LTC4088-1 Datasheet | Linear Technology

FEATURES n LTC4088-1/LTC4088-2 High Efficiency Battery Charger/USB Power Manager with Regulated Output Voltage DESCRIPTIO The LTC ®4088-1/LTC4088-2 is a high efficiency USB Power Path TM controller and Li-Ion/Polymer battery charger. It includes a synchronous switching input regulator, a full-featured battery charger and an ideal diode. Designed specifically for USB applications, the LTC4088-1/LTC4088-2’s switching regulator automatically limits its input current to either 100m A, 500m A or 1A via logic control. The LTC4088-1 powers-up with the charger off; the LTC4088-2 powers-up with the charger on. The switching input stage provides power to VOUT where power sharing between the application circuit and the battery charger is managed. Charge current is automatically reduced to maintain a regulated 3.6V VOUT during low-battery conditions. As the battery is charged, VOUT tracks VBAT for high efficiency charging. This feature allows the LTC4088-1/LTC4088-2 to provide more power to the...