WMSIC Electronic Components

Mingda Micro MD85EF0PA1

ModelMD85EF0PA1
PackageSOT-89-3L
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
MD85EF0PA1
Type
Mingda Micro
Minimum package
1000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
4mV@(1mA)
Electronic Component
Electronic Component
Electronic Component
MD85EF0PA1
Electronic Component
1
Package
SOT-89-3L
Electronic Component
Linear Regulator(LDO)
Electronic Component
0.09g
Electronic Component
1
Electronic Component
BM0264548267
Operating Temperature
40℃~+85℃
Operating Voltage
40V
Output
Electronic Component
Output Voltage
15V
Output Current
300mA
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.

MD85EF0PA1 线性稳压器(LDO)产品概述

MD85EF0PA1是明达微推出的一款高压输入固定输出线性稳压器(LDO),专为需要高输入电压、低静态电流、低噪声供电的场景设计,具备工业级温度适应性与完善的保护机制,可满足工业控制、通信设备等领域的电源转换需求。

一、产品定位与核心优势

本产品定位为高压小电流固定输出LDO,核心优势体现在以下三点:

  1. 宽输入电压兼容:最大输入电压达40V,可适配24V工业电源、36V光伏板等常见高压输入场景;
  2. 超低功耗设计:仅1.5μA的静态电流,待机状态下几乎不消耗额外功率,适合电池供电或低功耗系统;
  3. 低噪声高效能:79dB的电源纹波抑制比(100Hz)有效滤除低频纹波,4mV(1mA负载)的小压差进一步提升转换效率,减少发热。

二、关键性能参数解析

1. 输入输出特性

  • 最大输入电压:40V(支持24V、36V等主流高压输入);
  • 固定输出电压:15V(无需外部电阻调整,简化电路设计);
  • 连续输出电流:300mA(满足多数中小功率负载需求,如传感器、射频模块);
  • 压差表现:4mV@1mA(小负载下压差极小,接近理想稳压效果,低功耗场景下效率显著)。

2. 纹波抑制与噪声

PSRR(电源纹波抑制比)为79dB@100Hz,表明对100Hz低频纹波的抑制能力较强,可降低电源噪声对敏感电路(如模拟前端、射频收发器)的干扰,提升系统信号质量。

3. 静态电流与功耗

静态电流仅1.5μA,远低于传统LDO(通常数十μA级别),即使系统处于待机状态,也能最大程度延长电池续航时间,适合无线传感器、手持设备等电池供电场景。

4. 温度适应性

工作温度范围为**-40℃~+85℃**,符合工业级温度标准,可在低温(如北方户外设备)、高温(如密闭机箱内)环境下稳定工作,无需额外散热设计。

三、封装与物理特性

MD85EF0PA1采用SOT-89-3封装,这是一种紧凑的表面贴装封装,尺寸约为2.9mm×2.6mm×1.5mm(典型值),引脚布局为3引脚(输入IN、输出OUT、地GND),便于PCB布局优化,适合高密度电路设计(如小型工业模块、便携式设备)。

四、保护机制与可靠性

本产品内置过流保护(OCP) 功能:当输出电流超过阈值(约350mA~400mA,典型值)时,自动进入限流模式,防止负载短路或过载导致器件损坏;同时,工业级温度范围与稳定的电气特性,确保长期工作可靠性,降低系统维护成本。

五、典型应用场景

MD85EF0PA1适用于以下场景:

  1. 工业控制模块:24V工业电源转15V,为PLC输入输出模块、温度传感器供电;
  2. 电池供电设备:无线传感器节点、手持测试仪器,低静态电流延长待机时间;
  3. 通信设备:为射频收发器、模拟信号处理电路供电,高PSRR降低噪声干扰;
  4. 车载辅助电路:车载监控摄像头、胎压监测系统的辅助电源(适应-40℃~+85℃环境)。

六、典型应用电路说明

典型应用电路仅需少量外部元件,设计简洁:

  • 输入侧:IN引脚串联0.1μF陶瓷电容(C1)到地,滤除高频噪声;
  • 输出侧:OUT引脚串联1μF陶瓷电容(C2)到地,稳定输出电压;
  • 地引脚:GND直接连接PCB地,需注意布局时减少地环路,避免噪声耦合。

(注:若输入电压波动较大,可适当增加输入电容容量至1μF,进一步优化纹波抑制效果。)

MD85EF0PA1凭借高压输入、超低静态电流、高PSRR与工业级可靠性,成为工业控制、通信、电池供电等领域中小功率稳压的优选器件,可有效简化电源设计,提升系统稳定性。

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