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ALLEGRO ACS770KCB-150B-PFF-T ACS770KCB
Configuration
1 options
Configuration
22+
Available for RFQ
Technical data
Product details
20
specifications
Core information
- Product name
- ALLEGRO ACS770KCB-150B-PFF-T
- Type
- ALLEGRO
- Unit
- Electronic Component
- Minimum package
- 34 管
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- Electronic Component
- Electronic Component
- ALLEGRO
- Electronic Component
- ACS770KCB-150B-PFF-T
- Electronic Component
- 1
- Package
- CB-5
- Electronic Component
- 120kHz
- Electronic Component
- Current Sensor
- Electronic Component
- 6.94g
- Electronic Component
- 13.3mV/A
- Electronic Component
- 1
- Features
- positions
- Electronic Component
- BM0265124916
- Operating Temperature
- 40℃~+125℃
- Operating Voltage
- 5V
- Current
- 10mA
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
ACS770KCB-150B-PFF-T 产品概述
一、主要特点
ACS770KCB-150B-PFF-T 是美国 ALLEGRO（埃戈罗）出品的一款高精度电流霍尔传感器，可用于 AC/DC 双向电流测量。关键参数包括：测量范围至 150 A、工作电压 5 V、隔离电压 4800 Vrms、灵敏度 13.3 mV/A、带宽 120 kHz、响应时间 tr ≈ 4.1 μs、待机电流约 10 mA，电流端电阻仅 0.1 mΩ。器件在 -40 ℃ 至 +125 ℃ 工况下仍能稳定工作，集成过流保护、上电复位与欠压锁定等实用功能。
二、输出与测量原理简述
该器件采用闭环/开环霍尔效应（基于 Allegro 的封装技术），输出为单端模拟电压。在 5 V 供电下，零电流输出点约为 VCC/2（≈2.5 V），灵敏度 13.3 mV/A 表示输出相对零点每变化 1 A 对应约 13.3 mV 的电压变化。举例：满量程 ±150 A 时，输出偏移量约 ±1.995 V，正负向均可检测，适合双向电流监测与保护应用。
三、热耗与功率损耗注意
电流端电阻 0.1 mΩ 在高电流下不可忽视。最大电流 150 A 时，P = I^2·R = 150^2 × 0.0001 ≈ 2.25 W，器件与周边走线会产生较高热量，需采用合适的散热与铜厚 PCB 走线、外加散热片或导热垫，必要时对测量电流进行热工况评估和额定值退让。
四、功能特性与保护机制
- 过流保护：内部集成过流检测/保护逻辑，可用于快速断路或告警触发。
- 上电复位（POR）：上电瞬间输出保持稳定，避免误判。
- 欠压锁定（UVLO）：电源低于安全阈值时锁定输出，防止错误读数。
- 双向检测：输出相对中点偏移，可直接用于测量正反向电流，无需外部偏置电路。
五、典型应用场景
适合电机驱动与伺服控制、逆变器与太阳能逆变系统、UPS/电源系统、电池管理与充放电监控、电动工具与车载电源、工业自动化的过流检测与保护等场景，尤其适合需要高带宽、快速响应和电气隔离的功率系统测量。
六、布局与使用建议
- 电源去耦：在 VCC 附近放置 0.1 μF 与 1 μF 陶瓷电容以抑制高频噪声。
- PCB 走线：电流端采用宽铜厚走线或加铜箔，尽量缩短通过片的电流通路，降低发热。
- 滤波：若系统不需全部带宽，可在输出端加入低通滤波（截止频率远低于 120 kHz）以降低噪声。
- 校准：上电后测量零电流输出做偏置校准并考虑温漂补偿。
- 机械/封装：当前封装信息需参照 Allegro 官方资料或样片确认安装孔位与外形尺寸。
备注：本文档基于提供的主要参数汇总与通用工程实践建议，具体电气极限、引脚定义、长时间热行为与封装尺寸请以厂商正式 datasheet 为准，并在设计前进行样机验证。
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