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

2

NON-ISOLATED DC/DC CONVERTERS

4.5 Vdc - 14 Vdc Input, 0.69 Vdc - 5.5 Vdc /20 A Outputs

December 10, 2010

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

Absolute Maximum Ratings

Parameter

Min

Typ

Max

Unit

Notes

Continuous Input Voltage

-0.3

-

15

V

Voltage on SEQ terminal

-0.3

-

V

Voltage on SYNC terminal

-0.3

-

12

V

Voltage on PG terminal

-0.3

-

6

V

Operating Ambient Temperature

-40

-

85

°C

Storage Temperature

-55

-

125

°C

Note: Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These

are absolute stress ratings only, functional operation of the device is not implied at these or any other

conditions in excess of those given in the operations sections of the data sheet. Exposure to absolute

maximum ratings for extended periods can adversely affect the device reliability.

Input Specifications

Parameter

Min

Typ

Max

Unit

Notes

Operating Input Voltage

4.5

-

14

V

Input Current (full load)

-

-

20

A

-

42

-

mA

Input Current (no load)

-

74

-

mA

Input Stand-by Current

-

3

-

mA

Input Reflected Ripple Current

(pk-pk)

-

43

-

mA

I

-

-

1

A

Input Ripple Rejection (120Hz)

-

45

-

dB

Turn-on Threshold

-

4.45

-

V

Turn-off Threshold

-

4.2

-

V

Hysteresis

-

0.25

-

V

CAUTION: This converter is not internally fused. An input line fuse must be used in application.

This power module can be used in a wide variety of applications, ranging from simple standalone operation to

an integrated part of sophisticated power architecture. To preserve maximum flexibility, internal fusing is not

included; however, to achieve maximum safety and system protection, always use an input line fuse. The safety

agencies require a fast-acting fuse with a maximum rating of 20A. Based on the information provided in this

data sheet on inrush energy and maximum dc input current, the same type of fuse with a lower rating can be

used. Refer to the fuse manufacturer’s data sheet for further information.

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

temperature conditions.