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

4.5V-13.2V Input

1.0V-5.0V/6A Output

Control Specifications

Parameter

Min

Typ

Max

Notes

Remote On/Off

Signal Low (Unit Off)

-0.3V

-

1.25V

Signal High (Unit On)

3.5V

-

6.5V

Remote on/off pin open, unit on.

Output Trim Equations

Equations for calculating the trim resistor (in kΩ) given the desired adjusted voltage (Vadj) and the nominal

output voltage of the converter (Vnom) are shown below. The Trim Down resistor should be connected between

the Trim pin and Vout. The Trim Up resistor should be connected between the Trim pin and Ground. Only one of

the resistors should be used for any given application.

B

V

V

A

R

adj

nom

down

trim

−

−

=

−

D

V

V

C

R

nom

adj

up

trim

−

−

=

−

Vnom

A

B

C

D

5.0

272.745

133.400

37.140

71.500

3.3

167.607

152.800

37.140

90.900

2.5

117.622

152.800

37.140

90.900

1.8

74.394

152.800

37.140

90.900

1.5

329.981

1365.000

219.000

1000.000

1.2

219.000

666.000

219.000

301.000

1.0

100.252

898.000

149.400

649.000

Vout

Trim

GND

Rtrim-down

Module

Vout

Trim

GND

Rtrim-up

Module