概要

The ISL97672B is an integrated 6-channel power LED driver for LCD backlight applications. The ISL97672B is capable of driving LEDs with an input from 4. 5V to 26. 5V and a maximum output up to 45V. The ISL97672B employs an adaptive boost switching architecture that allows direct PWM dimming with dimming duty cycle as low as 0. 007% at 200Hz or 0. 8% at 20kHz. PWM Dimming frequency can be as high as 30kHz. The ISL97672B employs dynamic headroom control that monitors the highest LED forward voltage string for output regulation to minimize headroom voltage and power loss in a typical multi-string operation. Typical current matching between channels is ±0. 7%. The ISL97672B incorporates extensive protection functions that flag whenever a fault occurs. The protections include string-open and short-circuit detections, OVP, OTP, and an optional output short-circuit protection with external fault disconnect switch. The ISL97672B is offered in a compact 20 Ld QFN 3x4 package and can operate in ambient temperatures of -40°C to +85°C.

ISL97672B Functional Diagram
ISL97672B Functional Diagram
  • 6 x 50mA channels
  • 4.5V to 26.5V input
  • 45V output maximum
  • Adaptive boost switching architecture
  • Direct PWM dimming with dimming linearity of 0.007%~100% at 200Hz or 0.8%~100% <20kHz
  • Adjustable 200kHz to 1.4MHz switching frequency
  • Dynamic headroom control
  • Fault protections with latched flag indication
  • String open/short-circuit
  • Overvoltage Protection (OVP)
  • Over-Temperature Protection (OTP)
  • Optional output short-circuit fault protection switch
  • Current matching ±0.7%
  • 20 Ld 3x4 QFN package

アプリケーション

  • Notebook displays LED backlighting
  • LCD monitor LED backlighting
  • Multi-function printer scanning light source

ドキュメント

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分類 タイトル 日時
データシート
ISL97672B Datasheet
PDF 1.07 MB
製品変更通知
PCN20029A - Alternate bond wire material and assembly facility of the listed Renesas QFN packaged products
PDF 326 KB
製品変更通知
PCN13005 - Alternate Bond Wire Material for Assembly of the Listed Intersil DFN/QFN Packaged Products - Carsem (CAS) Ipoh, Malaysia
PDF 84 KB
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製品選択

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    Pkg. Type
    Carrier Type
    Moisture Sensitivity Level (MSL)
    Price (USD) | 1ku
    ご購入 / サンプル
    型名
    ISL97672BIRZ
    circleアクティブ
    memory
    spa
    view_in_ar
    サンプル入手可能
    今すぐ購入する
    		QFN Tube 3 1.958 サンプルを入手,
    ISL97672BIRZ-T
    circleアクティブ
    memory
    spa
    view_in_ar
    サンプル入手可能
    		 QFN Reel 3 サンプルを入手,
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