ACT2802/ACT2802B/ACT2802C Rev 7, 15-Jul-16 5V/2.5A Backup Battery Pack Manager FEATURES APPLICATIONS Dedicated Single Chip Solution for Mobile Power Backup Battery Pack With Minimal Component Count Power Bank 5V/2.5A Constant Output Current Limit in Boost Mobile Power Mode Standalone Battery Charger with USB Output 2.5A Switching Charger Current Limit GENERAL DESCRIPTION Programmable 4.1V to 4.35V Battery Voltage ACT2802/ACT2802B/ACT2802C is a space-saving 95% Boost Efficiency (Vbat=4.1V) and high-performance low-profile single-chip Adaptive to 10mA-2400mA Input Sources solution for backup battery pack and standalone Battery Disconnection at Output Short battery charger. ACT2802/ACT2802B/ACT2802C <10A Low Battery Leakage Current at HZ integrates all the functions that a backup battery Mode During Storage pack needs, including switching charger, boost converter and LED indication. Boost Auto Turn-off at No Load and Push Button Turn-on ACT2802/ACT2802B/ACT2802C operates at Battery Over Current, Over Voltage, Over 1.1MHz for switching charger and 0.55MHz for Temperature and Short Circuit Protections boost converter allowing tiny external inductor and capacitors. ACT2802/ACT2802B/ACT2802C Boost Auto Startup with Load Detection provides a direct power path from input to output Up to 3.0A Input Current Limit with Prioritized with programmable current limit while providing Power Path to Output power to switching charger. Output has higher 5V+/-100mV Output Voltage in Boost Mode priority than battery charger if the programmed input current limit is reached. 1.1MHz/0.55MHz Switching Frequencies 2.2uH Inductor and Low Profile Ceramic ACT2802/ACT2802B/ACT2802C charges battery Capacitor with full cycle of preconditioning, fast charge with constant current and constant voltage until end of 4 LEDs Battery Level and Status Indication charge. The battery charger is thermally regulated Battery Impedance Compensation at 110C with charge current foldback. Full Cycle of Battery Charge Management ACT2802/ACT2802B/ACT2802C boost converter Preconditioning, Fast Charge, Top off and End steps battery voltage up to 5V. Boost converter of Charge features high efficiency, constant current regulation, Charge Current Foldback at 110C Die short circuit protection and over voltage protection. Temperature ACT2802/ACT2802B/ACT2802C provides 3.5mA IC Over Temperature Protection at 160C constant currents to drive 4 LEDs to indicate QFN4x4-24 Package battery level and charge status. Battery impedance is compensated for battery level indication. Boost CC/CV Profile 5.5 V =3.2V BAT 5.0 V =3.7V BAT 4.5 4.0 V =4.1V BAT 3.5 3.0 0 0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 Output Current (A) TM Innovative Power - 1 - www.active-semi.com Copyright 2016 Active-Semi, Inc. Boost Output Voltage (V) ACT2802/ACT2802B/ACT2802C Rev 7, 15-Jul-16 ORDERING INFORMATION LEDS AL- LATCH OFF BOOST PB TURN PART NUMBER OUTPUT FLASHLIGHT WAYS ON IN AT BOOST LIGHT LOAD PACKAGE OFF BOOST BOOST UVLO OFF TIME ACT2802QL-T1028 5V/2.5A No Yes No Yes 16s QFN44-24 ACT2802BQL-T1028 5V/2.5A Yes No Yes Yes 16s QFN44-24 ACT2802CQL-T1028 5V/2.5A Yes No No Yes 16s QFN44-24 PIN CONFIGURATION TM Innovative Power - 2 - www.active-semi.com Copyright 2016 Active-Semi, Inc.