Charge Management Controller Enables Simultaneous AC-DC Adapter or USB-Port Battery Charging
Microchip Technology introduced its 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 single-chip charger features an integrated pass transistor, and numerous battery and termination-voltage options — making it suitable for complex, space-constrained 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 MCP73871 charge-management controller simplifies the charging and powering of today’s portable electronic devices. With accurate voltage regulation of 0.5 percent, the charger is said to extend battery life by allowing the battery to be charged closer to its optimal limit. Additionally, with its integrated pass transistor, the charger eliminates the need for an external FET, and only a few small passive components are necessary.