WMSIC Electronic Components

MICRONE ME431ATBG

ModelME431ATBG
PackageTO-92-3
BrandMICRONE
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 Date code within 2 years

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
MICRONE ME431ATBG
Type
MICRONE
Minimum package
2000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
MICRONE
Electronic Component
ME431ATBG
Electronic Component
1
Package
TO-92-3
Electronic Component
Voltage Reference IC
Electronic Component
±0.4%
Electronic Component
0.24g
Electronic Component
1
Electronic Component
BM0227656168
Operating Temperature
40℃~+125℃
Operating Voltage
2.5V~36V
Electronic Component
20ppm/℃
Output Voltage
2.5V~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.

ME431ATBG 产品概述

一、产品简介

ME431ATBG 是南京微盟(MICRONE)推出的一款高精度、可调式基准源/稳压基准芯片,采用 TO-92-3 封装,适合要求体积小、精度高的模拟与电源设计。器件工作电压范围宽(2.5V~36V),输出电压亦可在 2.5V~36V 范围内可调,输出电流可达 100mA,能够满足多种单芯片基准和小功率稳压应用的需求。

二、主要性能与参数

  • 输出类型:可调式基准/稳压
  • 工作温度:-40℃ ~ +125℃
  • 温度系数:20 ppm/℃(典型)
  • 精度:±0.4%
  • 输出电流:最高 100 mA
  • 最低维持调节电流(阴极/参考最低工作电流):400 µA(低于该值可能无法保证稳压)
  • 工作/输出电压范围:2.5V ~ 36V
  • 封装:TO-92-3

三、特点与优势

  • 高精度:±0.4% 初始精度,适合对稳压基准精度有较高要求的场景。
  • 低温漂:20 ppm/℃ 的温度系数,在宽温度范围内保持输出稳定性。
  • 大电流能力:最高可提供 100 mA 输出电流,适合驱动小负载或作为参考源配合后级稳压。
  • 宽电压工作范围:2.5V 起始工作,最高可承受 36V,便于在多种电源方案中使用。
  • 小封装:TO-92-3 封装便于快速样机验证与低成本应用。

四、典型应用场景

  • 精密基准源:ADC/DAC 的参考电压源。
  • 可调线性稳压:与外接分压电阻配合形成精密可调输出。
  • 电池管理与充电控制的比较/参考节点。
  • 工业控制与传感器供电,尤其要求宽温度稳定性的场合。
  • 通用电子设备中替代小功率线性稳压器或用于基准/基线校准。

五、使用与设计建议

  • 输出设置:作为可调基准时,通常用两个外接电阻构成分压器,输出电压近似由下列关系决定:VOUT = VREF × (1 + R1/R2) + IADJ × R1(其中 R1 为输出到参考端的电阻,IADJ 为参考端电流,实际设计中考虑 IADJ 引起的小偏差)。
  • 最小工作电流:确保流过器件的最小电流不低于 400 µA,以维持调节精度;在作为稳压器使用时要为其提供适当的偏置电流。
  • 散热与功耗:器件功耗约等于器件两端的电压降乘以流经器件的电流。高差压或高电流工况下应注意器件结温上升,必要时限流或选择外部散热措施。
  • 布局建议:参考端和外接分压电阻应靠近芯片参考脚布局,减小引线及走线阻抗与干扰;输入侧建议并联旁路电容以抑制高频噪声与瞬态。

六、选型与注意事项

  • 若系统需更高输出电流或更低封装热阻,则可考虑更大功率封装或外部串联功率器件。
  • 在高工作电压或大电流场合,务必核算器件实际功耗与结温,避免长期在极限条件下运行。
  • 在精密测量应用中,测试与校准时要考虑器件老化与环境漂移对长期精度的影响。

ME431ATBG 凭借其高精度、低温漂和宽电压工作范围,适合多种中低功率精密基准与可调稳压场合。用户在设计时应关注最小工作电流与散热条件,以保证长期稳定可靠的性能表现。

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