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

3.0V-5.5V Input

-5V/1A & -12V/0.5A Output

•

Non-Isolated

•

Low Cost

•

Fixed Frequency

•

Excellent Thermal Performance

•

High Efficiency

•

High Power Density

•

OCP/SCP

•

Industrial Temperature Range

Description

The Bel x7AH-01FxxN modules are non-isolated, step down DC/DC converters that operate from a 3V-5.5V

source. Output voltage are -5V,-12V. They are packaged in a compact, overmolded package rated at 1A, 0.5A.

Optional lead forming provides a vertical mount product for minimal footprint or a surface mount option for a very

low profile. The output is closely regulated and the efficiency is typically 88% at 1A, -5V output at full load.

Part Selection

Output

Voltage

Input

Voltage

Max. Output

Current

Max. Output

Power

Typical

Efficiency

Part Number

Surface Mount

Part Number

Vertical Mount

-5V

3.0V – 5.5V

1A

5W

88%

S7AH-01F50N

V7AH-01F50N

-12V

3.0V – 5.5V

0.5A

6W

88%

S7AH-01FX2N

V7AH-01FX2N

Note: Add “0” suffix at the end of the model number to indicate “Tube Packaging”, and “R” for “Reel

Packaging”, and “G” for “Tray Packaging”.

Absolute Maximum Ratings

Parameter

Min

Typ

Max

Notes

Input Voltage (continuous)

-0.3V

-

7V

Ambient Temperature

-40

°C

-

85

°C

Storage Temperature

-40

°C

-

125

°C

Input Specifications

Parameter

Min

Typ

Max

Notes

Input Voltage

3V

-

5.5V

Input Current (full load)

-

-

-

-

2.1A

2.5A

Input Current (no load)

-

-

-

-

150mA

200mA

Input Reflected Ripple Current (pk-pk)

-

80mA

160mA

Input Reflected Ripple Current (RMS)

-

20mA

50mA

For -5V output, use a 680uF/6.3V

Oscon capacitor; For -12V output,

use 1000uF electrolytic capacitor &

22uF/10V ceramic at the input.

I

-

-

0.01A

Turn-on Voltage Threshold

-

2.63V

-

Turn-off Voltage Threshold

0.4V

1.0V

-

-

2.0V

2.3V

x7AH-01FxxN Series