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

0.9V-5.0V/3A Output

Control Specifications

Parameter

Min

Typ

Max

Notes

Remote On/Off

Signal Low (Unit On)

-0.3V

-

1V

Signal High (Unit Off)

2.8V

-

13.2V

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

TrimDown

−

−

=

D

V

V

C

R

nom

adj

TrimUp

−

−

=

Vnom

A

B

C

D

5.0

61.940

29.400

11.760

14.700

3.3

53.840

61.700

17.200

40.200

2.5

9.596

15.620

4.496

10.000

1.8

3.850

13.830

3.064

10.000

1.5

3.120

14.420

3.536

10.000

1.2

1.790

10.910

3.536

6.490

1.0

0.511

3.490

1.992

1.000

0.9

X

X

0.960

0.100

Module

Vout

Trim

GND

Rtrimdown

Module

Vout

Trim

GND

Rtrimup