Product Description
The CMPWR300 is a dual input regulator with VAUX switch capable 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 following order VCC, VSBY, and VAUX.

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

APPLICATIONs
 • PCI adapter cards with Wake-On-LAN
 • Network Interface Cards (NICs)
 • Multiple Power Systems
 • Systems with Standby Capabilities