LT1509 - Power Factor and PWM Controller

Features
  • PFC and PWM Single Chip Solution
  • Synchronized Operation up to 300kHz
  • 99% Power Factor over 20:1 Load Current Range
  • Current Mode PWM
  • Instantaneous Overvoltage Protection
  • Dedicated Overvoltage Protection (OVP Pin)
  • Minimal Line Current Dead Zone
  • Typical 250µA Start-Up Supply Current
  • Line Switching Noise Filter
  • Low Quiescent Current: 13mA
  • Fast 2A Peak Current Gate Drivers
  • Separate Soft Start Controls
Typical Application
Applications
  • Universal Power Factor Corrected Power Supplies and Preregulators
Packaging
Order Information
Part NumberPackageTempPrice(1-99)Price (1k)*
LT1509CN#PBFN-20C$5.25$3.95
LT1509CSW#PBFSW-20C$5.25$3.95
LT1509CSW#TRPBFSW-20C$4.05
LT1509IN#PBFN-20I$5.85$4.35
LT1509ISW#PBFSW-20I$5.85$4.35
LT1509ISW#TRPBFSW-20I$4.45
Datasheet
Application Note
Design Note
Reliability Data
Related Product
LT1509 - Power Factor and PWM Controller
AN66 - Linear Technology Magazine Circuit Collection, Volume II
DN143 - Single IC, Power Factor Corrected, Off-Line Supply
R389 Reliability Data
LT1509 Footprints and Symbols