FL77944 - Fairchild Semiconductor

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

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. The FL77944 provides phase-cut dimming with wide dimming range, smooth dimming control and good dimmer compat.

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)
 SOIC-16 EP Package
 Flexible LED Forward Voltage Configuration
 Power Scalability with Multiple Driver ICs
 Over-Temperature Protection .