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

Input Specifications

Parameter

Min

Typ

Max

Notes

Input Voltage

2.4 V

-

5.5 V

Vo, set

Input Current (full load)

Vo=3.3 V

Vo=2.5 V

Vo=1.8 V

Vo=1.5 V

Vo=1.2 V

Vo=0.75 V

-

-

-

-

-

-

7.0 A

5.5 A

4.0 A

3.5 A

3.0 A

2.0 A

8.0 A

9.5 A

9.0 A

7.5 A

6.0 A

4.0 A

Input Current (no load)

-

80 mA

-

Remote Off Input Current

-

15 mA

-

Input Reflected Ripple Current (pk-pk)

-

140 mA

-

Input Reflected Ripple Current (rms)

-

40 mA

-

Tested with two 100 uF/10 V tantalum

input capacitors & simulated source

impedance of 1uH, 5 Hz to 20 MHz.

I

-

-

0.2 A

Turn-on Voltage Threshold

-

2.2 V

-

Turn-off Voltage Threshold

-

2.0 V

-

Note

Output Specifications

Parameter

Min

Typ

Max

Notes

Output Voltage Set Point

-2% Vo,set

-

2% Vo,set

Vin=5 V, lo=lomax full load

Output Voltage Set Point

-3% Vo,set

-

3% Vo,set

Over all operating input

voltages, resistive loads and

temperature conditions

Load Regulation

-

0.4% Vo,set

-

Io=Iomin to Iomax

Line Regulation

-

0.3% Vo,set

-

Vin=Vinmin to Vinmax

Regulation Over Temperature

(-40

°C to +85 °C)

-

0.5% Vo,set

-

Tref=Tamin to Tamax

Output Current

0 A

-

10 A

Current Limit Threshold

15 A

-

27 A

Short Circuit Surge Transient

-

-

1.5 A

Ripple and Noise (pk-pk)

-

25 mV

50 mV

Ripple and Noise (rms)

-

8 mV

15 mV

Tested with 0-20 MHz, 10 uF/

16 V tantalum capacitor &

1 uF/10 V 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

≥ 1m ohm

ESR

≥ 10m ohm

0 uF

0 uF

-

-

1000 uF

4700 uF

Transient Response

50% ~ 100% Max Load

-

130 mV

-

Settling Time

-

50 uS

-

100% ~ 50% Max Load

-

150 mV

-

Settling Time

-

50 uS

-

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

with two 150 uF/16 V tantalum

capacitors & 1 uF/10 V ceramic

capacitor at the output