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

Mar. 19, 2010

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

Output Specifications (continued)

Parameter

Min

Typ

Max

Notes

Short Circuit Surge Transient

-

-

2 A

Ripple and Noise (pk-pk)

-

25 mV

50 mV

Ripple and Noise (rms)

-

8 mV

15 mV

Tested with 0-20MHz,

10uF/16V tantalum capacitor &

1uF/10V TDK ceramic

capacitor at the output

Turn on Time

-

4 mS

8 mS

Overshoot at Turn on

-

0%Vo,set

3%Vo,set

Output Capacitance

ESR

≥ 1mohm

ESR

≥ 10mohm

0 uF

0 uF

-

-

1000 uF

4700 uF

Transient Response

50% ~ 100% Max Load

-

200 mV

-

Settling Time

-

25 uS

-

100% ~ 50% Max Load

-

200 mV

-

Settling Time

All

-

25 uS

-

di/dt=2.5 A/uS; Vin=5 V; and

with 10 uF/16 V tantalum

capacitor & 1uF/10V ceramic

capacitor at the output

50% ~ 100% Max Load

-

120 mV

-

Settling Time

-

50 uS

-

100% ~ 50% Max Load

-

120 mV

-

Settling Time

All

-

50 uS

-

di/dt=2.5 A/uS; Vin=5 V; and

with two 150 uF/10 V tantalum

capacitors & 1 uF/10 V ceramic

capacitor at the output

Note

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