概要

The AS3824 is a 16-channel LED TV backlight controller which performs local dimming of sections of a display screen to provide both improved picture quality and valuable power savings of up to 20% to 30%.

The AS3824 backlight controller is intended for use in the latest high-definition (HD) and ultra-high-definition (UHD, or 4K) televisions, as well as high dynamic range (HDR) monitors and displays.

The AS3824 includes a fully flexible 12-bit PWM generator for each of its 16 channels, to enable sections of a display screen to be dimmed independently. Each PWM generator may be synchronized with an external synchronization signal.

The local dimming enabled by the AS3824 also provides for additional system power savings compared to global backlight controllers.

Benefits

  • All LED backlight topologies
  • Optimum power savings through local dimming
  • Highest brightness uniformity
  • High dynamic range boost function
  • Global dimming mode available
  • Lowest BOM
  • Two package types are available
AS3824 Functional Block Diagram
AS3824 Typical Applications Diagram
AS3824 Functional Block Diagram
AS3824 Typical Applications Diagram
  • No limit of VLED or ILED, controller not exposed to high voltage/current
  • One global high accurate 10-bit DAC which sets the LED current (±.5% accurate)
  • 16 independent 8-bit DACs can be used to boost/decrease LED current within certain frames
  • Packages:
    • QFN-48 (7.0mm x 7.0mm, 0.5mm pitch)
    • LQFP-44 (10mm x 10mm, 0.8mm pitch)

アプリケーション

  • HD TVs
  • UHD TVs
  • Monitor
  • High dynamic range (HDR) monitors and displays

ドキュメント

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分類 タイトル 日時
製品概要
AS3824 Product Summary
PDF 660 KB
カタログ
Power Products Brochure
PDF 8.73 MB
2 items

設計・開発

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製品選択

    Processing table
    Pkg. Type
    Carrier Type
    Moisture Sensitivity Level (MSL)
    Price (USD) | 1ku
    ご購入 / サンプル
    型名
    AS3824A1-ZQFT
    circleアクティブ
    memory
    view_in_ar
    サンプル入手可能
    		 48 QFN Tape & Reel 3 サンプルを入手,
    AS3824E1-ZQFT
    circleアクティブ
    memory
    view_in_ar
    サンプル入手可能
    		 48 QFN Tape & Reel 3 サンプルを入手,
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