WMSIC Electronic Components

ALLEGRO A3959SLPTR-T A3959SLPTR

ModelA3959SLPTR-T
PackageTSSOP-28-EP
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 24+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
ALLEGRO A3959SLPTR-T
Type
ALLEGRO
Minimum package
4000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
ALLEGRO
Electronic Component
A3959SLPTR-T
Electronic Component
1
Package
TSSOP-28-EP
Electronic Component
Brushed DC Motor Driver IC
Electronic Component
0.299g
Electronic Component
1
Integrated FET
Electronic Component
Features
Current Sampling
Electronic Component
BM0265125552
Resistor
270mΩ
Current
6A
Operating Temperature
20℃~+85℃
Operating Voltage
4.5V~5.5V
Electronic Component
Electronic Component

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

A3959SLPTR-T 电机驱动器产品概述

一、核心身份与市场定位

A3959SLPTR-T是美国埃戈罗(ALLEGRO)推出的集成式DMOS并联电机驱动器,专为需要高电流驱动、紧凑设计的小型电机应用打造。产品整合功率DMOS FET,无需外部功率管即可实现高效驱动,适配4.5V~5.5V低压系统,是消费电子、小型工业设备、机器人等领域的理想驱动方案。

二、关键性能参数解析

产品核心参数直接决定应用边界,具体表现为:

  1. 峰值电流能力:支持6A峰值输出,可应对小型电机启动时的瞬间电流冲击(通常启动电流为额定电流的2~3倍),覆盖多数小型直流电机、步进电机的驱动需求;
  2. 工作电压范围:4.5V~5.5V,与常见的5V电源(如USB 5V、单片机核心电压)完全兼容,无需额外电压转换电路;
  3. 导通电阻:270mΩ(典型值),远低于离散功率管组合的导通损耗,可有效降低器件发热,提升系统效率;
  4. 工作温度范围:-20℃~+85℃,覆盖室内外一般环境(如低温环境下的小型设备、高温环境下的工业控制单元),可靠性满足多数场景需求。

三、集成特性与设计优势

A3959SLPTR-T的核心优势源于高度集成化设计,具体体现在:

  • 内置DMOS FET:无需外部功率MOS管,减少BOM成本与PCB空间,简化电路布局(仅需控制电路、电源与电机接口);
  • DMOS并联结构:通过内部并联设计提升电流承载能力,同时保持低导通电阻,兼顾大功率与高效能;
  • 暴露焊盘(EP)封装:TSSOP-28-EP封装的暴露焊盘直接焊接到PCB散热铜箔,显著提升热传导效率,避免器件过热;
  • 基础保护集成:内置过流检测(通过内部电阻采样),可配合外部电路实现过流关断,提升系统可靠性(ALLEGRO电机驱动器常见设计逻辑)。

四、典型应用场景

基于性能参数与设计特性,A3959SLPTR-T适合以下场景:

  1. 小型机器人:桌面机器人、教育机器人的伺服电机、直流驱动电机(如关节电机、移动轮电机);
  2. 办公设备:打印机、复印机的走纸电机、扫描电机(需要稳定电流驱动与紧凑设计);
  3. 小型家电:手持搅拌机、电动工具(如小型电钻)的电机驱动(应对启动瞬间大电流);
  4. 工业控制:小型执行器、阀门控制器(需要可靠的低压驱动与宽温度适应)。

五、封装与可靠性设计

  • 封装类型:TSSOP-28-EP,表面贴装封装,体积紧凑(符合小型设备的空间要求),引脚间距适合自动化贴装;
  • 散热设计:暴露焊盘(EP)可通过PCB铜箔快速散发热量,配合工作温度范围,无需额外散热片即可满足多数应用的热需求;
  • 可靠性:ALLEGRO的工业级设计标准,结合宽温度范围与基础保护功能,适合长期稳定运行。

六、选型与使用注意事项

  1. 电流匹配:需确认电机的额定电流≤2A(持续电流约为峰值的1/3),峰值电流≤6A,避免过载;
  2. 电源设计:电源需提供足够的电流能力(如≥2A持续),并增加10μF以上滤波电容稳定电压;
  3. 散热设计:PCB需在EP焊盘下方布置至少10mm²铜箔,必要时增加过孔连接多层铜箔,提升散热效率;
  4. 控制接口:需与单片机、FPGA等控制单元的输出电平匹配(通常3.3V/5V兼容),避免电压不匹配损坏器件。

A3959SLPTR-T通过集成化与高性能设计,平衡了成本、体积与效率,是小型电机驱动场景的高性价比选择。

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