Bel Fuse Inc.

206 Van Vorst Street, Jersey City, NJ 07302

• Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com

NON-ISOLATED DC/DC CONVERTERS

3.3 Vdc Input

0.9 Vdc - 2.5 Vdc/3 A Output

•

Non-Isolated

• OCP/SCP

•

High Efficiency

• Wide Range Trim

•

Low Cost

•

Remote On/Off

•

Excellent Thermal Performance

•

Industrial Temperature Range

•

Input Under Voltage Lockout

•

UL60950-1 Recognized (UL/cUL)

Description

The Bel xRAH-03C1A0 modules are a series of non-isolated, step down dc/dc converters that operate from a

nominal 3.3 Vdc source. These converters are available in a range of output voltages from 0.9 Vdc to 2.5 Vdc. It

is packaged in a compact, overmolded package rated at 3 A. Optional lead forming provides a vertical mount

product for minimal footprint or a surface mount option for a very low profile. The output is closely regulated and

the efficiency for 2.5 Vdc output is typically 93% at full load. Typical features include remote on/off, input under

voltage lockout, over current protection and short circuit protection.

Part Selection

Output Voltage

Input

Voltage

Max. Output

Current

Max. Output

Power

Typical

Efficiency

Part Number

Surface Mount

Part Number

Vertical Mount

0.9 Vdc - 2.5 Vdc

3.3 Vdc

3 A

7.5 W

93%

SRAH-03C1A0

VRAH-03C1A0

2.5 Vdc

3.3 Vdc

3 A

7.5 W

93%

SRAH-03C250

VRAH-03C250

1.8 Vdc

3.3 Vdc

3 A

5.4 W

89%

SRAH-03C180

VRAH-03C180

1.5 Vdc

3.3 Vdc

3 A

4.5 W

87%

SRAH-03C150

VRAH-03C150

1.2 Vdc

3.3 Vdc

3 A

3.6 W

84%

SRAH-03C120

VRAH-03C120

0.9 Vdc

3.3 Vdc

3 A

2.7 W

81%

SRAH-03C090

VRAH-03C090

Notes:

1. Add “0” suffix at the end of the model number to indicate “Tube Packaging”, and “R” for “Reel

Packaging”, and “G” for “Tray Packaging”.

2. All part numbers above indicate RoHS 6. Change the second letter "R" to "7" for RoHS 5 part numbers.

Absolute Maximum Ratings

Parameter

Min

Typ

Max

Notes

Input Voltage (continuous)

-0.3 V

-

6 V

Output Enable Terminal Voltage

-0.3 V

-

6 V

Ambient Temperature

-40

°C

-

85

°C

Storage Temperature

-55

°C

-

125

°C

Input Specifications

Parameter

Min

Typ

Max

Notes

Input Voltage

3 V

-

3.6 V

Input Current (no load)

-

-

110mA

Input Current (full load)

-

-

-

-

-

-

-

-

-

-

3.1 A

2.3 A

1.9 A

1.6 A

1.2 A

Remote Off Input Current

-

7 mA

14 mA

xRAH-03C Series

RoHS Compliant

Rev.A