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    首頁(yè)產(chǎn)品索引CAT4238

    CAT4238

    購(gòu)買(mǎi)收藏
    ?LED Driver, Boost Converter, High Efficiency

    制造商:ON

    中文數(shù)據(jù)手冊(cè)

    產(chǎn)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

    電路圖、引腳圖和封裝圖

    在線購(gòu)買(mǎi)

    型號(hào)制造商描述購(gòu)買(mǎi)
    CAT4238TD-GT3ON 立即購(gòu)買(mǎi)

    技術(shù)資料

    標(biāo)題類(lèi)型大?。↘B)下載
    CAT4238AGEVB Test ProcedurePDF54 點(diǎn)擊下載
    TSOT-23. 5 LeadPDF53 點(diǎn)擊下載
    LED Driver, Boost, 10 LED, seriesPDF127 點(diǎn)擊下載
    CAT4238_PD.GIFUNKNOW19 點(diǎn)擊下載
    CAT4238_AD.GIFUNKNOW17 點(diǎn)擊下載
    CAT4238 10-LED Boost Converter Evaluation Board User"s ManualPDF210 點(diǎn)擊下載
    CAT4238AGEVB Bill of Materials ROHS CompliantPDF83 點(diǎn)擊下載
    CAT4238AGEVB Gerber Layout Files (Zip Format)RAR37 點(diǎn)擊下載

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