WMSIC Electronic Components

ALLEGRO A4954ELPTR-T A4954ELPTR

ModelA4954ELPTR-T
PackageTSSOP-16-EP-175mil
BrandALLEGRO
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 21+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
ALLEGRO A4954ELPTR-T
Type
ALLEGRO
Minimum package
4000 个

Technical parameters

Electronic Component
Electronic Component
Electronic Component
ALLEGRO
Electronic Component
A4954ELPTR-T
Electronic Component
1
Package
TSSOP-16-EP-175mil
Electronic Component
Brushed DC Motor Driver IC
Electronic Component
0.085g
Electronic Component
1
Integrated FET
Electronic Component
H
2
Features
Current Sampling
Electronic Component
BM0265125551
Resistor
1.28Ω
Current
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.

A4954ELPTR-T 有刷直流电机驱动芯片产品概述

A4954ELPTR-T是美国ALLEGRO(埃戈罗)推出的一款集成式有刷直流电机驱动芯片,专为中小功率有刷电机的高效控制设计,兼具宽电压适应性、低静态功耗与高集成度特性,可满足工业、便携、消费电子等多领域的电机驱动需求。

一、核心定位与设计目标

该芯片的核心定位是中小功率有刷直流电机的集成驱动解决方案,通过内置H桥拓扑与功率MOSFET,替代传统“驱动IC+外部MOS管”的分立方案,实现“小体积、低功耗、高可靠性”的设计目标。其支持8V~40V宽输入电压范围,覆盖12V、24V等常见电源系统,同时具备2A连续输出电流与5A峰值电流能力,可应对电机启动、堵转等瞬时大电流场景。

二、关键性能参数解析

2.1 电流与电压特性

  • 电流能力:额定连续输出电流2A,峰值电流达5A,满足多数小型有刷电机的启动冲击与负载波动需求;
  • 宽电压范围:输入电压8V~40V,兼容车载12V、工业24V及部分高压便携电源,无需额外电源转换电路;
  • 导通电阻:内置MOSFET每臂导通电阻为1.28Ω,在集成方案中实现了合理的功率损耗控制,避免过度发热。

2.2 功耗与温度适应性

  • 静态电流(Iq):仅10μA,远低于同类芯片,待机或低负载状态下可显著降低系统功耗,尤其适合电池供电的便携设备;
  • 工作温度:-40℃~+85℃,符合工业级温度标准,可稳定工作于户外、车间等温差较大的环境。

2.3 集成度与拓扑结构

内置2组H桥拓扑,支持单电机双向驱动(正反转控制)或双电机独立驱动,灵活适配不同电机配置;同时集成功率MOSFET与驱动逻辑,无需外部MOS管及驱动电路,大幅简化PCB设计与物料清单(BOM)。

三、封装与散热特性

采用TSSOP-16-EP-175mil封装:

  • 小体积:16引脚TSSOP封装尺寸紧凑,适合高密度PCB布局(如小型仪器、便携设备);
  • 散热优化:带EP(暴露焊盘)设计,可通过焊盘直接将芯片热量传导至PCB,提升散热效率,避免高温损坏;
  • 引脚兼容性:16引脚布局与多数同类驱动芯片兼容,便于设计迭代与替换。

四、典型应用优势

  1. 简化设计:集成H桥与功率管,减少外部元件数量,降低布线复杂度,缩短研发周期;
  2. 低功耗待机:10μA静态电流延长电池设备续航,适合手持仪器、无线传感器等场景;
  3. 宽电压适配:8V~40V输入覆盖主流电源,无需额外电源转换;
  4. 工业级可靠性:-40℃~+85℃温区与集成化设计,提升 harsh环境下的工作稳定性。

五、适用场景举例

A4954ELPTR-T可广泛应用于:

  • 工业控制:小型泵、阀门、传送带等低功率电机驱动;
  • 便携设备:手持测量仪器、医疗便携设备的电机控制;
  • 智能家居:窗帘电机、智能门锁、小型家电的电机驱动;
  • 办公设备:打印机、扫描仪的走纸/扫描电机;
  • 汽车辅助系统:座椅调节、后视镜折叠等低功率车载电机(需确认汽车级认证,温区符合部分车载场景需求)。

综上,A4954ELPTR-T凭借集成度高、功耗低、宽电压适配等优势,成为中小功率有刷直流电机驱动的优选方案,可帮助工程师快速实现可靠、高效的电机控制设计。

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