10W Off-Line LED Driver for Dimmable Solid State Lighting, 1.5 Stage

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High performance controller optimized for dimmable LED luminaires

Designed to operate from a broad input voltage range of 100VAC to 230VAC, the iW3602 provides an efficient solution for 3W-10W LED luminaires.  Incorporating Dialog's proprietary Flickerless™ technology, the iW3602 removes LED flicker and permits usage with the industry's broadest range of dimmers. Additionally, the iW3602 incorporates Dialog's proprietary PrimAccurate™ primary-side control technology, minimizing the external component count by removing the need for both the traditional opto-coupler and external compensation components, reducing solution size and cost.

The iW3602 integrates an over-temperature protection circuit that works with an external NTC resistor to reduce the drive to the output LEDs when an over-temperature condition is detected, enabling continuous light output while protecting the entire LED driver circuit. For more detailed information on this important protection feature, click here.


  • PrimAccurate™ - Isolated Off-Line AC/DC Controller
  • Integrates Dialog's Flickerless™ Technology- Removes LED Flicker
  • Ideal for 3W-10W Off-Line LED Applications
  • 45Hz to 66Hz Line Frequency Range - 50Hz/60Hz Compatible
  • Broad Range of Dimmer Capability - Leading Edge, Trailing Edge and Non-Traditional R, R-C and R-L Types - Automatic Detection of Dimmer Type
    • 1% to 100% Wide Dimming Range


  • Automatically Detects and Operates without Dimmer
  • Quasi-resonant Mode for Optimal Efficiency - 85% (Without Dimmer)
  • Low 10uA Start-Up Current
  • Fully Protected for Temperature, Sense Resistor Short Circuits, LED Open and Short Circuits and Over Voltage Conditions
  • LED Temperature Protection - External NTC Input to Reduce Drive to LEDs in Over Temperature Condition


  • 3W-10W Solid State Lighting Applications
  • Dimmable LED Luminaires

Block Diagrams

Typical applications diagram
Functional block diagram


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