The LC5540LD series is the power IC for the isolated type LED driver which has an incorporated power MOSFET,designed for input capacitorless applications, and making it possible for systems to comply with the harmonics standard (IEC61000-3-2 class C) ,even during light load condition.The controller adapts the average current control method for realizing high power factors, and the quasi-resonant topology contributes to high efficiency and low EMI noise. The rich set of protectionfeatures helps to realize low component counts, and highperformance-to-cost power supply.
Feature
- Integrated on-time control circuit
- Integrated start-up circuit
- Integrated soft-start circuit
- Integrated bias assist circuit
- Integrated Leading Edge Blanking (LEB) circuit
- Integrated maximum on-time limit circuit
- Protection functions Overcurrent protection (OCP): Pulse by pulse Overvoltage protection (OVP): latch shutdown Overload protection (OLP): latch shutdown Thermal shutdown (TSD): latch shutdown
Applications
- LED lighting equipment Ceiling lights Down lights, etc
