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TL431AM/TR是华冠半导体(HGSEMI)推出的可调并联电压基准芯片,属于经典TL431系列的优化型号,专为中小功率电子设备的精准电压控制场景设计。其核心特性可总结为“宽范围、高精度、易应用”:支持2.5V36V的输出电压连续可调,覆盖从低压基准到高压控制的全场景;具备±1%的输出精度,满足大多数工业及消费电子的精准需求;同时兼容宽温工作环境(-25℃+125℃),适配 harsh 工况下的稳定运行。
TL431AM/TR的核心参数针对性强,适配多场景需求:
TL431AM/TR采用SOP-8贴片封装,体积小巧(7.8mm×5.9mm×1.6mm),适配自动化贴装生产线,且散热性能良好。其典型应用场景包括:
华冠半导体作为国内成熟的功率器件厂商,TL431AM/TR经过严格的可靠性测试:
以开关电源反馈回路为例:
将TL431AM/TR的参考端(REF) 接输出电压的分压电阻(R1、R2),阴极(CATHODE) 接光耦的发射极,阳极(ANODE) 接地;光耦的集电极接初级PWM控制器的反馈端。当输出电压升高时,REF端电压超过2.5V基准,TL431导通程度增加,阴极电流增大,光耦导通增强,PWM控制器降低占空比,输出电压回落;反之则提升占空比,实现输出电压稳定。该电路中,TL431的400uA最小阴极电流保证了轻负载下(如待机状态)仍能稳定反馈,避免电压波动。
TL431AM/TR凭借其宽范围可调、高精度、宽温适配等特性,成为中小功率电子设备中电压控制的首选基准芯片之一,适用于工业、汽车、消费电子等多领域。
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WMSIC turns product data, package visuals, BOM context, and sourcing signals into practical RFQ notes for buyers.
Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.
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