WMSIC Electronic Components

ALLEGRO ACS725LLCTR-20AB-T ACS725LLCTR

ModelACS725LLCTR-20AB-T
PackageSOP-8
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 22+

Available for RFQ

Technical data

Product details

20 specifications

Core information

Product name
ALLEGRO ACS725LLCTR-20AB-T
Type
ALLEGRO
Unit
Electronic Component
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
Electronic Component
Electronic Component
ALLEGRO
Electronic Component
ACS725LLCTR-20AB-T
Electronic Component
1
Package
SOP-8
Electronic Component
120kHz
Electronic Component
Current Sensor
Electronic Component
0.1g
Electronic Component
66mV/A
Electronic Component
1
Features
Electronic Component
Electronic Component
BM0230657960
Operating Temperature
40℃~+150℃
Operating Voltage
3V~3.6V
Current Resistor
1.2mΩ

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

ACS725LLCTR-20AB-T 产品概述

一、主要参数

ACS725LLCTR-20AB-T 是美国 Allegro 推出的高集成霍尔电流传感器,适用于 ±20A 双向电流测量。关键参数如下:工作电压 3.0V–3.6V,隔离电压 2400Vrms,灵敏度 66mV/A,带宽 120kHz,响应时间 tr ≈ 4µs,电流端电阻 1.2mΩ,工作温度范围 -40℃ 到 +150℃,封装 SOP-8。该器件支持双向电流检测,输出与电流成线性关系,适合快速动态测量。

二、产品特点

  • 高灵敏度:66mV/A 的灵敏度在 20A 测量范围内提供良好的输出分辨率,便于后端 ADC 采集与处理。
  • 低功率损耗:1.2mΩ 的电流端电阻将导通损耗降到最低,有利于高电流场合的热管理。
  • 宽带宽与快速响应:120kHz 带宽与约 4µs 的响应时间,可捕捉快速电流变化,适合电机驱动与 PWM 环境。
  • 高温稳定性:-40℃ 至 +150℃ 的工作温度覆盖工业级与汽车级应用需求。
  • 隔离能力:2400Vrms 隔离电压提升系统安全性,便于高压侧与低压侧隔离测量。

三、典型应用

  • 无刷直流电机(BLDC)与有刷电机电流检测与闭环控制
  • 电源与逆变器的过流保护、负载监测
  • 电池管理系统(BMS)中的充放电电流监测
  • 逆变器、伺服驱动与电机控制器的瞬态电流测量
  • 工业控制与家电的能耗监测

四、典型电路与使用建议

  • 器件一般供电后零电流输出点接近 VCC/2,正负电流分别引起输出电压的上升或下降(请参考具体数据手册以确认静态偏置电压)。
  • 建议在电源引脚近旁布局 0.1µF 陶瓷去耦电容,减小电源噪声对测量精度的影响。
  • 在输出端使用合适的抗混叠滤波(RC 或二阶滤波),带宽与系统响应速度取舍并按 120kHz 上限设计。
  • 若需更高精度,可在 ADC 前加入差分放大或校准电路,以补偿偏置与温漂。

五、热与机械注意事项

  • 虽然器件内部电阻较低,但在持续 20A 条件下仍会产生热量,需评估 PCB 铜箔面积与散热路径,必要时增加散热铜台或金属散热体。
  • 避免通过电流通道附近布置热源或高频开关器件,以减少测量误差与温漂影响。
  • SOP-8 封装在波峰/回流焊温度与机械应力下要遵循制造商焊接工艺与储存注意事项。

六、封装与订购信息

  • 型号:ACS725LLCTR-20AB-T
  • 品牌:ALLEGRO(美国 Allegro)
  • 封装:SOP-8,便于标准 PCB 装配与自动化生产。
  • 在选型时请参考 Allegro 官方数据手册以获得完整电气特性、引脚定义与曲线图,并确认所需的合规与可靠性等级。

总体而言,ACS725LLCTR-20AB-T 在中高电流、需要隔离保护与快速响应的场合表现优异,是工业与电机控制系统中常用的霍尔电流传感解决方案。

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