CMPWR280

CALIFORNIA MICRO DEVICES CMPWR280 1.5A SmartORTM Dual Regulator with VAUX Drive Features • Automatic selection of VCC or VSBY • Drive control signal for external VAUX switch • Continuous 3.3V output supply • Glitch-free output during supply transitions • Built-in hysteresis for supply selection • VCC regulates up to 1.5A output current • VSBY regulates up to 375mA output current • Foldback current limiting • Thermal shutdown with hysteresis • On-chip controller operates from VCC, VSBY or VOUT Pin Diagram Applications • Peripheral Component Interface (PCI) Adapter Cards • Network Interface Cards (NIC’s) • Multiple Powered Systems • Systems with Standby Capabilities Typical Application Circuit Product Description The California Micro Devices’ SmartORTM CMPWR280 is a fully protected Dual-Input low dropout CMOS regulator that also provides the necessary control signal for driving an external auxiliary Pchannel MOSFET switch. The SmartORTM device automatically selects...