WMSIC Electronic Components

MSKSEMI DRV8870DDAR(MS) DRV8870DDAR

ModelDRV8870DDAR(MS)
PackageSOP-8-EP
BrandMSKSEMI
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 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
MSKSEMI DRV8870DDAR(MS)
Type
MSKSEMI
Minimum package
4000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
MSKSEMI
Electronic Component
DRV8870DDAR(MS)
Electronic Component
1
Package
SOP-8-EP
Electronic Component
Brushed DC Motor Driver IC
Electronic Component
0.205g
Electronic Component
1
Integrated FET
Electronic Component
H
1
Features
Current Sampling
Electronic Component
BM0264464045
Resistor
600mΩ
Current
3.5A
Operating Temperature
40℃~+85℃
Static Current(Iq)
10uA

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

DRV8870DDAR(MS) — 直流有刷电机驱动芯片产品概述

一、产品简介

DRV8870DDAR(MS)由MSKSEMI(美森科)推出,是一款集成FET的全桥(H桥)DMOS有刷电机驱动芯片。器件工作电压范围宽,适配8V至40V供电,单通道H桥结构,峰值驱动电流可达3.5A,典型持续驱动能力可满足约2A负载要求。封装为SOP-8-EP,芯片内部集成保护与电流调节功能,适合对成本、体积和保护性能有要求的中低功率电机驱动场景。

二、主要性能参数

  • 集成FET:是(内部高、低侧DMOS)
  • H桥数量:1
  • 峰值电流:3.5A
  • 持续输出:约2A(受封装散热限制)
  • 单FET导通电阻 RDS(ON):600 mΩ(典型)
  • 静态电流(Iq):10 μA(低功耗休眠/待机特性)
  • 工作温度范围:-40 ℃ ~ +85 ℃
  • 封装:SOP-8-EP(带散热焊盘)
  • 品牌:MSKSEMI(美森科)

三、功能特性

  • 交错导通保护(防止直通/短路击穿)保证开关过程安全可靠;
  • 电流采样/调节功能,支持对电机电流的检测与限流(可通过外部电阻或调制控制实现电流限制及精细调节);
  • 欠压锁定(UVLO)、热关断及过流保护,提升系统可靠性;
  • 支持PWM驱动与电流整流/回流控制,兼顾动态性能与热管理;
  • 低功耗休眠/唤醒模式,静态电流仅约10 μA,便于电池供电系统应用。

四、典型应用场景

  • 工业自动化中的小型执行器与阀门驱动;
  • 消费电子和家电中风扇、挡板、电磁阀等有刷电机控制;
  • 小型移动平台与服务机器人驱动单元;
  • 打印机、传真机、光学镜头驱动等位置/速度控制场合。

五、设计与使用建议

  • 热管理:单FET导通电阻600 mΩ,H桥两侧导通时总R约1.2 Ω;在2A连续情况下理论功耗较高(P≈I^2·R_total),需在PCB上采用大焊盘、充足散热铜箔与过孔,并充分利用SOP-8-EP的底部散热焊盘连接至地平面以保证连续输出能力。
  • 电容与浪涌保护:在VM端靠近芯片放置低ESR旁路电容(建议高频陶瓷)与大容量电解/钽电容以抑制浪涌;在有强干扰或反向浪涌场合考虑并联TVS二极管。
  • 布局要点:电源回路短、宽,减少寄生阻抗,信号地与功率地适当分离并在散热焊盘处汇流;PWM输入与逻辑地线靠近,避免长走线引入干扰。
  • 驱动策略:对热敏感场合优先采用PWM限流或分时驱动以降低平均功耗;利用休眠功能在空闲时降低静态功耗。
  • 保护与测试:在开发阶段进行过流/过温测试,验证在目标环境下的连续驱动能力与保护响应;根据应用选择合适的外部电阻或检测电路以实现所需的限流精度。

六、总结

DRV8870DDAR(MS)是一款功能全面、适用面广的单通道有刷电机驱动器,适合8V–40V供电系统中对峰值驱动能力(3.5A)与中等连续电流(约2A)要求的场合。器件集成了交错导通保护、电流采样/调节、欠压及热保护等实用功能,并采用SOP-8-EP封装便于热管理与量产焊接。选型时需关注PCB散热设计与实际工作占空比,以保证长期稳定运行。

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