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

3.0V-5.5V Input

0.8V-3.3V/12A Output

Control Specifications

Parameter

Min

Typ

Max

Notes

Remote On/Off

Signal Low (Unit Off)

-0.3V

-

0.8V

Signal High (Unit On)

2.4V

-

Vin,max

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.

187

.

10

9

.

0

0

.

2

−

−

=

adj

TrimDown

V

R

187

.

0

9

.

0

0

.

7

−

−

=

adj

TrimUp

V

R

Thermal Derating Curves

S7AH-12F330

V7AH-12F330

S7AH-12F250

V7AH-12F250

Trim_do

Trim_up