WMSIC Electronic Components

LOWPOWER LP3809-263B3F

ModelLP3809-263B3F
PackageSOT-23
BrandLOWPOWER
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 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
LOWPOWER LP3809-263B3F
Type
LOWPOWER
Minimum package
3000 个

Technical parameters

Electronic Component
Electronic Component
Electronic Component
LOWPOWER
Electronic Component
LP3809-263B3F
Electronic Component
1
Package
SOT-23
Electronic Component
Supervisorand positions IC
Electronic Component
0.036g
Electronic Component
1
Electronic Component
BM0229943298
Reset
240ms
Operating Temperature
40℃~+85℃
Operating Voltage
900mV~5.5V
ICType
Voltage Detector
Voltage
2.63V
Static Current(Iq)
4uA
Supervisor Voltage
1

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

LP3809-263B3F 产品概述

一、产品简介

LP3809-263B3F 是微源半导体(LOWPOWER)推出的一款低功耗单路电压检测器,适用于对单一路电源进行上电/欠压监测与复位控制。器件工作电压范围宽(0.9 V 至 5.5 V),固定阈值为 2.63 V,具备 240 ms 的复位保持时间,静态电流仅 4 μA,工作温度范围为 -40 ℃ 到 +85 ℃,并采用 SOT-23 小型封装,适合电池供电与便携类设备的电源完整性保护。

二、主要特性

  • 监控通道:单路电压监控(1 输入)
  • 阈值电压:2.63 V(固定阈值)
  • 工作电压范围:0.9 V — 5.5 V,适应多种电源等级
  • 复位超时:240 ms(在欠压事件后保持复位时间)
  • 静态电流(Iq):4 μA(典型),极低的静态功耗利于延长电池寿命
  • 手动复位:无内置手动复位按键功能
  • 看门狗:无看门狗定时器
  • 工作温度范围:-40 ℃ 至 +85 ℃
  • 封装:SOT-23,体积小,便于 PCB 布局

三、典型应用场景

  • 电池供电系统:智能手持终端、遥控器、便携仪器等,需要低静态电流的电源监控
  • 微控制器(MCU)上电/欠压复位:对 2.63 V 阈值电源域进行可靠的上电复位和欠压保护,防止 MCU 在不稳定电源下异常运行
  • 物联网与可穿戴设备:超低功耗监测模块,延长待机时间
  • 电源管理与电源序列控制:作为单路电压监督元件参与简单的上电顺序与系统复位设计

四、设计参考与使用建议

  • 电源旁路:建议在 VCC 端靠近器件引脚放置 0.1 μF 陶瓷电容,抑制电源瞬态和噪声,确保检测精度与稳定性。
  • 输出处理:芯片提供复位输出以指示欠压状态。若外部系统需要与不同电平互联,请根据实际输出类型(开漏/推挽)配置上拉电阻或缓冲电路;若不确定输出类型,可参考器件数据手册确认后再设计。
  • 抗抖动:对缓慢上升或受噪声影响的电源轨,建议在系统中加入 RC 滤波或延时电路,避免因瞬时抖动导致误触发复位。
  • 手动复位扩展:器件无内置手动复位按键功能,如需手动触发复位,可在复位线上并联外部按键或外接低频脉冲生成电路实现。
  • 温度与老化考虑:在极端环境或长期使用场景下,请在系统设计阶段做温度漂移与长期稳定性验证。

五、选型建议与比较

LP3809-263B3F 的优势在于极低静态电流(4 μA)、宽工作电压范围以及适用于 2.63 V 阈值的单路监控场景。若设计要求:

  • 更低阈值或多路监控:可选择具有不同阈值或多通道电压检测器产品;
  • 需要看门狗或手动复位功能:应选带看门狗或手动复位输入的复合型监控芯片;
  • 更严格的复位时间或精度:比较器或高精度电压监测器可能更合适。

在便携式、低功耗产品或对体积敏感的应用中,SOT-23 封装的 LP3809-263B3F 可提供成本与面积均衡的解决方案。

六、封装与采购信息

  • 品牌:LOWPOWER(微源半导体)
  • 型号:LP3809-263B3F
  • 封装:SOT-23
  • 推荐应用:便携设备、MCU 欠压保护、电源管理模块

注:实际电气特性(如输出类型、阈值容差、瞬时行为等)请以产品数据手册为准;在量产前建议进行样片评估与系统级验证,以确保在目标应用环境下性能满足要求。

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