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LC5546LD
The LC5546LD 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 protection features helps to realize low component counts, and high performance-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
VCC Overcurrent protection (VCC_OCP): Pulse by pulse
VCC Pin Overvoltage Protection (VCC_OVP)
OCP Pin Overvoltage Protection（OCP_OVP）
OVP Pin Overvoltage Protection (OVP_OVP）
Overload Protection (OLP)
Thermal Shutdown (TSD)
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 | 1.90 Ω |
| Output Power / Output current | 16W |
| OCP | Pulse by pulse |
| OLP | Latch |
| OVP | Latch |
| LED Open / Short Protection | NO |
| Dimming Function | Analog |
| Package Weight (Typ.) | 0.51 g |
Typical Application
Block Diagram
Pin Configuration Definitions
Physical Dimensions
Questions or Comments?
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