Model & package intelligence
Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.
LOWPOWER LP3809-293B3F
Configuration
1 options
Configuration
24+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- LOWPOWER LP3809-293B3F
- Type
- LOWPOWER
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- LOWPOWER
- Electronic Component
- LP3809-293B3F
- Electronic Component
- 1
- Package
- SOT-23-3
- Electronic Component
- Supervisorand positions IC
- Electronic Component
- 0.011g
- Electronic Component
- 1
- Electronic Component
- BM0230595837
- Reset
- 240ms
- Operating Temperature
- 40℃~+85℃
- Operating Voltage
- 2.5V~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.
LP3809-293B3F 产品概述
一、产品简介
LP3809-293B3F 是微源半导体（LOWPOWER）推出的一款低功耗单路电压检测器（Voltage Detector），用于对单一电源轨进行欠压监测并产生复位定时。器件工作电压范围为 2.5V 至 5.5V，检测阈值为 2.63V，典型静态电流仅为 4µA，复位超时（上电复位延时）为 240ms，工作温度范围为 -40℃ 至 +85℃，封装为常见的 SOT-23-3。
二、主要特性
- 监控通道：单路（1）
- 工作电压：2.5V ~ 5.5V
- 检测阈值：2.63V（标称）
- 复位超时：240ms（上电延时/去抖时间）
- 静态电流：4µA（低静态电流，适合电池供电应用）
- 无手动复位输入、无看门狗定时器功能
- 工作温度：-40℃ ~ +85℃
- 封装：SOT-23-3，便于 PCB 布局与量产
三、功能说明与工作原理
LP3809-293B3F 在被监控电压低于阈值（2.63V）时输出复位信号，防止系统在欠压状态下工作。电源恢复并超过阈值后，芯片内部通过 240ms 的复位超时保证输出保持复位一段固定时间，以给微控制器或系统器件充足的上电初始化时间。器件不包含外部手动复位输入或独立的看门狗功能，适合作为简洁可靠的电源监控模块。
四、典型应用场景
- MCU / MPU 的上电复位与欠压保护
- 电池供电设备（如可穿戴、便携式终端、遥测设备），用于锂电池或单节电池电压监控
- 工业控制、仪表和传感器节点的电源完整性保护
- 电源管理和电源序列控制的简单复位来源
五、设计与使用建议
- VCC 必须保持在器件工作电压范围（2.5V~5.5V）内，阈值 2.63V 适合用于 3.0V 左右系统的欠压检测；若用于 3.3V 系统，可作为可靠的上电检测与去抖手段。
- 静态电流 4µA 有利于延长电池寿命，但仍建议在 PCB 设计中做好电源旁路电容，以抑制瞬态干扰。
- 封装为 SOT-23-3，请按照器件数据手册提供的推荐焊盘尺寸布板，注意热阻和走线，避免在检测引脚上产生额外压降。
- 具体的复位输出极性与管脚定义请参考官方数据手册，在设计时根据 MCU 复位输入要求连接（可与上拉/下拉组合使用以满足系统逻辑）。
六、封装与选型信息
LP3809-293B3F 提供 SOT-23-3 小封装，便于表面贴装与自动化生产。型号后缀及封装信息请以微源半导体的正式数据手册和采购目录为准，量产选型时建议确认供应商的可得性与环境合规性（如 RoHS）。
七、总结与建议
LP3809-293B3F 是一款面向低功耗和电池供电场景的单路电压检测器，阈值 2.63V 与 240ms 的复位延时组合，能为 3V 级别系统提供稳定的上电复位与欠压保护。设计时注意核对数据手册中关于复位输出极性、时序和管脚定义的详细说明，以保证与目标系统的兼容性与可靠性。若需更复杂的复位控制或看门狗功能，可考虑与带有这些功能的器件配合使用。
Request for quote
Send RFQ
Use the form for single models, category sourcing, and multi-line BOM requirements.
Product sourcing intelligence
Model, package, availability, and BOM fit reviewed before quotation.
WMSIC turns product data, package visuals, BOM context, and sourcing signals into practical RFQ notes for buyers.
BOM matching & alternatives
BOM lines are compared by package, parameters, quantity, and workable alternatives for cleaner sourcing decisions.
Sourcing availability signal
Stock routes, quotation confidence, lead-time notes, and shipment feasibility are checked before sales follow-up.
Buyer sourcing scenarios
Examples of how common component sourcing requests are organized.
Typical RFQ scenarios based on the WMSIC form fields, catalog data, manual review steps, and shipment preparation workflow.
The buyer shares the full part number, package requirement, quantity, destination, and available product photos so the quotation can record the exact version under review.
A multi-line BOM is organized into direct sourcing lines, lines that need package clarification, and lines where alternative-part review is permitted.
The original manufacturer part number, datasheet revision, application, critical limits, and acceptable changes are collected before possible candidates are discussed.
Sample quantity, minimum packing, package format, target date, and courier destination are kept together in one RFQ conversation.
Package photos, model markings, board context, and the quantity needed for repair help focus the sourcing review on the relevant version.
When a suffix or package note is incomplete, the response records the open difference and requests buyer confirmation before procurement proceeds.
Packing format, carton notes, invoice details, courier option, destination, and tracking handoff are coordinated around the confirmed order.
The request connects the previously used model, current demand, package evidence, target timing, and replenishment sourcing route.
Related products
Packaged components ready for RFQ.
