WMSIC Electronic Components

MSKSEMI CAT809STBI-GT3-MS CAT809STBI

ModelCAT809STBI-GT3-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 CAT809STBI-GT3-MS
Type
SOT-23
Minimum package
3000 未知

Technical parameters

Electronic Component
Electronic Component
Electronic Component
MSKSEMI
Electronic Component
CAT809STBI-GT3-MS
Electronic Component
1
Package
SOT-23
Electronic Component
Supervisorand positions IC
Electronic Component
0.036g
Electronic Component
1
Electronic Component
BM0264457547
Reset
240ms
Operating Temperature
40℃~+125℃
Operating Voltage
1V~5.5V
ICType
Voltage Supervisor
Output Type
Electronic Component
Voltage
2.93V
Supervisor Voltage
1

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

CAT809STBI-GT3-MS 产品概述

一、产品简介

CAT809STBI-GT3-MS 是美森科(MSKSEMI)推出的一款低功耗电压监控器(复位芯片),采用 SOT-23 封装。器件对单路电源进行监控,当被监控电压低于门限电压 2.93V 时,会产生低电平有效的复位信号,典型复位脉宽为 240ms。工作电压范围宽(1.0V~5.5V),并能在 -40℃~+125℃ 的工业级温度下稳定工作,适合便携式音频及消费类电子产品的电源监测与复位保护。

二、主要特点

  • 单通道电压监控:对一路电压进行可靠监控。
  • 门限电压:固定阈值 2.93V,适用于常见的系统电压域。
  • 工作电压:1.0V~5.5V,兼容多种供电方案。
  • 输出类型:推挽输出(push-pull),可同时驱动高低电平,便于直接与 MCU 或逻辑电路接口。
  • 复位极性:低电平有效(Active Low)。
  • 复位超时:标准复位保持时间 240ms,保证上电稳定初始化。
  • 工作温度:-40℃~+125℃,满足工业级温度要求。
  • 封装:SOT-23,小尺寸,利于空间受限的板级设计。

三、功能说明

当被监控电压持续低于 2.93V 时,CAT809STBI-GT3-MS 将输出一个低电平复位信号,抑制系统进入不确定状态;当电压恢复到阈值以上并保持一定时间后(复位超时 240ms),器件释放复位,输出回到高电平,使系统能可靠上电启动。推挽输出能提供更稳定的驱动能力,适合直接拉高或拉低下游逻辑电平。

四、电气与环境参数(概要)

  • 阈值电压(典型):2.93V
  • 电源电压范围:1.0V ~ 5.5V
  • 复位超时:240ms(典型)
  • 监控通道数:1 路
  • 输出类型:推挽(可源/可 sink)
  • 复位有效电平:低电平有效
  • 工作温度范围:-40℃ ~ +125℃

(详尽的动态参数、输入漏电流、输出驱动能力及时序特性请参见官方数据手册)

五、封装与引脚

器件采用 SOT-23 小型封装,占板面积小,适合移动设备与便携终端的空间优化设计。SOT-23 的引脚排列与常见复位器件兼容,便于替代或升级现有设计。

六、典型应用场景

  • 便携式音频设备:智能手机、平板、便携式音乐播放器等,用于电源监测与系统复位保护。
  • 笔记本、二合一设备:保证主控/音频子系统在电源瞬变下的可靠复位。
  • 高端音频播放器与便携 DAC/放大器:维护音频系统上电顺序与消除上电噪声引起的异常。
  • 通用微控制器系统:作为欠压检测(BOD)与上电复位(POR)解决方案。

七、设计与使用建议

  • 在布板时建议靠近 VCC 引脚放置去耦电容,保证被监控节点的瞬态稳定性。
  • 复位输出为推挽型,可直接连接 MCU 复位引脚;若系统需多器件复位联动,可通过专用复位分配或外部线路逻辑实现。
  • 对于噪声较大的电源,必要时在被监控点加滤波或缓冲,以避免误触发。
  • 请参考官方数据手册中的热特性与最大绝对额定值进行散热与布局设计,确保长期可靠性。

八、总结

CAT809STBI-GT3-MS 是一款性能稳定、封装紧凑的低功耗电压监控器,凭借 2.93V 的精确阈值、240ms 的复位保持时间以及推挽输出特性,适用于对上电行为和欠压保护有严格要求的便携式音频与消费电子产品。对于需要可靠上电初始化和抗电源瞬态能力的设计,CAT809STBI-GT3-MS 提供了简洁且高效的解决方案。有关更详细的时序、功耗与典型应用电路,请参阅厂商提供的数据手册。

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