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ALLEGRO ACS71240LLCBTR-030B3 ACS71240LLCBTR
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
20
specifications
Core information
- Product name
- ALLEGRO ACS71240LLCBTR-030B3
- 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
- ACS71240LLCBTR-030B3
- Electronic Component
- 1
- Package
- SOIC-8
- Electronic Component
- 120kHz
- Electronic Component
- Current Sensor
- Electronic Component
- 0.131g
- Electronic Component
- 44mV/A
- Electronic Component
- 1
- Electronic Component
- BM0230057358
- Operating Temperature
- 40℃~+150℃
- Operating Voltage
- 3V~3.6V
- Current Resistor
- 1.2mΩ
- (tr)
- 1.6us
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
ACS71240LLCBTR-030B3 产品概述
一、产品简介
ACS71240LLCBTR-030B3 是美国 ALLEGRO（埃戈罗）提供的一款汽车级霍尔效应电流传感器，适用于直流与交流电流的精确测量。器件采用 SOIC-8 封装，针对车载及工业应用进行了宽温度与高可靠性设计，支持工作温度范围 -40℃ 至 +150℃。器件通过霍尔效应实现电气隔离，隔离耐压达 2.4 kVrms，兼顾测量精度与安全性。
二、主要电气参数
- 电流测量范围：±30 A（额定测量范围）
- 工作电压：3.0 V ～ 3.6 V
- 灵敏度：44 mV/A（输出电压相对于参考点随电流线性变化）
- 带宽：120 kHz（-3 dB，适合快速瞬态捕获）
- 响应时间（tr）：1.6 µs（对阶跃电流的响应）
- 电流端电阻：约 1.2 mΩ（低插入损耗）
- 隔离电压：2.4 kVrms（实现导体与测量电路间的电气隔离）
三、封装与环境适应性
- 封装形式：SOIC-8，适合集成到常见 PCB 工艺中
- 温度范围：-40℃～+150℃，满足汽车级环境及严苛热循环要求
- 品质等级：Automotive-grade（车规级），可靠性与抗振动性能符合车载应用需求
四、典型应用场景
- 汽车电源管理与电机控制（电流检测、过流保护）
- 电池管理系统（BMS）、充电桩与电动车电能监测
- 工业电源与逆变器的电流采样与故障诊断
- 开关电源、功率模块及快速瞬态测量场合
五、设计与使用建议
- 电源去耦：在器件 Vcc 引脚附近放置 0.1 µF 低 ESR 去耦电容，保证带宽内稳定工作。
- 输出滤波：依据系统噪声与带宽要求，可在输出端加小信号低通滤波（RC）以抑制高频干扰，但注意不要显著降低 120 kHz 带宽。
- 零点校准：器件输出为参考电位附近随电流成比例变化，实际设计中建议在系统上进行零偏与增益校准以提高测量精度。
- 热管理与布局：高电流通过时需关注导体发热与周边器件受热影响，建议优化 PCB 铜箔厚度与散热路径，保持低电阻连接以降低损耗。
- 隔离与安全：利用器件本体实现的隔离特性时，仍需在 PCB 走线与爬电距离上满足系统安全规范，避免高压击穿风险。
六、优势要点与注意事项
优势：汽车级可靠性、较高带宽与快速响应、低电流端电阻、良好隔离性能，适合需要实时响应与高安全性的电流测量场合。
注意事项：严格按照数据手册确定最大额定值（工作电压、温度与绝缘要求），并在设计中预留校准与滤波方案以获得最佳测量精度。
七、采购与封装信息
- 品牌：ALLEGRO（美国埃戈罗）
- 型号：ACS71240LLCBTR-030B3
- 封装：SOIC-8
如需样片或批量采购，请参考制造商数据手册以获取完整电气特性、引脚定义与典型应用电路。若需要，我可进一步提供典型接线示意、滤波计算或与 MCU 的接口建议。
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