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    首页产品索引CAT4137

    CAT4137

    购买收藏
     White LED Driver, CMOS Boost Converter

    制造商:ON

    中文数据手册

    产品信息

    The CAT4137 is a DC/DC step-up converter that delivers a regulated output current. Operation at a constant switching frequency of 1 MHz allows the device to be used with small value external ceramic capacitors and inductor.
    The device drives a string of white LEDs connected in series and provides the regulated current to control the LEDs with inherent uniform brightness and matching. An external resistor R1 sets the output current and allows up to 30 mA current to be supported over a wide range of input supply voltages from 2.2 V to 5.5 V, making the device ideal for battery-powered applications.
    LED dimming can be done by using a DC voltage, a logic signal, or a pulse width modulation (PWM) signal. The shutdown control 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. The device is housed in a low profile (1 mm max height) 5-lead thin SOT23 package for space critical applications.
    • Drives up to 5 White LEDs from 3V
    • Power Efficiency up to 87%
    • Low Quiescent Ground Current 0.1 mA
    • Adjustable Output Current (up to 30 mA)
    • High Frequency 1MHz Operation
    • “Zero” current shutdown mode
    • Operates down to 2 V (from two AA batteries)
    • Soft start power-up
    • Open LED low power mode
    • Automatic shutdown at 1.9 V (UVLO)
    • Thermal shutdown protection

    电路图、引脚图和封装图

    在线购买

    型号制造商描述购买
    CAT4137TD-GT3ONIC LED DRIVER RGLTR DIM TSOT23-5 立即购买

    技术资料

    标题类型大小(KB)下载
    TSOT-23. 5 LeadPDF53 点击下载
    White LED Driver, CMOS Boost ConverterPDF164 点击下载
    CAT4137_PD.GIFUNKNOW19 点击下载
    CAT4137_AD.GIFUNKNOW13 点击下载
    CAT4137AEVB Bill of MaterialsPDF153 点击下载
    CAT4137AEVB Gerber Layout Files (Zip Format)RAR35 点击下载
    CAT4137AEVB SchematicPDF168 点击下载
    CAT4137AEVB Test ProcedurePDF124 点击下载

    应用案例更多案例

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