Datasheet Summary
Emergency Lighting Driver
General Description
Package Reference
QW2889F is a LED driver designed for Emergency Lighting. The QW2889F employs patent protected main line detecting methodology to control and drive the emergency lighting system, without any peripheral ponents. The QW2889F can drive an LED load directly or to enable a boost circuitry, while the AC input main line could be 85-265Vac.
With Patented AC main line detection, the N or L line is patible in QW2889F system. QW2889F integrates a precise single lithium-ion /polymer battery management functional blocks to protect the lithiumion/polymer battery, including Over Charge Protection, Over Discharge...