WMSIC Electronic Components

HGSEMI TL431AM/TR TL431AM

ModelTL431AM/TR
PackageSOP-8
BrandHGSEMI
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
HGSEMI TL431AM / TR
Type
HGSEMI
Minimum package
2500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
HGSEMI
Electronic Component
TL431AM/TR
Electronic Component
1
Package
SOP-8
Electronic Component
Voltage Reference IC
Electronic Component
±1%
Electronic Component
0.246g
Electronic Component
1
Electronic Component
BM0265276237
Operating Temperature
25℃~+125℃
Operating Voltage
2.5V~36V
Output Voltage
2.5V~36V
Output Current
100mA
Output Type
Electronic Component
Electronic Component
Electronic Component

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

TL431AM/TR 可调并联电压基准产品概述

一、产品定位与核心特性

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。

二、关键参数详解

TL431AM/TR的核心参数针对性强,适配多场景需求:

  • 输出类型:并联基准(区别于串联基准的高压降特性),无需额外高压差即可实现宽范围调节;
  • 工作/输出电压范围:2.5V~36V,输出电压可通过外接分压电阻精准设置,且输入电压范围与输出重叠,简化电路设计;
  • 输出电流:最大100mA,可直接驱动中小功率负载(如仪表显示、LED驱动等),无需额外功率管;
  • 精度:±1%(典型值),在工业级应用中可满足电压反馈、基准参考的精度要求;
  • 最小阴极电流:400uA,保证芯片在轻负载下仍能稳定工作,避免因电流不足导致的基准漂移;
  • 工作温度:-25℃~+125℃,符合工业级温度标准,可用于户外设备、车载电子等温差较大的场景。

三、封装与应用场景

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:

  1. 开关电源电压反馈:替代传统稳压管+光耦的组合,通过分压电阻调节输出电压,提升电源稳定性;
  2. 线性电源基准参考:为线性稳压器提供精准2.5V基准(默认基准电压),优化输出精度;
  3. 电池充电控制:用于锂电池、铅酸电池的充电截止电压检测,实现恒压充电的精准控制;
  4. 仪器仪表基准:为万用表、示波器等测试设备提供稳定电压基准,提升测量精度;
  5. LED驱动恒压控制:配合LED驱动电路,实现小功率LED串的恒压供电,避免光衰。

四、华冠半导体(HGSEMI)品质保障

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:

  • 符合AEC-Q100(车载级)及工业级标准,通过ESD(静电放电)、温度循环、湿度老化等测试;
  • 封装一致性好,批量供货稳定性高,可满足汽车电子、工业控制等领域的批量需求;
  • Datasheet提供详细的应用电路及参数曲线,方便工程师快速设计。

五、典型应用示例

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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