation.
By setting the zero point (the phase feedback) by adding capacitor CFB to output voltage setting resistor RFB1 in
parallel, the phase margin increases, improving the stability of the feedback loop. To effectively use the feedback
portion of the phase based on the zero point, define CFB by using the following equation :
C
FB
L COUT
3 RFB1 VOUT
VDD
This equation is only a guide.
The following explains the optimum setting.
To efficiently use the feedback portion of the phase based on the zero point, specify settings so that the phase
feeds back at the zero point frequency (fzero) of RFB1 and CFB according to the phase delay at the pole frequency
(fpole) of L and COUT. The zero point frequency is generally set slightly higher than the pole frequency.
The following equations are used to determine the pole frequency of L and COUT and the zero point frequency set
using RFB1 and CFB.
fpole
1
2 L COUT
VDD
VOUT
f
zero
1
2 RFB1 CFB
The transient response can be improved by setting the zero point frequency in a lower frequency range. If, however,
the zero point frequency is set in a significantly lower range, the gain increases in the range of high frequency and
the phase margin decreases. This might result in unstable operation. Determine the proper value after sufficient
evaluation with actual application.
The typical constants based on our evaluation are shown in Table 11.
Table 11 Example of Constant for External Parts
VOUT
(
S
)
[V] VIN [V] RFB1 [k] RFB2 [k] CFB [pF]
1.8 1.2 30 15 82
2.48 1.2 47 15 68
3.32 1.8 68 15 47
4.2 1.8 90 15 39
5.0 1.8 110 15 39
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
Rev.2.0_02 S-8363 Series
21
Standard Circuit
Error Amplifier
CIN
VIN
VOUT
VOUT
CONT
VSS
VIN
ON/OFF
Internal
Power Supply
ON/OFF
Circuit
Switching
Control
Circuit Reference
Voltage
Source
PWM
Comparator
VIN
VOUT
SD
FB
Current
Limit Circuit
Oscillation
Circuit
SLOPE
Compensation
STU Mode
Circuit
MUX
Start-up
Circuit
L = 2.2 H
C
OUT
10
F
Ground point
CFB
C
OUT
0.1
F
RFB1
RFB2
Figure 18
Caution The above connection diagram and constant will not guarantee successful operation. Perform
thorough evaluation using an actual application to set the constants.
Precaution
Mount external capacitors and inductor as close as possible to the IC. Set single point ground.
Characteristics ripple voltage and spike noise occur in IC containing switching regulators. Moreover rush current
flows at the time of a power supply injection. Because these largely depend on the inductor, the capacitor and
impedance of power supply used, perform sufficient evaluation with actual application.
The 0.1 F capacitor connected between the VOUT and VSS pins is a bypass capacitor. It stabilizes the power
supply in the IC when application is used with a heavy load, and thus effectively works for stable switching
regulator operation. Allocate the bypass capacitor as close to the IC as possible, prioritized over other parts.
Although the IC contains a static electricity protection circuit, static electricity or voltage that exceeds the limit of
the protection circuit should not be applied.
The power dissipation of the IC greatly varies depending on the size and material of the board to be connected.
Perform sufficient evaluation using an actual application before designing.
ABLIC Inc. claims no responsibility for any disputes arising out of or in connection with any infringement by
products including this IC of patents owned by a third party.
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
S-8363 Series Rev.2.0_02
22
Application Circuits
Application circuits are examples. They may always not guarantee successful operation.
1. External parts for application circuits
Table 12 Characteristics of External Parts
Part Part Name Manfuacturer Characteristics
Inductor
VLF302510
TDK Corporation
2.2 H, DCR*1 = 0.084 , IMAX*2 = 1.23 A,
L W×H = 3.0 2.5 1.0 mm
VLS201610E 2.2 H, DCR*1 = 0.276 , IMAX*2 = 0.94 A,
L W H = 2.0 1.6 0.95 mm
MLP2012S 2.2 H, DCR*1 = 0.300 , IMAX*2 = 0.8 A,
L W H = 2.0 1.25 1.0 mm
BRL2518T2R2M TAIYO YUDEN Co., Ltd. 2.2 H, DCR*1 = 0.1755 , IMAX*2 = 0.85 A,
L W H = 2.5 1.8 1.2 mm
Diode
CRS02
TOSHIBA CORPORATION
VF*3 = 0.4 V typ., IF*4 = 1.0 A, VR*5 = 30 V,
L W H = 3.5 1.6 1.08 mm
CRS08 VF*3 = 0.32 V typ., IF*4 = 1.5 A, VR*5 = 30 V,
L W H = 3.5 1.6 1.08 mm
RB070M-30TR
ROHM Co., Ltd.
VF*3 = 0.44 V typ., IF*4 = 1.5 A, VR*5 = 30 V,
L W H = 3.5 1.6 0.9 mm
VF*3 = 0.35 V max., IF*4 = 3.0 A, VR*5 = 20 V,
L W H = 4.7 2.6 1.05 mm
RB051LA-40TR
RB161M-20TR VF*3 = 0.31 V typ., IF*4 = 1.0 A, VR*5 = 20 V,
L W H = 3.5 1.6 0.9 mm
VF*3 = 0.42 V, IF*4 = 3.0 A, VR*5 = 20 V,
L W H = 1.6 0.8 0.603 mm
RB161SS-20T2R
Capacitor
LMK212BJ106KD
TAIYO YUDEN Co., Ltd.
10 F, EDC*6 = 10 V, X5R,
L W H = 2.0 1.25 0.95 mm
EMK107B7105KA 10 F, EDC*6 = 16 V, X7R,
L W H = 1.6 0.8 0.90 mm
C1608X5R0J106M
TDK Corporation
10 F, EDC*6 = 6.3 V, X5R,
L W H = 1.6 0.8 0.9 mm
C1608X7R1C105K 1 F, EDC*6 = 16 V, X7R,
L W H = 1.6 0.8 0.9 mm
* 1. DCR : DC resistance
* 2. IMAX : Maximum allowable current
* 3. VF : Forward voltage
* 4. IF : Forward current
* 5. VR : Reverse voltage
* 6. EDC : Rated voltage
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
Rev.2.0_02 S-8363 Series
23
2. A power supply started by 0.9 V
Following shows a power supply example which starts up by using the final voltage (0.9 V) of dry cells and its
characteristics.
L
S-8363
Series
VDD
VSS
ON/OFF FB
C
OUT
R
FB1
R
FB2
C
FB
V
OUT
C
IN
SD
CONTVOUT
0.1
F
Figure 19 Circuit Example (For a power supply started by 0.9 V)
Table 13 External Parts Examples (For a power supply started by 0.9 V)
Condition Output
Voltage
IC Product
Name
L Product
Name
SD Product
Name COUT Product Name RFB1 R
FB2 C
FB
1 3.3 V S-8363B VLF302510 RB161M-20TR LMK212BJ106KD 68 k 15 k47 pF
2 3.3 V S-8363B VLF302510 RB051LA-40TR LMK212BJ106KD 68 k 15 k47 pF
3 3.3 V S-8363B VLF302510 RB070M-30TR LMK212BJ106KD 68 k 15 k47 pF
4 3.3 V S-8363B VLF302510 RB161SS-20T2R LMK212BJ106KD 68 k 15 k47 pF
5 3.3 V S-8363B VLF302510 CRS02 LMK212BJ106KD 68 k 15 k47 pF
6 3.3 V S-8363B VLF302510 CRS08 LMK212BJ106KD 68 k 15 k47 pF
Caution The above connection will not guarantee successful operation. Perform thorough evaluation using an
actual application to set the constant.
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
S-8363 Series Rev.2.0_02
24
3. Output characteristics of power supply started by 0.9 V
Following shows the (1) Load current (IOUT) vs. Operating start voltage (VST), (2) Temperature (Ta) vs. Operating
start voltage (VST), (3) Load current (IOUT) vs. Efficiency (), (4) Load current (IOUT) vs. Output voltage (VOUT),
characteristics for conditions 1 to 6 in Table 13.
(1) Load current (IOUT) vs. Operating start voltage (VST) (2) Temperature (Ta) vs. Operating start voltage (VST)
10
1100
1.80
1.60
1.40
1.20
1.00
0.80
0.60
0.40
0.20
0.00
V
ST
[V]
I
OUT
[mA]
Condition
3
Condition
5
Condition
6
Condition 2
Condition 4
Condition 1
0.4
1.1
Ta [C]
−
40
0.5
0.6
0.7
0.8
0.9
1.0
V
ST
[V]
857550250
−
25
Condition
1
Condition
4
Condition
2
Condition
5
Condition
3
Condition
6
(3) Load current (IOUT) vs. Efficiency () (4) Load current (IOUT) vs. Output voltage (VOUT)
0.01 1000
100
0
50
70
80
30
10
20
40
60
90
0.1 1 10 100
I
OUT
[mA]
η [%]
Condition
2
Condition
3
Condition
1
Condition
4
Condition
6
Condition
5
0.01 1000
3.40
3.20
3.30
3.34
3.36
3.26
3.22
3.24
3.28
3.32
3.38
0.1 1 10 100
IOUT [mA]
V
OUT
[V]
Condition
4
Condition
5
Condition
2
Condition
6
Condition
3
Condition
1
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
Rev.2.0_02 S-8363 Series
25
4. Super-small power supply
Following shows a circuit example which gives top priority to reduce the implementation area by using the small
external parts and its characteristics.
L
S-8363
Series
VDD
VSS
ON/OFF FB
C
OUT1
R
FB1
R
FB2
C
FB
V
OUT
C
IN
SD
CONTVOUT
C
OUT2
Figure 20 Circuit Example (For super-small power supply)
Table 14 External Parts Examples (For super-small power supply)
Condition Output
Voltage
IC Product
Name
L Product
Name
SD Product
Name C
OUT1
C
OUT2
R
FB1
R
FB2
C
FB
1 1.8 V S-8363B MLP2012S RB161SS-20 C1608X5R0J106M C1608X5R0J106M
30 k
15 k
82 pF
2 3.3 V S-8363B MLP2012S RB161SS-20 LMK212BJ106KD 0.1
F
68 k
15 k
47 pF
3 1.8 V S-8363B VLS201610E RB161SS-20 C1608X5R0J106M C1608X5R0J106M
30 k
15 k
82 pF
4 3.3 V S-8363B VLS201610E RB161SS-20 LMK212BJ106KD 0.1
F
68 k
15 k
47 pF
5 1.8 V S-8363B BRL2518T2R2M RB161SS-20 C1608X5R0J106M C1608X5R0J106M
30 k
15 k
82 pF
6 3.3 V S-8363B BRL2518T2R2M RB161SS-20 LMK212BJ106KD 0.1
F
68 k
15 k
47 pF
Caution The above connection will not guarantee successful operation. Perform thorough evaluation using an
actual application to set the constant.
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
S-8363 Series Rev.2.0_02
26
5. Output characteristics of super-small power supply
Following shows the output current (IOUT) vs. efficiency (), output current (IOUT) vs. output voltage (VOUT), and
output current (IOUT) vs. ripple voltage (Vr) characteristics for conditions 1 to 6 in Table 14.
Condition 1
0.01 1000
100
0
50
70
80
30
10
20
40
60
90
0.1 1 10 100
I
OUT
[mA]
η [%]
V
IN
= 0.9 V
VIN = 1.2 V
VIN = 1.5 V
0.01 1000
1.90
1.70
1.80
1.84
1.86
1.76
1.72
1.74
1.78
1.82
1.88
0.1 1 10 100
I
OUT
[mA]
V
OUT
[V]
V
IN
= 0.9 V
V
IN
= 1.2 V
V
IN
= 1.5 V
0.01 1000
50
0
25
35
40
15
5
10
20
30
45
0.1 1 10 100
IOUT [mA]
V
r
[
mV
]
V
IN
= 1.5 V
V
IN
= 1.2 V
V
IN
= 0.9 V
Condition 2
0.01 1000
100
0
50
70
80
30
10
20
40
60
90
0.1 1 10 100
I
OUT
[mA]
η [%]
VIN = 1.2 V
VIN = 1.8 V
VIN = 2.4 V
VIN = 3.0 V
0.01 1000
3.40
3.20
3.30
3.34
3.36
3.26
3.22
3.24
3.28
3.32
3.38
0.1 1 10 100
I
OUT
[mA]
VOUT [V]
VIN = 1.2 V
VIN = 1.8 V
VIN = 2.4 V
VIN = 3.0 V
0.01 1000
50
0
25
35
40
15
5
10
20
30
45
0.1 1 10 100
I
OUT
[mA]
Vr [
mV
]
VIN = 3.0 V
VIN = 2.4 V
VIN = 1.8 V
VIN = 1.2 V
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
Rev.2.0_02 S-8363 Series
27
Condition 3
0.01 1000
100
0
50
70
80
30
10
20
40
60
90
0.1 1 10 100
I
OUT
[mA]
η [%]
VIN = 1.2 V
VIN = 0.9 V
VIN = 1.5 V
0.01 1000
1.90
1.70
1.80
1.84
1.86
1.76
1.72
1.74
1.78
1.82
1.88
0.1 1 10 100
I
OUT
[mA]
VOUT [V]
V
IN
= 0.9 V
V
IN
= 1.2 V
V
IN
= 1.5 V
0.01 1000
50
0
25
35
40
15
5
10
20
30
45
0.1 1 10 100
IOUT [mA]
V
r
[
mV
]
V
IN
= 1.5 V
V
IN
= 1.2 V
V
IN
= 0.9 V
Condition 4
0.01 1000
100
0
50
70
80
30
10
20
40
60
90
0.1 1 10 100
I
OUT
[mA]
η [%]
VIN = 1.2 V
VIN = 1.8 V
VIN = 2.4 V
VIN = 3.0 V
0.01 1000
3.40
3.20
3.30
3.34
3.36
3.26
3.22
3.24
3.28
3.32
3.38
0.1 1 10 100
I
OUT
[mA]
VOUT [V]
VIN = 1.2 V
VIN = 1.8 V
VIN = 2.4 V
VIN = 3.0 V
0.01 1000
50
0
25
35
40
15
5
10
20
30
45
0.1 1 10 100
I
OUT
[mA]
Vr [
mV
]
VIN = 3.0 V
VIN = 2.4 V
VIN = 1.8 V
VIN = 1.2 V
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
S-8363 Series Rev.2.0_02
28
Condition 5
0.01 1000
100
0
50
70
80
30
10
20
40
60
90
0.1 1 10 100
I
OUT
[mA]
η [%]
VIN = 1.5 V
VIN = 1.2 V
VIN = 0.9 V
0.01 1000
1.90
1.70
1.80
1.84
1.86
1.76
1.72
1.74
1.78
1.82
1.88
0.1 1 10 100
I
OUT
[mA]
VOUT [V]
VIN = 0.9 V
VIN = 1.2 V
VIN = 1.5 V
0.01 1000
50
0
25
35
40
15
5
10
20
30
45
0.1 1 10 100
IOUT [mA]
V
r
[
mV
]
V
IN
= 1.5 V
V
IN
= 1.2 V
V
IN
= 0.9 V
Condition 6
0.01 1000
100
0
50
70
80
30
10
20
40
60
90
0.1 1 10 100
I
OUT
[mA]
η [%]
VIN = 0.9 V
VIN = 1.2 V
VIN = 1.8 V
VIN = 2.5 V
0.01 1000
3.40
3.20
3.30
3.34
3.36
3.26
3.22
3.24
3.28
3.32
3.38
0.1 1 10 100
I
OUT
[mA]
VOUT [V]
VIN = 0.9 V
VIN = 1.2 V
VIN = 1.8 V
VIN = 2.5 V
0.01 1000
50
0
25
35
40
15
5
10
20
30
45
0.1 1 10 100
I
OUT
[mA]
Vr [
mV
]
VIN = 2.5 V
VIN = 1.8 V
VIN = 1.2 V
VIN = 0.9 V
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
Rev.2.0_02 S-8363 Series
29
Characteristics (Typical Data)
1. Examples of Major Power Supply Dependence Characteristics (Ta = 25C)
(1) Current consumption during operation (IIN1) vs.
Operating input voltage (VIN)
Current consumption during switching off (IIN2) vs.
Operating input voltage (VIN)
(2) Current consumption during operation (ISS1) vs.
Output voltage (VOUT)
Current consumption during switching off (ISS2) vs.
Output voltage (VOUT)
4.54.03.53.02.52.01.51.00.50.0
12
0
10
8
6
4
2
VIN [V]
I
IN1
, I
IN2
[μA]
IIN1, IIN2
5.04.03.02.01.00.0
V
OUT
[V]
I
SS1
, I
SS2
[μA]
1000
0
500
700
800
300
100
200
400
600
900
I
SS1
I
SS2
(3) Current consumption during powe
r
-of
f
(ISSS) vs. Operating input voltage (VIN), Output voltage (VOUT)
4.54.03.53.02.52.01.51.00.50.0
V
IN
,
V
OUT
[V]
I
SSS
[μA]
1.0
0
0.5
0.7
0.8
0.3
0.1
0.2
0.4
0.6
0.9
(4) Oscillation frequency (
f
OSC) vs.
Output voltage (VOUT)
(5) Start-up oscillation frequency (
f
ST) vs.
Operating input voltage (VIN)
5.04.54.03.53.02.52.01.5
1.38
1.02
1.34
1.30
1.26
1.22
1.18
1.14
1.10
1.06
VOUT [V]
fosc [MHz]
4.54.03.53.02.52.01.51.00.50.0
V
IN
[V]
f
ST
[kHz]
500
450
400
350
300
250
200
150
100
(6) Maximum duty ratio (MaxDuty) vs.
Output voltage (VOUT)
(7) Soft-start time (tSS) vs. Output voltage (
V
OUT)
5.04.54.03.53.02.52.01.5
100
95
90
85
80
75
70
V
OUT
[V]
MaxDuty [%]
5.04.54.03.53.02.52.01.5
1.5
1.4
1.3
1.2
1.1
1.0
0.9
V
OUT
[V]
t
SS
[ms]
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
S-8363 Series Rev.2.0_02
30
(8) PWM / PFM switching duty ratio (PFMDuty) vs.
Operating input voltage (VIN)
(9) Output current at PWM / PFM switching (IPFM) vs.
Operating input voltage (VIN)
4.54.03.53.02.52.01.51.00.50.0
VIN [V]
25
0
20
15
10
5
PFMDuty [%]
VOUT = 1.8 V
VOUT = 3.32 V
VOUT = 5.0 V
4.54.03.53.02.52.01.51.00.50.0
VIN [V]
70
0
60
50
40
30
20
10
I
PFM
[mA]
VOUT = 1.8 V
VOUT = 3.32 V
VOUT = 5.0 V
(10) Limited current (ILIM) vs.
Operating input voltage (VIN)
(11) Maximum load current (IOUTMAX) vs.
Operating input voltage (VIN)
4.54.03.53.02.52.01.51.00.50.0
1600
1400
1200
1000
800
600
400
V
IN
[V]
I
LIM
[mA]
V
OUT
= 1.8 V
V
OUT
= 3.32 V
V
OUT
= 5.0 V
4.54.03.53.02.52.01.51.00.50.0
V
IN
[V]
I
OUTMAX
[mA]
1000
0
500
700
800
300
100
200
400
600
900
V
OUT
= 1.8 V
V
OUT
= 3.32 V
V
OUT
= 5.0 V
(12) Power MOS FET leakage current (ILSW) vs.
Output voltage (V
OUT)
(13) High level input voltage (VSH) vs.
Operating input voltage (VIN)
5.04.54.03.53.02.52.01.51.00.50.0
0.5
0.4
0.3
0.2
0.1
0.0
VOUT [V]
I
LSW
[μA]
0.8
0.7
0.6
0.5
0.4
0.3
V
SH
[V]
4.54.03.53.02.52.01.51.00.50.0
V
IN
[V]
(14) Low level input voltage (VSL) vs.
Operating input voltage (VIN)
(15) FB voltage (VFB) vs. Output voltage (VOUT)
4.54.03.53.02.52.01.51.00.50.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
VIN [V]
V
SL
[V]
0.63
0.62
0.61
0.60
0.59
0.58
0.57
V
OUT
[V]
V
FB
[V]
5.04.54.03.53.02.52.01.5
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
Rev.2.0_02 S-8363 Series
31
2. Examples of Major Temperature Characteristics (Ta = 40 to 85C)
(1) Current consumption during operation (IIN1) vs.
Temperature (Ta)
(2) Current consumption during operation (ISS1) vs.
Temperature (Ta)
Ta [C]
−
40
IIN1 [μA]
10.0
0.0
5.0
7.0
8.0
3.0
1.0
2.0
4.0
6.0
9.0
857550250
−
25
VIN = 0.9 V
VIN = 1.8 V
VIN = 4.2 V
VIN = 4.5 V
Ta [C]
−
40
ISS1 [μA]
1000
0
500
700
800
300
100
200
400
600
900
857550250
−
25
VOUT = 5.0 V
VOUT = 3.3 V
VOUT = 1.8 V
(3) Current consumption during switching off (IIN2) vs.
Temperature (Ta)
(4) Current consumption during switching off (ISS2) vs.
Temperature (Ta)
Ta [C]
−
40
I
IN2
[μA]
10.0
0.0
5.0
7.0
8.0
3.0
1.0
2.0
4.0
6.0
9.0
857550250
−
25
V
IN
= 0.9 V
V
IN
= 1.8 V
V
IN
= 4.2 V
V
IN
= 4.5 V
Ta [C]
−
40
ISS2 [μA]
200
0
100
140
160
60
20
40
80
120
180
857550250
−
25
VOUT = 1.8 V
VOUT = 3.3 V
VOUT = 5.0 V
(5) Current consumption during power-off (ISSS) vs. Temperature (Ta)
Ta [C]
−
40
ISSS [μA]
1.0
0.0
0.5
0.7
0.8
0.3
0.1
0.2
0.4
0.6
0.9
857550250
−
25
VIN = VOUT = 4.5 V
(6) Oscillation frequency (fOSC) vs. Temperature (Ta) (7) Start-up oscillation frequency (fST) vs. Temperature (Ta)
Ta [C]
−
40
1.38
1.02
1.34
1.30
1.26
1.22
1.18
1.14
1.10
1.06
fosc [MHz]
857550250
−
25
VOUT = 1.8 V
VOUT = 3.3 V
VOUT = 5.0 V
Ta [C]
−
40
fST [kHz]
500
450
400
350
300
250
200
150
100
857550250
−
25
VIN = 0.9 V
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
S-8363 Series Rev.2.0_02
32
(8) Maximum duty ratio (MaxDuty) vs. Temperature (Ta) (9) Soft-start time (tSS) vs. Temperature (Ta)
Ta [C]
−
40
100
95
90
85
80
75
70
MaxDuty [%]
857550250
−
25
VOUT = 1.8 V
VOUT = 3.3 V
VOUT = 5.0 V
Ta [C]
−
40
1.6
0.6
1.1
1.3
1.4
0.9
0.7
0.8
1.0
1.2
1.5
tSS [ms]
857550250
−
25
VOUT = 1.8 V
VOUT = 3.3 V
VOUT = 5.0 V
(10) PWM / PFM switching duty ratio (PFMDuty) vs.
Temperature (Ta)
(11) Output current at PWM / PFM switching (IPFM) vs.
Temperature (Ta)
Ta [C]
−
40
25
0
20
15
10
5
PFMDuty [%]
857550250
−
25
V
OUT
= 1.8 V, V
IN
= 1.2 V
V
OUT
= 3.32 V, V
IN
= 1.8 V
V
OUT
= 5.0 V, V
IN
= 3.0 V
Ta [C]
−
40
30
25
20
15
10
5
0
I
PFM
[mA]
857550250
−
25
V
OUT
= 5.0 V, V
IN
= 3.0 V
V
OUT
= 3.32 V, V
IN
= 1.8 V
V
OUT
= 1.8 V, V
IN
= 1.2 V
(12) Limited current (ILIM) vs.
Temperature (Ta)
(13) Maximum load current (IOUTMAX) vs.
Temperature (Ta)
Ta [C]
−
40
1600
1400
1200
1000
800
600
400
ILIM [mA]
857550250
−
25
VOUT = 3.32 V, VIN = 1.8 V
VOUT = 1.8 V, VIN = 1.2 V
VOUT = 5.0 V, VIN = 3.0 V
Ta [C]
−
40
1000
0
500
700
800
300
100
200
400
600
900
IOUTMAX [mA]
857550250
−
25
VOUT = 3.32 V, VIN = 1.8 V
VOUT = 1.8 V, VIN = 1.2 V
VOUT = 5.0 V, VIN = 3.0 V
(14) Power MOS FET leakage current (ILSW) vs.
Temperature (Ta)
(15) High level input voltage (VSH) vs.
Temperature (Ta)
Ta [C]
−
40
0.5
−0.5
0.0
0.2
0.3
−
0.2
−
0.4
−
0.3
−
0.1
0.1
0.4
ILSW [μA]
857550250
−
25
VOUT = 1.8 V
VOUT = 3.3 V
VOUT = 5.0 V
Ta [C]
−
40
0.60
0.55
0.50
0.45
0.40
0.35
0.30
VSH [V]
857550250
−
25
VIN = 1.8 V
VIN = 0.9 V
VIN = 4.5 V
VIN = 4.2 V
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
Rev.2.0_02 S-8363 Series
33
(16) Low level input voltage (VSL) vs Temperature (Ta) (17) FB voltage (VFB) vs. Temperature (Ta)
Ta [C]
−
40
0.60
0.55
0.50
0.45
0.40
0.35
0.30
VSL [V]
857550250
−
25
VIN = 0.9 V
VIN = 1.8 V
VIN = 4.2 V
VIN = 4.5 V
Ta [C]
−
40
0.63
0.62
0.61
0.60
0.59
0.58
0.57
VFB [V]
857550250
−
25
VOUT = 3.3 V
(18) Operating start voltage (VST) vs.
Temperature (Ta)
(19) Start-up mode release voltage (VSTU+) vs.
Temperature (Ta)
Ta [C]
−
40
1.2
1.0
0.8
0.6
0.4
0.2
0.0
V
ST
[V]
857550250
−
25
I
OUT
= 10 mA
I
OUT
= 1 mA
I
OUT
= 0.1 mA
Ta [C]
−
40
V
STU
+
[V]
1.6
1.1
1.5
1.4
1.3
1.2
857550250
−
25
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
S-8363 Series Rev.2.0_02
34
3. Output waveform
(1) VOUT = 3.3 V（VIN = 1.98 V）
IOUT = 1 mA IOUT = 10 mA
3.26
3.34
3.33
3.32
3.31
3.30
3.29
3.28
3.27
t [2 μs / div]
3.0
3.8
VOUT [V]
VCONT [V]
3.1
3.2
3.3
3.4
3.5
3.6
3.7
VOUT
VCONT
3.26
3.34
3.33
3.32
3.31
3.30
3.29
3.28
3.27
3.0
3.8
VOUT [V]
3.1
3.2
3.3
3.4
3.5
3.6
3.7
t [1 μs / div]
VCONT [V]
VOUT
VCONT
IOUT = 100 mA IOUT = 300 mA
3.26
3.34
3.33
3.32
3.31
3.30
3.29
3.28
3.27
3.8
VOUT [V]
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.0
t [1 μs / div]
VCONT [V]
VOUT
VCONT
3.26
3.34
3.33
3.32
3.31
3.30
3.29
3.28
3.27
3.8
VOUT [V]
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.0
t [1 μs / div]
VCONT [V]
VOUT
VCONT
(2) VOUT = 5.0 V（VIN = 3.0 V）
IOUT = 1 mA IOUT = 10 mA
VOUT [V]
5.04
4.90
5.02
5.00
4.98
4.96
4.94
4.92
12.0
−
2.0
10.0
8.0
6.0
4.0
2.0
0.0
t [2 μs / div]
VCONT [V]
VOUT
VCONT
VOUT [V]
5.04
4.90
5.02
5.00
4.98
4.96
4.94
4.92
12.0
−
2.0
10.0
8.0
6.0
4.0
2.0
0.0
t [1 μs / div]
VCONT [V]
VOUT
VCONT
IOUT = 100 mA IOUT = 300 mA
VOUT [V]
5.04
4.90
5.02
5.00
4.98
4.96
4.94
4.92
12.0
−
2.0
10.0
8.0
6.0
4.0
2.0
0.0
t [1 μs / div]
VCONT [V]
VOUT
VCONT
VOUT [V]
5.04
4.90
5.02
5.00
4.98
4.96
4.94
4.92
12.0
−
2.0
10.0
8.0
6.0
4.0
2.0
0.0
t [1 μs / div]
VCONT [V]
VOUT
VCONT
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
Rev.2.0_02 S-8363 Series
35
4. Examples of Transient Response Characteristics
Unless otherwise specified, the used parts are those in Table 6 External Parts List.
4.1 At power-on (VOUT(S) = 3.3 V, VIN = 0 V 0.9 V, Ta = 25C)
(1) IOUT = 1 mA
0
4.0
3.0
2.0
1.0
Time [μs]
3.2
2.21.20.2
−
0.8
V
IN
, V
OUT
[V]
V
OUT
V
IN
4.2 At power-on (VOUT(S) = 3.3 V, VIN = 0 V 2.0 V, Ta = 25C)
(1) IOUT = 1 mA (2) IOUT = 300 mA
0
4.0
3.0
2.0
1.0
Time [μs]
3.2
2.21.20.2
−
0.8
V
IN
, V
OUT
[V]
V
OUT
V
IN
0
4.0
3.0
2.0
1.0
Time [μs]
3.2
2.21.20.2
−
0.8
V
IN
, V
OUT
[V]
V
OUT
V
IN
4.3 Power-off pin response (VOUT = 3.3 V, VIN = 0.9 V, VON/OFF = 0 V 0.9 V, Ta = 25C)
(1) IOUT = 1 mA
0
4.0
3.0
2.0
1.0
Time [μs]
3.2
2.21.20.2
−
0.8
V
ON/OFF
, V
OUT
[V]
V
OUT
V
ON/OFF
4.4 Power-off pin response (VOUT = 3.3 V, VIN = 2.0 V, VON/OFF = 0 V 2.0 V, Ta = 25C)
(1) IOUT = 1 mA (2) IOUT = 300 mA
0
4.0
3.0
2.0
1.0
Time [μs]
3.2
2.21.20.2
−
0.8
V
ON/OFF
, V
OUT
[V]
V
OUT
V
ON/OFF
0
4.0
3.0
2.0
1.0
Time [μs]
3.2
2.21.20.2
−
0.8
V
ON/OFF
, V
OUT
[V]
V
OUT
V
ON/OFF
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
S-8363 Series Rev.2.0_02
36
4.5 Power supply voltage fluctuations (VOUT = 3.0 V, IOUT = 100 mA, Ta = 25C)
(1) VIN = 1.98 V→2.64 V (2) VIN = 2.64 V→1.98 V
Time [μs]
VOUT [V]
3.5
3.0
6.0
1.0
400
−
100 3002001000
3.4
3.3
3.2
3.1
5.0
4.0
3.0
2.0
VIN [V]
VOUT
VIN
Time [μs]
VOUT [V]
3.5
3.0
6.0
1.0
400
−
100 3002001000
3.4
3.3
3.2
3.1
5.0
4.0
3.0
2.0
VIN [V]
V
OUT
V
IN
4.6 Load fluctuations (VOUT = 3.3 V, VIN = 1.98 V, IOUT = 0.1 mA 100 mA 0.1 mA, Ta = 25C)
(1) IOUT = 0.1 mA→100 mA (2) IOUT = 100 mA→0.1 mA
Time [μs]
VOUT [V]
3.5
3.0
500
0
4003002001000
−
100
−
200
3.4
3.3
3.2
3.1
400
300
200
100
IOUT [mA]
V
OUT
I
OUT
Time [μs]
VOUT [V]
3.5
3.0
500
0
6
−
2
3.4
3.3
3.2
3.1
400
300
200
100
IOUT [mA]
420
V
OUT
I
OUT
4.7 Load fluctuations (VOUT = 3.3 V, VIN = 1.98 V, IOUT = 100 mA 200 mA 100 mA, Ta = 25C)
(1) IOUT = 100 mA→200 mA (2) IOUT = 200 mA→100 mA
Time [μs]
VOUT [V]
3.5
3.0
500
0
400
−
100 3002001000
3.4
3.3
3.2
3.1
400
300
200
100
IOUT [mA]
V
OUT
I
OUT
Time [μs]
VOUT [V]
3.5
3.0
500
0
400
−
100 3002001000
3.4
3.3
3.2
3.1
400
300
200
100
IOUT [mA]
V
OUT
I
OUT
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
Rev.2.0_02 S-8363 Series
37
Reference Data
Reference data is provided to determine specific external components. Therefore, the following data shows the
characteristics of the recommended external components selected for various applications.
1. External parts
Table 15 Efficiency vs. Output Current Characteristics and Output Voltage vs. Output Current Characteristics for
External Parts (1 / 2)
Condition Product Name Output Voltage L Product Name SD Product Name CIN
1 S-8363B 1.8 V VLF302510 CRS08 C1608X7R1C105K
2 S-8363B 3.3 V VLF302510 CRS08 EMK107B7105KA
3 S-8363B 5.0 V VLF302510 CRS08 EMK107B7105KA
4 S-8363B 3.3 V VLF302510 CRS08 C1608X7R1C105K
5 S-8363B 3.3 V VLF302510 CRS08 C1608X7R1C105K
6 S-8363B 3.3 V VLF302510 RB070M-30TR EMK107B7105KA
7 S-8363B 3.3 V VLF302510 RB051LA-40TR EMK107B7105KA
Table 15 Efficiency vs. Output Current Characteristics and Output Voltage vs. Output Current Characteristics for
External Parts (2 / 2)
Condition COUT1 C
OUT2 C
OUT3 R
FB1 R
FB2 C
FB
1 C1608X5R0J106M C1608X5R0J106M 30 k 15 k 82 pF
2 LMK212BJ106KD 0.1 F 68 k 15 k 47 pF
3 LMK212BJ106KD 0.1 F 110 k 15 k 38 pF
4 C1608X5R0J106M C1608X5R0J106M 68 k 15 k 47 pF
5 C1608X5R0J106M C1608X5R0J106M C1608X5R0J106M 68 k 15 k 47 pF
6 LMK212BJ106KD 0.1 F 68 k 15 k 47 pF
7 LMK212BJ106KD 0.1 F 68 k 15 k 47 pF
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
S-8363 Series Rev.2.0_02
38
The properties of the external parts are shown below.
Table 16 Characteristics of External Parts
Part Part Name Manfuacturer Characteristics
Inductor VLF302510 TDK Corporation 2.2 H, DCR*1 = 0.084 , IMAX*2 = 1.23 A,
L W×H = 3.0 2.5 1.0 mm
Diode
CRS08 TOSHIBA CORPORATION
VF*3 = 0.32 V typ., IF*4 = 1.5 A, VR*5 = 30 V,
L W H = 3.5 1.6 1.08 mm
RB070M-30TR
ROHM Co., Ltd.
VF*3 = 0.44 V typ., IF*4 = 1.5 A, VR*5 = 30 V,
L W H = 3.5 1.6 0.9 mm
RB051LA-40TR VF*3 = 0.35 V max., IF*4 = 3.0 A, VR*5 = 20 V,
L W H = 4.7 2.6 1.05 mm
RB161M-20TR VF*3 = 0.31 V typ., IF*4 = 1.0 A, VR*5 = 20 V,
L W H = 3.5 1.6 0.9 mm
RB161SS-20T2R VF*3 = 0.42 V, IF*4 = 1.0 A, VR*5 = 20 V,
L W H = 1.6 0.8 0.603 mm
Capacitor
LMK212BJ106KD
TAIYO YUDEN Co., Ltd.
10 F, EDC*6 = 10 V, X5R,
L W H = 2.0 1.25 0.95 mm
EMK107B7105KA 10 F, EDC*6 = 16 V, X7R,
L W H = 1.6 0.8 0.9 mm
C1608X5R0J106M
TDK Corporation
10 F, EDC*6 = 6.3 V, X5R,
L W H = 1.6 0.8 0.9 mm
C1608X7R1C105K 1 F, EDC*6 = 16 V, X7R,
L W H = 1.6 0.8 0.9 mm
* 1. DCR : DC resistance
* 2. IMAX : Maximum allowable current
* 3. VF : Forward voltage
* 4. IF : Forward current
* 5. VR : Reverse voltage
* 6. EDC : Rated voltage
Caution The values shown in the characteristics column of Table 16 above are based on the materials provided
by each manufacture. However, consider the characteristics of the original materials when using the
above products.
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
Rev.2.0_02 S-8363 Series
39
2. Output Current (IOUT) vs. Efficiency () Characteristics, Output Current (IOUT) vs. Output Voltage
(VOUT) Characteristics
Following shows the actual output current (IOUT) vs. efficiency () and output current (IOUT) vs. output voltage (VOUT)
characteristics for conditions 1 to 7 in Table 15.
Condition 1 S-8363B (VOUT(S) = 1.8 V)
0.01 1000
100
0
50
70
80
30
10
20
40
60
90
0.1 1 10 100
IOUT [mA]
η [%]
V
IN
= 0.9 V
V
IN
= 1.2 V
V
IN
= 1.5 V
0.01 1000
1.90
1.70
1.80
1.84
1.86
1.76
1.72
1.74
1.78
1.82
1.88
0.1 1 10 100
I
OUT
[mA]
VOUT [V]
V
IN
= 0.9 V
V
IN
= 1.2 V
V
IN
= 1.5 V
Condition 2 S-8363B (VOUT(S) = 3.3 V)
0.01 1000
100
0
50
70
80
30
10
20
40
60
90
0.1 1 10 100
I
OUT
[mA]
η [%]
V
IN
= 0.9 V
V
IN
= 1.2 V
V
IN
= 1.8 V
V
IN
= 2.5 V
V
IN
= 3.0 V
0.01 1000
3.40
3.20
3.30
3.34
3.36
3.26
3.22
3.24
3.28
3.32
3.38
0.1 1 10 100
I
OUT
[mA]
V
OUT
[V]
V
IN
= 0.9 V
V
IN
= 1.2 V
V
IN
= 1.8 V
V
IN
= 2.5 V
V
IN
= 3.0 V
Condition 3 S-8363B (VOUT(S) = 5.0 V)
0.01 1000
100
0
50
70
80
30
10
20
40
60
90
0.1 1 10 100
I
OUT
[mA]
η [%]
V
IN
= 1.8 V
V
IN
= 2.4 V
V
IN
= 3.0 V
V
IN
= 4.2 V
V
IN
= 4.5 V
0.01 1000
5.10
4.90
5.00
5.04
5.06
4.96
4.92
4.94
4.98
5.02
5.08
0.1 1 10 100
I
OUT
[mA]
V
OUT
[V]
V
IN
= 1.8 V
V
IN
= 2.4 V
V
IN
= 3.0 V
V
IN
= 4.5 V
V
IN
= 4.2 V
Condition 4 S-8363B (VOUT(S) = 3.3 V)
0.01 1000
100
0
50
70
80
30
10
20
40
60
90
0.1 1 10 100
IOUT [mA]
η [%]
V
IN
= 0.9 V
V
IN
= 1.2 V
V
IN
= 1.8 V
V
IN
= 2.5 V
V
IN
= 3.0 V
0.01 1000
3.40
3.20
3.30
3.34
3.36
3.26
3.22
3.24
3.28
3.32
3.38
0.1 1 10 100
I
OUT
[mA]
VOUT [V]
VIN = 0.9 V
VIN = 1.2 V
VIN = 1.8 V
VIN = 2.5 V
VIN = 3.0 V
0.01 1000
100
0
50
70
80
30
10
20
40
60
90
0.1 1 10 100
I
OUT
[mA]
η [%]
V
IN
= 0.9 V
V
IN
= 1.2 V
V
IN
= 1.8 V
V
IN
= 2.5 V
V
IN
= 3.0 V
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
S-8363 Series Rev.2.0_02
40
Condition 5 S-8363B (VOUT(S) = 3.3 V)
0.01 1000
100
0
50
70
80
30
10
20
40
60
90
0.1 1 10 100
I
OUT
[mA]
η [%]
V
IN
= 0.9 V
V
IN
= 1.2 V
V
IN
= 1.8 V
V
IN
= 2.5 V
V
IN
= 3.0 V
0.01 1000
3.40
3.20
3.30
3.34
3.36
3.26
3.22
3.24
3.28
3.32
3.38
0.1 1 10 100
I
OUT
[mA]
V
OUT
[V]
V
IN
= 0.9 V
V
IN
= 1.2 V
V
IN
= 1.8 V
V
IN
= 2.5 V
V
IN
= 3.0 V
Condition 6 S-8363B (VOUT(S) = 3.3 V)
0.01 1000
100
0
50
70
80
30
10
20
40
60
90
0.1 1 10 100
IOUT [mA]
η [%]
V
IN
= 0.9 V
V
IN
= 1.2 V
V
IN
= 1.8 V
V
IN
= 2.5 V
V
IN
= 3.0 V
0.01 1000
3.40
3.20
3.30
3.34
3.36
3.26
3.22
3.24
3.28
3.32
3.38
0.1 1 10 100
I
OUT
[mA]
VOUT [V]
VIN = 0.9 V
VIN = 1.2 V
VIN = 1.8 V
VIN = 2.5 V
VIN = 3.0 V
Condition 7 S-8363B (VOUT(S) = 3.3 V)
0.01 1000
100
0
50
70
80
30
10
20
40
60
90
0.1 1 10 100
I
OUT
[mA]
η [%]
V
IN
= 0.9 V
V
IN
= 1.2 V
V
IN
= 1.8 V
V
IN
= 2.5 V
V
IN
= 3.0 V
0.01 1000
3.40
3.20
3.30
3.34
3.36
3.26
3.22
3.24
3.28
3.32
3.38
0.1 1 10 100
I
OUT
[mA]
V
OUT
[V]
V
IN
= 0.9 V
V
IN
= 1.2 V
V
IN
= 1.8 V
V
IN
= 2.5 V
V
IN
= 3.0 V
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
Rev.2.0_02 S-8363 Series
41
3. Output Current (IOUT) vs. Ripple Voltage (Vr) Characteristics
Following shows the actual output current (IOUT) vs. ripple voltage (Vr) characteristics for conditions of 1 to 7 in
Table 15.
Condition 1 S-8363B (VOUT(S) = 1.8 V) Condition 2 S-8363B (VOUT(S) = 3.3 V)
0.01 1000
50
0
25
35
40
15
5
10
20
30
45
0.1 1 10 100
I
OUT
[mA]
Vr [
mV
]
V
IN
= 1.5 V
V
IN
= 1.2 V
V
IN
= 0.9 V
0.01 1000
50
0
25
35
40
15
5
10
20
30
45
0.1 1 10 100
I
OUT
[mA]
V
r
[
mV
]
V
IN
= 1.8 V
V
IN
= 2.5 V
V
IN
= 0.9 V
V
IN
= 1.2 V
V
IN
= 3.0 V
Condition 3 S-8363B (VOUT(S) = 5.0 V) Condition 4 S-8363B (VOUT(S) = 3.3 V)
0.01 1000
50
0
25
35
40
15
5
10
20
30
45
0.1 1 10 100
IOUT [mA]
V
r
[
mV
]
V
IN
= 3.0 V
V
IN
= 2.4 V
V
IN
= 4.5 V
V
IN
= 4.2 V V
IN
= 1.8 V
0.01 1000
50
0
25
35
40
15
5
10
20
30
45
0.1 1 10 100
I
OUT
[mA]
Vr [
mV
]
V
IN
= 1.8 V
V
IN
= 1.2 V
VIN = 3.0 V
VIN = 2.5 V
V
IN
= 0.9 V
Condition 5 S-8363B (VOUT(S) = 3.3 V) Condition 6 S-8363B (VOUT(S) = 3.3 V)
0.01 1000
50
0
25
35
40
15
5
10
20
30
45
0.1 1 10 100
I
OUT
[mA]
Vr [
mV
]
V
IN
= 1.8 V
V
IN
= 1.2 V
V
IN
= 3.0 V
V
IN
= 2.5 V V
IN
= 0.9 V
0.01 1000
50
0
25
35
40
15
5
10
20
30
45
0.1 1 10 100
I
OUT
[mA]
V
r
[
mV
]
V
IN
= 1.8 V
V
IN
= 1.2 V
V
IN
= 3.0 V
V
IN
= 2.5 V V
IN
= 0.9 V
Condition 7 S-8363B (VOUT(S) = 3.3 V)
0.01 1000
50
0
25
35
40
15
5
10
20
30
45
0.1 1 10 100
I
OUT
[mA]
Vr [
mV
]
V
IN
= 1.8 V
V
IN
= 1.2 V
V
IN
= 3.0 V
V
IN
= 2.5 V V
IN
= 0.9 V
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
S-8363 Series Rev.2.0_02
42
Marking Specification
(1) SNT-6A
SNT-6A
Top view
1
2
3 4
6
5
(1)
(4)
(2)
(5)
(3)
(6)
(1) to (3) : Product code (Refer to Product name vs. Product code)
(4) to (6) : Lot number
Product name vs. Product code
Product name Product code
(1) (2) (3)
S-8363B-I6T1U2 I 9 B
(2) SOT-23-6
6 4
1 3
2
(1) (2) (3) (4)
SOT-23-6
Top view
5
(1) to (3) : Product code (Refer to Product name vs. Product code)
(4) : Lot number
Product name vs. Product code
Product name Product code
(1) (2) (3)
S-8363B-M6T1U2 I 9 B
Remark Please select products of environmental code = U for Sn 100%, halogen-free products.
No.
TITLE
UNIT
ANGLE
ABLIC Inc.
mm
SNT-6A-A-PKG Dimensions
PG006-A-P-SD-2.1
No. PG006-A-P-SD-2.1
0.2±0.05
0.48±0.02
0.08 +0.05
-0.02
0.5
1.57±0.03
123
45
6
No.
TITLE
UNIT
ANGLE
ABLIC Inc.
Feed direction
4.0±0.1
2.0±0.05
4.0±0.1
ø1.5 +0.1
-0
ø0.5
1.85±0.05 0.65±0.05
0.25±0.05
mm
PG006-A-C-SD-2.0
SNT-6A-A-Carrier Tape
No. PG006-A-C-SD-2.0
+0.1
-0
1
2
4
3
56
No.
TITLE
UNIT
ANGLE
ABLIC Inc.
12.5max.
9.0±0.3
ø13±0.2
(60°) (60°)
QTY.
No. PG006-A-R-SD-1.0
PG006-A-R-SD-1.0
Enlarged drawing in the central part
SNT-6A-A-Reel
5,000
mm
No.
TITLE
UNIT
ANGLE
ABLIC Inc.
mm
SNT-6A-A
-Land Recommendation
PG006-A-L-SD-4.1
No. PG006-A-L-SD-4.1
0.3
0.2
0.52
1.36
0.52
1
2
Caution 1. Do not do silkscreen printing and solder printing under the mold resin of the package.
2. The thickness of the solder resist on the wire pattern under the package should be 0.03 mm
or less from the land pattern surface.
3. Match the mask aperture size and aperture position with the land pattern.
4. Refer to "SNT Package User's Guide" for details.
1. (0.25 mm min. / 0.30 mm typ.)
2. (1.30 mm ~ 1.40 mm)
0.03 mm
SNT
1. Pay attention to the land pattern width (0.25 mm min. / 0.30 mm typ.).
2. Do not widen the land pattern to the center of the package ( 1.30 mm ~ 1.40 mm ).
1.
2. (1.30 mm ~ 1.40 mm)
(0.25 mm min. / 0.30 mm typ.)
No.
TITLE
UNIT
ANGLE
ABLIC Inc.
2.9±0.2
0.15
1.9±0.2
123
4
65
0.35±0.15
0.95
+0.1
-0.05
0.95
mm
No. MP006-A-P-SD-2.1
MP006-A-P-SD-2.1
SOT236-A-PKG Dimensions
No.
TITLE
UNIT
ANGLE
ABLIC Inc.
mm
123
45
6
ø1.5 +0.1
-0 2.0±0.05
ø1.0 +0.2
-0 4.0±0.1
1.4±0.2
0.25±0.1
3.2±0.2
No. MP006-A-C-SD-3.1
MP006-A-C-SD-3.1
SOT236-A-Carrier Tape
Feed direction
4.0±0.1(10 pitches:40.0±0.2)
No.
TITLE
UNIT
ANGLE
ABLIC Inc.
mm
12.5max.
9.0±0.3
ø13±0.2
(60°) (60°)
QTY 3,000
Enlarged drawing in the central part
No. MP006-A-R-SD-2.1
MP006-A-R-SD-2.1
SOT236-A-Reel
Disclaimers (Handling Precautions)
1. All the information described herein
(product data,
specifications,
figures,
tables,
programs,
algorithms and application
circuit examples,
etc.)
is current as of publishing date of this document and is subject to change without notice.
2. The circuit examples and the usages described herein are for reference only, and do not guarantee the success of
any specific mass-production design.
ABLIC Inc. is not responsible for damages caused by the reasons other than the products described herein
(hereinafter "the products") or infringement of third-party intellectual property right and any other right due to the use
of the information described herein.
3. ABLIC Inc. is not responsible for damages caused by the incorrect information described herein.
4. Be careful to use the products within their specified ranges. Pay special attention to the absolute maximum ratings,
operation voltage range and electrical characteristics, etc.
ABLIC Inc. is not responsible for damages caused by failures and / or accidents, etc. that occur due to the use of the
products outside their specified ranges.
5. When using the products, confirm their applications, and the laws and regulations of the region or country where they
are used and verify suitability, safety and other factors for the intended use.
6. When exporting the products, comply with the Foreign Exchange and Foreign Trade Act and all other export-related
laws, and follow the required procedures.
7. The products must not be used or provided (exported) for the purposes of the development of weapons of mass
destruction or military use. ABLIC Inc. is not responsible for any provision (export) to those whose purpose is to
develop, manufacture, use or store nuclear, biological or chemical weapons, missiles, or other military use.
8. The products are not designed to be used as part of any device or equipment that may affect the human body, human
life, or assets (such as medical equipment, disaster prevention systems, security systems, combustion control
systems, infrastructure control systems, vehicle equipment, traffic systems, in-vehicle equipment, aviation equipment,
aerospace equipment, and nuclear-related equipment), excluding when specified for in-vehicle use or other uses. Do
not apply the products to the above listed devices and equipments without prior written permission by ABLIC Inc.
Especially, the products cannot be used for life support devices, devices implanted in the human body and devices
that directly affect human life, etc.
Prior consultation with our sales office is required when considering the above uses.
ABLIC Inc. is not responsible for damages caused by unauthorized or unspecified use of our products.
9. Semiconductor products may fail or malfunction with some probability.
The user of the products should therefore take responsibility to give thorough consideration to safety design including
redundancy, fire spread prevention measures, and malfunction prevention to prevent accidents causing injury or
death, fires and social damage, etc. that may ensue from the products' failure or malfunction.
The entire system must be sufficiently evaluated and applied on customer's own responsibility.
10. The products are not designed to be radiation-proof. The necessary radiation measures should be taken in the
product design by the customer depending on the intended use.
11. The products do not affect human health under normal use. However, they contain chemical substances and heavy
metals and should therefore not be put in the mouth. The fracture surfaces of wafers and chips may be sharp. Be
careful when handling these with the bare hands to prevent injuries, etc.
12. When disposing of the products, comply with the laws and ordinances of the country or region where they are used.
13. The information described herein contains copyright information and know-how of ABLIC Inc.
The information described herein does not convey any license under any intellectual property rights or any other
rights belonging to ABLIC Inc. or a third party. Reproduction or copying of the information from this document or any
part of this document described herein for the purpose of disclosing it to a third-party without the express permission
of ABLIC Inc. is strictly prohibited.
14. For more details on the information described herein, contact our sales office.
2.2-2018.06
www.ablic.com
