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    首頁產(chǎn)品索引NCP431

    NCP431

    購買收藏
    ?Voltage Reference, Low Cathode Current, Programmable, Shunt Regulator

    制造商：ON

    中文數(shù)據(jù)手冊

    產(chǎn)品信息

    The NCP431 integrated circuits are three-terminal programmable shunt regulator diodes. They are a direct upgrade to the industry standard TL431A. These monolithic IC voltage references operate as a low temperature coefficient zener which is programmable from Vref to 36 V using two external resistors. These devices exhibit a wide operating current range of 40 μA to 100 mA with a typical dynamic impedance of 0.22Ω. The characteristics of these references make them excellent replacements for zener diodes in many applications such as digital voltmeters, power supplies, and op amp circuitry. The 2.5 V reference makes it convenient to obtain a stable reference from 5.0 V logic supplies, and since the NCP431 operates as a shunt regulator, it can be used as either a positive or negative voltage reference. Low minimum operating current makes this device an ideal choise for secondary regulators in SMPS adapters with extremely low no-load consumption.
    The NCP432 has exactly the same functionality and electrical specifications as the NCP431, but has an alternate pin configuration.
    • Low Minimum Operating Current: 40 uA, Typ @ 25C
    • Voltage Reference Tolerance: 1%, Typ @ 25C
    • Programmable Output Voltage to 36 V
    • Low Dynamic Output Impedance, 0.22ohm Typical
    • Temperature Compensated for Operation over Full Rated Operating
    • Temperature Range
    • Equivalent FullRange Temperature Coefficient of 50 ppm/C
    • Typical
    • NCP431 is pin compatible to the TL432
    • NCP432 is pin compatible to the TL431

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    型號制造商描述購買
    NCP431BCSNT1GON電壓參比，低陰極電流，可編程，分路穩(wěn)壓器 立即購買
    NCP431AILPRAGONNCP431 集成電路為三端子可編程分路穩(wěn)壓器二極管。此類集成電路是行業(yè)標(biāo)準(zhǔn)的 TL431A 的直接升級產(chǎn)品。此類單片集成電路電壓參考作為低溫度系數(shù)齊納運行，配合兩個外部電阻可從 Vref 至 36 V 進(jìn)行編程。此類器件具有較寬的運行電流范圍 40 ?A 至 100 mA，典型動態(tài)阻抗為 0.22Ω。此類參比的特性使其成為很多應(yīng)用中齊納二極管的絕佳替代器件，如數(shù)字電壓計、電源和運算放大器電路。2.5 V 參考使其能夠從 5.0 V 邏輯電源方便地獲取穩(wěn)定參考，因為 NCP431 作為分路穩(wěn)壓器運行，所以既可用作正電壓參考也可用作負(fù)電壓參考。較低的最小運行電流使得此器件成為 SMPS 適配器中輔助穩(wěn)壓器的絕佳選擇，且無負(fù)載功耗極低。NCP432 與 NCP431 具有完全相同的共嚙合電氣規(guī)格，只是引腳配置不同。 立即購買
    NCP431AVLPGONNCP431 集成電路為三端子可編程分路穩(wěn)壓器二極管。此類集成電路是行業(yè)標(biāo)準(zhǔn)的 TL431A 的直接升級產(chǎn)品。此類單片集成電路電壓參考作為低溫度系數(shù)齊納運行，配合兩個外部電阻可從 Vref 至 36 V 進(jìn)行編程。此類器件具有較寬的運行電流范圍 40 ?A 至 100 mA，典型動態(tài)阻抗為 0.22Ω。此類參比的特性使其成為很多應(yīng)用中齊納二極管的絕佳替代器件，如數(shù)字電壓計、電源和運算放大器電路。2.5 V 參考使其能夠從 5.0 V 邏輯電源方便地獲取穩(wěn)定參考，因為 NCP431 作為分路穩(wěn)壓器運行，所以既可用作正電壓參考也可用作負(fù)電壓參考。較低的最小運行電流使得此器件成為 SMPS 適配器中輔助穩(wěn)壓器的絕佳選擇，且無負(fù)載功耗極低。NCP432 與 NCP431 具有完全相同的共嚙合電氣規(guī)格，只是引腳配置不同。 立即購買
    NCP431AVLPRAGON電壓參比，低陰極電流，可編程，分路穩(wěn)壓器 立即購買
    NCP431AIDR2GON 立即購買
    NCP431AVDR2GON電壓參比，低陰極電流，可編程，分路穩(wěn)壓器 立即購買

    技術(shù)資料

    標(biāo)題類型大?。↘B）下載
    NCP1251: 20 W Output Offline Power SupplyPDF101 點擊下載
    Programmable Precision ReferencesPDF470 點擊下載
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