WMSIC Electronic Components

Mingda Micro MD8941

ModelMD8941
PackageSOT-23-6L
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
MD8941
Type
Mingda Micro
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
MD8941
Electronic Component
1
Package
SOT-23-6L
Electronic Component
DC-DC Power Supply IC
Electronic Component
0.001g
Electronic Component
1
Type
Electronic Component
Synchronous
Electronic Component
Electronic Component
BM0264391002
Operating Temperature
40℃~+85℃@(TA)
Operating Voltage
4.2V~40V
Switching Frequency
2MHz
Electronic Component
Electronic Component
Output Current
600mA

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

明达微MD8941降压型DC-DC转换器产品概述

明达微MD8941是一款专为中小功率降压场景设计的非同步整流DC-DC转换器,凭借宽输入电压范围、低静态电流、小封装等特性,适配多种工业与消费类应用需求,以下从核心定位、性能参数、封装特性等维度展开概述。

一、产品核心定位与应用场景

MD8941定位于宽电压范围、低功耗、小体积的降压电源解决方案,主要面向需要兼顾续航、可靠性与空间限制的应用:

  • 工业领域:传感器节点、小型控制器、远程监测设备(适配-40℃~+85℃宽温);
  • 便携式设备:手持终端、穿戴式产品、移动医疗设备(低静态电流延长电池续航);
  • 车载辅助:低功率车载电子(如胎压监测、车内传感器,支持12V/24V系统);
  • IoT终端:无线模块、低功耗节点(小封装适配高密度PCB)。

二、关键性能参数解析

MD8941的核心参数针对性解决了中小功率降压的常见痛点:

1. 宽输入电压覆盖

输入电压范围为4.2V~40V,覆盖多场景电源输入:

  • 单节锂电池(满电4.2V)、多节串联锂电池(如3节=12.6V、6节=25.2V);
  • 12V/24V工业电源、车载低压系统(12V/24V);
  • 避免输入电压波动导致的输出不稳定,适配复杂供电环境。

2. 中小功率输出能力

最大输出电流600mA,满足多数低/中功率负载需求:

  • 典型负载如MCU(50200mA)、无线模块(100300mA)、传感器(<50mA);
  • 输出电流稳定,支持连续负载工作,无明显压降。

3. 高开关频率优化

开关频率达2MHz,带来两大优势:

  • 电磁干扰(EMI)低:2MHz高于AM广播频段(0.535~1.705MHz),减少对周边电路的干扰;
  • 元件体积小:高频允许使用小容量电感(如10μH以下)和电容,缩小整体电源模块尺寸。

4. 低静态电流设计

静态电流(Iq)仅140μA,显著降低待机功耗:

  • 电池供电设备待机时,无需频繁唤醒或额外功耗管理;
  • 延长电池续航时间,尤其适合长期待机的IoT节点、便携式设备。

5. 拓扑与整流特性

采用降压式拓扑+非同步整流,内置开关管:

  • 结构简单可靠,无需外置开关管,减少元件数量与成本;
  • 非同步整流适配中小功率场景,效率满足多数应用需求(典型效率>85%)。

三、封装与集成特性

MD8941采用SOT-23-6L封装,是一款超小型表面贴装封装:

  • 尺寸约2.9mm×1.6mm×1.1mm,占用PCB面积极小,适配高密度布局;
  • 6引脚设计集成关键功能(输入、输出、反馈、使能等),外部仅需少量元件(电感、电容、电阻)即可构成完整电源电路;
  • 封装兼容性好,支持自动化贴装,降低生产难度。

四、工作温度与可靠性

MD8941支持**-40℃~+85℃(环境温度TA)** 宽温工作,达到工业级温度标准:

  • 适应低温户外(如北方冬季监测设备)、高温设备内部(如工业控制器机箱);
  • 经过可靠性测试,可承受温度循环、湿度变化等恶劣环境,长期工作稳定性有保障。

五、产品优势总结

MD8941在中小功率降压场景中具备明显竞争力:

  1. 宽电压适配:4.2V~40V覆盖多类电源输入;
  2. 低功耗待机:140μA静态电流延长电池续航;
  3. 小体积集成:SOT-23-6L封装适配高密度设计;
  4. 宽温可靠:-40℃~+85℃满足工业级应用;
  5. 高性价比:内置开关管+非同步整流,降低BOM成本。

综上,MD8941是一款平衡了性能、体积与成本的降压DC-DC转换器,适合对功耗、空间、可靠性有要求的中小功率应用场景。

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