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

3.0 Vdc - 3.6 Vdc Input

5.0 Vdc/1.5 A Output

•

Non-Isolated

•

High Efficiency

•

Fixed Frequency (550 kHz)

•

Low Profile Package

•

Trim Function (Option)

•

Allows Burst Mode Operation at

Low Load Currents for xRAH-

02C500, Burst Mode Operation

Disabled for Lower Output Ripple

at Light Loads for xRAH-02C50B

•

UL60950 Recognized (UL/cUL)

Description

The Bel xRAH-02C50x is a part of the low cost non-isolated dc/dc converter series. The modules use a SMD or

SIP package for ease of layout and space savings. The output is closely regulated and the efficiency is typically

87% at full load.

Part Selection

Output

Voltage

Input Voltage

Max. Output

Current

Max. Output

Power

Typical

Efficiency

Part Number

Surface Mount

Part Number

Vertical Mount

5.0 Vdc

3.0 Vdc - 3.6 Vdc

1.5 A

7.5 W

87%

SRAH-02C50x

VRAH-02C50x

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. Replace “x” with “0” to allow burst mode operation at low load currents, or with “B” to disable burst

mode operation at light loads.

Absolute Maximum Ratings

Parameter

Min

Typ

Max

Notes

Input Voltage (continuous)

2.8 V

-

4.0 V

Ambient Temperature

-40

°C

-

85

°C

Storage Temperature

-40

°C

-

125

°C

Input Specifications

Parameter

Min

Typ

Max

Notes

Input Voltage

3.0 V

-

3.6 V

Input Current

-

-

3.3 A

Input Reflected Ripple Current

(rms)

-

30 mA

60 mA

Input Reflected Ripple Current

(pk-pk)

-

100 mA

150 mA

With simulated source impedance

of 500 nH, 5 Hz to 20 MHz; Use

one 270 uF/16 V capacitor with

ESR = 0.018 ohm max. at 100 kHz

I

-

0.02 A

0.05 A

Turn-on Voltage Threshold

-

2.8 V

2.9 V

xRAH-02C50x

RoHS Compliant