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

4.5 Vdc - 32 Vdc Input

1.2 Vdc - 5.0 Vdc/1 A Output

Input Specifications (continued)

Parameter

Min

Typ

Max

Notes

Input Reflected Ripple Current

(pk-pk)

-

300 mA

420 mA

Input Reflected Ripple Current

(rms)

-

100 mA

160 mA

Tested with simulated source impedance of 500nH,

5 Hz to 20 MHz and one 100 uF/50 V electrolytic

capacitor and a 3.3 uF/50 V ceramic capacitor at

the input

I

-

0.02 A

0.1 A

Turn on Voltage Threshold

-

-

5.0 V

4.1 V

7.0 V

4.5 V

Turn off Voltage Threshold

-

-

3.6 V

3.3 V

5.0 V

4.0 V

Note

Output Specifications

Parameter

Min

Typ

Max

Notes

Output Voltage Set Point

4.90 V

3.234 V

2.450 V

1.764 V

1.470 V

1.176 V

5.0 V

3.3 V

2.5 V

1.8 V

1.5 V

1.2 V

5.10 V

3.366 V

2.550 V

1.836 V

1.530 V

1.224 V

Test conditions:

Vin=20 V, Io=50% full

load

Line Regulation

-

-

-

-

-

-

±5 mV

±3 mV

±2 mV

±2 mV

±1 mV

±1 mV

±10 mV

±6 mV

±5 mV

±4 mV

±3 mV

±2 mV

Load Regulation

-

-

-

-

-

-

±5 mV

±3 mV

±2 mV

±2 mV

±1 mV

±1 mV

±10 mV

±6 mV

±5 mV

±4 mV

±3 mV

±2 mV

Regulation Over Temperature

(-40

°C to +85 °C)

-

±10 mV

±20 mV

Output Current

0 A

-

1 A

Current Limit Threshold

2 A

-

3 A

Short Circuit Surge Transient

-

0.02 A

0.1 A

Ripple and Noise (rms)

-

6 mV

10 mV

Ripple and Noise (pk-pk)

-

60 mV

100 mV

Test condition: 0-20 MHz

BW

Turn on Time

-

6 mS

30 mS

Overshoot at Turn on

-

2%

5%

Output Capacitance

0 uF

-

400 uF