WMSIC Electronic Components

MC33931EK

ModelMC33931EK
PackageSOIC-32-EP-300mil
BrandNXP
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 24+

Available for RFQ

Technical data

Product details

18 specifications

Core information

Product name
NXP MC33931EK
Type
NXP
Minimum package
42 管

Technical parameters

Electronic Component
Electronic Component
Electronic Component
NXP
Electronic Component
MC33931EK
Electronic Component
1
Package
SOIC-32-EP-300mil
Electronic Component
Brushed DC Motor Driver IC
Electronic Component
8.7g
Electronic Component
1
Features
Current Sampling
Electronic Component
BM0265872418
Resistor
235mΩ
Current
5A
Operating Temperature
40℃~+125℃
Electronic Component
Electronic Component
Electronic Component
42

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

MC33931EK 有刷直流电机驱动芯片产品概述

MC33931EK是恩智浦半导体推出的工业级并行控制有刷直流电机驱动芯片,专为中功率有刷电机的高效驱动设计,兼顾宽电压适配、大电流输出与极端环境可靠性,广泛应用于汽车电子、工业自动化等领域。

一、核心身份与市场定位

作为恩智浦电机驱动产品线的经典型号,MC33931EK定位于中功率有刷直流电机的集成驱动解决方案,替代传统分立器件搭建的H桥电路,大幅简化系统设计复杂度,同时提升电路集成度与可靠性。其并行控制架构适合对响应速度、控制逻辑简洁性有要求的场景,无需复杂串行协议即可实现电机正反转、启停控制。

二、关键电气性能参数

MC33931EK的核心参数覆盖电机驱动关键需求,具体如下:

  • 电源电压范围:5V~28V,兼容12V(汽车)、24V(工业)等主流电源,避免适配问题;
  • 输出电流能力:连续输出5A,峰值电流>8A(满足电机启动瞬间大电流需求),适配小型到中型有刷电机;
  • 导通电阻:每臂仅235mΩ,5A电流下每臂损耗约5.875W,显著降低发热;
  • 工作温度:-40℃~+125℃,符合工业级与汽车级标准,适应低温车间、高温发动机舱等极端环境;
  • 控制接口:并行数字输入,直接对接微控制器GPIO,简化控制电路。

三、封装与物理特性

MC33931EK采用SOIC-32-EP(小外形集成电路+暴露焊盘)封装,特性如下:

  • 尺寸:约10.3mm×7.5mm×1.75mm,符合表面贴装工艺;
  • 暴露焊盘(EP):芯片底部金属焊盘直接暴露,通过PCB铜箔/散热片快速导散5A电流产生的热量;
  • 引脚间距:300mil(7.62mm),便于手工焊接与自动化贴装,降低生产难度。

四、典型应用场景

MC33931EK适配多种中功率有刷电机场景,核心应用包括:

  1. 汽车电子:车窗升降、座椅调节、后视镜折叠、天窗电机(12V电源适配,宽温符合车载环境);
  2. 工业自动化:小型搬运机器人关节电机、传送带驱动电机、小型伺服电机(24V工业电源兼容);
  3. 消费电子:电动工具(电钻、割草机)、打印机走纸电机(低损耗提升续航);
  4. 安防设备:云台旋转、门禁闸机电机(宽温适应室内外温差)。

五、核心优势解析

相比传统分立H桥方案,MC33931EK具备以下优势:

  1. 集成度高:内置完整H桥电路,无需额外MOS管、驱动电路,减少PCB面积与物料成本;
  2. 效率优异:235mΩ低导通电阻降低功率损耗,延长电机与芯片寿命;
  3. 可靠性强:工业级宽温+暴露焊盘散热,极端环境下稳定工作;
  4. 控制简洁:并行接口对接微控制器,无需SPI/I2C协议,降低软件开发难度;
  5. 保护完善:内置过流、过温、欠压锁定功能,避免电机堵转、电源异常损坏芯片。

六、应用设计注意事项

为确保稳定工作,设计需注意:

  1. 散热设计:PCB为暴露焊盘预留≥100mm²铜箔,或加小型散热片;
  2. 电源滤波:输入并联10μF电解电容+0.1μF陶瓷电容,滤除电压波动;
  3. 控制信号:并行输入匹配5V逻辑电平,避免高压损坏;
  4. 电机匹配:选择额定电流≤5A的有刷电机,避免过载;
  5. 布线要求:功率路径(电源正极、电机输出)用≥1mm宽铜箔,减少压降与干扰。

综上,MC33931EK凭借宽电压、大电流、高可靠性与简洁控制,成为中功率有刷电机驱动的优选集成方案,适用于平衡成本、可靠性与设计复杂度的工业及汽车应用场景。

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