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Mingda Micro MD53U50
Configuration
1 options
Configuration
24+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- MD53U50
- Type
- Mingda Micro
- Minimum package
- 1000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- 200mV@(200mA)
- Electronic Component
- Electronic Component
- Electronic Component
- MD53U50
- Electronic Component
- 1
- Package
- SOT-89
- Electronic Component
- Linear Regulator(LDO)
- Electronic Component
- 0.159g
- Electronic Component
- 1
- Features
- Electronic Component
- Electronic Component
- BM0264548232
- Operating Temperature
- 40℃~+85℃@(Ta)
- Operating Voltage
- 10V
- Output
- Electronic Component
- Output Voltage
- 5V
- Output Current
- 500mA
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
MD53U50 产品概述
一、产品简介
MD53U50 为明达微推出的一款高性能低压差线性稳压器（LDO），固定输出 5.0V，面向对噪声、待机功耗和快速保护有要求的消费类与工业类电源方案。器件采用 SOT-89 小封装，单通道输出，适合空间受限、需中等电流供电的应用场景。
二、主要性能指标
- 输入电压上限（工作电压）：10V（请按实际电路留有裕量）
- 输出电压：5.0V（固定）
- 输出电流：最大 500mA
- 压差（Dropout）：200mV @ 200mA（更高电流下压差会增加）
- 静态电流（Iq）：典型 25µA，适合低功耗待机设计
- PSRR：65dB @ 1kHz，具备良好电源纹波抑制能力
- 保护功能：具备短路保护
- 工作温度范围：-40℃ ~ +85℃（Ta）
- 封装：SOT-89，单输出通道
三、典型应用领域
- 单片机与数字回路的 5V 供电
- 传感器模块、电表与工业控制模块
- 便携设备的外围电源、基准供电
- EMI/噪声敏感电路的本地稳压
四、封装与引脚（参考）
SOT-89 三引脚小封装，常见引脚分配为：1—GND，2—OUT，3—IN（不同厂商可能略有差异，请以官方数据手册为准）。
五、应用注意与布局建议
- 输入端建议并联 1µF~10µF 低 ESR 陶瓷电容，靠近 IN 引脚放置以抑制输入瞬态和引线感抗。
- 输出端常用 2.2µF~10µF 陶瓷电容以保持稳定，注意电容 ESR 对 LDO 稳定性的影响。
- 依据功耗 Pd = (Vin - Vout) × Iout 评估结壳温升：当 Vin=10V、Vout=5V、Iout=500mA 时，Pd≈2.5W，SOT-89 热阻限制下需靠 PCB 大铜箔散热并限制持续输出电流或降低输入差压。
- 在高电流或高差压工况下，推荐在输出旁增加热敏元件或使用散热铜箔并保证合适的热过载保护。
- 布局时 IN、OUT 电容靠引脚最近放置，地线使用短且粗的回流路径，避免长窄走线增加热阻与噪声耦合。
六、选型与使用建议
若系统输入与输出电压差较大或长时间高电流输出，优先考虑功耗、热量管理或选择更大封装／外置散热方案。对于对电源纹波、静态电流有严格要求的电池供电和便携终端，MD53U50 的低 Iq 与高 PSRR 提供了优势。最终应用请结合官方数据手册验证极限参数与典型性能曲线。
如需参考典型接线图、纹波抑制曲线或更详细的热性能数据，可提供需求以便给出更具体的设计指导。
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