• <xmp id="kyama">
  • 帕智電子(上海)有限公司

    400 0800 882

    產品中心

    當前位置:首頁 > 產品中心 > 圣邦微 > LED驅動器 > 白光LED 驅動器 > SGM3144

    產品中心

    SGM3144

    6-Channel PWM Dimming Charge Pump White LED Driver
     
    6-Channel PWM Dimming Charge Pump White LED Driver
    GENERAL DESCRIPTION

    The SGM3144 is a high performance white LED driver. It integrates current sources and automatic mode selection charge pump. The part maintains the high efficiency by utilizing a 1×/1.5× fractional charge pump and low dropout current sources. The small equivalent 1× mode open loop resistance and ultra-low dropout voltage of current source extend the operating time of 1× mode and optimize the efficiency of Li-ion battery in white LED applications.

    The SGM3144 supports up to 6 white LEDs and regulates a constant current which the initial value can be set by an internal resistor. The part implements PWM dimming to adjust the brightness of LED. Users can easily configure the LED current from 0mA to 27mA by a digital PWM signal. SGM3144 can be turned off by EN pin. The operating voltage range is 2.7V to 5.5V. Internal soft-start circuitry effectively reduces the in-rush current while both start-up and mode transition.

    The SGM3144 is available in Green TQFN-3×3-16L package and is rated over the -40 to +85 temperature range.

    PIN CONFIGURATIONS

    14128380526514.png

    FEATURES
    • Input Voltage Range: 2.7V to 5.5V

    • Drives up to 6 LEDs at 27mA Each

    • PWM Dimming

    • High Efficiency by Fractional Conversion with 1× and 1.5× Modes

    • Switching Frequency: 0.93MHz

    • Regulated Output Current with ±4.8% Matching

    • Internal Soft-Start Limits Inrush Current

    • Low Input Ripple and Low EMI

    • Over-Current and Over-Temperature Protection

    • Under-Voltage Lockout with Hysteresis

    • Available in Green TQFN-3×3-16L Package

    APPLICATIONS

    Mobile Phone, DSC, MP3
    White LED Backlighting
    LCD Display Supply

    ORDERING INFORMATION
    Part NumberStatusPackagePinsPb-FreeTemp Range
    SGM3144YTQ16G/TRProductionTQFN-3×3-16L16Y-40℃ to +85℃Samples

    香港赛马资讯