WMSIC Electronic Components

TECH PUBLIC TL431

ModelTL431
PackageSOT-23-3
BrandTECH PUBLIC
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
TECH PUBLIC TL431
Type
TECH PUBLIC
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
TECH PUBLIC
Electronic Component
TL431
Electronic Component
1
Package
SOT-23-3
Electronic Component
Voltage Reference IC
Electronic Component
±1%
Electronic Component
0.03g
Electronic Component
1
Features
Electronic Component
Electronic Component
BM0264777489
Operating Temperature
40℃~+85℃
Electronic Component
50ppm/℃
Output Voltage
2.47V~36V
Output Current
150mA
Output Type
Electronic Component

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

TECH PUBLIC (台舟电子) TL431 可调精密并联基准概述

一、产品简介

TECH PUBLIC(台舟电子)推出的TL431系列可调精密并联基准,提供2.47V ~ 36V的可调输出范围,输出电流最高可达150mA。器件采用SOT-23-3小封装,面向需要高精度、低噪声和温度补偿的参考与调节场合。全温度范围(-40℃ ~ +85℃)内保持优秀的温度系数与稳定性,适合工业级应用。

二、主要特性

  • 输出电压可调:2.47V ~ 36V(通过外部分压电阻设定)
  • 精度:±1%(典型)
  • 等效温度系数:典型50 ppm/℃,并内置温度补偿控制
  • 最小阴极调节电流:1mA(推荐工作点)
  • 输出电流能力:最高150mA,典型调节/捕获范围1 ~ 100mA
  • 低动态输出阻抗:典型0.2Ω(提高负载变化时的稳压性能)
  • 低噪声、快速导通响应
  • 封装:SOT-23-3,便于小体积布局

三、典型应用

  • 精密基准源与可调稳压
  • 开关电源反馈与误差放大器替代件
  • LED驱动、恒流源与电池充电控制
  • 仪表放大与数据采集系统参考电压
  • 工业控制与温度补偿电路

四、使用要点与设计建议

  • 设定输出电压:常用公式 Vout = Vref × (1 + R1/R2) + Iref × R1。器件参考端电流Iref虽小但在高阻值分压时需考虑其影响。
  • 最小工作电流:为保证稳定调节,应保证阴极电流 ≥ 1mA;在轻载或待机场景加并联下拉或选用高阻抗电路设计以维持最低电流。
  • 峰值与持续电流:SOT-23-3封装下持续取150mA时需注意封装散热,长时间接近最大电流建议使用外部功率晶体或散热措施。
  • 稳定性与旁路电容:输入/参考端并联低ESR电容可减少噪声并抑制振荡;在高增益或长引线应用应测量并确认环路稳定性。
  • 最高电压限制:器件最大耐压至36V,超过该值会损伤器件,设计时需保证峰值与浪涌保护。

五、选型与可靠性提示

  • 若系统需更高输出电流或更好散热,应选择带外置功率晶体管的方案或更大封装型号。
  • 在高精度应用中,配套使用低温漂电阻并留意环境温度梯度,可发挥50 ppm/℃典型温漂优势。
  • PCB布线建议:短而粗的电源与地线,参考端靠近器件布置,减少噪声耦合。

总结:TECH PUBLIC TL431(SOT-23-3)在小体积下提供高精度、低噪声与全温度范围温度补偿的并联基准解决方案,适合多种工业与消费电子场景。合理的散热与偏置电流设计能够确保器件长期稳定工作并发挥其典型0.2Ω低动态输出阻抗与50 ppm/℃的温漂性能。

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