Datasheet Summary
OB3655x
High Precision Offline LED Lighting Power Switch
GENERAL DESCRIPTION
OB3655x is an offline LED lighting controller with high constant current (CC) precision. It can achieve low system cost for an isolated lighting application by primary side control in a single stage converter. It significantly simplifies the LED lighting system design by eliminating auxiliary winding.
The system uses the Quasi-Resonant (QR) operation and clamping frequency greatly improves the system efficiency. The advanced start-up technology is used to meet the start-up time requirement (<0.5s). The constant output current is pensated for tolerance of transformer inductance variation. And the line...