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 CONVERTER

12 Vdc Input

1.2 Vdc - 5.0 Vdc/15 A Output

Input Specifications (continued)

Parameter

Min

Typ

Max

Notes

Remote Off Input Current

-

25 mA

30 mA

Input Reflected Ripple Current (pk-pk)

-

-

330 mA

Input Reflected Ripple Current (rms)

-

-

120 mA

Tested with simulated source

impedance of 500 nH 5 Hz to 20

MHz, and 5

× 10 uF/16 V ceramic

capacitors at the input

I

-

0.05 A

Turn-on Voltage Threshold

-

9.8 V

10.4 V

Turn-off Voltage Threshold

-

9.4 V

10.3 V

Note

Output Specifications

Parameter

Min

Typ

Max

Notes

Output Voltage Set Point

Vo=5.0 V

Vo=3.3 V

Vo=2.5 V

Vo=1.8 V

Vo=1.5 V

Vo=1.25 V

Vo=1.2 V

4.900 V

3.234 V

2.450 V

1.764 V

1.470 V

1.225 V

1.176 V

5.0 V

3.3 V

2.5 V

1.8 V

1.5 V

1.25 V

1.2 V

5.100 V

3.366 V

2.550 V

1.836 V

1.530 V

1.275 V

1.224 V

Test condition:

Vin=12 V, lout=half load

Load Regulation

Vo=5.0 V

Vo=3.3 V

Vo=2.5 V

Vo=1.8 V

Vo=1.5 V

Vo=1.25 V

Vo=1.2 V

-

-

-

-

-

-

-

10 mV

8 mV

5 mV

4 mV

3 mV

3 mV

2.5 mV

25.0 mV

16.5 mV

12.5 mV

9.0 mV

7.5 mV

6.3 mV

6.0 mV

Line Regulation

Vo=5.0 V

Vo=3.3 V

Vo=2.5 V

Vo=1.8 V

Vo=1.5 V

Vo=1.25 V

Vo=1.2 V

-

-

-

-

-

-

-

5.0 mV

3.3 mV

2.5 mV

1.8 mV

1.5 mV

1.25 mV

1.2 mV

10.0 mV

6.6 mV

5.0 mV

3.6 mV

3.0 mV

2.5 mV

2.4 mV

Regulation Over Temperature

(0

°C to +80 °C)

Vo=5.0 V

Vo=3.3 V

Vo=2.5 V

Vo=1.8 V

Vo=1.5 V

Vo=1.25 V

Vo=1.2 V

-

-

-

-

-

-

-

10 mV

9 mV

8 mV

7 mV

6 mV

5 mV

4 mV

20 mV

18 mV

15 mV

14 mV

13 mV

12 mV

12 mV

Output Ripple and Noise (pk-pk)

Vo=5.0 V

Vo=3.3 V

Vo=2.5 V

Vo=1.8 V

Vo=1.5 V

Vo=1.25 V

Vo=1.2 V

-

-

-

-

-

-

-

60 mV

50 mV

40 mV

35 mV

35 mV

30 mV

30 mV

75 mV

65 mV

60 mV

50 mV

50 mV

50 mV

50 mV

Tested at 0-20 MHz BW, with

5

×10 uF/16 V ceramic capacitors at

the input, and 5

×10 uF/10 V ceramic

capacitors and a 1000 uF electrolytic

capacitor at the output.