WMSIC Electronic Components

Mingda Micro MD5118

ModelMD5118
PackageSOT-23-5L
BrandElectronic Component
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 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
MD5118
Type
Mingda Micro
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
70mV@(100mA)
Electronic Component
Electronic Component
Electronic Component
MD5118
Electronic Component
1
Package
SOT-23-5L
Electronic Component
Linear Regulator(LDO)
Electronic Component
0.035g
Electronic Component
1
Features
Output
Electronic Component
BM0264548226
Operating Temperature
40℃~+85℃
Operating Voltage
7V
Output
Electronic Component
Output Voltage
1.8V
Output Current
300mA

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

MD5118 产品概述

一、产品简介

MD5118 是明达微推出的一款高性能固定输出线性稳压器(LDO),单通道设计,适用于电池供电和便携类电子设备。该器件提供 1.2V~5.0V 的固定电压系列,本概述以 1.8V 版本为例,工作电压上限为 7V,最大输出电流可达 300mA,适配多种低功耗应用场景。

二、主要性能特点

  • 输出极性:正极,固定输出(本型号为 1.8V);系列覆盖 1.2V~5.0V。
  • 最大输出电流:300mA。
  • 低压差性能:在 100mA 时压差仅 70mV,低电流工况下效率优异;较大电流时压差会增加,应在系统设计中考虑。
  • 超低静态电流:Iq 典型值 500nA,适合待机与电池续航要求高的系统。
  • 保护与功能:短路保护、过流保护、热关断、输出放电、使能控制。
  • 工作温度范围:-40℃ ~ +85℃。

三、封装与引脚

MD5118 提供紧凑封装,适合空间受限的 PCB 布局:XDFN-4-EP (1x1) 和 SOT-23-5L 等封装形式,便于手持和消费类产品的表贴组装。

四、典型应用

  • 移动终端与可穿戴设备电源管理
  • 电池供电的传感器节点与物联网终端
  • MCU/FPGA/外围芯片的低噪声供电
  • 工业控制与便携测量仪器

五、设计建议与注意事项

  • 输出电容:为保证稳压器稳定性与瞬态响应,建议在输出端使用低 ESR 的陶瓷电容(如 1µF~10µF,X5R/X7R),并将电容靠近输出引脚布局。
  • 输入电容:输入侧也建议配置适当的去耦电容以抑制输入源阻抗和瞬态。
  • 热管理:高电流或较大压降工况下注意封装热阻与 PCB 散热,避免进入热关断影响可靠性。
  • 使能控制:通过使能引脚可实现低功耗关断与输出放电功能,具体电平与使用方法请参照数据手册。

六、总结

MD5118 以极低静态电流、优秀的低压差性能和完善的保护功能,适合对待机功耗与空间有严格要求的应用。其 1.8V 固定输出版本以及 1.2V~5.0V 系列变体,可灵活匹配多类电源需求;建议在最终设计中参考厂方数据手册以获取详细引脚定义与典型应用电路。

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