300mA Dual Input Smart Battery Backup Regulator Features: Maintains Output Regulation with Dual Inputs Dropout Voltage: 0.4V Output Current: 300mA 50µA Quiescent Current No Protection Diodes Needed Two Low-Battery Comparators Status Flags Aid Power Management Adjustable Output from 1.5V to 20V Fixed Output Voltages: 3V, 3.3V and 5V 7µA Quiescent Current in Shutdown Reverse-Battery Protection Reverse Current Protection Remove, Recharge and Replace Batteries Without Loss of Regulation