Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302

4

NON-ISOLATED DC/DC CONVERTERS

2.4 Vdc - 5.5 Vdc Input, 0.6 Vdc - 3.63 Vdc /20 A Output

December 2, 2010

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

General Specifications

Parameter

Min

Typ

Max

Unit

Notes

Efficiency

Vo=0.6V

Vo=1.2V

Vo=1.8V

Vo=2.5V

Vo=3.3V

-

-

-

-

-

70.0

81.9

87.3

90.8

92.9

-

-

-

-

-

%

%

%

%

%

Vin= 3.3Vdc, Ta=25°C

Io=Io, max , Vo= Vo,set

Vin=5.0V, when Vo=3.3V

Switching Frequency

-

600

-

kHz

Over Temperature Protection

-

144

-

°C

Sequencing Delay time

10

-

-

mS

voltage on SEQ pin

Tracking Accuracy

Power-Up: 2V/ms

Power-Down: 2V/ms

-

-

-

-

100

100

mV

mV

VSEQ < Vo

Weight

-

6.03

-

g

MTBF

7,868,128

hours

Calculated MTBF (Vin=5V,

Io=80% full load, Ta=40°C)

Telcordia Issue 2, Method I Case

3

Dimensions

Inches (L × W × H)

Millimeters (L × W × H)

1.30 x 0.53 x 0.334

33.02 x 13.46 x 8.50

-

Note: Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and

temperature conditions.