ACS725LMA中文资料High Accuracy Hall-Effect-Based Current Sensor with 265 µΩ Integrated Conductor数据手册Allegro规格书

描述 Description

The Allegro ACS724/ACS725 family of current sensor ICs are economical and precise solutions for AC or DC current sensing in industrial, automotive, consumer, and communications systems. They are offered in multiple compact packages that offer high level of integration that fits various applications needs.. These devices consist of a precise, low-offset, linear Hall sensor circuit with a copper conduction path located near the surface of the die. Applied current flowing through this copper conduction path generates a magnetic field which is sensed by the integrated Hall IC and converted into a proportional voltage. The current is sensed differentially in order to reject stray fields, improving accuracy in magnetically noisy environments. The current conductor is inherently isolated from the device signal leads due to it’s internal structure which results in high isolation voltage rating for the various offered packages. All of these devices offer very low ohmic losses as low as 265 µΩ.

The ACS724/ACS725 devices are provided in small, low-profile surface-mount SOIC8 (LC) and custom SOIC16 packages (MA & MC). The leadframe is plated with 100% matte tin, which is compatible with standard lead (Pb) free printed circuit board assembly processes.

The MA & LC packages offer high Isolation voltage with a max nominal current of 50A, while the MC (20Mil) package offers up to 90A nominal current measurement. These current ratings vary depending on the ambient operating temperatures.

特性 Features

• AEC-Q100 qualified
• Differential Hall sensing rejects common-mode fields
• 1.2 mΩ primary conductor resistance for low power loss and high inrush current withstand capability
• Integrated shield virtually eliminates capacitive coupling from current conductor to die, greatly suppressing output noise due to high dv/dt transients
• Industry-leading noise performance with greatly improved bandwidth through proprietary amplifier and filter design techniques
• High-bandwidth 120 kHz analog output for faster response times in control applications
• Filter pin allows user to filter the output for improved resolution at lower bandwidth
• Patented integrated digital temperature compensation circuitry allows for near closed loop accuracy over temperature in an open loop sensor
• Filter pin simplifies bandwidth limiting for better resolution at lower frequencies
• 5 V, single supply operation

应用 Application

• Motor control
• DC/DC Converters
• xEV onboard chargers (OBC)
• Solar inverters
• Load detection and management
• Switched mode power supplies
• Overcurrent fault protection

简介

ACS725LMA属于传感器变送器的电流传感器。由制造生产的ACS725LMA电流传感器电流传感器用于检测并响应电线或电路中的电流变化。传感器类型包括电流开关式、磁通门式、霍尔效应式、电流指示器、电流传感器、磁调制器、磁阻式和变压器式（带调节功能），电流检测范围可编程设置在 5mA 至 2500A 之间，可用于测量交流或直流电流。