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

5 Vdc - 13.8 Vdc Input

0.6 Vdc - 5.0 Vdc/50 A Output

Jan. 21, 2010

Bel Power Inc., a subsidiary of Bel Fuse Inc.

Absolute Maximum Ratings

Parameter

Min

Typ

Max

Notes

Input Voltage (continuous)

-0.3 V

-

15 V

Output Enable Terminal Voltage

-0.3 V

-

15 V

Ambient Temperature

0

C

-

70

C

Storage Temperature

-55

C

-

125

C

Input Specifications

Parameter

Min

Typ

Max

Notes

Input Voltage

Vo≤ 2.8 V

Vo > 2.8 V

5 V

1.8*Vo

12 V

12 V

13.8 V

13.8 V

Input Current (full load)

-

-

38 A

Input Reflected Ripple Current (pk-pk)

-

35 mA

-

Input Reflected Ripple Current (rms)

-

10 mA

-

With simulated source impedance of

1 uH, 5 Hz to 20 MHz. Use a 1000

uF/16 V electrolytic capacitor with

ESR=0.1 ohm max, at 100 kHz at

25°C.

I

-

-

1 A

Turn-on Voltage Threshold

4.4 V

4.6 V

4.8 V

Under Voltage Threshold

4.0 V

4.3 V

4.6 V

Note

Output Specifications

Parameter

Min

Typ

Max

Notes

Output Voltage Set Point Accuracy

Vo≥1 V

Vo＜1 V

-1.5 % Vo

-10 mV

-

-

+1.5 % Vo

+10 mV

Vin=Vinmin, Io=Iomax

Load Regulation

Vo≥2.5 V

Vo＜2.5 V

-

-

-

-

0.6% Vo

12 mV

Line Regulation

Vo≥2.5 V

Vo＜2.5 V

-

-

-

-

0.3% Vo

9 mV

Regulation Over Temperature

(0

C to +70 C)

-

-

0.02% Vo/C

Output Current

0 A

-

50 A

Current Limit Threshold

105% Io

130% Io

180% Io

Output Ripple and Noise (pk-pk)

Vo=5.0 V

Vo=3.3 V

Vo=2.5 V

Vo=1.5 V

Vo=1.0 V

Vo=0.6 V

-

-

-

-

-

-

-

-

-

-

-

-

110 mV

100 mV

100 mV

80 mV

60 mV

60 mV

Test conditions:

0-20MHz BW, with a 1µF

ceramic capacitor and a 10 uF

Tantalum cap at output.