CMPWR300SA Ver la hoja de datos (PDF) - California Micro Devices Corp
Número de pieza
componentes Descripción
Fabricante
CMPWR300SA Datasheet PDF : 11 Pages
| |||
CALIFORNIA MICRO DEVICES
CMPWR300
500mA SmartORTM DUAL REGULATOR WITH VAUX SWITCH
Features
8-pin Power SOIC package
Continuous 3.3V output from three inputs
Complete Power Management solution
VCC, VSBY Regulator supplies 500mA output
Built-in hysteresis when selecting input supplies
Integrated switch has very low RDS(ON) 0.12Ω (typ.)
Large Bypass Capacitors on inputs not required
Pin Diagram
Applications
PCI adapter cards with Wake-On-LAN
Network Interface Cards (NICs)
Multiple Power Systems
Systems with Standby Capabilities
Product Description
The CMPWR300 is a dual input regulator with VAUX switch ca-
pable of delivering 3.3V/500mA continuously. The output power
is provided from three independent input voltage sources on a
prioritized basis. Power is always taken in priority using the fol-
lowing order VCC, VSBY, and VAUX.
When VCC (5V) or VSBY is present, the device automatically en-
ables the regulator and produces a stable 3.3V output at VOUT.
When only VAUX (3.3V) is present, the device provides a low
impedance direct connection (0.12Ω typ.) from VAUX to VOUT.
All the necessary control circuitry needed to provide a smooth
and automatic transition between all three supplies has been
incorporated. This allows both VCC and VSBY to be dynamically
switched without loss of output voltage.
Typical Application Circuit
Simplified Electrical Schematic
STANDARD PART ORDERING INFORMATION
Package
Ordering Part Number
Pins
Style
Part Marking
8
SOIC Power
CMPWR300SA
When placing an order please specify desired shipping: Tubes or Tape & Reel.
© 2000 Calirornia Micro Devices Corp. All rights reserved. CMPWR300 is a trademark of California Micro Devices Corp.
12/5/2000
215 Topaz Street, Milpitas, California 95035 Tel: (408) 263-3214
Fax: (408) 263-7846
www.calmicro.com
C0621199
1
Share Link: 