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

6 Vdc - 14 Vdc Input

0.8 Vdc - 3.63 Vdc/25 A or 30 A Output

Mar. 19, 2010

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

General Specifications

Parameter

Min

Typ

Max

Notes

Efficiency

Vo=3.3 V

Vo=1.8 V

Vo=0.8 V

-

-

-

92%

87%

77%

-

-

-

Measured at Vin=12 V, full load

Switching Frequency

-

300 kHz

-

Over Temperature Shutdown

-

125

°C

-

Output Trim Range (Wide Trim)

0.8 V

-

3.63 V

Remote Sense Compensation

-

-

0.5 V

MTBF

3,289,732 hours

Iomax; Vo=3.3 V; Vin=12 V; 200LFM forced

°C)

Dimensions

Inches (L × W × H)

Millimeters (L × W × H)

1.3 x 0.53 x 0.358

33 x 13.5 x 9.10

Weight

-

6.5 g

-

Note

Control Specifications

Parameter

Min

Typ

Max

Notes

Remote On/Off

Signal Low (Unit On)

-0.3 V

-

1.2 V

Signal High (Unit Off)

3 V

-

Vin, max

When Enable pin floating ,the unit is on.

Voltage Sequencing

Sequencing Delay Time

10 mS

-

-

Delay from Vin min to application of voltage on

SEQ pin

Sequencing Slew Rate Capability

-

-

2 V/mS

Tracking Accuracy

Power-Up

Power-Down

-

-

100 mV

200 mV

200 mV

400 mV

Vin min to Vin max; Io min to Io max; Vseq<Vo

Forced Load Share Accuracy

-

10% Io

-

Number of Units in Parallel

-

-

5

Output Trim Equations

Equation for calculating the trim resistor (in Ω) given the desired output voltage (Vo) is shown below. The Trim

Up resistor should be connected between the Trim pin and Ground.

Rtrim

Module

Vout

GND

Sense

trim

⎥⎦

⎤

⎢⎣

⎡

−

−

=

100

8

.

0

1200

Vo