WMSIC Electronic Components

MICRONE ME2808A45M3G

ModelME2808A45M3G
PackageSOT-23
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 24+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
MICRONE ME2808A45M3G
Type
MICRONE
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
MICRONE
Electronic Component
ME2808A45M3G
Electronic Component
1
Package
SOT-23
Electronic Component
Supervisorand positions IC
Electronic Component
0.038g
Electronic Component
1
Electronic Component
BM0227656165
Operating Temperature
40℃~+85℃@(TA)
Operating Voltage
1.5V~18V
ICType
Voltage Detector
Output Type
Electronic Component
Voltage
4.5V
Static Current(Iq)
1.8uA
Supervisor Voltage
1

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

ME2808A45M3G 产品概述

一、产品简介

ME2808A45M3G 是南京微盟(MICRONE)推出的一款小封装电压检测复位IC,芯片类型为电压检测器(voltage detector),采用SOT-23封装。器件对单路电压进行监控,当被监控电压低于设定阈值时将输出复位信号,复位为低电平有效,输出为开漏结构。器件工作电压范围宽(1.5V ~ 18V),静态电流极低(Iq ≈ 1.8μA),工作温度范围为 -40℃ ~ +85℃(Ta),适合低功耗与工业级应用场景。

二、主要特点

  • 监控方式:单路电压监控
  • 阈值电压:4.5V(典型触发点)
  • 输出类型:开漏(Open-drain),需要外接上拉电阻
  • 复位极性:低电平有效(Vdd 低于阈值时 /RESET 输出低)
  • 电源范围:1.5V ~ 18V,支持多种电源系统
  • 静态电流:典型 1.8μA,适合电池供电与超低功耗设计
  • 无看门狗与手动复位功能(仅电压检测与自动复位)
  • 封装:SOT-23,体积小,便于空间受限的电路板布局

三、功能与外部连接建议

  • 引脚功能(典型3引脚配置):VDD(供电)、GND(地)、/RESET(开漏输出)。具体引脚定义请以器件数据手册为准。
  • 上拉电阻:由于输出为开漏,/RESET 需通过上拉电阻拉至系统电压(常用值 10kΩ)或连接至微控制器的上拉输入。
  • 去耦电容:在 VDD 与 GND 之间放置 0.1μF 陶瓷去耦电容,靠近器件电源脚以抑制瞬态干扰。
  • 复位行为:当 VDD 低于 4.5V 阈值时,/RESET 拉低;当 VDD 回升超过阈值后,器件在内部设定的保持时间后释放复位(详细延时与容差信息请参考完整规格书)。

四、典型应用场景

  • MCU 与处理器上电复位与电压监控
  • 电池供电设备的欠压保护与复位管理
  • 工业控制与车载附件(宽电压范围支持 18V 系统)
  • 消费电子、家电与通讯设备中的可靠上电检测
  • 电源管理模块与系统看护电路

五、设计注意事项与可靠性建议

  • 阈值容差、迟滞及复位保持时间等关键参数请以官方数据手册为准,设计时预留裕量。
  • 对于高噪声电源,建议在 VDD 上增设小型 RC 滤波或在 /RESET 输出处并联小电容以抑制短脉冲误触发。
  • 布局时将器件与被监控电源轨靠近放置,缩短引线与走线以降低感应噪声。
  • 在多电压系统中,若监控对象不是芯片自身供电,确保上拉电阻与逻辑电平兼容。
  • 出于长期可靠性考虑,工作温度及最大额定电压(18V)不要长期超出器件推荐工作范围。

六、优势概述与选型建议

ME2808A45M3G 以其低静态电流、宽工作电压和小封装,在对功耗敏感且电源波动较大或需支持高压轨的场景中具有优势。适用于希望用简单、可靠的电压检测器替代复杂复位管理电路的设计。选型时若需看门狗或手动复位功能,应考虑配合其他器件或选择功能更完整的复位管理芯片;若对阈值精度和复位延时有严格要求,请索取并核对完整规格书与器件曲线。

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