MCP73871 battery charger

Microchip has announced the MCP73871 charge-management controller — a Li-Ion/Li-polymer charger with an intelligent charge management feature that enables simultaneous AC-DC-adapter or USB-port charging and powering of devices.

The device has an integrated pass transistor and numerous battery and termination-voltage options, making it suitable for complex, portable applications.

By enabling electronic devices to be simultaneously powered and charged via either an AC-to-DC adapter or through a USB port, the controller simplifies the charging and powering of portable electronic devices.

With voltage regulation of 0.5%, the charger extends battery life by allowing the battery to be charged closer to its optimal limit.

With its integrated pass transistor, it eliminates the need for an external FET and only a few small passive components are necessary.

Also announced is the MCP73871 evaluation board to help engineers get started using the charger.