瑞萨电子 (Renesas Electronics Corporation)
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iW339

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3-in-1 Secondary-Side Signal Interface Controller with Optimized Output Drive

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iW339 DatasheetiW339 Product Summary

概览

The iW339 is a secondary-side PWM signal generator that works with three types of dimming inputs: PWM dimming, 0V to 10V linear dimming, or simple dimming using a single resistor to ground from the DIM pin. The iW339 converts any of these three signals into a 1% to 100% PWM duty cycle output that provides a dimming signal to a primary-side LED driver such as the iW3636, eliminating the need for transformers or other driver circuitry.

iW339 Functional Block Diagram
iW339 Typical Applications Diagram
iW339 Functional Block Diagram
iW339 Typical Applications Diagram
  • Operating range: 15V to 60V
  • 3-in-1 dimmer interface
    • 0V to 10V analog
    • PWM (10V)
    • Resistor
  • Highly integrated for low BOM cost
    • Integrated current source for driving 0V to 10V dimmers
    • Integrated optocoupler driver for isolated applications
  • 1% PWM duty cycle tolerance
  • Selectable frequency range via external capacitor
  • Shutdown pin to minimize standby power
  • 0V to 10V analog dimming
  • PWM LED dimming
  • Resistor LED dimming

设计和开发

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