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Single Stage PFC with CC Output, TRIAC-dimmable LED Driver IC for Non-Isolated Applications

This is an active product that is not recommended for new designs.

Product Details


Designed for compact LED replacement lamps, LinkSwitch-PL enables very small and low cost TRIAC dimmable, single-stage, power factor corrected, constant current drivers for solid state lighting. LinkSwitch-PL is optimized for direct LED current sensing, operates over a wide input voltage range and delivers output power up to 16 W. Its innovative control algorithm provides flicker-free TRIAC dimming with minimal external components.

Each device incorporates a 725 V rated power MOSFET, a novel discontinuous mode variable frequency/variable on-time controller, frequency jittering, cycle-by-cycle current limit and hysteretic thermal shutdown in a monolithic IC.

Product Highlights

Dramatically Simplifies Off-line LED Drivers

  • Single-stage power factor correction and accurate constant current (CC) output
  • Flicker-free, phase-controlled TRIAC dimming
  • Very low component count with small non-electrolytic bulk capacitor
  • Completely eliminates control loop compensation

Advanced Performance Features

  • Optimized for non-isolated flyback designs
  • Fast start-up time
  • Frequency jitter greatly reduces EMI filter size and costs
  • Low dissipation direct sensing of LED current

Advanced Protection and Safety Features

  • Cycle skipping regulation for abnormally low output power to clamp peak output current delivered
  • 725 V integrated MOSFET allows small bulk capacitance and maximizes power capability
  • Short circuit, overload, open feedback and output overvoltage protection
  • Hysteretic thermal shutdown
  • Meets high-voltage creepage between DRAIN and all other pins both on PCB and at package

EcoSmart® - Energy-Efficiency Technology

  • High power factor optimizes system lumens per input VA
  • Control algorithm balances switching and conduction losses over line and load to maintain optimum efficiency

Green Package

  • Halogen free and RoHS compliant package