FL77944: Analog/PWM Dimmable High Power LED Direct AC Driver

Datasheet: FL77944-D.pdf
Rev. A (695kB)
Product Overview
View Reliability Data
View Material Composition
Product Change Notification
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 compatibility. It achieves high efficiency with high PF and low THD, which makes the FL77944 suitable for high-efficiency LED lighting systems. The FL77944 has a dedicated DIM pin which can be used with analog or digital PWM dimming. The FL77944 can also be used with a rheostat dimmer switch which is suitable for desktop or indoor lamps.
Operation of FL77944 admits driving higher-wattage systems, such as street lights and down lights, by simply parallel connecting the driver ICs.
  • 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 in normal configuration)
  • Adjustable LED Power with an External Current Sense Resistor
  • Low Harmonic Content (THD under 20% in normal configuration)
  • Flexible LED Forward Voltage Configuration
  • Power Scalability with Multiple Driver ICs
  • Over-Temperature Protection (OTP)
  • SOP16 EP Package
  • Lighting
  • LED Lighting – High Power- Analog/PWM dimming
  • LED Lighting – Low Power – Analog/PWM dimming
  • LED Lighting – Mid Power- Analog/PWM dimming
Evaluation/Development Tool Information
Product Status Compliance Short Description Action
12 W Down Light ACLED Driver at High-Line
Budgetary Price/Unit
Case Outline
FL77944MX Last Shipments
Halide free
FL77944, Analog/PWM Dimmable High Power LED Direct AC Driver SOIC-16 751EK 3 260 Tape and Reel 2500  
Market Leadtime (weeks) : Contact Factory
Case Outlines
Previously Viewed Products
Clear List

Your request has been submitted for approval.
Please allow 2-5 business days for a response.
You will receive an email when your request is approved.
Request for this document already exists and is waiting for approval.