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RICHTEK RT9818C-27GV RT9818C
Configuration
1 options
Configuration
24+
Available for RFQ
Technical data
Product details
20
specifications
Core information
- Product name
- RICHTEK RT9818C-27GV
- Type
- RICHTEK
- Unit
- Electronic Component
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- Electronic Component
- Electronic Component
- RICHTEK
- Electronic Component
- RT9818C-27GV
- Electronic Component
- 1
- Package
- SOT-23
- Electronic Component
- Supervisorand positions IC
- Electronic Component
- 0.151g
- Electronic Component
- 1
- Electronic Component
- BM0231045582
- Reset
- 220ms
- Operating Temperature
- 40℃~+85℃@(TA)
- Operating Voltage
- 900mV~6V
- ICType
- Voltage Supervisor
- Output Type
- Electronic Component
- Voltage
- 2.7V
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
RT9818C-27GV 产品概述
一、概述
RT9818C-27GV 是 RICHTEK（台湾立锜）推出的一款低电流电压监控与复位器件，针对单路电源监控与上电复位应用优化。器件具有 2.7V 的固定阈值、开漏输出及低功耗特性，工作电压范围宽（0.9V ～ 6V），适合电池供电与便携式系统对复位可靠性与功耗的双重要求。
二、主要特性
- 监控阈值：2.7V（固定）
- 工作电压范围：0.9V ～ 6V
- 输出类型：开漏（Open-drain），复位低电平有效
- 复位保持时间（复位超时）：典型 220ms
- 静态电流（Iq）：约 3µA（低功耗）
- 监控通道数：1 路
- 无内置手动复位按键输入、无看门狗计时器
- 工作温度：-40℃ ～ +85℃（TA）
- 封装：SOT-23，适合空间受限的 PCB 设计
三、工作原理与输出行为
当被监控电源电压低于 2.7V 时，OUT 端被拉低（低电平有效复位），对系统执行复位动作；当电源恢复超过阈值且保持稳定后，器件在内部定时 约 220ms 后释放复位，保证系统稳定上电。由于输出为开漏结构，需外接上拉电阻到合适的逻辑电平（通常拉到 VCC），同时支持多器件线-或（wire-OR）复位总线设计。
四、典型应用场景
- MCU/数字系统的上电复位与欠压保护（brown-out）
- 电池供电与低功耗便携设备（IoT 终端、手持设备）
- 存储器、通信模块与外设的可靠上电序列控制
- 工业与消费类产品中要求简洁、稳定复位方案的场合
五、使用建议
- OUT 为开漏输出，推荐上拉电阻值范围 10kΩ ～ 100kΩ，典型值 10kΩ。
- 建议在 VCC 端增加去耦电容（例如 0.1µF）并尽量将芯片靠近被监控电源轨布局，以降低噪声误触发概率。
- 器件无专用手动复位输入；如需手动复位，可通过外部开关短接 OUT 到地实现，但应注意避免外部驱动与开漏输出冲突。
- 若应用需要看门狗功能或可调阈值，请在系统设计中配合其他专用芯片使用。
六、总结
RT9818C-27GV 提供了一个简单、低功耗且可靠的 2.7V 固定阈值复位解决方案，适用于对上电稳定性和欠压保护有严格要求且空间受限的产品设计。其开漏输出与低静态电流特性，使其在电池供电与多模块复位架构中具有良好兼容性与灵活性。
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