CMPWR025 Datasheet, PDF (1/8 Pages) California Micro Devices Corp – Dual Input SmartOR Power Switch

CMPWR025
Dual Input SmartORt Power
Switch
Product Description
The SmartORt 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
 Implements Logical “Input V_CC1 OR Input V_CC2”
 Integrated Low Impedance Switches (0.2 W TYP)
 Operating Supply Range from 2.8 V to 5.5 V
 Provides Up to 600 mA Output Current
 Glitch−Free Output During Supply Switching Transitions
 Low Operating Supply Current of 20 mA (TYP)
 User−Selectable Hysteresis for Supply Selection
 8−Pin MSOP Package
 These Devices are Pb−Free and are RoHS Compliant
Applications
 PCI Cards for Wake−On−LAN/Wake−On−Ring
 Dual Power Systems
 Systems with Standby Capabilities
 Battery Backup Systems
 See also Application Note AP−211
 USB Enabled Mobile Electronics such as MP3 Players, PDAs,
Digital Cameras and Wireless Handsets
http://onsemi.com
MSOP 8
R SUFFIX
CASE 846AD
MARKING DIAGRAM
R025
R025 = CMPWR025R
ORDERING INFORMATION
Device
CMPWR025R
Package
Shipping^†
MSOP 8 4000/Tape & Reel
(Pb−Free)
†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.
 Semiconductor Components Industries, LLC, 2011
1
April, 2011 − Rev. 4
Publication Order Number:
CMPWR025/D