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

2.4 Vdc - 5.5 Vdc Input

0.75 Vdc - 3.63 Vdc/10 A Output

General Specifications

Parameter

Min

Typ

Max

Notes

Efficiency

Vo=3.3 V

Vo=1.8 V

Vo=0.75 V

91%

86%

77%

94%

89%

80%

-

-

-

Measured at Vin=5 V, full load (current

source)

Switching Frequency

250 kHz

300 kHz

350 kHz

Over Temperature Shutdown

-

125

°C

-

Output Trim Range (Wide Trim)

0.7525 V

-

3.63 V

Remote Sense Compensation

-

-

10%

Total adjustment of trim, setpoint and

remote sense combined should not

exceed 3.63 V. Vo=0.7525 V when trim

pin open

MTBF

6,900,000 hours

°C)

Dimensions

Inches (L × W × H)

Millimeters (L × W × H)

2.0 x 0.5 x 0.36

50.8 x 12.7 x 9.2

Weight

-

8.3g

-

Note

Control Specifications

Parameter

Min

Typ

Max

Notes

Signal Low (Unit Off)

-0.3 V

-

0.3 V

Signal High (Unit On)

1.5 V

-

5.8 V

VRBC-10F2A0; Remote On/Off pin open, Unit

on.

Signal Low (Unit On)

-0.3 V

-

0.3 V

Signal High (Unit Off)

1.5 V

-

5.8 V

VRBC-10F2AL; Remote On/Off pin open, Unit

on.

Sequencing Voltage

0.05 V

-

Vin

Sequencing Voltage applied on SEQ should

be higher than output voltage.

Sequencing Slew Rate Capability

-

-

2 V/mS

Sequencing Delay Time

10 mS

-

-

SEQ pin

Tracking Accuracy

Power-Up

Power-Down

-

-

100mV

200mV

200mV

400mV

Output Trim Equations

Equation for calculating the trim resistor (in kΩ) given the desired adjusted voltage (Vadj) is shown below. The

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

11

.

5

7525

.

0

07

.

21

−

−

=

adj

trim

V

R

Equation for calculating the trim voltage (in V) given the desired adjusted voltage (Vadj) is shown below. The

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

)

7525

.

0

(

1698

.

0

7

.

0

−

×

−

=

adj

rim

V

V

Rtrim

Module

Vout

GND

Trim

Vtrim

Module

Vout

GND

Trim