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 size.

FEATURES

· Combined Single-Stage PFC + Accurate CC Output with less than ±3% CC regulation.
· Power Factor >0.9 and low THD (15% typical for dimmable bulbs).
· Advanced Integrated TRIAC Dimmer Detection with high-efficiency mode when no dimmer is present.
· Supports multiple topologies: buck, buck-boost, tapped buck-boost, boost, isolated and non-isolated flyback.
· Comprehensive protection features: input and output overvoltage, output short-circuit and open-loop protection.
· Advanced thermal control with thermal foldback and end-stop shutdown.

APPLICATIONS

· LED bulbs and downlighters.
· Open frame designs with adequate heat sinking.
· Cost-optimized designs with different power levels and MOSFET voltage options.
· Maximum practical continuous power up to 20 W in open frame design.