LYTSwitch-3 Series AC/DC发光二极管驱动器集成电路 :

This series is ideal for single-stage power factor corrected constant current LED bulbs & downlighters. Each device incorporates a high-voltage power MOSFET and discontinuous mode, variable frequency variable on-time controller and also provides cycle-by-cycle current limit, output OVP, line overvoltage, comprehensive protection features, plus advanced thermal management circuitry.

• Less than ±3% CC regulation over line and load
• Power Factor >0.9
• Ensures monotonic VA reduction with TRIAC phase angle
• Low THD, 15% typical for dimmable bulbs, as low as 7% in optimized designs
• Detects leading-edge and trailing-edge TRIAC dimmers
• High-efficiency mode when no dimmer is present
• Selectable dimming profile increases design flexibility
• Fast turn-on (<500 ms)="" even="" in="" deep="" dimming<=""/>
• Supports buck, buck-boost, tapped-buck, boost, isolated and non-isolated flyback up to 20 W output
• Applications: Indoor lighting