ACT4455

Rev 2, 21-Nov-12

Innovative Power

TM

- 7 -

www.active-semi.com

Copyright © 2012 Active-Semi, Inc.

APPLICATIONS INFORMATION CONT’D

current. In that case, the output capacitor is chosen

to have sufficiently low ESR.

For ceramic output capacitor, typically choose a

capacitance of about 22µF. For tantalum or

electrolytic capacitors, choose a capacitor with less

than 50mΩ ESR.

Rectifier Diode

Use a Schottky diode as the rectifier to conduct

current when the High-Side Power Switch is off.

The Schottky diode must have current rating higher

than the maximum output current and a reverse

voltage rating higher than the maximum input

voltage.