ACT2801
ACT2801 is 5V/1.5A Backup Battery Pack Manager manufactured by Active-Semi.
- Part of the ACT2801-Active comparator family.
- Part of the ACT2801-Active comparator family.
FEATURES
- Dedicated Single Chip Solution for Mobile
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Power With Minimal ponent Count 5V/1.5A Constant Output Current in Boost Mode 1.5A Switching Charger Programmable 4.1V to 4.35V Battery Voltage 95% Boost Efficiency (Vbat=4.1V)
APPLICATIONS
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Backup Battery Pack Power Bank Mobile Power Standalone Battery Charger with USB Output
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- Adaptive to 10m A-2400m A Input Sources
- Battery Disconnection at Output Short
- <10µA Low Battery Leakage Current at HZ
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GENERAL DESCRIPTION
ACT2801 is a space-saving and high-performance low-profile single-chip solution for backup battery pack and standalone battery charger. ACT2801 integrates all the functions that a backup battery pack needs, including switching charger, boost converter and LED indication. ACT2801 operates at 2.2MHz/1.1MHz for switching charger and 1.1MHz/0.55MHz for boost converter allowing tiny external inductor and capacitors. ACT2801 provides a direct power path from input to output with programmable current limit while providing power to switching charger. Output has higher priority than battery charger if the programmed input current limit is reached. ACT2801 charges battery with full cycle of preconditioning, fast charge with constant current and constant voltage until end of charge. The battery charger is thermally regulated at 110°C with charge current foldback. ACT2801 boost converter steps battery voltage up to 5V. Boost converter features high efficiency, constant current regulation, short circuit protection and over voltage protection. ACT2801 provides 3.5m A constant currents to drive 4 LEDs to indicate battery level and charge status.
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+/-100m V Output Voltage in Boost Mode...
