WMSIC Electronic Components

XTX XTM4127AD3CT

ModelXTM4127AD3CT
PackageDFN-2X2-8L
BrandXTX
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 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
XTX XTM4127AD3CT
Type
XTX
Minimum package
500 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
XTX
Electronic Component
XTM4127AD3CT
Electronic Component
1
Package
DFN-2X2-8L
Electronic Component
Brushed DC Motor Driver IC
Electronic Component
0.209g
Electronic Component
1
Integrated FET
Electronic Component
Features
Current Sampling
Electronic Component
BM0264826342
Resistor
450mΩ
Current
2.8A
Operating Temperature
40℃~+85℃
Operating Voltage
2V~10.8V
Output Current
1.8A

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

XTM4127AD3CT 产品概述

一、产品定位与简介

XTM4127AD3CT 是 XTX(芯天下)推出的低压直流有刷电机驱动器,属于低压版 8837 系列。器件集成高侧与低侧 FET,支持单通路连续输出电流 1.8A、瞬时峰值 2.8A,工作电压范围 2.0V 至 10.8V,专为便携电源或低压系统中的小功率有刷直流电机驱动而设计。封装采用 DFN-2X2-8L,适合空间受限的应用。

二、主要规格参数

  • 集成 FET:是(片内全集成高低侧功率 MOSFET,简化驱动电路设计)
  • 工作电压:2.0 V ~ 10.8 V
  • 连续输出电流(典型):1.8 A
  • 峰值输出电流:2.8 A
  • 导通电阻(RDS(on)):450 mΩ(单 FET)
  • 静态电流(Iq):200 nA(休眠态极低电流)
  • 工作温度范围:-40 ℃ ~ +85 ℃
  • 封装:DFN-2X2-8L
  • 控制/功能:带 nsleep 控制、主动制动、交错导通保护、电流采样/调节功能(限流/保护)

三、功能亮点(应用层意义)

  1. 主动制动功能:通过器件内部开关逻辑,将电机端短置或快速回流,实现电机快速停止,适用于需快速停止或定位的场合。
  2. 交错导通保护:器件具备防止同时导通(shoot-through)的保护策略,通过合理的交叉死区或时序控制降低并联短路风险,提高系统可靠性。
  3. 电流采样/调节:支持外部电流检测或内部采样机制,可实现过流保护与限流设置,便于实现负载检测、转速保护或过载限制。
  4. 低静态功耗:休眠态静态电流仅 200 nA,非常适合电池供电设备,待机时极低的能耗延长系统续航。
  5. 低电压工作:最低 2V 的工作能力,可驱动小型锂电池、镍氢电池或低压供电模块。

四、封装与热管理建议

XTM4127AD3CT 提供 DFN-2X2-8L 小尺寸封装,便于小型化 PCB 布局。但需注意功耗与热耗散:

  • 导通损耗估算:单个 MOSFET RDS(on) 为 0.45 Ω,整桥单通路(高侧 + 低侧)近似为 0.9 Ω。以 1.8 A 连续电流计算,导通损耗为 I^2·R ≈ 1.8^2×0.9 ≈ 2.9 W(为近似值,实际因 PWM 占空比和回流路径不同而变化)。
  • 建议在 PCB 设计中使用较大铜面积的散热焊盘、散热过孔或多层电源平面,保证器件在高负载下的温升可控。
  • 在高占空比或长时间高电流工作场景下,应评估器件结温并根据需要采取外部散热措施或降低持续电流等级。

五、典型应用场景

  • 便携式电动设备(小型电动玩具、手持工具)
  • 微型机器人、巡检车、云台与相机对焦/变焦驱动
  • 智能家居小型执行机构(如电动阀门、微型门锁)
  • 无人机/航模末端小型舵机或推进器(低电压小功率场合)
  • 低功耗/电池供电系统中需要短时高瞬时启动电流的有刷电机驱动

六、使用建议与注意事项

  • nsleep 控制:通过 nsleep 引脚可将器件置入低功耗状态,建议在系统空闲或待机时拉低该引脚以最大化电池寿命;唤醒时遵循器件规定的启动序列。
  • 电流采样与限流:若需精确限流或故障检测,建议在输出回路串联精密采样电阻并配合外部 MCU 采样或利用器件内部的采样功能(根据具体引脚说明书实施)。
  • 布局注意:功率引脚尽量短、宽,散热焊盘应与地/电源层连通,提高热扩散能力;将模拟/敏感信号线远离大电流回路,减小噪声耦合。
  • 过流与短路保护:在实际应用中仍建议在系统层加入额外的保险/熔断或监测策略,以应对异常负载或意外短路情况。
  • 环境与寿命:在高温或高负载工况下注意降额使用,确保器件工作在安全结温范围之内,延长使用寿命。

七、总结

XTM4127AD3CT 是一款面向低压、有刷直流电机驱动的高度集成器件,集成 FET、支持主动制动与交错导通保护,并具备低静态电流特性。其小尺寸封装与较宽的工作电压范围,使其在便携式与空间受限的低功率电机驱动场景中具有明显优势。进行实际设计时,请结合热设计、电流采样方案与系统级保护策略,确保长期可靠运行。若需具体引脚定义、时序和典型应用电路图,请参阅器件详尽的数据手册。

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