The following content is an automatically extracted verbatim text
from the original manufacturer datasheet and is provided for reference purposes only.
View original datasheet text
QW2889C
Emergency Lighting Driver
General Description
Package Reference
QW2889C is a LED driver designed for Emergency Lighting. The QW2889C employs patent protected main line detecting methodology to control and drive the emergency lighting system, without any peripheral components. The QW2889C 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 compatible in QW2889C system. QW2889C integrates a precise single lithium-ion /polymer battery management functional blocks to protect the lithiumion/polymer battery, including Over Charge Protection, Over Discharge Protection.
QW2889C output current in emergency state could be dimmable according the switch ON/OFF delay time.
QW2889C Datasheet
