WMSIC Electronic Components

GR TL432

ModelTL432
PackageSOT-23
BrandGR
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
GR TL432
Type
GR
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
GR
Electronic Component
TL432
Electronic Component
1
Package
SOT-23
Electronic Component
Voltage Reference IC
Electronic Component
±2%
Electronic Component
0.02g
Electronic Component
1
Electronic Component
BM0264555456
Operating Temperature
0℃~+80℃
Operating Voltage
1.3V~19V
Electronic Component
80ppm/℃
Output Voltage
1.25V~18V
Output Current
100mA
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.

GR国睿TL432并联电压基准产品概述

一、产品定位与核心价值

GR国睿TL432是一款可调并联电压基准,属于TL431系列的小电流优化版本,针对轻载场景(≤100mA)设计,主打宽电压覆盖、高精度稳定、小体积适配三大核心价值。作为国产可靠品牌器件,它广泛替代进口同类产品,适用于消费电子、工业控制、通信设备等领域的电压调节、基准参考、保护电路等场景。

二、关键电气参数深度解析

TL432的参数设计精准匹配轻载需求,核心参数可归纳为三类:

1. 电压与电流范围

  • 工作电压:1.3V~19V(覆盖常见直流电源电压,如3.3V、5V、12V系统);
  • 输出电压:1.25V~18V(输出由外部分压电阻决定,核心基准电压约1.25V,可通过电阻灵活调整);
  • 最大输出电流:100mA(适合单片机供电监测、小功率稳压等轻载应用,不建议带重负载)。

2. 精度与温度特性

  • 初始精度:±2%(常温下输出电压误差控制在2%以内,满足多数中低端精密需求);
  • 温度系数:80ppm/℃(温度每变化1℃,输出电压变化百万分之八十;例如1.25V基准在10℃温差下仅变化1mV,稳定性优于普通稳压管)。

3. 工作稳定性要求

  • 最小阴极电流:1mA(并联基准必须保证阴极电流≥1mA才能进入稳压区,否则输出会随负载波动,设计时需通过电阻计算满足此条件)。

三、封装与环境适应性

TL432采用SOT-23封装(3引脚表面贴装),尺寸仅约2.9×1.6×1.1mm,适配智能手机、智能穿戴、小型电源模块等紧凑空间;工作温度范围为0℃~+80℃(商业级温度,满足大多数消费电子和低温度工业场景需求)。

GR国睿作为国内半导体品牌,产品符合RoHS环保标准,可靠性经批量市场验证,可直接替换进口TL432。

四、典型应用场景

TL432的灵活性使其可覆盖5类核心场景:

1. 开关电源电压反馈

配合光耦实现隔离反馈,稳定开关电源输出电压(如5V/12V电源的电压调节,避免负载波动导致输出偏移)。

2. 可调稳压电路

外接两个分压电阻(R1、R2),通过公式 ( V_{out}=1.25V \times (1+R1/R2) ) 实现可调输出(例如1.5V~12V可调,适合实验设备、小功率负载)。

3. 过压/欠压保护

配合运算放大器,当输出电压超过/低于设定阈值时触发保护(如锂电池充电过压保护,防止电池过充损坏)。

4. ADC/DAC基准参考

作为10~12位ADC/DAC的参考电压(如智能电表的电压采样基准,满足中精度测量需求)。

5. 电池电压监测

监测电池电压,当电压低于阈值时触发低电量报警(如智能手表电池电压监测,提醒用户充电)。

五、使用注意事项与选型建议

为保证TL432稳定工作,需注意以下要点:

  1. 最小阴极电流计算:需通过阴极电阻 ( R=(V_{cc}-V_{ref})/I_{min} ) 保证电流≥1mA(例如Vcc=5V时,R≈3.75kΩ);
  2. 负载限制:避免带超过100mA的负载,若需大负载需外接功率管扩展;
  3. 引脚定义:SOT-23封装引脚顺序为「1阴极、2参考极、3阳极」,焊接时切勿接反;
  4. 温度补偿:若场景温度变化大(±10℃以上),可外接热敏电阻补偿温度系数,提高输出稳定性;
  5. 兼容替换:可直接替换TI、ON等品牌TL432,引脚功能一致,无需重新设计电路。

GR TL432凭借高性价比、小体积和稳定性能,成为轻载电压基准场景的主流选择,广泛应用于消费电子、工业控制等领域。

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