WMSIC Electronic Components

SGMICRO SGM809-XXN3L/TR SGM809

ModelSGM809-XXN3L/TR
PackageSOT-23
BrandSGMICRO
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
SGMICRO SGM809-XXN3L / TR
Type
SOT-23
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
SGMICRO
Electronic Component
SGM809-XXN3L/TR
Electronic Component
1
Package
SOT-23
Electronic Component
Supervisorand positions IC
Electronic Component
0.04g
Electronic Component
1
Electronic Component
BM0229352844
Operating Temperature
40℃~+125℃
ICType
Voltage Supervisor
Output Type
Electronic Component
Voltage
1.63V
Static Current(Iq)
13uA
Supervisor Voltage
1
Reset Level
Level

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

SGM809-XXN3L/TR 产品概述

SGM809-XXN3L/TR 是圣邦微(SGMICRO)推出的一款低功耗电压监控与复位芯片,集成电压监测、比较与推挽复位输出功能,适用于对单一路电源进行可靠监测并在电压异常时提供系统复位信号。器件采用小尺寸 SOT-23 封装并提供带卷带(TR)包装,便于自动化贴片生产与批量采购。

一、主要特性

  • 芯片类型:电压监控器(Voltage Monitor)
  • 监控路数:单路(1 路受监控电压)
  • 阈值电压:1.63 V(阈值精确度与容差请参照产品资料)
  • 输出类型:推挽输出(Push-Pull),可直接驱动逻辑电平,无需外置上拉电阻
  • 复位有效电平:低电平有效(Reset Active Low),当监控电压低于阈值时复位输出被拉低
  • 工作温度范围:-40 ℃ 至 +125 ℃(适用于工业级温度环境)
  • 静态电流(Iq):13 μA(典型,适合低功耗与电池供电系统)
  • 封装形式:SOT-23(小外形,节省 PCB 面积)
  • 包装方式:卷带(TR)便于贴片生产

二、功能与工作原理概述

SGM809-XXN3L/TR 对指定电源电压进行实时监控。当被监控电压低于内置阈值(1.63 V)时,内部比较器触发,器件产生有效低电平的复位输出(RESET↓),向系统发出复位或禁止动作的信号。电压恢复并稳定高于阈值时,复位输出释放回高电平,系统恢复正常工作。

推挽输出结构能够在输出高、低两端均提供有效驱动能力,方便直接驱动 MCU、FPGA 或其他逻辑输入,无需外部上拉或下拉电阻,简化电路设计。

低静态电流(13 μA)使其非常适合电池供电或待机功耗敏感的应用场景;宽温度范围保证芯片在严苛工业或户外环境下仍能稳定工作。

三、典型应用场景

  • 单片机(MCU)和数字系统的电源监控与上电复位
  • 便携式与电池供电设备的欠压保护与低功耗管理
  • 电源排序与复位控制(power sequencing)
  • 工业控制器、通信设备与仪器仪表
  • 消费类电子、物联网终端与传感器节点

四、设计与使用建议

  • 电源去耦:在芯片 VCC 引脚附近放置一个 0.01–0.1 μF 的陶瓷旁路电容,以抑制电源瞬变与噪声,避免误触发。
  • 布局:将 SGM809 放置在被监控电源的靠近位置,保持 VCC 与监控节点的走线尽量短且粗,降低阻抗和干扰耦合。
  • 输出连接:由于为推挽输出,可直接连接到 MCU 的复位输入或供电使能控制端;若需要更长的复位保持时间或软复位功能,可在系统中另行加装 RC 延时或由 MCU 软件控制。
  • 干扰抑制:若监控节点存在高频噪声或瞬态下跌,建议在监控输入处增设小电容或 RC 滤波(注意不要改变阈值判断的有效性),或在关键场合结合上电复位延时电路使用。
  • ESD 与浪涌保护:在可能遭受外部干扰或接插场景中,应考虑在电源输入侧增加合适的瞬态抑制器(TVS)或熔断保护元件。

五、封装与订购说明

SGM809-XXN3L/TR 提供 SOT-23 小封装,适合表贴工艺与高密度 PCB 设计。型号中的 “XX” 为阈值代码或版本标识,不同代码对应不同阈值或配置,具体命名规则与端子定义请参照圣邦微官方数据手册。尾缀 “TR” 表示卷带包装,方便自动化贴片生产。

六、选型与注意事项

  • 确认阈值:本型号阈值为 1.63 V,选型时需核对系统需要的监控点电压与容差要求;若系统电压不同,请从系列中选择相应阈值型号。
  • 复位行为:了解器件在阈值附近的滞后(hysteresis)和复位释放条件(例如电压回升到阈值以上是否需要额外上升裕量或时间稳定),详见数据手册以确保系统稳定性。
  • 温度与功耗:工业温度范围与低静态电流使其适合多种场景,但在高温或长期高湿环境下仍需考虑器件老化与 PCB 散热。
  • 系统兼容性:推挽输出电平需与被驱动器件的输入电压域兼容;若需要隔离或电平移位,请在外围电路中加入相应措施。

总结:SGM809-XXN3L/TR 是一款结构简单、功耗低、推挽输出且适用工业温度的单路电压监控与复位芯片,适合对低电压点(1.63 V)进行可靠监控并提供直接的复位控制,广泛适用于电源管理和系统可靠性设计。更多详细电气特性、典型波形与应用电路建议,请参阅圣邦微官方数据手册。

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