DESCRIPTION

· Ideal for single-stage power factor corrected constant current LED bulbs and downlighters.

· Incorporates a high-voltage power MOSFET and discontinuous mode, variable frequency variable on-time controller.

· Provides cycle-by-cycle current limit, output OVP, line overvoltage, comprehensive protection features, and advanced thermal management circuitry.

· Built-in TRIAC detector for leading-edge and trailing-edge dimmers.

· Low-side switching topology ensures low EMI and reduces input filter components size.

FEATURES

· Combined Single-Stage PFC + Accurate CC Output with less than ±3% CC regulation.

· Power Factor >0.9 and low THD, typically 15% for dimmable bulbs.

· Advanced Integrated TRIAC Dimmer Detection for leading-edge and trailing-edge dimmers.

· High-efficiency mode when no dimmer is present and selectable dimming profile.

· Fast turn-on (<500 ms) with low pop-on and dead-travel.

· Active bleeder drive for widest dimmer compatibility.

· Supports multiple topologies including buck, buck-boost, tapped buck-boost, boost, isolated and non-isolated flyback.

· Up to 20 W output with comprehensive protection features.

· No electrolytic bulk capacitors or optoisolators for increased lifetime.

APPLICATIONS

· Single-stage power factor corrected constant current LED bulbs.

· LED downlighters with TRIAC dimming compatibility.

· Designs requiring high efficiency and low EMI.

· Applications needing advanced thermal management and comprehensive protection features.