SC125A11-2000-24 - Semiconductor Circuits, Inc.

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DP Series

All specifications are typical at nominal line and full load at 25°C unless

otherwise noted and are subject to change without notice.

125 Watts

Single Outputs



 Wide input range

18-36 Vdc

36-76 Vdc



 Remote shutdown



 Open frame 1/2 brick



 2800 Vdc I/O isolation



 Remote Sense



 Industry Standard footprint

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 Efficiencies >93%



 UL1950 Recognition

(Pending)

The SC125A Series operate over

a wide input range of 36-76

Vdc. Efficiencies greater than

93% over the entire input range are

typical. Additional features include

higher ambient operating temperatures,

reduced airflow requirements, excellent

regulation and transient response

characteristics. Single board package

with industry standard footprint. De-

signed for through hole mounting.

Applications

These units are ideally suited for

telecommunications mobile/optical

switches, high capacity network routers,

systems requiring distributed power

architecture and high isolation.

SC125A Series

INPUT

Voltage Range 18-36 Vdc

36-76 Vdc

Filtering All Models

Reverse Polarity Protected To Nominal Input Current

External Fuse Required

Remote On/Off Control All Models

OUTPUT

Voltage Tolerance ± 1%

± 1.5% (3.3 Vdc)

Ripple and Noise 100mV pk-pk (20 MHz BW)

Short Circuit Protection Continuous Power Cycle

Temperature Coefficient 0.02% / °C

GENERAL

Regulation:

Line 0.20%

Load 0.50%

Efficiency 94% (typ)

I/O Isolation 2800 Vdc

Switching Frequency 200khz (typ)

ENVIRONMENTAL

Operating Temperature Fully specified from -40°C

to +60°C

Max hotspot temp range -40°C to +110°C

Storage Temperature -55°C to +105°C

ThetaHS-A 12.8°C/W

28 14C Industrial Way Atkinson, NH 03811 (603) 893-2330 FAX (603) 893-6280

SC125A Series Ordering Information

Dimensions and Connections

Input Voltage Output Output Model

Range Voltage Current Number

18-36 Vdc 3.3 Vdc 25.0 A SC125A17-2500-24

18-36 Vdc 5 Vdc 20.0 A SC125A11-2000-24

18-36 Vdc 12 Vdc 10.0 A SC125A12-1000-24

36-76 Vdc 3.3 Vdc 30.0 A SC125A17-3000-48

36-76 Vdc 5 Vdc 25.0 A SC125A11-2500-48

36-76 Vdc 12 Vdc 10.0 A SC125A12-1000-48

PIN CONNECTIONS

1. INPUT COMMON

2. NO PIN

3. REMOTE ON/OFF

4. + INPUT

5. + OUTPUT

6. + SENSE

7. TRIM

8. - SENSE

9. OUTPUT COMMON

NOTES:

1. Ripple measured with a 3.3 µF tantalum

capacitor across each output.

2. External Output Trimming: Output may be

externally trimmed ±10%

3. Remote ON/Off Control (pin3) common

referenced to Minus Input (pin 1).

On greater than 4.5 Vdc or open circuit

Off less than 0.4 Vdc

06/30/2005

PIN DIAMETERS

PINS 1-4, 6-8 0.040 ±0.002

PINS 5, 9 0.080 ±0.002