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

2.5V Input

0.9V-1.65V/10A Output

General Specifications

Parameter

Min

Typ

Max

Notes

Efficiency

85%

83%

79%

88%

86%

82%

-

-

-

Measured at Vin=2.5V, full load and

Ta=25

°C.

Switching Frequency

250KHz

300KHz

350KHz

Output Trim Range

90%Vo

-

110%Vo

MTBF

4,447,157 hours

°C)

Dimensions (surface mount)

Inches (L × W × H)

Millimeters (L × W × H)

0.78 x 0.70 x 0.32

19.81 x 17.78 x 8.13

Dimensions (vertical)

Inches (L × W × H)

Millimeters (L × W × H)

0.70 x 0.308 x 0.65

17.78 x 7.82 x 16.51

Weight

-

4.7g

-

Control Specifications

Parameter

Min

Typ

Max

Notes

Remote On/Off

Signal Low (Unit Off)

0V

-

0.5V

Signal High (Unit On)

2V

-

5.5V

Remote on/off pin open, the module is 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

1.5V

49.788

287.900

43.330

226.000

1.2V

31.241

223.900

43.330

162.000

1.0V

11.029

92.800

25.550

56.200

Module

Vout

Trim

GND

Rtrimdown

Module

Vout

Trim

GND

Rtrimup