SUPERSIP26 11/99 REV C Page 1
Product Data Sheet
5 VDC INPUT, 3.3 VDC OUTPUT
DC/DC CONVERTER
SS26 (SuperSIPSS26 (SuperSIP
SS26 (SuperSIPSS26 (SuperSIP
SS26 (SuperSIPTT
TT
TMM
MM
M))
))
)
Features
●Non isolated DC/DC Converter designed to
operate from a regulated 5V bus
●Output voltage Range: 1.8V - 3.6V
●Easy resistive programming for desired output
●No resistive programming gives 3.3 Vdc output
●Wave solderable
Description
The SS26 (SuperSIPTM) DC/DC converter accepts a
regulated 5V input (±10%) and provides 1.8Vdc to 3.6Vdc
at 6A. The circuit is optimized for high efficiency and fast
load transient response needed by telecom, DSP, and
microprocessor applications. Advanced thermal design,
monolithic power circuitry, planar magnetics, and
synchronous rectification result in outstanding
performance and value. Pins are staked for wave
solderability. Multiple programming, power good and on/
off options allow superior flexibility and drop in compatibility
for most existing designs.
Internet: http://www.cdpowerelectronics.com
Power Electronics Division, United States
3400 E Britannia Drive, Tucson, Arizona 85706
Phone: 520.295.4100 Fax: 520.770.9369
Power Electronics Division, Europe
C&D Technologies (Power Electronics) Ltd.
132 Shannon Industrial Estate, Shannon, Co. Clare, Ireland
Tel: +353.61.474.133 Fax:+353.61.474.141
More product information and application notes are available
on our website at www.cdpowerelectronics.com
SUPERSIP26 11/99 REV CPage 2
Electrical Specifications
Unless otherwise specified, operating conditions are as follows: Vin=5V, Vo=3.3V, Io=6A, TA=25°C, Cin=100µF, C o=0F.
Notes
1. Input source<3” from SuperSIP™, Load transient <3A per SIP. 100µF low ESR capacitor for load transients
>3A.
2. Optional programming 1.8 - 3.6 or +10% available. See Table.
3. 100 lfm air, Vo=3.3V, Io=6A. See Thermal Design Guide for other conditions.
Parameters Conditions Min. Typ. Max. Units
Input
Input Voltage Vin 4.5 5.0 5.5 VDC
Input Current Ripple 200 mARMS
Required Capacitance Cin
Note 1
0 100 µF
Output
Output Voltage VoNominal 3.25 3.3 3.35 VDC
Output Program Range
Note 2
1.8 3.6 VDC
Output Current IoTA=25°C 0 6 Amps
Output Ripple 20 Mhz BW 15 50 mVp-p
Output Rise time T 700 µS
Output Capacitance Range Co 0 5000 µF
Line Regulation ±0.5 %
Load Regulation Io min-Io max ±1.0 %
Temperature Coefficient Tc 0.01 %/°C
Combined variation Vin min-max
Io min-max
TA=25C°-85C° -2 +2 %
Current Limit Ilimit Vin = 4.75Vdc 6.5 9 12 A
General
Switching Frequency 800 kHz
Dynamic Response
∆IO/∆t = 1A/10!sec, Vi = 5.0V, TA = 25°C
Load Change from IO = 0% to IO = 100%
Peak Deviation 30 mV
Settling time (VO<10% Peak Deviation) 100 µsec
Load change from IO = 100% to IO = 0%
Peak Deviation 30 mV
Settling time (VO<10% Peak Deviation) 100 µsec
Temperature
Operating Temperature
Note 3
0 +60 °C
Storage Temperature -40 +125 °C
SUPERSIP26 11/99 REV C Page 3
Thermal Design Guide
Locate your operating current, read the junction temp
rise from the graph and add to your maximum ambient.
135°C is the maximum allowable operating junction tem-
perature. Test conditions: Device soldered into 4” x 4”
PCB, 2 sided with power and ground planes for heat con-
duction. Due to the difficulty in predicting the thermal
effects of airflow velocity and direction, and thermal con-
duction through ground planes it is important that the SS26
SuperSIPTM be evaluated thermally in each application.
For high ambient temperature/high current application
please request our Application Note 35-118-01, “Accurate
Measurements of SS26 SuperSIPTM Junction Tempera-
ture”, for further assistance.
Programming
To program the SS26 SuperSIPTM for Vout<3.3, connect
resistor across pins 8 (TRIM) and 1(Vo). For Vout>3.3, re-
sistor is connected across pins 8 and 4 (Gnd).
Tj Rise vs. Io
(Junction T emp Rise vs. Output Current)
EFFICIENCY %
OUTPUT CURRENT AMPS
Vo=3.3V, Cout-Oµf, Vi=5V, Cin=100µf
Efficiency
100
95
90
85
80
75
0.5 1.5 2.5 3.5 4.5 5.5
T emp Rise C
OUTPUT CURRENT - AMPS
70
60
50
40
30
20
10
0
0.5
1
1.5
2
2.5
3
3.5
4
4.5
5
5.5
6
STILL
AIR
100LFM
300LFM
3.3V 25C
2.1V 25C
Table 2
Vout Resistor Value Vout Resistor Value
1.8 576Ω2.8 18.2k
1.9 1.21k 2.9 24.3k
2.0 1.96k 3.0 34.8k
2.1 2.8k 3.1 54.9k
2.2 3.83k 3.2 110.0k
2.3 4.99k 3.3 OPEN
2.4 6.49k 3.4 66.5k
2.5 8.25k 3.5 29.4k
2.6 10.7k 3.6 18.2k
2.7 13.7k
Transient Response
Operating conditions are as follows: Vin=5V, Vo=3.3V, Load
change from Io=0% to Io=100%, TA=25°C, Cin=0F, Co=µF.
Operating conditions are as follows: Vin=5V, Vo=3.3V, Load
change from Io=100% to Io=0%, TA=25°C, Cin=0F, Co=µF.
SUPERSIP26 11/99 REV CPage 4
Ordering Information
Typical examples:
Pin Out
Pin Function Description
1VoOutput Voltage
2VoOutput Voltage
3VoOutput Voltage
4 GND Ground
5 GND Ground
6VIN Input Voltage
7VIN Input Voltage
7A Pgood Power Good Option
8 Trim Output Voltage Adjust
9 Enable Enable Option
The information provided herein is believed to be reliable; however, C&D TECHNOLOGIES assumes no responsibility for inaccuracies or omissions. C&D TECHNOLOGIES
assumes no responsibility for the use of this information, and all use of such information shall be entirely at the user’s own risk. Prices and specifications are subject to change
without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. C&D TECHNOLOGIES does not authorize or warrant
any C&D TECHNOLOGIES product for use in life support devices/systems or in aircraft control applications.
Power Good Enable Programming (See Table 2)
A = Pin 7A installed for Power A = logic1 or open = ON A = Standard 3.3V with Pin 8 open
Good option logic 0 or gnd = OFF or program per Table 2.
B = Pin omitted (industry standard) B = logic 0 or gnd = ON
logic 1 = OFF
Mechanical
TOLERANCES
+.008” for 3 place decimals
+ .02” for 2 place decimals
+ .002” for pin diameter
.14 (3.56)
0.28 (7.2)
1 2 3 4
2.50 (63.5)
1.900 (48.26)
.200 (5.08) 0.025 (64)
SQUARE TIP
OPTIONAL
0.100 (2.54)
0.55 (14.0)
0.14
(3.56)
0.30
(7.62)
.16 (4.06)
5 6 7 7A 8 9
SS 26 - A - A - A Standard configuration 5V to 3.3V
with 1.8V-3.6V trim range
SS 26 - B - A - A
