WMSIC Electronic Components

Mingda Micro MD7602D33

ModelMD7602D33
PackageTO-252
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 23+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
MD7602D33
Type
Mingda Micro
Minimum package
2500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
1.5V@(1A)
Electronic Component
Electronic Component
Electronic Component
MD7602D33
Electronic Component
1
Package
TO-252
Electronic Component
Linear Regulator(LDO)
Electronic Component
0.385g
Electronic Component
1
Electronic Component
BM0264936505
Operating Temperature
40℃~+85℃@(Ta)
Operating Voltage
40V
Output
Electronic Component
Output Voltage
3.3V
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.

MD7602D33 产品概述

一、简介

MD7602D33 是明达微推出的一款高耐压、低静耗的正极性线性稳压器(LDO),固定输出为 3.3V、最大输出电流 1A。器件采用 TO-252(DPAK)封装,适合对稳定电源、高抑制纹波与保护功能有要求的车载、通信、工业和消费电子电源模块。

二、主要性能特点

  • 输入工作电压最高可达 40V,适配宽范围输入场景。
  • 固定输出 3.3V,最大输出电流 1A。
  • 压差(Dropout):1.5V @ 1A,保证高负载下的输出稳定性。
  • 电源纹波抑制比(PSRR):54.5 dB @ 1 kHz,有效抑制电源纹波和干扰。
  • 低静态电流 Iq:1.6 µA,适合待机功耗敏感的系统。
  • 集成使能控制(EN),便于系统电源管理与电源顺序控制。
  • 完善的保护功能:过流保护、短路保护与热关断(thermal shutdown),提高系统可靠性。
  • 工作温度范围:-40 ℃ ~ +85 ℃(Ta),满足工业级工作环境要求。
  • 单通道、固定输出,封装便于散热与安装。

三、详细规格(要点)

  • 输出电压:3.3V(固定)
  • 输出电流:最大 1A
  • 最大输入电压:40V
  • 压降:1.5V @ 1A
  • PSRR:54.5 dB @ 1 kHz
  • 静态电流(Iq):1.6 µA
  • 输出极性:正极
  • 输出通道数:1
  • 功能:过流保护、短路保护、热关断、使能控制
  • 封装:TO-252(DPAK)

四、保护与可靠性

MD7602D33 内置多重保护机制:在过流或短路情形下限制输出电流,避免负载或器件损坏;当结温超限时触发热关断以保护芯片并在温度下降后自动恢复。使能引脚可实现软启或外部断电控制,方便电源管理和系统级保护策略。

五、热设计与封装

TO-252 封装具有良好散热能力,建议在 PCB 设计时在器件下方和铜箔上扩展散热区,并通过过孔与底层铜层联通以降低结温。高压差和大电流工作下需考虑功耗与结温,合理评估功耗(P = (Vin - 3.3V) × Iout)并采取散热措施。

六、典型应用场景

  • 工业控制与传感器供电
  • 通信设备、基站模块辅助电源
  • 汽车电源前端(符合宽压输入需求)
  • 消费类电子低功耗恒定电压供给
  • 电池供电系统中的后级稳压

七、建议电路与 PCB 布局

  • 在输入端与输出端放置低 ESR 电容(常见建议:输入 1 µF~10 µF,输出至少 1 µF 陶瓷),靠近器件引脚以保证稳定性与瞬态响应。
  • 使能引脚应通过上拉或下拉电阻按系统需求设计,必要时并联 RC 实现软启动。
  • 布局时将 GND 平面与器件散热片良好连接,减少热阻与电源回流路径电感,抑制噪声传播。
  • 对长期高功耗工况,评估结温并增加铜面或散热片。

MD7602D33 以其高耐压输入、低静耗、高 PSRR 和完善的保护特性,适合需要稳定 3.3V 电源且对可靠性、抗干扰有要求的多种应用场景。若需更详细的电气特性曲线、引脚定义和典型应用电路,请参考明达微官方数据手册。

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