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ALLEGRO ACS711KLCTR-25AB-T ACS711KLCTR
Configuration
1 options
Configuration
Date code within 2 years
Available for RFQ
Technical data
Product details
20
specifications
Core information
- Product name
- ALLEGRO ACS711KLCTR-25AB-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
- ACS711KLCTR-25AB-T
- Electronic Component
- 1
- Package
- SOIC-8
- Electronic Component
- 100kHz
- Electronic Component
- Current Sensor
- Electronic Component
- 0.197g
- Electronic Component
- 55mV/A
- Electronic Component
- 1
- Electronic Component
- BM0230804391
- Operating Temperature
- 40℃~+125℃
- Operating Voltage
- 3V~5.5V
- Current
- 4mA
- 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.
ACS711KLCTR-25AB-T 产品概述
一、产品简介
ACS711KLCTR-25AB-T 是 ALLEGRO（美国埃戈罗）推出的一款高精度、双向霍尔电流传感器，采用 SOIC-8 封装。器件在 -40℃ 至 +125℃ 工作温度范围内稳定运行，支持 ±25A 电流测量，输出为与供电电压成比例的模拟电压，适用于需要隔离测量与快速响应的电流监测场景。
二、主要性能参数
- 测量范围：25A（双向测量）
- 电流端电阻（导流端）：1.2 mΩ（低功耗导体路径）
- 灵敏度：55 mV/A（Ratiometric，零电流输出接近 VCC/2）
- 工作电压：3.0 V ～ 5.5 V
- 待机电流：4 mA（典型）
- 带宽：100 kHz（-3 dB）
- 响应时间 (tr)：约 3.5 μs
- 工作温度范围：-40℃ ～ +125℃
- 封装：SOIC-8，便于表面贴装与自动化生产
三、输出特性与计算
在典型 5 V 供电下，零电流输出约为 2.5 V。输出与电流的线性关系为： Vout = VCC/2 + I × 55 mV/A 例如在 +25 A 时，输出相对于 VCC/2 增加约 1.375 V（约 3.875 V）；在 -25 A 时下降约 1.375 V（约 1.125 V）。
四、典型应用场景
- 电机驱动与电流检测（无刷电机、直流电机）
- 电池管理系统（BMS）与电池充放电监测
- 开关电源与逆变器的输出电流监测与过流保护
- 工业控制与功率测量模块
- 汽车电子（满足宽温度工作）与消费类电源管理
五、设计与使用建议
- 电源去耦：在 VCC 与 GND 引脚靠近焊盘放置 0.1 μF 至 1 μF 的陶瓷去耦电容，保证瞬态响应。
- 滤波与带宽权衡：器件本身带宽高达 100 kHz，如需抑制噪声可在输出端加入低通滤波器，但会影响瞬态响应。
- 热管理：导流路径电阻为 1.2 mΩ，满量程 25 A 时功耗约为 P = I^2·R ≈ 0.75 W，长期高电流运行需做 PCB 散热设计（加大铜面积、散热槽或外部散热片）。
- 布线要求：保持导流通道直线且靠近传感器主体，避免邻近高电流回路产生额外磁干扰。地线与模拟地分离并在合适位置汇流。
- 校准与偏置：由于零偏随温度略有漂移，精密测量应采用温度校准或在系统层面通过采样校正零点。
六、可靠性与选型参考
器件适用于工业与汽车级温度范围，封装小巧便于批量贴装。选型时需关注系统最大 RMS 电流与峰值电流、热耗散能力以及所需带宽与响应速度。对于需要更低电压降或更高精度的场合，可对比更高量程或采用外部分流器配合更高精度放大器的方案。
总结：ACS711KLCTR-25AB-T 结合了宽温度特性、较高带宽与快速响应，适合高动态电流检测与保护应用，但在高电流长时间工作时需重视散热与 PCB 布局以保证长期稳定性。
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