MAX38888 Continua™ Reversible Buck/Boost Regulator

Analog Devices MAX38888 Reversible Buck/Boost Regulator is in the Continua™ Family of backup power regulators using a supercapacitor or capacitor bank. The MAX38888 is designed to efficiently transfer power between a storage element and a system supply rail. When the main battery is present, and above the minimum system supply voltage, the regulator operates in buck mode and charges the storage element up to a 500mA rate. Once the storage element is charged, the circuit draws only 2.5µA of current while maintaining the supercapacitor or other storage element in its ready state. When the main supply is removed, the regulator operates in boost mode and prevents the system from dropping below the minimum operating voltage, discharging the storage element at up to a 2.5A rate.