RP173x SERIES
11V Input 150mA LDO
NO.EA-256-111020
1
OUTLINE
The RP173x Series are CMOS-based voltage regulator ICs featuring 150 mA output and low supply current of
Typ.2.0μA. Each of these ICs consists of a voltage reference unit, an error amplifier, a resistor-net for voltage
setting, a current limit circuit, a chip enable circuit and a Reverse Current Protection Circuit. RP173x Series are
suitable for the power source such as the equipment being in the standby-mode. A version with /CE input pin has
reduced CE pull-up resistance to make its supply current ultra low.
The RP173x Series have Max.11V Input voltage and are applicable to the portable communication equipment
that require the 2-cell Li-ion battery. Also they are applicable to the non-portable communication equipments. As
this series includes Reverse Current Protection Circuit, there is little leakage current, if it's used as back-up
circuit.
Since the packages for these ICs are the SOT-23-5 package, SC-88A, or DFN(PLP)1010-4 of 1mm square,
high density mounting of the ICs on boards is possible.
FEATURES
• Output Current ............................................................. Typ. 150mA
• Supply Current ............................................................. Typ. 2.0μA
• Standby Current ........................................................... Typ. 0.2μA
• Input Voltage Range .................................................... 2.5V to Set VOUT+6.5V (Max.11V)
• Output Voltage Range.................................................. 1.2V to 5.5V (0.1V steps)
(
For other voltages, please refer to MARK INFORMATIONS.)
• Dropout Voltage ........................................................... Typ. 0.13V ( IOUT=30mA, VOUT=3.0V)
Typ. 0.90V ( IOUT=150mA, VOUT=3.0V)
• Output Voltage Accuracy.............................................. ±1.0%(1.5V < VOUT ≤ 5.5V, Topt=25°C)
• Temperature-drift Coefficient of Output Voltage........... Typ. ±100ppm/°C
• Line Regulation ............................................................ Typ. 0.02%/V
• Packages ..................................................................... DFN(PLP)1010-4, SC-88A, SOT-23-5
• Built-in Reverse Current Protection Circuit
• Short Current Limit....................................................... Typ. 45mA
• Built-in Peak Current Limit Circuit
• Output capacitors......................................................... 0.1μF or more
APPLICATIONS
• Power source for portable communication equipments.
• Power source for battery-powerd equipments.
• Power source for electrical appliances such as cameras, VSRs and camcorders.
• Power source for digital home appliances.
RP173x
2
BLOCK DIAGRAMS
RP173xxxxA RP173xxxxB
V
DD
GND
V
OUT
CE
Vref
Current Limit
Reverse
Detecto
r
V
DD
GND
V
OUT
CE
Vref
Current Limit
Reverse
Detector
(Pull-up resistance is not built-in.)
RP173xxxxD
V
DD
GND
V
OUT
CE
Vref
Current Limit
Reverse
Detector
SELECTION GUIDE
The output voltage, auto discharge function, package for the ICs can be selected at the user’s request.
Product Name Package Quantity per Reel Pb Free Halogen Free
RP173Kxx1∗-TR DFN(PLP)1010-4 10,000 pcs Yes Yes
RP173Qxx2∗-TR-FE SC-88A 3,000 pcs Yes Yes
RP173Nxx1∗-TR-FE SOT-23-5 3,000 pcs Yes Yes
xx : The output voltage can be designated in the range of 1.2V (12) to 5.5V (55) in 0.1V steps.
(For other voltages, please refer to MARK INFORMATIONS.)
∗ : The auto discharge function at off state are options as follows.
(A) "L" acrive, without auto discharge function at off state (Pull-up resistance is not built-in.)
(B) "H" active, without auto discharge function at off state
(D) "H" active, with auto discharge function at off state
RP173x
3
PIN CONFIGURATIONS
•
DFN(PLP)1010-4
•
SC-88A
•
SOT-23-5
Top View
2 1
3 4
Bottom View
12
43
∗
54
13
2
(mark side)
1 2 3
4
5
(mark side)
PIN DESCRIPTIONS
zDFN(PLP)1010-4
Pin No. Symbol Description
1 VOUT Output Pin
2 GND Ground Pin
3
CE
/CE Chip Enable Pin
4 VDD Input Pin
∗) Tab is GND level. (They are connected to the reverse side of this IC.)
The tab is better to be connected to the GND, but leaving it open is also acceptable.
zSC-88A
Pin No. Symbol Description
1
CE
/CE Chip Enable Pin
2 NC No Connection
3 GND Ground Pin
4 VOUT Output Pin
5 VDD Input Pin
zSOT-23-5
Pin No. Symbol Description
1 VDD Input Pin
2 GND Ground Pin
3
CE
/CE Chip Enable Pin
4 NC No Connection
5 VOUT Output Pin
RP173x
4
ABSOLUTE MAXIMUM RATINGS
Symbol Item Rating Unit
VIN Input Voltage 12 V
VCE Input Voltage (CE pin) 12 V
VOUT Output Voltage −0.3 to 6.0 V
IOUT Output Current 165 mA
Power Dissipation (DFN(PLP)1010-4)* 400
Power Dissipation (SC-88A)* 380
PD
Power Dissipation (SOT-23-5)* 420
mW
Topt Operating Temperature Range −40 to +85 °C
Tstg Storage Temperature Range −55 to +125 °C
∗) For Power Dissipation, please refer to PACKAGE INFORMATION.
ABSOLUTE MAXIMUM RATINGS
Electronic and mechanical stress momentarily exceeded absolute maximum ratings may cause the
permanent damages and may degrade the life time and safety for both device and system using the device
in the field. The functional operation at or over these absolute maximum ratings is not assured.
RP173x
5
ELECTRICAL CHARACTERISTICS
Unless otherwise noted,VIN=Set VOUT +1.0V(VOUT >1.5), IOUT=1mA,CIN=COUT=0.1μF.
The values in are applicable under the condition of −40°C ≤ Topt ≤ 85°C.
• RP173xxxxA Topt=25°C
Symbol Item Conditons Min. Typ. Max. Unit
VOUT＞1.5V ×0.99 ×1.01 V
Topt=25°C VOUT ≤ 1.5V −15 15 mV
VOUT＞1.5V ×0.982 ×1.018 V
VOUT Output Voltage
−40°C ≤ Topt ≤ 85°C
VOUT ≤ 1.5V
−
28 27 mV
IOUT Output Current 150 mA
ΔVOUT/ΔIOUT Load Regulation 0.1mA ≤ IOUT ≤ 150mA −30 −3 35 mV
VDIF Dropout Voltage Refer to the "Dropout Voltage"
ISS Supply Current IOUT=0mA 2.0
3.7 μA
Istandby Standby Current VIN=VIN（Max.）
VCE=0V 0.2 0.6
μA
ΔVOUT/ΔVIN Load Regulation
Set VOUT+0.5V ≤ VIN ≤ VIN（Max.）
When VOUT ≤ 2.0V,
2.5V ≤ VIN ≤ VIN（Max.）
0.02
0.20 %/V
RR Ripple Rejection
ｆ=1kHz,
Rippke 0.2Vp−p,IOUT=10mA
※When VOUT＜2.0V,VIN=3.0V
30 dB
1.2 ≤ VOUT < 4.5 2.5 Vset+6.5
VIN Input Voltage
4.5 ≤ VOUT ≤ 5.5 2.5 11
V
ΔVOUT/ΔTopt Output Voltage
Temperature Coefficient −40°C ≤ Topt ≤ 85°C ±100 ppm
/℃
ISC Short Current Limit Circuit VOUT=0V 45 mA
VCEH
CE
Input Voltage"H" 1.7 V
VCEL
CE
Input Voltage"L"
0.8 V
IREV Reverse Current 0 ≤ VIN ≤ 11.0V, VOUT ≥ 1.5V 0 0.16 μA
VREV_DET*
Reverse Current
Protection Mode
Detection Offset,
VREV=VDD−VOUT
0 ≤ VIN ≤ 11.0V, VOUT ≥ 1.5V 55 100 mV
VREV_REL*
Reverse Current
Protection Mode
Release Offset
0 ≤ VIN ≤ 11.0V, VOUT ≥ 1.5V 70 120 mV
The values in have been tested and guaranteed by Design Engineering.
All of units are tested and specified under the pulse load conditions such that Tj≈Topt25°C except for Ripple
Rejection and Output Voltage Temperature Coefficient.
*) The operation coverage of the Reverse Current Protection Circuit is VOUT ≥ 1.5V. However, under the
condition of VIN=VOUT=0V, always the Reverse Current Protection Circuit is operating.
RP173x
6
Unless otherwise noted,VIN=Set VOUT +1.0V(VOUT >1.5), IOUT=1mA, CIN=COUT=0.1μF.
The values in are applicable under the condition of −40°C ≤ Topt ≤ 85°C.
• RP173xxxxB/D Topt=25°C
Symbol Item Conditons Min. Typ. Max. Unit
VOUT＞1.5V ×0.99 ×1.01 V
Topt=25°C VOUT ≤ 1.5V −15 15 mV
VOUT＞1.5V ×0.982 ×1.018 V
VOUT Output Voltage
−40°C ≤ Topt ≤ 85°C
VOUT ≤ 1.5V
−
28 27 mV
IOUT Output Current 150 mA
ΔVOUT/ΔIOUT Load Regulation 0.1mA ≤ IOUT ≤ 150mA −30 −3 35 mV
VDIF Dropout Voltage Refer to the "Dropout Voltage"
ISS Supply Current IOUT=0mA 2.0
3.7 μA
Istandby Standby Current VIN=VIN_Max.
VCE=0V 0.2 0.6
μA
ΔVOUT/ΔVIN Load Regulation
Set VOUT+0.5V≦VIN≦VIN_Max.
When VOUT ≤ 2.0V,
2.5V ≤ VIN ≤ Set VOUT+6.5V
0.02
0.20 %/V
RR Ripple Rejection
ｆ=1kHz,
Rippke 0.2Vp−p,IOUT=10mA
※When VOUT＜2.0V,VIN=3.0V
30 dB
1.2 ≤ VOUT < 4.5 2.5 Vset+6.5
VIN Input Voltage
4.5 ≤ VOUT ≤ 5.5 2.5 11
V
ΔVOUT/ΔTopt Output Voltage
Temperature Coefficient −40°C ≤ Topt ≤ 85°C ±100 ppm
/℃
ISC Short Current Limit Circuit VOUT=0V 45 mA
IPD CE Pull-down Current 0.30 0.90 μA
VCEH CE Input Voltage"H" 1.7 V
VCEL CE Input Voltage"L" 0.8 V
IREV Reverse Current 0 ≤ VIN ≤ 11.0V, VOUT ≥ 1.5V 0 0.16 μA
VREV_DET*
Reverse Current
Protection Mode
Detection Offset,
VREV=VDD−VOUT
0 ≤ VIN ≤ 11.0V, VOUT ≥ 1.5V 55 100 mV
VREV_REL*
Reverse Current
Protection Mode
Release Offset
0 ≤ VIN ≤ 11.0V, VOUT ≥ 1.5V 70 120 mV
RLOW
Autodischarge Nch Tr.
ON Resistance
（D Version only）
VIN=7.0V, VCE=0V 380 Ω
The values in have been tested and guaranteed by Design Engineering.
All of units are tested and specified under the pulse load conditions such that Tj≈Topt=25°C except for Ripple
Rejection and Output Voltage Temperature Coefficient.
*) The operation coverage of the Reverse Current Protection Circuit is VOUT ≥ 1.5V. However, under the
condition of VIN=VOUT=0V, always the Reverse Current Protection Circuit is operating.
RP173x
7
• Dropout Voltage Topt=25°C
Dropout Voltage VDIF (V)
Output Voltage
VOUT (V) Condition Typ. Max.
1.2 ≤ VOUT < 1.3 1.68 2.59
1.3 ≤ VOUT < 1.5 1.63 2.49
1.5 ≤ VOUT < 1.8 1.48 2.23
1.8 ≤ VOUT < 2.3 1.16 2.19
2.3 ≤ VOUT < 3.0 0.90 1.47
3.0 ≤ VOUT < 4.0 0.61 1.05
4.0 ≤ VOUT ≤ 5.5
IOUT=150mA
0.39 0.76
The values in are applicable under the condition of −40°C ≤ Topt ≤ 85°C.
RECOMMENDED OPERATING CONDITIONS (ELECTRICAL CHARACTERISTICS)
All of electronic equipment should be designed that the mounted semiconductor devices operate within the
recommended operating conditions. The semiconductor devices cannot operate normally over the
recommended operating conditions, even if when they are used over such conditions by momentary
electronic noise or surge. And the semiconductor devices may receive serious damage when they continue
to operate over the recommended operating conditions.
RP173x
8
TYPICAL APPLICATIONS
C1 RP173x
Series
VDD VOUT
CE GND
C2
VOUT
External Parts Example:
C2: Ceramic Capacitor 0.1µF, Murata,GRM155B31C104KA87D
TECHNICAL NOTES
When using the ICs, please note the following points.
Phase Compensation
In these ICs, phase compensation is made for securing stable operation even if the load current is varied. For
this purpose, use a 0.1μF or more capacitor C2.
In case of using a tantalum capacitor, the output may be unstable due to inappropriate ESR. Therefore, the full
range of operating conditions for the capacitor in the application should be considered.
PCB Layout
Make VDD and GND lines sufficient. If their impedance is high, noise pickup or unstable operation may result.
Connect a capacitor C1 with a capacitance value as much as 0.1μF or more between VDD and GND pin, and as
close as possible to the pins.
Set external components, especially the output capacitor C2, as close as possible to the ICs, and make wiring
as short as possible.
POWER ACTIVATION
If the ICs are started up with VIN and VCE under the no-load condition, the both pin voltages have to be started
up with faster than 2.0V/s. If the IC is started up with slower than 2.0V/s under the no-load condition, start up the
IC only with VCE.
RP173x
9
REVERSE CURRENT PROTECTION CIRCUIT
The RP173 Series include a Reverse Current Protection Circuit, which stops the reverse current from VOUT pin
to VDD pin or to GND pin when VOUT becomes higher than VIN.
Usually, the LDO using Pch output transistor contains a parasitic diode between VDD pin and VOUT pin.
Therefore, if VOUT is higher than VIN, the parasitic diode becomes forward direction. As a result, the current flows
from VOUT pin to VDD pin.
The ICs of this series switches the mode to the reverse current protection mode before VIN becomes lower
than VOUT by connecting the parasitic diode of Pch output transistor to the backward direction, and connecting
the gate to VOUT pin. As a result, the Pch output transistor is turned off and the all the current pathways from VOUT
pin to GND pin are shut down to maintain the reverse current lower than [IREV] of the Electrical Characteristics.
Switching to either the normal mode or to the reverse current protection mode is determined by the magnitude
of VIN voltage and VOUT voltage. For the stable operation, offset and hysteresis are set as the threshold. The
detection/ release thresholds of both normal and reverse current protection modes are specified by [VREV_DET]
and [VREV_REL] of the Electrical Characteristics. Therefore, the minimum dropout voltage under the small load
current condition is restricted by the value of [VREV_REL].
Fig.1 and Fig.2 show the diagrams of each mode, and Fig.3 shows the load characteristics of each mode.
When giving the VOUT pin a constant-voltage and decreasing the VIN voltage, the dropout voltage will become
lower than the [VREV_DET]. As a result, the reverse current protection starts to function to stop the load current. By
increasing the dropout voltage higher than the [VREV_REL], the protection mode will be released to let the load
current to flow. If the dropout voltage to be used is lower than [VREV_REL], the detection and the release may be
repeated.
The operation coverage of the Reverse Current Protection Circuit is VOUT ≥ 1.5V. However, under the condition
of VIN=0V, always the reverse current protection mode is operating.
Fig. 1 Normal Mode Fig. 2 Reverse Current Protection Mode
Fig. 3 Reverse Current Protection Mode Detection/ Release &
Output/Reverse Current Input/Output Voltage
VREV_ DET
VREV_ REL
VOUT
VIN
0
Reverse Current Protection ModeNormal Mode Normal Mode
VIN/VOUT [V]IOUT/IREV
IOUT
IREV
Reverse Current/ Output Current Characteristics
RP173x
10
TEST CIRCUITS
C1 RP173x
Series
V
DD
V
OUT
CE GND
V
C2 V
OUT
I
OUT
C1=Ceramic 0.1μF
C2=Ceramic 0.1μF
Basic Test Circuit
C1 RP173x
Series
V
DD
V
OUT
CE GND
C2
A I
SS
C1=Ceramic 0.1μF
C2=Ceramic 0.1μF
V
OUT
Supply Current Test Circuit
RP173x
Series
V
DD
V
OUT
CE GND
C2
Pulse
Generator
I
OUT
C2=Ceramic 0.1μF
P. G.
Ripple Rejection Test Circuit
C1 RP173x
Series
V
DD
V
OUT
CE GND
C2
I
OUTa
I
OUTb
C1=Ceramic 0.1μF
C2=Ceramic 0.1μF
V
OUT
Load Transient Response Test Circuit
RP173x
11
TYPICAL CHARACTERISTICS
1) Output Voltage vs. Output Current （C1=Ceramic 0.1μF, C2=Ceramic 0.1μF, Topt=25°C）
RP173x12xx RP173x18xx
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
0 100 200 300 400
Output Current I
OUT
(mA)
Output Voltage V
OUT
(V)
Vdd=2.5V
Vdd=3.2V
Vdd=4.2V
Vdd=5.5V
Vdd=7.7V
0
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
0 100 200 300 400
Output Current IOUT (mA)
Output Voltage VOUT (V)
Vdd=2.8V
Vdd=3.8V
Vdd=5.5V
Vdd=8.3V
0
RP173x30xx RP173x55xx
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
0 100 200 300 400
Output Current IOUT (mA)
Output Voltage VOUT (V)
Vdd=4V
Vdd=5.5V
Vdd=9.5V
0
0
1
2
3
4
5
6
0 100 200 300 400
Output Current IOUT (mA)
Output Voltage VOUT (V)
Vdd=6.5V
Vdd=11V
0
2） Output Voltage vs. Input Voltage (C1=Ceramic 0.1μF, C2=Ceramic 0.1μF, Topt=25°C）
RP173x12xx RP173x18xx
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
0246
Input Voltage VIN (V)
Output Voltage VOUT (V)
IOUT=1mA
IOUT=30mA
IOUT=50mA
0
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
02468
Input Voltage V
IN
(V)
Output Voltage V
OUT
(V)
IOUT=1mA
IOUT=30mA
IOUT=50mA
0
RP173x
12
RP173x30xx RP173x55xx
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
02468
Input Voltage V
IN
(V)
Output Voltage V
OUT
(V)
IOUT=1mA
IOUT=30mA
IOUT=50mA
0
0
1
2
3
4
5
6
0246810
Input Voltage V
IN
(V)
Output Voltage V
OUT
(V)
IOUT=1mA
IOUT=30mA
IOUT=50mA
3） Supply Current vs. Input Voltage （C1=Ceramic 0.1μF, C2=Ceramic 0.1μF, Topt=25°C）
RP173x12xx RP173x18xx
0.0
0.5
1.0
1.5
2.0
2.5
0246
Input Voltage V
OUT
(V)
Supply Current I
SS
(µA)
0
0.0
0.5
1.0
1.5
2.0
2.5
02468
Input Voltage V
OUT
(V)
Supply Current I
SS
(µA)
0
RP173x30xx RP173x55xx
0.0
0.5
1.0
1.5
2.0
2.5
02468
Input Voltage V
OUT
(V)
Supply Current I
SS
(µA)
0
0.0
0.5
1.0
1.5
2.0
2.5
0246810
Input Voltage V
OUT
(V)
Supply Current I
SS
(µA)
0
RP173x
13
4） Output Voltage vs. Temperature (C1=Ceramic 0.1μF, C2=Ceramic 0.1μF, IOUT=1mA）
RP173x12xx RP173x18xx
1.17
1.18
1.19
1.20
1.21
1.22
1.23
1.24
-50 -25 0 25 50 75 100
Temperature Topt (°C)
Output Voltage V
OUT
(V)
1.77
1.78
1.79
1.80
1.81
1.82
1.83
1.84
-50 -25 0 25 50 75 100
Temperature Topt (°C)
Output Voltage V
OUT
(V)
RP173x30xx RP173x55xx
2.96
2.97
2.98
2.99
3.00
3.01
3.02
3.03
-50 -25 0 25 50 75 100
Temperature Topt (°C)
Output Voltage V
OUT
(V)
5.42
5.44
5.46
5.48
5.50
5.52
5.54
5.56
-50 -25 0 25 50 75 100
Temperature Topt (°C)
Output Voltage V
OUT
(V)
5） Dropout Voltage vs. Output Current （C1=Ceramic 0.1μF, C2=Ceramic 0.1μF）
RP173x12xx RP173x30xx
0
200
400
600
800
1000
1200
1400
1600
1800
2000
0 25 50 75 100 125 150
Output Current I
OUT
(mA)
Dropout Voltage V
DIF
(mV)
85℃
25℃
-40℃
0
100
200
300
400
500
600
700
800
0 25 50 75 100 125 150
Output Current IOUT (mA)
Dropout Voltage VDIF (mV)
85℃
25℃
-40℃
RP173x
14
RP173x55xx
0
50
100
150
200
250
300
350
400
450
500
0 25 50 75 100 125 150
Output Current IOUT (mA)
Dropout Voltage VDIF (mV)
85℃
25℃
-40℃
6） Dropout Voltage vs. Set Output Voltage （C1=Ceramic 0.1μF, C2=Ceramic 0.1μF, Topt=25°C）
RP173x
0
200
400
600
800
1000
1200
1400
1600
1800
0123456
Set Output Voltage V
REG
(V)
Dropout Voltage V
DIF
(mV)
Iout=150mA
Iout=50mA
Iout=30mA
7） Minimum Operating Voltage （C1=Ceramic 0.1μF, C2=Ceramic 0.1μF, Topt=−40～85°C）
2.0
2.5
3.0
3.5
4.0
0 25 50 75 100 125 150
Output Current IOUT (mA)
Input Voltage VIN (V)
RP173x
15
8） Ripple Rejection vs. Input Vias Voltage
（
C1
=
none, C2
=
Ceramic 0.1
μ
F, Ripple
=
0.2Vp-p, T
opt
=
25
°
C
）
RP173x28xx RP173x28xx
0
10
20
30
40
50
60
246810
Input Bias Voltage V
IN
(V)
Ripple Rejection RR (dB)
100Hz
1kHz
10kHz
100kHz
I
OUT
=1mA
0
10
20
30
40
50
60
246810
Input Bias Voltage V
IN
(V)
Ripple Rejection RR (dB)
100Hz
1kHz
10kHz
100kHz
I
OUT
=30mA
RP173x28xx
0
10
20
30
40
50
60
246810
Input Bias Voltage V
IN
(V)
Ripple Rejection RR (dB)
100Hz
1kHz
10kHz
100kHz
I
OUT
=50mA
9） Ripple Rejection vs.Temperature （C1=none, C2=Ceramic 0.1μF, Ripple=0.2Vp-p, Topt=25°C）
RP173x12xx RP173x18xx
0
10
20
30
40
50
60
70
0.1 1 10 100 1000
Frequency f (kHz)
Ripple Rejection RR (dB)
Iout=1mA
Iout=30mA
Iout=50mA
V
IN
=2.5V
0
10
20
30
40
50
60
70
0.1 1 10 100 1000
Frequency f (kHz)
Ripple Rejection RR (dB)
Iout=1mA
Iout=30mA
Iout=50mA
V
IN
=2.8V
RP173x
16
RP173x30xx RP173x55xx
0
10
20
30
40
50
60
70
0.1 1 10 100 1000
Frequency f (kHz)
Ripple Rejection RR (dB)
Iout=1mA
Iout=30mA
Iout=50mA
V
IN
=4.0V
0
10
20
30
40
50
60
70
0.1 1 10 100 1000
Frequency f (kHz)
Ripple Rejection RR (dB)
Iout=1mA
Iout=30mA
Iout=50mA
V
IN
=6.5V
10） Input Transient Response （C1=none, C2=Ceramic 0.1μF, tr=tf=5.0μs, Topt=25°C）
RP173x12xx RP173x18xx
0.6
0.8
1.0
1.2
1.4
1.6
-0.1 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
Time t (ms)
Output Voltage V
OUT
(V)
2.5
3.0
3.5
4.0
Input Voltage V
IN
(V)
Input Voltage
Output Voltage
I
OUT
=1mA
1.2
1.4
1.6
1.8
2.0
2.2
-0.1 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
Time t (ms)
Output Voltage V
OUT
(V)
2.5
3.0
3.5
4.0
Input Voltage V
IN
(V)
Input Voltage
Output Voltage
I
OUT
=1mA
RP173x30xx RP173x55xx
2.4
2.6
2.8
3.0
3.2
3.4
-0.1 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
Time t (ms)
Output Voltage V
OUT
(V)
4.0
4.5
5.0
5.5
Input Voltage V
IN
(V)
Input Voltage
Output Voltage
I
OUT
=1mA
4.9
5.1
5.3
5.5
5.7
5.9
-0.1 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
Time t (ms)
Output Voltage V
OUT
(V)
6.5
7.0
7.5
8.0
Input Voltage V
IN
(V)
Input Voltage
Output Voltage
I
OUT
=1mA
RP173x
17
RP173x12xx RP173x18xx
0.6
0.8
1.0
1.2
1.4
1.6
-0.1 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
Time t (ms )
Output Voltage V
OUT
(V)
2.5
3.0
3.5
4.0
Input Voltage V
IN
(V)
Input Voltage
Output Voltage
I
OUT
=30mA
1.2
1.4
1.6
1.8
2.0
2.2
-0.1 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
Time t (ms )
Output Voltage V
OUT
(V)
2.5
3.0
3.5
4.0
Input Voltage V
IN
(V)
Input Voltage
Output Voltage
I
OUT
=30mA
RP173x30xx RP173x55xx
2.4
2.6
2.8
3.0
3.2
3.4
-0.1 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
Time t (ms)
Output Voltage VOUT (V)
4.0
4.5
5.0
5.5
Input Voltage VIN (V)
Input Voltage
Output Voltage
IOUT=30mA
4.9
5.1
5.3
5.5
5.7
5.9
-0.1 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
Time t (ms)
Output Voltage VOUT (V)
6.5
7.0
7.5
8.0
Input Voltage VIN (V)
Input Voltage
Output Voltage
IOUT=30mA
11） Load Transient Response （C1=Ceramic 0.1μF,C2=Ceramic 0.1μF, tr=tf=0.5μs,Topt=25°C）
RP173x12xx RP173x18xx
0.6
0.8
1.0
1.2
1.4
1.6
-0.1 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
Time t (ms)
Output Voltage V
OUT
(V)
0
10
20
Output Current I
OUT
(mA)
Output Current
1mA⇔10mA
Output Voltage
V
IN
=2.5V
1.2
1.4
1.6
1.8
2.0
2.2
-0.1 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
Time t (ms )
Output Voltage V
OUT
(V)
0
10
20
Output Current I
OUT
(mA)
Output Current
1mA⇔10mA
Output Voltage
V
IN
=2.8V
RP173x
18
RP173x30xx RP173x55xx
2.4
2.6
2.8
3.0
3.2
3.4
-0.1 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
Time t (ms)
Output Voltage V
OUT
(V)
0
10
20
Output Current I
OUT
(mA)
Output Current
1mA⇔10mA
Output Voltage
V
IN
=4.0V
4.9
5.1
5.3
5.5
5.7
5.9
-0.1 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
Time t (ms)
Output Voltage V
OUT
(V)
0
10
20
Output Current I
OUT
(mA)
Output Current
1mA⇔10mA
Output Voltage
V
IN
=6.5V
RP173x12xx RP173x18xx
0.3
0.6
0.9
1.2
1.5
1.8
-0.1 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
Time t (ms)
Output Voltage V
OUT
(V)
0
50
100
150
Output Current I
OUT
(mA)
Output Current
50mA⇔100mA
Output Voltage
V
IN
=4.0V
0.9
1.2
1.5
1.8
2.1
2.4
-0.1 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
Time t (m s)
Output Voltage V
OUT
(V)
0
50
100
150
Output Current I
OUT
(mA)
Output Current
50mA⇔100mA
Output Voltage
V
IN
=4.0V
RP173x30xx RP173x55xx
2.1
2.4
2.7
3.0
3.3
3.6
-0.1 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
Time t (ms)
Output Voltage V
OUT
(V)
0
50
100
150
Output Current I
OUT
(mA)
Output Current
50mA⇔100mA
Output Voltage
V
IN
=4.0V
4.6
4.9
5.2
5.5
5.8
-0.1 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8
Time t (m s)
Output Voltage V
OUT
(V)
0
50
100
150
Output Current I
OUT
(mA)
Output Current
50mA⇔100mA
Output Voltage
V
IN
=6.5V
RP173x
19
12） Turn on Speed （C1=Ceramic 0.1μF, C2=Ceramic 0.1μF, Topt=25°C）
RP173x12xx RP173x18xx
0.0
0.5
1.0
1.5
-100 -50 0 50 100 150 200 250 300 350 400
Time t (µs)
Output Voltage VOUT (V)
0
2
4
6
CE Input Voltage VCE (V)
Iout=0mA
Iout=1mA
Iout=30mA
Iout=100mA
CE Input Voltage
0V ⇒2.5V
Output Voltage
CE Input Voltage 0V ⇒4.0V
VIN=2.5V (IOUT=0,1,30mA)
VIN=4.0V (IOUT=100mA)
0
0.0
1.0
2.0
-100 -50 0 50 100 150 200 250 300 350 400
Time t (µs)
Output Voltage V
OUT
(V)
0
2
4
6
CE Input Voltage V
CE
(V)
Iout=0mA
Iout=1mA
Iout=30mA
Iout=100mA
CE Input Voltage
0V ⇒2.8V
Output Voltage
CE Input Voltage 0V ⇒4.0V
V
IN
=2.8V (I
OUT
=0,1,30mA)
V
IN
=4.0V (I
OUT
=100mA)
0
RP173x30xx RP173x55xx
0.0
1.0
2.0
3.0
-100 -50 0 50 100 150 200 250 300 350 400
Time t (µs)
Output Voltage V
OUT
(V)
0
2
4
6
CE Input Voltage V
CE
(V)
Iout=0mA
Iout=1mA
Iout=30mA
Iout=100mA
Output Voltage
CE Input Voltage
0V ⇒ 4.0V
V
IN
=4.0V
0
0.0
2.0
4.0
6.0
-100 -50 0 50 100 150 200 250 300 350 400
Time t (µs)
Output Voltage V
OUT
(V)
0
3
5
8
CE Input Voltage V
CE
(V)
Iout=0mA
Iout=1mA
Iout=30mA
Iout=100mA
Output Voltage
CE Input Voltage
0V ⇒6.5V
V
IN
=6.5V
0
13） Turn off Speed with CE pin （C1=Ceramic 0.1μF, C2=Ceramic 0.1μF, Topt=25°C）
RP173x12xx RP173x18xx
0.0
0.5
1.0
1.5
-100 -50 0 50 100 150 200 250 300 350 400
Times t (µs )
Output Voltage V
OUT
(V)
0
2
4
6
CE Input Voltage V
CE
(V)
Iout=0mA
Iout=1mA
Iout=30mA
Iout=100mA
Output Voltage
CE Input Voltage
2.5V ⇒0V
CE Input Voltage
4.0V ⇒0V
V
IN
=2.5V(I
OUT
=0,1,30mA)
V
IN
=4.0V(I
OUT
=100mA)
0
0.0
1.0
2.0
-100 -50 0 50 100 150 200 250 300 350 400
Times t (µs )
Output Voltage V
OUT
(V)
0
2
4
6
CE Input Voltage V
CE
(V)
Iout=0mA
Iout=1mA
Iout=30mA
Iout=100mA
Output Voltage
CE Input Voltage
2.8V ⇒0V
CE Input Voltage
4.0V ⇒0V
V
IN
=2.8V(I
OUT
=0,1,30mA)
V
IN
=4.0V(I
OUT
=100mA)
0
RP173x
20
RP173x30xx RP173x55xx
0.0
1.5
3.0
4.5
-100 -50 0 50 100 150 200 250 300 350 400
Times t (µs)
Output Voltage V
OUT
(V)
0
2
4
6
CE Input Voltage V
CE
(V)
Iout=0mA
Iout=1mA
Iout=30mA
Iout=100mA
CE Input Voltage
4.0V ⇒0V
Output Voltage
V
IN
=4.0V
0
0.0
2.0
4.0
6.0
-100 -50 0 50 100 150 200 250 300 350 400
Times t (µs )
Output Voltage V
OUT
(V)
0.0
2.5
5.0
7.5
CE Input Voltage V
CE
(V)
Iout=0mA
Iout=1mA
Iout=30mA
Iout=100mA
CE Input Voltage
6.5V ⇒0V
Output Voltage
V
IN
=6.5V
0
ESR vs.Output Current
When using these ICs, consider the following points:The relations between IOUT (Output Current) and ESR of
an output capacitor are shown below.The conditions when the white noise level is under 40μV (Avg.) are marked
as the hatched area in the graph.
Measurement Conditions
Frequency Band : 10Hz to 2MHz
Temperature : −40ﾟC to 85ﾟC
C1,C2 :0.1μF
RP173x0121x RP173x301x
0.01
0.1
1
10
100
0 25 50 75 100 125 150
Output Current (mA)
ESR (Ω)
V
IN
=2.5V～7.7V
0.01
0.1
1
10
100
0 25 50 75 100 125 150
Output Current (mA)
ESR (Ω)
V
IN
=3.0V～9.5V
RP173x
21
RP173x551x
0.01
0.1
1
10
100
0 25 50 75 100 125 150
Output Current (mA)
ESR (Ω)
V
IN
=5.5V ～11V
RICOHCOMPANY,LTD.
ElectronicDevicesCompany
●Higashi-ShinagawaOffice(InternationalSales)
3-32-3,Higashi-Shinagawa,Shinagawa-ku,Tokyo140-8655,Japan
Phone:+81-3-5479-2857Fax:+81-3-5479-0502
RICOHEUROPE(NETHERLANDS)B.V.
●SemiconductorSupportCentre
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Phone:+31-20-5474-309Fax:+31-20-5474-791
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Phone:+82-2-2135-5700Fax:+82-2-2135-5705
RICOHELECTRONICDEVICESSHANGHAICo.,Ltd.
Room403,No.2Building,690#BiBoRoad,PuDongNewdistrict,Shanghai201203,
People'sRepublicofChina
Phone:+86-21-5027-3200Fax:+86-21-5027-3299
RICOHCOMPANY,LTD.
ElectronicDevicesCompany
●Taipeioffice
Room109,10F-1,No.51,HengyangRd.,TaipeiCity,Taiwan(R.O.C.)
Phone:+886-2-2313-1621/1622Fax:+886-2-2313-1623
http://www.ricoh.com/LSI/
1.Theproductsandtheproductspecificationsdescribedinthisdocumentaresubjecttochangeor
discontinuationofproductionwithoutnoticeforreasons
suchasimprovement.Therefore,before
decidingtousetheproducts,pleaserefertoRicohsalesrepresentativesforthelatest
informationthereon.
2.Thematerialsinthisdocumentmaynotbecopiedorotherwisereproducedinwholeorinpart
withoutpriorwrittenconsentofRicoh.
3.Pleasebesuretotakeanynecessaryformalitiesunderrelevantlawsorregulationsbefore
exportingorotherwisetakingoutofyourcountrytheproductsorthetechnicalinformation
describedherein.
4.Thetechnicalinformationdescribedinthisdocumentshowstypicalcharacteristicsofand
exampleapplicationcircuitsfortheproducts.Thereleaseofsuchinformationisnottobe
construedasawarrantyoforagrantoflicenseunderRicoh'soranythirdparty'sintellectual
propertyrightsoranyotherrights.
5.
Theproductslistedinthisdocumentareintendedanddesignedforuseasgeneralelectronic
componentsinstandardapplications(officeequipment,telecommunicationequipment,
measuringinstruments,consumerelectronicproducts,amusementequipmentetc.).Those
customersintendingtouse
aproductinanapplicationrequiringextremequalityandreliability,
forexample,inahighlyspecificapplicationwherethefailureormisoperationoftheproduct
couldresultinhumaninjuryordeath(aircraft,spacevehicle,nuclearreactorcontrolsystem,
trafficcontrolsystem,automotiveand
transportationequipment,combustionequipment,safety
devices,lifesupportsystemetc.)shouldfirstcontactus.
6.Wearemakingourcontinuousefforttoimprovethequalityandreliabilityofourproducts,but
semiconductorproductsarelikelytofailwithcertainprobability.Inordertopreventanyinjuryto
personsordamagestopropertyresultingfromsuchfailure,customersshouldbecarefulenough
toincorporatesafetymeasuresintheirdesign,suchasredundancyfeature,firecontainment
featureandfail-safefeature.Wedonotassumeanyliability
orresponsibilityforanylossor
damagearisingfrommisuseorinappropriateuseoftheproducts.
7.Anti-radiationdesignisnotimplementedintheproductsdescribedinthisdocument.
8.
PleasecontactRicohsalesrepresentativesshouldyouhaveanyquestionsorcomments
concerningtheproductsorthetechnicalinformation.
RICOHCOMPANY.,LTD.ElectronicDevicesCompany
■
Ricoh presented with the Japan Management Quality Award for 1999
.
Ricoh continually strives to promote customer satisfaction, and shares the achievements
of its management quality improvement program with people and society.
■Ricoh awarded ISO 14001 certification.
The Ricoh Group was awarded ISO 14001 certification, which is an international standard for
environmental management systems, at both its domestic and overseas production facilities.
Our current aim is to obtain ISO 14001 certification for all of our business offices.
Ricoh completed the organization of the Lead-free production for all of our products.
After Apr. 1, 2006, we will ship out the lead free products only. Thus, all products that
will be shipped from now on comply with RoHS Directive.