WMSIC Electronic Components

MICROCHIP MCP111T-450E/TT MCP111T

ModelMCP111T-450E/TT
PackageSOT-23
BrandMICROCHIP
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
MICROCHIP MCP111T-450E / TT
Type
MICROCHIP
Minimum package
3000 个

Technical parameters

Electronic Component
Electronic Component
Electronic Component
MICROCHIP
Electronic Component
MCP111T-450E/TT
Electronic Component
1
Package
SOT-23
Electronic Component
Supervisorand positions IC
Electronic Component
0.03g
Electronic Component
1
Electronic Component
BM0230041060
Operating Temperature
40℃~+125℃
Operating Voltage
1V~5.5V
ICType
Voltage Supervisor
Output Type
Electronic Component
Voltage
4.38V
Static Current(Iq)
1.75uA
Supervisor Voltage
1

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

MCP111T-450E/TT 产品概述

一、概述

MCP111T-450E/TT 是 Microchip(美国微芯)推出的一款低功耗电压监控与复位芯片,工作电压范围宽(1.0V~5.5V),单路电压监控,阈值电压为 4.38V。器件采用 SOT-23 小封装,工业级工作温度范围 -40℃~+125℃(Tj),静态工作电流仅 1.75 μA,适合电池供电与低功耗系统的电源复位/上电复位(POR)应用。

二、主要特性

  • 芯片类型:电压监控器 / 复位发生器
  • 输出类型:开漏(open-drain)输出,需外部上拉电阻
  • 复位有效电平:低电平有效(主动拉低复位信号)
  • 阈值电压:4.38V(用于监控系统电源电压)
  • 受监控电压数:1 路
  • 无手动复位与看门狗功能,属于简单复位/加电复位器件
  • 静态电流(Iq):约 1.75 μA,适合待机/省电场景
  • 封装:SOT-23,便于小体积板级集成

三、典型应用场景

  • MCU/数字逻辑系统的上电复位与电压监控
  • 电池供电设备:便携设备、传感节点、手持终端
  • 电源序列与电压降落保护,防止在欠压条件下工作异常
  • 工业与车载电子(在满足系统认证与环境条件下)

四、设计注意事项

  • 输出为开漏,使用时需在复位输出端接上合适的上拉电阻至系统逻辑电平(例如 VCC 或 3.3V)
  • 复位为低电平有效:芯片输出拉低时系统处于复位状态,释放后进入正常运行
  • 保持芯片电源线良好去耦,建议在 VCC 端放置适当的旁路电容以抑制瞬态噪声
  • 确认系统工作电压始终在器件规定的 1.0V~5.5V 范围内;使用 4.38V 阈值时,应评估系统容差与上电斜率对复位行为的影响

五、优点与限制

优点:

  • 超低静态电流,适合低功耗与电池供电系统
  • 封装小、成本低,便于大规模应用
  • 固定阈值、结构简单、可靠性高

限制:

  • 无看门狗与手动复位功能,无法提供复杂复位策略或外部复位触发
  • 固定阈值设计,若需多阈值或可编程阈值需选用其他型号

总结:MCP111T-450E/TT 提供了一种简单、可靠且低功耗的电源监控和上电复位解决方案,适用于需固定 4.38V 监控阈值、对体积和功耗敏感的嵌入式系统。

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