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    首頁產(chǎn)品索引MIC4811

    MIC4811

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    High Current Six Channel WLED Driver w/ DAM and Ultrafast PWM Control

     

    產(chǎn)品信息

    The MIC4811 is a high efficiency linear White LED (WLED) driver designed to drive up to six high current WLEDs for signage lighting. The MIC4811 provides the highest possible efficiency as this architecture has no switching losses present in traditional charge pumps or inductive boost circuits. The MIC4811 provides six linear drivers which maintain constant current for up to six WLEDs. It features a typical dropout of 100mV at 50mA.

    The MIC4811 features Dynamic Average Matching? (DAM?) which is specifically designed to provide optimum matching across all WLEDs. The high accuracy (±1% typical) current regulated WLED channels ensure uniform display illumination under all conditions. The brightness is controlled through an Ultra Fast PWM? interface operating down to less than 1% duty cycle.

    The MIC4811 is available in a 10-pin MSOP package with a junction temperature range of -40°C to +125°C

      High efficiency (no voltage boost losses)

      Ultra Fast PWM? control (200Hz to 500kHz)

      Input voltage range: 3.0V to 5.5V

      LED current range up to 50mA per channel

      Programmable LED current with external resistor

      Dropout of 100mV at 50mA

      Matching better than ±1% (typical)

      Current accuracy better than ±1% (typical)

      Maintains proper regulation regardless of how many channels are utilized

      10-pin MSOP package

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    在線購買

    型號(hào)制造商描述購買
    MIC4811YMM-TRCX22UF/400V 10X17 立即購買
    MIC4811YMMMicrochip 立即購買

    技術(shù)資料

    標(biāo)題類型大小(KB)下載
    LM4811,pdf datasheet (Dual 105RAR555 點(diǎn)擊下載

    應(yīng)用案例更多案例

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