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IR Introduces Highly Integrated IRS29831 LEDrivIR Control IC Optimized for Single Stage Flyback and Buck-Boost Topologies

International Rectifier » IRS29831

International Rectifier introduced the highly integrated IRS29831 LEDrivIRTM control IC optimized for single stage Flyback and Buck-Boost topologies used in LED drivers including LED bulb replacement, LED tube lighting and down lights.

International Rectifier - IRS29831

Employing accurate primary side power regulation, the IRS29831 integrates an LED driver control IC and power MOSFET utilizing 700 V 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. The device can also operate over a wide input voltage range. Protection features include hiccup mode open-load/over-voltage protection, cycle-by-cycle primary over current limiting, and output short circuit protection.

The IRS29831 also features critical-conduction mode operation, with discontinuous and burst modes at light load as well as the ability to allow users to configure isolated designs without an opto-coupler. Available in an 8-pin DIP package, the IRS29831 has a fast startup, low quiescent current, ESD protection and noise immunity.


  • Topology: Flyback
  • Drain Source Voltage: 700 V
  • Max Drain Current: 0.65 A
  • Max Converter Power: 25 W

Availability and Pricing

Pricing for the IRS29831 begins at US $1.25 each in quantities of 10,000-units. Production quantities are available immediately. The devices are lead free and RoHS compliant. Prices are subject to change.

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