FL77904 - Fairchild Semiconductor

FL77904 Phase-cut Dimmable Compact LED Direct AC Driver

The FL77904 is a direct AC line LED driver with a minimal number of external RC passive components. In normal configuration, one resistor adjusts LED current for desired system luminance and another bypass capacitor provides a stable voltage to an internal biasing shunt regulator. The FL77904 provides phase-cut dimming with wide dimming range, smooth dimming.

Features

 The simplest Direct AC LED Driver with Only Two External RC Passive Components
 Wide AC Input Range: 90~305 VAC
 Four Integrated High-Voltage LED Constant Current Sinks of up to 75 mA RMS Input Current Capability
 High Power Factor (above 0.98 in normal configuration) Low Harmonic Content (THD under 20% in normal configuration)
 Low Flicker Index by Self Valley Fill with No Degradation of PF and THD
 Adjustable LED Power with an External Current Sense Resistor
 TRIAC Dimmable (Leading/Trailing Edge)
 Rheostat Dimmable Flexible LED Forward Voltage Configuration
 Power Scalability with.