High-current charger IC touts digital edge

Sunnyvale, Calif. – Advanced Analogic Technologies’ AAT3686, a lithium-ion/polymer battery charger IC powered by the USB port or an AC adapter, boasts a number of leading edge features. These include a digital (versus analog) thermal loop for quicker response and more stable operation in the AC adapter mode, the highest charging current capability for a chip of this kind, circuitry that cuts back on the charge current depending on the condition of the alternative (USB) power source, and a serial data output to an external processor to provide system feedback on a wide range of battery charge and battery status states.