Bel Fuse Inc. 206 Van Vorst Street, Jersey City, NJ 07302

• Tel 201-432-0463 • Fax 201-432-9542 • www.belfuse.com

ISOLATED DC/DC CONVERTERS

18 Vdc - 36 Vdc Input

12 Vdc /10 A, 3.3 Vdc/30 A

Outputs

Input Specifications (continued)

Parameter

Min

Typ

Max

Notes

Input Reflected Ripple Current

(rms)

5 mA

10 mA

Input Reflected Ripple Current

(pk-pk)

-

25 mA

40 mA

Tested with simulated source impedance

of 10 uH, 5 Hz to 20 MHz; use a 100

uF/100 V electrolytic cap with ESR = 1

ohm max. at 200 kHz at 25

°C.

I

-

0.1 A

0.5 A

Turn-on Voltage Threshold

16 V

16.5 V

17 V

Turn-off Voltage Threshold

15 V

15.5 V

16.2 V

Note: All specifications are typical at 25

°C unless otherwise stated.

Output Specifications

Parameter

Min

Typ

Max

Notes

Output Voltage Set Point

Vo=1.8 V

Vo=3.3 V

Vo=12 V

1.773 V

3.250 V

11.76 V

1.80 V

3.30 V

12.0 V

1.827 V

3.350 V

12.24 V

Vin=24 V, Io=50% load

Load Regulation

Vo=1.8 V

Vo=3.3 V

Vo=12 V

-

-

-

±6 mV

±8 mV

±12 mV

±12 mV

±16 mV

±24 mV

line Regulation

Vo=1.8 V

Vo=3.3 V

Vo=12 V

-

-

-

±6 mV

±8 mV

±12 mV

±12 mV

±16 mV

±24 mV

Regulation Over Temperature

(-40deg.C ~ +85deg.C)

Vo=1.8 V

Vo=3.3 V

Vo=12 V

-

-

-

±15 mV

±20 mV

±30 mV

±30 mV

±40 mV

±60 mV

Ripple and Noise (rms)

Vo=1.8 V

Vo=3.3 V

Vo=12 V

-

-

-

30 mV

30 mV

30 mV

50 mV

50 mV

50 mV

Ripple and Noise (pk-pk)

Vo=1.8 V

Vo=3.3 V

Vo=12 V

-

-

-

60 mV

80 mV

100 mV

100 mV

120 mV

150 mV

0-20 MHz BW, with a 1 µF ceramic cap and

a 10 uF tantalum cap at the output.

Output Current Range

Vo=1.8 V

Vo=3.3 V

Vo=12 V

0 A

0 A

0 A

-

-

-

30 A

30 A

10 A

Output DC Current Limit

Vo=1.8 V

Vo=3.3 V

Vo=12 V

33 A

33 A

11 A

39 A

39 A

13 A

45 A

45 A

15 A

Short Circuit Surge Transient

-

2 A

4 A

Turn on Time

-

60 mS

100 mS

Overshoot at Turn on

-

0%

5%

Output Capacitance

Vo=1.8 V

Vo=3.3 V

Vo=12 V

0 uF

0 uF

0 uF

-

-

-

20000 uF

10000 uF

1500 uF