WMSIC Electronic Components

ALLEGRO ACS37030LLZATR-040B3 ACS37030LLZATR

ModelACS37030LLZATR-040B3
PackageSOIC-6
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 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
ALLEGRO ACS37030LLZATR-040B3
Type
ALLEGRO
Minimum package
3000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
ALLEGRO
Electronic Component
ACS37030LLZATR-040B3
Electronic Component
1
Package
SOIC-6
Electronic Component
5MHz
Electronic Component
Current Sensor
Electronic Component
1g
Electronic Component
33mV/A
Electronic Component
1
Features
positions
Electronic Component
BM0264533321
Operating Temperature
40℃~+150℃
Operating Voltage
3.3V
Current Resistor
0.68mΩ
(tr)
40ns

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

ACS37030LLZATR-040B3 产品概述

一、主要参数与性能

ACS37030LLZATR-040B3 是 ALLEGRO 出品的一款板上安装型高带宽霍尔电流传感器(LZ 封装,SOIC-6 引脚)。核心电气与机械参数如下:

  • 测量范围:±40 A(双向检测)
  • 工作电压:3.3 V(单电源供电)
  • 隔离电压:3500 Vrms(器件内部磁隔离,适合高压系统)
  • 灵敏度:33 mV/A
  • 带宽:5 MHz(宽带,适合快速瞬态和脉冲电流测量)
  • 响应时间(tr):40 ns
  • 电流端电阻(初级导通电阻):0.68 mΩ(低损耗、低发热)
  • 工作温度:-40 ℃ ~ +150 ℃

以上规格使该器件在要求高速度、低功耗和安全隔离的电流检测场景中表现优秀。

二、功能特点

  • 双向电流测量:支持正/负电流检测,便于电机驱动、逆变器等双向能量流场合使用。
  • 过流保护:内建过流检测机制,可配合外部逻辑实现快速断电或限流响应。
  • 上电复位(Power-on Reset):上电状态可快速恢复到已知输出点,便于系统自检与稳态采样。
  • 宽温度范围与高隔离等级:适合工业、汽车级和电力电子应用的严苛环境。

(注:若器件零点输出为 VCC/2,则在 3.3 V 供电下静态中点约为 1.65 V;按灵敏度 33 mV/A,满量程 ±40 A 对应输出摆幅 ≈ ±1.32 V,理论输出范围约 0.33 V — 2.97 V,便于直接给 MCU/ADC 采样。)

三、典型应用场景

  • 电机控制与驱动(伺服、无刷直流电机)——需要快速检测电流峰值与短路事件。
  • 电源与逆变器——对快速瞬态、电流谐波和开关干扰有高带宽检测需求。
  • 电池管理系统(BMS)——双向充放电电流测量与过流保护。
  • 工业自动化与电力监控——高隔离要求场合的安全电流测量。

四、设计与布局注意事项

  • 去耦与电源完整性:在 VCC 引脚附近放置 0.1 μF 陶瓷去耦电容,最短引线;必要时并联 1 μF 以改善低频稳定性。
  • 布线与磁干扰:主流过导体应尽可能直线通过传感器中心,避免弯折或形成环路;附近走线应远离高速开关节点以减少感应噪声。
  • 采样与滤波:器件带宽高达 5 MHz,若目标系统采样率较低建议在输出侧加二阶或一阶低通滤波(例如 100 kHz 以下),以抑制开关噪声和平滑 ADC 输入。
  • 接地与参考:数字/模拟地要分区并在靠近器件处单点连接,保证零点基准稳定。
  • 热管理:尽管初级电阻低,但在连续大电流下仍会产生热量,PCB 铜箔需足够以利散热,并遵循制造商的焊接/回流工艺规范。

五、热与可靠性

  • 器件可工作在 -40 ℃ 到 +150 ℃,适用范围广,适合严苛工业环境。
  • 隔离等级 3500 Vrms 确保在常见工业电压下的人员与系统安全,便于简化系统绝缘设计与安规认证准备。
  • 推荐在实际应用中进行热仿真与实测,验证长时间大电流工况下的温升与漂移。

六、选型要点与优势总结

ACS37030LLZATR-040B3 以其 ±40 A 的测量范围、33 mV/A 的高灵敏度、5 MHz 的宽带以及 3500 Vrms 的高隔离能力,适合高速、电磁环境复杂且对安全隔离有较高要求的应用。SOIC-6(LZ)贴片封装便于自动化贴装与批量生产。若你的应用需要快速响应的过流告警、双向测量并且工作在 3.3 V 逻辑域内,该器件是一个兼顾性能与集成度的可靠选择。

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