WMSIC Electronic Components

MSKSEMI AZ431AN-ATRG1-MS AZ431AN

ModelAZ431AN-ATRG1-MS
PackageSOT-23
BrandMSKSEMI
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
MSKSEMI AZ431AN-ATRG1-MS
Type
MSKSEMI
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
MSKSEMI
Electronic Component
AZ431AN-ATRG1-MS
Electronic Component
1
Package
SOT-23
Electronic Component
Voltage Reference IC
Electronic Component
±1%
Electronic Component
0.036g
Electronic Component
1
Electronic Component
BM0264464047
Operating Temperature
25℃~+85℃
Operating Voltage
2.5V
Electronic Component
50ppm/℃
Output Voltage
36V
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.

AZ431AN-ATRG1-MS 可调并联电压基准产品概述

一、产品核心定位与应用场景

AZ431AN-ATRG1-MS是MSKSEMI(美森科)推出的工业级可调并联电压基准器件,针对中小功率电路对“精度稳定、宽温适应、灵活可调”的需求设计,核心定位为替代传统固定基准(如TL431)的高性价比方案。其典型应用场景覆盖三大领域:

  1. 模拟信号采集:为工业PLC、传感器模块的ADC/DAC提供稳定参考电压,提升温度、压力等模拟量的采集精度;
  2. 电源系统优化:作为线性稳压/开关电源的基准端,修正输出电压误差,或用于电池管理系统(BMS)的电压监控与均衡;
  3. 小型化设备:SOT-23小封装适配便携式仪器、智能家电、车载电子(-25~85℃宽温符合车载级部分要求)等紧凑空间设计。

二、关键性能参数深度解析

该产品的核心参数围绕“高精度、宽可调、低功耗”设计,关键参数及实际意义如下:

  • 并联可调结构:区别于串联基准,采用阴极-阳极并联拓扑,通过外部分压电阻即可实现输出电压灵活调节,无需专用编程工具;
  • 参考与输出范围:内置2.5V典型基准电压,输出电压可调至36V最大值,覆盖从2.5V(低电压基准)到30V(中高压应用)的常见需求;
  • 精度与温度稳定性:初始精度±1%(满足工业级基本精度要求),温度系数50ppm/℃(即温度每变化1℃,输出电压变化0.005%),在-25~85℃宽温范围内保持输出稳定;
  • 电流特性:最大输出电流100mA(可直接驱动中小功率负载,如运放、ADC),最小阴极工作电流1mA(保证低功耗场景下的稳定工作,如电池供电的物联网终端);
  • 工作电压适配:需保障阴极与阳极的电压差满足需求,实际工作电压范围适配其输出与电流能力。

三、封装与可靠性设计优势

  1. SOT-23小封装:尺寸约2.9×2.5×1.1mm,占用PCB面积仅为传统TO-92封装的1/5,支持表面贴装(SMT)工艺,提升高密度布局效率;
  2. 宽温可靠性:工作温度范围-25℃~+85℃,通过工业级高低温循环、振动试验,可在户外设备、高温车间等极端环境下长期稳定运行;
  3. 抗干扰能力:并联结构对电源纹波的抑制能力较强,配合0.1μF滤波电容可进一步降低输出噪声(典型噪声<10μV),提升基准纯度;
  4. 低功耗设计:最小工作电流1mA,对比传统固定基准无额外功耗浪费,适合低功耗系统(如电池供电的传感器节点)。

四、典型应用电路示例

示例1:工业PLC ADC参考电路

  • 电路组成:AZ431AN-ATRG1-MS + 分压电阻R1(10kΩ)、R2(20kΩ) + 0.1μF滤波电容;
  • 工作原理:阳极接系统地,阴极通过R1接5V电源,R2接ADC参考输入(Vref+),则输出电压Vout=2.5V×(1+R2/R1)=7.5V(需调整可更换R2);
  • 优势:对比ADC内部基准(精度±2%~±5%),该方案精度提升至±1%,温度稳定性提升3倍以上,有效降低模拟量采集误差。

示例2:可调稳压电源

  • 电路组成:AZ431AN-ATRG1-MS + 运放(如LM358) + 功率管(如2N3904) + 分压电阻;
  • 工作原理:通过运放反馈调节功率管输出,基准电压由AZ431提供,可实现0~36V高精度可调稳压,输出电流可达1A(需外接功率管扩展);
  • 优势:适合实验室电源、工业设备供电,精度远高于普通线性稳压器(如78xx系列)。

五、应用注意事项

  1. 阴极电流保障:设计时需计算分压电阻,确保阴极电流≥1mA(如电源电压5V,R1需≤2.5kΩ,否则电流不足导致输出不稳定);
  2. 温度补偿优化:若对精度要求高于±1%,可在分压电阻中串联NTC热敏电阻(温度系数匹配),进一步降低温度漂移;
  3. 负载限制:最大输出电流100mA,若负载电流超过此值,需外接功率管或限流电阻,避免器件过热损坏;
  4. 引脚极性与焊接:SOT-23封装引脚通常为“1-阳极(A)、2-参考(R)、3-阴极(K)”,需注意焊接方向,反接会导致器件烧毁。

六、品牌与选型建议

MSKSEMI(美森科)作为国内半导体厂商,该产品经过工业级可靠性测试,质量稳定。若需更高精度(如±0.5%)或更低温度系数(如30ppm/℃),可选择同系列升级型号;若需大电流(>100mA),需搭配外部驱动电路扩展输出能力。

该产品凭借“高精度、宽可调、小封装、宽温适应”的特点,成为工业控制、电源系统、小型化设备的优选基准器件。

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