 Semiconductor Components Industries, LLC, 2011

April, 2011 − Rev. 4

1

Publication Order Number:

CMPWR025/D

CMPWR025

Dual Input SmartORt Power

Switch

Product Description

The SmartOR

t CMPWR025 is a dual input power switch that

selects between two different power inputs and delivers it to one

output. The device integrates two very low impedance power switches

and automatically implements an OR function that selects the higher

of the two inputs. Hysteresis is built in (and is user selectable) to

prevent switch chatter.

The CMPWR025 is a much−improved solution over simply ORing

two diodes, due to the greatly reduced losses of the CMPWR025 when

compared to low forward drop Schottky diodes.

The CMPWR025 is designed to operate above the 1 W (375 mA at

3.3 V) sleep mode rating stated in the PCI Rev 2.2 spec. In fact the

CMPWR025 current rating is dependent upon the power dissipation

resulting from the voltage drop across the internal switch elements.

See the Typical DC Characteristics section in this data sheet for

details.

For IAPC (Instantly Available Personal Computer) applications see

ON Semiconductor Application Note “Instantly Available PCI Card

Power Management”.

The CMPWR025 is housed in a 8−lead MSOP package and is

available with RoHS compliant lead−free finishing.

Features

Applications

Digital Cameras and Wireless Handsets

MARKING DIAGRAM

Device

Package

ORDERING INFORMATION

http://onsemi.com

CMPWR025R

MSOP 8

(Pb−Free)

4000/Tape & Reel

†For information on tape and reel specifications,

including part orientation and tape sizes, please

refer to our Tape and Reel Packaging Specification

Brochure, BRD8011/D.

R025

= CMPWR025R

R025

MSOP 8

R SUFFIX

CASE 846AD