ACTIVE

LC5546AD

Package Image

Package : DIP8 (Pin 7 Removed)

RoHS : YES

Data Sheet(903KB)
Check Online Stock

The LC5546AD 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.

Data Download

Design Support

  • Technical Documents

Technical Documents

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 Auto Restart
OVP Auto Restart
LED Open / Short Protection NO
Dimming Function Analog
Package Weight (Typ.) 0.51 g
Automotive Qualified NO

Typical Application

Typical Application

Block Diagram

Block Diagram

Pin Configuration Definitions

Pin Configuration Definitions

Physical Dimensions

Physical Dimensions

Questions or Comments?

Please feel free to contact us if you cannot find the desired product from the lineup.