CMPWR280 Description
The ON Semiconductor’s SmartORt CMPWR280 is a fully protected Dual−Input low−dropout CMOS regulator that also provides the necessary control signal for driving an external auxiliary P−channel MOSFET switch. The SmartORt device automatically selects one of three possible inputs on a priority basis: VCC (1.5 A), VSBY (375 mA) or VAUX via the drive signal used to control an external switch.
CMPWR280 Key Features
- Selects from 3 Input Voltages and Provides 3.3 V Output
- Automatic Selection of VCC, VSBY or VAUX
- Drive Control Signal for External VAUX Switch
- Glitch-Free 3.3 V Output During Supply Transitions
- Built-In Hysteresis for Supply Selection
- VCC Regulates Up to 1.5 A Output Current
- VSBY Regulates Up to 375 mA Output Current
- Foldback Current Limiting
- Thermal Shutdown with Hysteresis
- Standard 5-lead TO-263 Package