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FL77944 - Analog/PWM/Phase-cut Dimmable High Power LED Direct AC Driver

General Description

The FL77944 is a direct AC line LED driver with a minimal number of external RC passive components.

In normal configuration, one resistor is to adjust LED power, and one capacitor is to provide a stable voltage to an internal biasing shunt regulator.

Key Features

  • The simplest Direct AC LED Driver with Only Two External RC Passive Component.
  • Wide AC Input Range: 90~305 VAC.
  • Four Integrated High-Voltage LED Constant Current Sinks of up to 150 mA (RMS) Capability.
  • TRIAC Dimmable (Leading/Trailing Edge).
  • Rheostat Dimmable.
  • Analog/Digital PWM Dimming Function.
  • High Power Factor (above 0.98 typically).
  • Adjustable LED Power with an External Current Sense Resistor.
  • Low Harmonic Content (THD under 20% typically).

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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FL77944 — Analog/PWM/Phase-cut Dimmable High Power LED Direct AC Driver July 2016 FL77944 Analog/PWM/Phase-cut Dimmable High Power LED Direct AC Driver Features  The simplest Direct AC LED Driver with Only Two External RC Passive Component  Wide AC Input Range: 90~305 VAC  Four Integrated High-Voltage LED Constant Current Sinks of up to 150 mA (RMS) Capability  TRIAC Dimmable (Leading/Trailing Edge)  Rheostat Dimmable  Analog/Digital PWM Dimming Function  High Power Factor (above 0.