FL7733A: LED Driver with Power Factor Correction, Primary-Side-Regulated

Description: The FL7733A is a highly-integrated PWM controller ...
  • The FL7733A is a highly-integrated PWM controller with advanced Primary-Side Regulation (PSR) technique to minimize components in low-to-mid-power LED lighting converters.
    Using an innovative TRUECURRENT® technology to provide tight tolerance constant-current output, this LED driver enables designs with constant current (CC) tolerance of less than ±1% over the universal line voltage range to meet stringent LED brightness requirements.
    By minimizing turn-on time fluctuation, high power factor and low THD over the universal line range are obtained in the FL7733A. An integrated high-voltage startup circuit implements fast startup and high system efficiency. During startup, adaptive feedback loop control anticipates the steady-state condition and sets initial feedback condition close to the steady state to ensure no overshoot or undershoot of LED current.The FL7733A also provides powerful protections, such as LED short / open, output diode short, sensing resistor short / open, and over-temperature for high system reliability.
    The FL7733A controller is available in an 8-pin Small-Outline Package (SOP).
  • Features
  • Performance
  • < ±3% Total Constant Current Tolerance Over All Conditions
  • < ±1% Over Universal Line Voltage Variation
  • < ±1% from 50% to 100% Load Voltage Variation
  • < ±1% with ±20% Magnetizing Inductance Variation
  • Primary-Side Regulation (PSR) Control for Cost-Effective Solution without Requiring Input Bulk Capacitor and Secondary Feedback Circuitry
  • Application Input Voltage Range: 80 VAC - 308 VAC
  • High PF of > 0.9, and Low THD of < 10% Over Universal Line Input Range
  • Fast < 200 ms Start-up (at 85 VAC) using Internal High-Voltage Start-up with VDD Regulation
  • Adaptive Feedback Loop Control for Startup without Overshoot
  • LED Short / Open Protection
  • Output Diode Short Protection
  • Sensing Resistor Short / Open Protection
  • VDD Over-Voltage Protection (OVP)
  • VDD Under-Voltage Lockout (UVLO)
  • All Protections are Auto Restart (AR)
  • Over-Temperature Protection (OTP)
  • Cycle-by-Cycle Current Limit
  • Applications
  • Lighting
  • LED Lighting – Mid Power – Non dimming
  • LED Lighting – Mid Power- Analog/PWM dimming
  • LED Lighting – Low Power – Non dimming
  • LED Lighting – Low Power – Analog/PWM dimming
  • LED Lighting – High Power – Non dimming
  • LED Lighting – High Power- Analog/PWM dimming
  • Technical Documentation & Design Resources
    Evaluation/Development Tool Information
    Availability and Samples
  • Status: Active
  • Compliance: Pb-free Halide free 
  • Description: LED Driver with Power Factor Correction, Primary-Side-Regulated, Primary-Side-Regulated LED Driver with Power Factor Correction
  • Package Type: SOIC-8
  • Package Case Outline: 751EB
  • MSL: 1
  • Container Type: REEL
  • Container Qty: 2500
  • Inventory

  • Market Leadtime (weeks):4 to 8
  • Arrow:0
  • Digikey:>1K
  • Newark:<1K
  • Specifications
  • Topology: PSR PFC Flyback 
  • VI Min (V): 17.5 
  • VI Max (V): 308 VAC 
  • VO Max (V): 18 VGATE 
  • IO Max (mA): 60/180 mA - Source/Sink 
  • fSW Typ (kHz): 70 
  • Package Type: SOIC-8 
  • ON Semiconductor Full Web Site