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ADI/LINEAR MAX809LEUR+T MAX809LEUR
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- ADI(Analog Devices) / LINEAR MAX809LEUR+T
- Type
- ADI/LINEAR
- Minimum package
- 2500 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- ADI(Analog Devices) / LINEAR
- Electronic Component
- MAX809LEUR+T
- Electronic Component
- 1
- Package
- SOT-23-3
- Electronic Component
- Supervisorand positions IC
- Electronic Component
- 0.033g
- Electronic Component
- 1
- Electronic Component
- BM0258838755
- Reset
- 140ms
- Operating Temperature
- 40℃~+105℃@(TA)
- Operating Voltage
- 1.2V~5.5V
- ICType
- Voltage Supervisor
- Output Type
- Electronic Component
- Voltage
- 4.63V
- Static Current(Iq)
- 60uA
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
MAX809LEUR+T 产品概述
一、产品概况
MAX809LEUR+T 是来自 ADI（原 Maxim/LINEAR）的一款低功耗电源监控器/处理器监视器（Processor Supervisor），采用 SOT-23-3 小封装并以卷带（T/R）形式供货。器件在被监控电源低于设定阈值时产生复位信号，对单路电源进行监控，专为微控制器、数字逻辑与嵌入式系统的可靠上电复位需求设计。
二、主要技术参数
- 芯片类型：电源监控器 / 处理器监控器
- 工作电压范围：1.2 V ～ 5.5 V
- 受监控电压数：1 路
- 阈值电压（VTH）：4.63 V（器件型号固有门限）
- 复位有效电平：低电平有效（Active Low）
- 输出类型：推挽（Push-Pull）
- 复位超时：典型 140 ms（上电/电压恢复后的保持时间）
- 静态电流（Iq）：典型 60 µA
- 工作温度范围：-40 ℃ ～ +105 ℃（Ta）
- 封装：SOT-23-3（3 引脚）
三、功能与特点
- 单一固定阈值监控，门限为 4.63V，适用于需要该阈值的5V系统保护。
- 推挽输出可以主动拉高或拉低复位线，无需外部上拉电阻，便于直接驱动下游逻辑或 MCU 复位引脚。
- 低静态电流（60µA），适合电池供电或低功耗系统。
- 上电、下电和电压瞬变时可靠地产生复位信号，复位保持时间约 140ms，保证系统在电压稳定后有足够的初始化时间。
- 小型 SOT-23-3 封装，节省 PCB 面积，适合空间受限应用。
四、典型应用场景
- 单电源微控制器/微处理器系统的电源监督与复位。
- 工业控制、仪表与通信终端的可靠上电管理。
- 电池供电的便携设备与消费类电子。
- 需要固定 4.63V 监控门限的 5V 数字系统保护。
五、设计与使用建议
- 将器件尽可能靠近被监控的 MCU 或关键芯片放置，以减小走线干扰与寄生电阻带来的误触发。
- 由于输出为推挽结构，通常无需外接上拉电阻；若系统要求开漏兼容，可在外部加上隔离电路或选择开漏型监控器。
- 上电去抖或抗瞬变，可在复位线上并联小电容（根据系统需求调整），但要注意可能影响复位释放时间。
- 工作环境温度较高或噪声较大的系统，建议加适当的旁路电容与 PCB 接地设计，提升可靠性。
六、封装与订购信息
- 封装：SOT-23-3，3 引脚小封装，便于表面贴装。
- 包装：卷带（Tape & Reel），便于自动贴片生产。
- 品牌：ADI（原 Linear/Maxim）。
- 型号示例：MAX809LEUR+T（含卷带包装信息），购买时请确认阈值、封装与温度等级等与设计一致。
总结：MAX809LEUR+T 提供了低功耗、固定 4.63V 门限和推挽输出的可靠电源监控解决方案，适用于需要简洁、稳定上电复位保护的各种嵌入式与数字系统。在布局与旁路处理上稍加注意，即可获得稳健的系统复位行为。
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