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

4.5 Vdc -14 Vdc Input

0.75 Vdc - 5.0 Vdc/6 A Output

Input Specifications

Parameter

Min

Typ

Max

Notes

Input Voltage

Vo, set≤3.3 V

Vo, set=5.0 V

4.5 V

7.0 V

12 V

12 V

14 V

14 V

Input Current (full load)

Vo=5.0 V

Vo=3.3 V

Vo=1.8 V

Vo=0.75 V

-

-

-

-

2.75 A

1.85 A

1.05 A

0.55 A

4.8 A

4.8 A

3.2 A

1.8 A

Input Current (no load)

Vo=5.0 V

Vo=0.75 V

-

-

-

-

100 mA

20 mA

Remote Off Input Current

-

3 mA

5 mA

Input Reflected Ripple Current (pk-pk)

-

120 mA

200 mA

Input Reflected Ripple Current (rms)

-

60 mA

100 mA

With simulated source impedance of 1

uH, 5 Hz to 20 MHz and two 100 uF/25

V external input tantalum capacitors.

I

-

0.002 A

Turn-on Voltage Threshold

Vo, set≤3.3 V

Vo, set=5.0 V

-

-

4.3 V

6.0 V

4.5 V

6.5 V

Turn-off Voltage Threshold

Vo, set≤3.3 V

Vo, set=5.0 V

-

-

4.0 V

5.5 V

4.3 V

6.0 V

Shut down or below 90% set point.

Output Specifications

Parameter

Min

Typ

Max

Notes

Output Voltage Set Point

-2%Vo,set

-

2%Vo,set

Vin=12 V, full load

Output Voltage Set Point

1

-2.5%Vo,set

-

3.5%Vo,set

Load Regulation

-0.7%Vo,set

0.4%Vo,set

0.7%Vo,set

Io=Io, min to Io, max

Line Regulation

-0.7%Vo,set

0.3%Vo,set

0.7%Vo,set

Vin=Vin, min to Vin, max

Regulation Over Temperature

(-40

°C to +85 °C)

-

0.5%Vo,set

-

Tref=Ta, min to Ta, max

Output Current

0 A

-

6 A

Current Limit Threshold

6.8 A

-

15 A

Short Circuit Surge Transient

-

0.25 A

-

Ripple and Noise (pk-pk)

Vo=5.0 V

Vo=3.3 V

Vo=0.75 V

-

-

-

100 mV

80 mV

35 mV

140 mV

120 mV

7 0 mV

Ripple and Noise (rms)

Vo=5.0 V

Vo=3.3 V

Vo=0.75 V

-

-

-

35 mV

25 mV

10 mV

50 mV

40 mV

15 mV

Tested with 0-20 MHz, with

10 uF/10 V tantalum

capacitor & 1 uF/10 V

ceramic capacitor at the

output

Turn on Time

-

6 mS

12 mS

Overshoot at Turn on

-

0%

3%

Output Capacitance

ESR

≥ 1mohm

ESR

≥ 10mohm

0 uF

0 uF

-

-

1000 uF

2200 uF

Transient Response

50% ~ 100% Max Load

-

200 mV

350 mV

Settling Time

-

25 uS

50 uS

100% ~ 50% Max Load

-

200 mV

350 mV

Settling Time

All outputs

-

25 uS

50 uS

di/dt=2.5 A/uS; Vin=12 V; and

with 10 uF/10 V tantalum

capacitor & 1uF/10 V ceramic

capacitor at the output.

Notes

1. Over all operating input voltages, resistive loads and temperature conditions.