首页产品索引CAT4238

    CAT4238

    购买收藏
     LED Driver, Boost Converter, High Efficiency

    制造商:ON

    中文数据手册

    产品信息

    The CAT4238 is a DC-DC step-up converter that delivers an accurate constant current ideal for driving LEDs. Operation at a fixed switching frequency of 1 MHz allows the device to be used with small value external ceramic capacitors and inductor. LEDs connected in series are driven with a regulated current set by the external resistor R1. LED currents up to 40 mA can be supported over a wide range of input supply voltages up to 5.5 V, making the device ideal for battery-powered applications. The CAT4238 high-voltage output stage is perfect for driving mid-size and large panel displays containing up to ten white LEDs in series.
    LED dimming can be done by using a DC voltage, a logic signal, or a pulse width modulation (PWM) signal. The shutdown input pin allows the device to be placed in power-down mode with 'zero' quiescent current.
    In addition to thermal protection and overload current limiting, the device also enters a very low power operating mode during 'Open LED' fault conditions.
    • Drives High Voltage LED strings (38 V)
    • Up to 87% Efficiency
    • Low Quiescent Ground Current 0.6 mA
    • Adjustable Output Current
    • 1 MHz Fixed Frequency Low noise Operation
    • Soft start “in-rush” current limiting
    • Shutdown current less than 1 µA
    • Open LED Overvoltage Protection
    • Automatic Shutdown at 1.9 V (UVLO)
    • Thermal overload protection
    • Mid-size and Large Panel Displays

    电路图、引脚图和封装图

    在线购买

    型号制造商描述购买
    CAT4238TD-GT3ONIC LED DRIVER RGLTR DIM TSOT23-5 立即购买

    技术资料

    标题类型大小(KB)下载
    CAT4238AGEVB Test ProcedurePDF54 点击下载
    TSOT-23. 5 LeadPDF53 点击下载
    LED Driver, Boost, 10 LED, seriesPDF127 点击下载
    CAT4238_PD.GIFUNKNOW19 点击下载
    CAT4238_AD.GIFUNKNOW17 点击下载
    CAT4238 10-LED Boost Converter Evaluation Board User"s ManualPDF210 点击下载
    CAT4238AGEVB Bill of Materials ROHS CompliantPDF83 点击下载
    CAT4238AGEVB Gerber Layout Files (Zip Format)RAR37 点击下载

    应用案例更多案例

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