Quality Standards and Environmental Certifications

ACS770xCB：带 100 μΩ 电流导体的增强散热功能、全集成、基于霍尔效应的高精度线性电流传感器 IC

ACS770 数据表
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Description

Allegro™ ACS770 电流传感器 IC 系列可为交流或直流电流感测提供经济实惠且精确的解决方案。典型应用包括电动机应用、负载检测及管理、电源和直流-直流转换器控制、换流器控制和过流保护。

该设备由一个低偏移的精密线性霍尔电路组成，其铜制的电流路径靠近晶片的表面。流过该电流路径的电流会产生一个磁场，该磁场以低磁滞核为中心，由霍尔 IC 转换成同比例的电压输出。通过将磁性信号靠近霍尔传感器，实现器件精度优化。精确的、成比例输出电压由稳定斩波型低偏置 BiCMOS 霍尔 IC 提供，该 IC 出厂时已进行精确度编程。同比例数字温度补偿技术大幅改善 IC 准确率和温度稳定性，而不影响模拟输出的高带宽操作。

Allegro 专有的集成屏蔽技术提供的对电流导体 dV/dt 信号和杂散电场的高耐受力，确保高侧、高电压应用中的低输出电压纹波和低偏置漂移。

当增加铜制一级导电通路（用于电流采样）的电流时（由端子 4 到端子 5），器件的输出具有正斜率 （双向器件 ＞VCC/2）。该导电通路的内电阻典型值是 100 μΩ，功率损耗较低。

铜线的厚度允许器件在高过电流条件下运行。电流路径的接线端与信号引线（针 1 到 3）之间电气隔离。这让 ACS770 传感器 IC 系列可用于那些要求电气绝缘却未使用光电绝缘器或其它昂贵绝缘技术的应用。

器件在出厂装运前已完全校准。ACS770 系列是无铅产品。所有的引线均镀以 100% 雾锡，封装内无任何铅存在。大尺寸引脚框由无氧铜制成。

Top Features

  • 凭借新的偏置和灵敏度分段线性数字温度补偿，实现行业领先的总输出准确性
  • 通过专利放大器和滤波器设计工艺实现行业领先的噪音性能
  • 120 kHz 典型带宽
  • 对应步进输入电流，输出上升时间为 4.1 μs
  • 集成屏蔽可大幅减少因高 dV/dt 信号导致电流导体至晶片的电容耦合，并可防止高端、高电压应用中的偏置漂移。
  • 通过在完整的操作温度范围内进行数字编程和补偿增益和偏置，大幅改善总输出错误
  • 小型封装尺寸，安装简便
  • 高可靠性的单片霍尔 IC
  • 超低功率损耗：内部传导电阻 100 µΩ
  • 绝缘设计可实现高电压系统中经济实惠的高端电流感测
  • 4.5 至 5.5 伏特，单电源操作
  • 输出电压与交流或直流电流成比例
  • 出厂时已经校准，确保精确度
  • 极度稳定的输出偏移电压
  • VCC低于规定参数时进行欠压锁定
  • 符合 AEC-Q100 汽车级标准
  • 通过 UL 认证，文件编号 E316429
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Part Number Specifications and Availability

Part Number Package Type Temperature RoHS
Compliant		 Part Composition /
RoHSData		 Comments Samples Check Stock
ASEK770ECB-200B-T DEMO BOARD -20°C to 85°C No -- Contact your
local sales rep		 Check
Distributor Stock
ASEK770ECB-200U-T DEMO BOARD -20°C to 85°C No -- Contact your
local sales rep		 Check
Distributor Stock
ASEK770KCB-150B-T DEMO BOARD -20°C to 85°C No -- Contact your
local sales rep		 Check
Distributor Stock
ASEK770KCB-150U-T DEMO BOARD -20°C to 85°C No -- Contact your
local sales rep		 Check
Distributor Stock
ASEK770LCB-050B-T DEMO BOARD -20°C to 85°C No -- Contact your
local sales rep		 Check
Distributor Stock
ASEK770LCB-050U-T DEMO BOARD -20°C to 85°C No -- Contact your
local sales rep		 Check
Distributor Stock
asek770lcb - 100 b - t DEMO BOARD -20°C to 85°C No -- Contact your
local sales rep		 Check
Distributor Stock
ASEK770LCB-100U-T DEMO BOARD -20°C to 85°C No -- Contact your
local sales rep		 Check
Distributor Stock
ACS770ECB-200B-PFF-T 5-lead CB -40°C to 85°C Yes View Data Contact your
local sales rep		 Check
Distributor Stock
ACS770ECB-200B-PSF-T 5-lead CB -40°C to 85°C Yes View Data Contact your
local sales rep		 Check
Distributor Stock
ACS770ECB-200U-PFF-T 5-lead CB -40°C to 85°C Yes View Data Contact your
local sales rep		 Check
Distributor Stock
ACS770ECB-200U-PSF-T 5-lead CB -40°C to 85°C Yes View Data Contact your
local sales rep		 Check
Distributor Stock
ACS770ECB-400B-PFF-T 5-lead CB -40°C to 85°C Yes View Data Contact your
local sales rep		 Check
Distributor Stock
ACS770ECB-400U-PFF-T 5-lead CB -40°C to 85°C Yes View Data Contact your
local sales rep		 Check
Distributor Stock
ACS770ECBTV-250B-PFF-T 5-lead CB -40°C to 85°C Yes View Data Contact your
local sales rep		 Check
Distributor Stock
ACS770ECBTV-250U-PFF-T 5-lead CB -40°C to 85°C Yes View Data Contact your
local sales rep		 Check
Distributor Stock
ACS770KCB-150B-PFF-T 5-lead CB -40°C to 125°C Yes View Data Contact your
local sales rep		 Check
Distributor Stock
ACS770KCB-150B-PSF-T 5-lead CB -40°C to 125°C Yes View Data Contact your
local sales rep		 Check
Distributor Stock
ACS770KCB-150B-PSS-T 5-lead CB -40°C to 125°C Yes View Data Contact your
local sales rep		 Check
Distributor Stock
ACS770KCB-150U-PFF-T 5-lead CB -40°C to 125°C Yes View Data Contact your
local sales rep		 Check
Distributor Stock
ACS770KCB-150U-PSF-T 5-lead CB -40°C to 125°C Yes View Data Contact your
local sales rep		 Check
Distributor Stock
ACS770KCB-167B-PFF-T 5-lead CB -40°C to 125°C Yes View Data Contact your
local sales rep		 Check
Distributor Stock
ACS770KCBTV-050B-PFF-T 5-lead CB -40°C to 125°C Yes View Data Contact your
local sales rep		 Check
Distributor Stock
ACS770KCBTV-150U-PSF-T 5-lead CB -40°C to 125°C Yes View Data Contact your
local sales rep		 Check
Distributor Stock
ACS770KCBTV-167B-PFF-T 5-lead CB -40°C to 125°C Yes View Data Contact your
local sales rep		 Check
Distributor Stock
ACS770LCB-050B-PFF-T 5-lead CB -40°C to 150°C Yes View Data Contact your
local sales rep		 Check
Distributor Stock
ACS770LCB-050U-PFF-T 5-lead CB -40°C to 150°C Yes View Data Contact your
local sales rep		 Check
Distributor Stock
ACS770LCB-100B-PFF-T 5-lead CB -40°C to 150°C Yes View Data Contact your
local sales rep		 Check
Distributor Stock
ACS770LCB-100B-PSF-T 5-lead CB -40°C to 150°C Yes View Data Contact your
local sales rep		 Check
Distributor Stock
ACS770LCB-100B-PSS-T 5-lead CB -40°C to 150°C Yes View Data Contact your
local sales rep		 Check
Distributor Stock
ACS770LCB-100U-PFF-T 5-lead CB -40°C to 150°C Yes View Data Contact your
local sales rep		 Check
Distributor Stock
ACS770LCB-100U-PSF-T 5-lead CB -40°C to 150°C Yes View Data Contact your
local sales rep		 Check
Distributor Stock
ACS770LCBTV-100B-PSS-T 5-lead CB -40°C to 150°C Yes View Data Contact your
local sales rep		 Check
Distributor Stock

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Packaging

封装

CB PFF 封装 .stp 模型

CB PSF 封装 .stp 模型

CB PSS 封装 .stp 模型

Design Support Tools

设计支持工具

Certificates of Compliance

CB Certificates

Allegro MicroSystems，LLC提供Gerber文件仅供参考。任何材料，信息或说明均按原样提供，不附带任何形式的担保。用户有责任针对用户的特定应用优化任何印刷电路板（PCB）布局以及任何组件的选择。

见解和创新

Current Sensors

Hysteresis Mitigation in Current Sensor ICs Using Ferromagnetic Cores

Traditional open loop current sensor ICs, like the Allegro ACS758CB and ACS770CB families, have ferromagnetic cores that act as magnetic concentrators. They concentrate the magnetic flux density, the B field, generated by current flowing through a conductor onto the Hall-effect sensor IC.

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