MAX20056B

Integrated, 6-Channel High-Brightness LED Driver with Very Wide PWM Dimming Ratio and Phase Shifting for Automotive Displays

Multistring Driver Provides Highest Efficiency and Lowest External Component Count with Noise-Mitigating Features


製品の特定バージョンの最新供給状況はこちらでご確認ください。

説明

The MAX20056B is a 6-channel LED driver that integrates a DC-DC switching boost/SEPIC controller and six 120mA current sinks. A current-mode switching DC-DC controller provides the necessary voltage to the strings of HB LEDs.

An internal current-mode switching DC-DC controller supports boost, SEPIC, or coupled-inductor buck-boost topologies and operates in a programmable frequency range between 400kHz and 2.2MHz. Current-mode control provides fast response and simplifies loop compensation. An adaptive output-voltage-adjustment scheme minimizes power dissipation in the LED current sinks.

An external resistor sets the channel currents to the same value in the range of 20mA to 120mA. The device features logic-controlled pulse-width modulation (PWM) dimming with minimum pulse widths as low as 500ns, and either phase-shifted LED strings or standard dimming control. When phase shifting is enabled, each string is turned on at a different time, reducing the input and output ripple, as well as audible noise. With phase shifting disabled, each current sink is turned on at the same time and allows parallel connection of current sinks for > 120mA per string.

主な特長

  • Robust with Respect to EMC and Automotive Battery Transients
    • Wide 4.5V to 42V Input Operating Range Powers HB LEDs for Medium-to-Large-Sized LCD Displays in Automotive and Display Backlight Applications
    • Withstands Automotive Load-Dump Events Up to 52V
    • Integrated Spread Spectrum
  • Spread-Spectrum Mode Reduces Emission at the Switching Frequency and its Harmonics
    • EMI Reduction Features Include Spread-Spectrum Modulation (±6% of the Switching Frequency Set by a Resistor Connected Between RT and SGND)
  • Phase-Shift Dimming of LED Strings
    • Reduced Input and Output Ripple/Audible Noise
  • Wide Contrast Ratio Ideal for High-Quality TFT and Head-Up Displays
    • PWM Dimming Ratio of 10,000:1 at 200Hz
  • Robust with Respect to Temperature and Fault Conditions
    • LED-Open/Short Detection
    • Overtemperature Protection
    • Low Shutdown Current (< 15μA) through Enable Pin
    • Thermally Enhanced 24-Pin TSSOP Package
    • -40°C to +125°C AEC-Q100 compliance

アプリケーション/用途

  • 車載セントラルインフォメーションディスプレイ
  • 車載ダッシュボード
  • 車載ヘッドアップディスプレイ
  • 車載用ナビゲーションシステム

MAX20056BEVKIT: Evaluation Kit for the MAX20056B

品質および環境データ

信頼性レポートをリクエスト: MAX20056B 
鉛フリーパッケージの錫(Sn)のウィスカレポート
デバイス   ウェハープロセス   プロセス技術   サンプルサイズ   不合格   FIT (25°C)   FIT (55°C)  

注: 不良率はプロセス技術ごとにまとめられ、関連する型番にマッピングされます。 不良率はテストされたユニット数に大きく依存します。

品質管理システム >
環境管理システム >

 
Status:
Package:
Temperature:

関連リソース


MAX20056B
Integrated, 6-Channel High-Brightness LED Driver with Very Wide PWM Dimming Ratio and Phase Shifting for Automotive Displays

  • Robust with Respect to EMC and Automotive Battery Transients
  • Spread-Spectrum Mode Reduces Emission at the Switching Frequency and its Harmonics
  • Phase-Shift Dimming of LED Strings

MAX25612
車載同期整流高電圧LEDコントローラ

  • 高集積によって部品数およびコストを最小化
  • 効率、基板スペース、および入力動作範囲の最適化が簡単
  • 保護機能によってシステムの信頼性を向上

MAX25600
同期整流高電圧4スイッチバックブーストLEDコントローラ

  • 車載対応:AEC-Q100認定
  • 高集積によって高輝度LEDドライバの部品数を最小化、スペースを節約しコストを削減
  • 広い調光比によって高コントラスト比が可能

MAX25615EVKIT
MAX25615の評価キット

  • 単一電源範囲:+4V~+16V
  • ピークシンク電流:7A
  • ピークソース電流:3A

MAX25615
7Aシンク、3Aソース、12ns、SOT23 MOSFETドライバ

  • 車載対応:AEC-Q100認定
  • 個別のソースおよびシンク出力
  • 単一電源範囲:+4V~+15.5V

種類 ID タイトル
評価ボード10342MAX20056BEVKIT Evaluation Kit for the MAX20056B