WMSIC Electronic Components

Hottech TL432

ModelTL432
PackageSOT-23
BrandHottech
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 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
Hottech TL432
Type
HOTTECH
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
HOTTECH
Electronic Component
TL432
Electronic Component
1
Package
SOT-23
Electronic Component
Voltage Reference IC
Electronic Component
±1%;±2%
Electronic Component
0.038g
Electronic Component
1
Features
Built-in Output
Electronic Component
BM0264463955
Operating Temperature
0℃~+70℃
Operating Voltage
1.25V~15V
Electronic Component
50ppm/℃
Output Voltage
1.25V~15V
Output Current
50mA

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

Hottech(合科泰)TL432 可调并联稳压器 产品概述

一、产品简介

TL432 是一款三端可调并联(shunt)稳压器,集成高精度带隙电压基准与输出缓冲,基准电压为 1.25V。该器件提供 ±1% 与 ±2% 两档精度选择,适用于基准源、可调稳压、误差放大与开关电源反馈等场合。器件以 SOT-23 小封装提供,适合空间受限的消费或工业类电源设计。

二、主要规格

  • 输出类型:可调并联(可调输出 1.25V ~ 15V)
  • 基准电压:1.25V(带隙)
  • 输出电流能力:最高可承受 50mA(作为并联稳压元件)
  • 精度等级:±1% / ±2%(型号区分)
  • 温度系数:典型 50 ppm/℃
  • 最小阴极(Cathode)工作电流:600 µA(维持调节所需最小电流)
  • 工作电压/可调范围:1.25V ~ 15V
  • 功能特性:内置输出缓冲,提高稳定性与瞬态响应
  • 工作温度:常规等级 0℃ ~ +70℃;部分型号或扩展等级可达 0℃ ~ +105℃
  • 封装:SOT-23(小体积,便于表贴组装)
  • 品牌:Hottech(合科泰)

三、典型应用

  • 开关电源(SMPS)或线性电源的电压基准与误差放大器
  • 可调稳压输出(低功耗系统)
  • 电池管理与电源监测
  • 精密比较器的参考电压源
  • 光耦隔离反馈闭环中的参考与放大单元

四、使用与设计要点

  • 输出设置公式:VOUT = VREF × (1 + R1/R2) + IREF × R1。通常 IREF 很小,当分压电流远大于 IREF 时可忽略 IREF 项。
  • 为保证器件稳定工作,阴极电流(包括通过分压网络或外接电流)不得低于 600 µA;建议分压器总电流选在 0.6 mA ~ 2 mA 范围。
    • 举例:若目标 VOUT = 5.00V,R1/R2 = (5/1.25) - 1 = 3。若选 R2 = 1 kΩ,则 R1 = 3 kΩ,总分压电流约 5V/4kΩ = 1.25 mA,满足最小阴极电流要求。
  • 功率与散热:作为并联稳压器时,器件承受的功耗为 (VIN - VOUT) × IK,其中 IK 为流经器件的电流。大电压差或高电流条件下需注意封装散热,必要时加上散热垫或降低工作电流以避免自热失调。
  • 稳定性与旁路:内置输出缓冲改善了驱动能力,但在需要连接较大电容或感性负载时,应参考应用笔记选择适当的输出电容与旁路元件以保证相位裕度。

五、封装与选型建议

  • 推荐封装:SOT-23,便于表面贴装与批量生产。
  • 选型要点:根据对温度范围、精度等级与最大允许耗散电流的需求,选择相应的 ±1% / ±2% 型号与常规/扩展温度等级。若设计在高温或高功耗环境下长时间工作,优先选用扩展温度或外加热管理措施的方案。

六、优势与注意事项

  • 优势:高精度(最高 ±1%)、低温漂(约 50 ppm/℃)、输出缓冲与小体积封装使其在精密参考与反馈环路中表现优良。
  • 注意事项:务必确保阴极最小电流 600 µA 以维持稳定调节,关注功耗与散热限制;在设计分压网络时同时兼顾功耗与抗干扰能力。

总结:Hottech TL432 在小封装下提供精确可靠的带隙基准与并联稳压功能,适合多种电源管理与基准应用。正确选型与合理的分压、散热设计可以充分发挥其精度与稳定性优势。

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