概要

The iW3989 AC direct LED driver offers a high-performance, low BOM cost approach for phase-cut dimming SSL LED driver applications by integrating a high-voltage MOSFET and eliminating the need for magnetics, an RC damper and an external bleeder. Ideal for downlights and replacement bulbs such as GU10, PAR, A19, and BR types, the device can operate with virtually all dimmer types including leading-edge, trailing-edge and smart dimmers, while providing a very fast dimmer transient response.

The iW3989 achieves efficiency similar to a switch-mode converter without utilizing magnetics for energy storage, which addresses the thermal challenges of SSL lighting without adding unnecessary cost. And by removing the magnetic component, there is no audible noise when interfacing with a TRIAC dimmer, providing a noise-free, flicker-free and robust solution that approaches the feel of an incandescent lighting experience.

iW3989 Functional Block Diagram
iW3989 Typical Applications Diagram
iW3989 Functional Block Diagram
iW3989 Typical Applications Diagram
  • 15W Output Power
  • AC Direct LED Driver – No Magnetics
  • Integrated High Voltage MOSFET
  • Good Phase-Cut Dimmer Compatibility
    • Leading-Edge
    • Trailing-Edge
    • Smart Dimmers
  • Flicker-free and No Audible Noise
  • Wide Dimming Range: 1% - 100%, with 1% Resolution
  • Fully Protected
    • LED Open-Circuit and Short-Circuit
    • Current Setting Resistor Short Circuit
    • Over-Temperature Derating
    • Thermal Shutdown
  • Small, QFN Package

アプリケーション

  • SSL Replacement Bulbs
    • GU10
    • AR19
    • BR
    • PAR
  • Downlights

設計・開発

ECADモデル

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ECADモデルを調べる
Diagram of ECAD Models

製品選択

    Processing table
    Pkg. Type
    Carrier Type
    Moisture Sensitivity Level (MSL)
    ご購入 / サンプル
    型名
    IW3989-00
    circleアクティブ
    memory
    view_in_ar
    サンプル入手可能
    		 QFN Tape & Reel 1 サンプルを入手,
    IW3989-20
    circleアクティブ
    memory
    view_in_ar
    サンプル入手可能
    		 QFN Tape & Reel 1 サンプルを入手,
    IW3989-30
    circleアクティブ
    memory
    view_in_ar
    サンプル入手可能
    		 QFN Tape & Reel 1 サンプルを入手,
    Parametric Table tips

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