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LC5545LD - LED Driver

General Description

The LC5540LD series are isolated LED drivers in which a power MOSFET and a control IC are highly integrated.

The IC provides the systems that can comply with the harmonics standard (IEC61000-3-2 Class C) in all conditions, including a light load condition.

Key Features

  • the IC can provide and more cost-effective power supply systems with fewer external components. Features.
  • Built-in On-time Control Circuit (High Power Factor Achieved by Average Current Control).
  • Built-in Startup Circuit (Reduced Numnber of External Components).
  • Soft Start Function (Startup Stress Reduction for Power MOSFET and Secondary Rectifier Diode).
  • Bias Assist Function (Improved Startup Performance, VCC Voltage Drop Suppresion in Operation, Reduced Capacitance of VCC.

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No Input Electrolytic Capacitor Required, IEC61000-3-2 Class-C Isolated LED Driver IC LC5540LD Series Data Sheet Description The LC5540LD series are isolated LED drivers in which a power MOSFET and a control IC are highly integrated. The IC provides the systems that can comply with the harmonics standard (IEC61000-3-2 Class C) in all conditions, including a light load condition. These systems, moreover, can be achieved without an input electrolytic capacitor. The IC employs the average current and quasi-resonant controls: the average current control realizes high power factors, whereas the quasi-resonant control contributes to high efficiency and low noise.