LED Direct AC Drive Solutions

Although lighting system developers have been moving to solid-state lighting solutions, they have needed to use expensive light engines combining LEDs with switch mode power supply (SMPS) technology. Customers want smaller and low-cost solutions that are easier to implement.

Fairchild’s new LED Direct AC Drive products provide cost-effective integrated circuit solutions that enable phase-cut dimming, analog dimming and PWM dimming capabilities for smart commercial lighting applications.

The FL779xx family provides solid-state lighting solutions that have smaller form factors, scalable power, high performance, and longer system lifetimes. These solutions can scale power from 12W to 120W, reducing the number of different ICs that customers need to have in their inventory. Compared to SMPS solutions, these drivers do not need magnetic components and electrolytic caps, enabling them to fit into tight spaces and increase system lifetimes. They can also be tuned for low flicker without compromise on the PF and THD performance.

Key Features

  • Lower cost of ownership and smaller footprint
  • Reduced BOM increases reliability
  • High PF (>0.9), low THD (<20%)
  • Excellent EMI
  • Phase-cut dimming
  • Analog and PWM dimming
  • Supports smart lighting system controls
  • High quality of light
  • Flexible LED configuration


  • Down lights
  • High bay lights
  • Troffers
  • Street lights, tunnel lights, and other outdoor lighting


Part IDDescriptionAnalog &
PWM Dimming
TapsMax Power
Ratings (at 120 VAC)
FL77904Compact LED Direct AC DriverNo49WSamplesSeptember 2016
FL77905Analog/PWM Dimmable Compact LED Direct AC DriverYes39WSamplesSeptember 2016
FL77944Analog/PWM Dimmable High Power LED Direct AC DriverYes418WSamplesFEBFL77944A1