WMSIC Electronic Components

Mingda Micro MD7218E38PC1

ModelMD7218E38PC1
PackageSOT-89-5L
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
MD7218E38PC1
Type
Mingda Micro
Minimum package
1000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
1.3V@(1A)
Electronic Component
Electronic Component
Electronic Component
MD7218E38PC1
Electronic Component
1
Package
SOT-89-5L
Electronic Component
Linear Regulator(LDO)
Electronic Component
0.099g
Electronic Component
1
Electronic Component
BM0264548231
Operating Temperature
40℃~+85℃@(Ta)
Operating Voltage
18V
Output
Electronic Component
Output Voltage
3.8V
Output Current
1A
Output Type
Electronic Component

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

MD7218E38PC1线性稳压器(LDO)产品概述

一、产品定位与核心身份

MD7218E38PC1是明达微推出的固定输出型线性稳压器(LDO),专为1A中等负载需求设计,主打低静态功耗、高纹波抑制和紧凑封装,适配对电源效率、噪声敏感且空间受限的电子设备。作为单通道正极输出LDO,它无需外部反馈元件即可稳定输出3.8V电压,简化电路设计的同时提升可靠性。

二、关键性能参数深度解析

该产品核心参数针对实际场景做了针对性优化,关键指标清晰且实用:

  1. 电压与压差:工作电压(输入范围)支持18V,固定输出电压3.8V;满载1A时压差仅1.3V——意味着输入电压只需略高于输出(3.8V+1.3V=5.1V)即可稳定工作,适配更多低压输入场景(如电池供电的便携设备)。
  2. 电流能力:最大输出电流1A,可满足大多数小型负载(传感器、蓝牙模块等)的供电需求;静态电流仅1.6μA(μA级)是核心优势——极低的待机功耗让它在电池供电设备中表现优异,能显著延长单次充电后的工作时间。
  3. 纹波抑制:电源纹波抑制比(PSRR)达65dB@1kHz,对1kHz频段的电源噪声抑制效果明显,适合对电源纯净度要求高的设备(如模拟传感器、低噪声放大器)。
  4. 输出特性:单通道正极固定输出,无需额外调整电阻,输出电压精度稳定,减少设计调试工作量。

三、封装与引脚配置

产品采用SOT-89-5封装,属于小型表面贴装封装,尺寸紧凑(典型尺寸约3.0×2.5×1.1mm),适合便携设备、小型模块的高密度布局;同时SOT-89封装的散热性能优于常规SOT-23,可支持1A负载下的稳定工作,避免因散热不足导致性能下降。

四、核心特性与安全保护机制

除基础性能外,MD7218E38PC1内置实用特性与安全保护:

  • 过流保护(OCP):当输出电流超过额定1A阈值时,芯片自动限制输出电流至安全范围,防止后端负载因过流烧毁,同时避免芯片自身过载损坏。
  • 过热保护(OTP):当芯片结温因负载过大、环境温度过高(如户外高温)超过设定阈值时,触发热关断功能,切断输出;待温度回落至安全范围后自动恢复,无需手动重启,提升系统可靠性。
  • 低静态电流:1.6μA的静态电流远低于常规LDO(多数同类产品静态电流在10μA以上),特别适合电池供电的待机场景(如物联网传感器节点,待机时几乎不消耗电池电量)。

五、典型应用场景

MD7218E38PC1的参数特性使其适配多种场景:

  1. 便携电子设备:智能手环、蓝牙耳机、运动相机等——低静态电流延长电池续航,1A负载满足模块供电,紧凑封装适配小体积设计。
  2. 物联网终端:环境传感器节点、低功耗无线模块——低功耗待机+高PSRR抗干扰,适合长期户外部署(-40℃~+85℃温度范围)。
  3. 工业辅助电路:小型工业传感器、PLC辅助模块——工业级温度范围+过流过热保护,适应 harsh 环境。
  4. 消费电子配件:移动电源的辅助供电、小型充电器——1A输出满足手机应急充电,固定电压无需调整。

六、环境适应性与可靠性

该产品工作温度范围覆盖**-40℃~+85℃**,达到工业级温度标准,可在户外低温(如北方冬季)、高温(如夏季户外)环境下稳定工作;固定输出无需外部校准,减少设计变量,提升批量生产一致性;内置双重保护机制,进一步降低系统故障风险,适合对可靠性要求较高的应用。

总结

MD7218E38PC1作为一款高性价比的固定输出LDO,以低静态电流、高PSRR、1A负载能力和紧凑封装为核心优势,覆盖便携、物联网、工业等多场景,是中小负载供电设计的实用选择。

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