International Rectifier – IRS29831: Highly Integrated LEDrivIR™ Control IC Optimized for Single Stage Flyback and Buck-Boost Topologies


Employing accurate primary side power regulation, the IRS29831 integrates an LED driver control IC and power MOSFET utilizing 700V technology and features high voltage start-up to offer a simple cost effective single stage solution while maintaining a high power factor and low Total Harmonic Distortion (THD) for improved efficiency. IRS29831-based LED driver circuits also offer smooth, flicker-free dimming with triac based dimmers. Protection features include hiccup mode open-load/ over-voltage protection, cycle-by-cycle primary over current limiting, and output short circuit protection.


  • Integrated 700V MOSFET
  • Burst mode operation at light load
  • 150μA micro power start-up
  • 2.5mA quiescent current
  • Compatible with triac dimmers
  • Critical-conduction/transition mode operation
  • Overcurrent protection
  • Latch immunity and ESD protection
  • Open load/over-voltage protection
  • 10k MSRP: $1.25