ACT2801B

ACT2801 / ACT2801B 5V/1.5A Backup Battery Pack Manager FEATURES Dedicated Single Chip Solution for Mobile Power With Minimal Component Count 5V/1.5A Constant Output Current Limit in Boost Mode 1.5A Switching Charger Limit Programmable 4.1V to 4.35V Battery Voltage 95% Boost Efficiency (Vbat=4.1V) Adaptive to 10mA-2400mA Input Sources Battery Disconnection at Output Short <10µA Low Battery Leakage Current at HZ Mode During Storage Boost Auto Turn-off at No Load and Push Button Turn-on Battery Over Current, Over Voltage, Over Temperature and Short Circuit Protections Boost Auto Startup with Load Detection Up to 2.0A Input Current Limit with Prioritized Power Path to Output 5V+/-100mV Output Voltage in Boost Mode 1.1MHz/0.55MHz Switching Frequencies 2.2uH SMD Inductor and Low Profile Ceramic Capacitor 4 LEDs Battery Level and Status Indication Battery Impedance Compensation Full Cycle of Battery Charge Management Preconditioning, Fast Charge, Top off and End of Charge Charge Current Foldback at 110°C Die Temperature IC Over Temperature Protection at 160°C QFN4x4-24 Package Vbat APPLICATIONS Backup Battery Pack Power Bank Mobile Power Standalone Battery Charger with USB Output GENERAL DESCRIPTION ACT2801/ACT2801B is a space-saving and highperformance low-profile single-chip solution for backup battery pack and standalone battery charger. ACT2801/ACT2801B integrates all the functions that a backup battery pack needs, including sw...