OBSOLETE
[ Alternative : LC5546LD]
LC5545LD
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.
Features
-
・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
Application
-
・LED lighting equipment
Ceiling lights
Down lights, etc
Specifications
| Type | Power IC |
|---|---|
| Circuit Type | Flyback |
| Isolated / Non-Isolated | Isolated |
| MOSFET Breakdown Voltage | 650 V |
| On-Resistance | 3.95 Ω |
| Output Power / Output current | 10W |
| OCP | Pulse by pulse |
| OLP | Latch |
| OVP | Latch |
| LED Open / Short Protection | NO |
| Dimming Function | Analog |
| Package Weight (Typ.) | 0.51 g |
Block Diagram
Pin Configuration Definitions
Physical Dimensions
Questions or Comments?
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