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Product Attributes

Introduction

The Allegro ACS75x series current sensor ICs provide an economical and precise solution for current sensing in industrial, automotive, commercial, and communication systems. The device package facilitates customer implementation. Typical applications include motor control, load detection and management, power supplies, and overcurrent fault protection. The device consists of a precision, low-offset linear Hall circuit and a copper conduction path located near the die. Current flowing through the copper conduction path generates a magnetic field, which the Hall IC converts into a proportional voltage. Device accuracy is optimized by placing the magnetic signal in close proximity to the Hall sensor. The low-offset, chopper-stabilized BiCMOS Hall IC provides precise proportional voltage output and is factory-programmed for accuracy. When current increases (flowing from terminal 4 to terminal 5, which is the path used for current sampling), the device output has a positive slope (>VCC / 2). The conduction path has a typical internal resistance of 130 μΩ, enabling low power dissipation. The thickness of the copper conductor allows the device to withstand overcurrent conditions up to 5 times the rated current. The terminals of the conduction path are electrically isolated from the signal pins (pins 1 through 3). This allows the ACS75x series sensor ICs to be used in applications requiring electrical isolation without the need for optoisolators or other costly isolation techniques. The device is fully calibrated prior to shipment. The ACS75x series is lead-free (Pb). All leads are plated with 100% matte tin, and the package interior is lead-free. The heavy-gauge lead frame is made of oxygen-free copper.

Features

• Monolithic Hall-effect IC, high reliability
• Single +5V supply
• Isolation voltage between terminals 4/5 and pins 1/2/3: 3 kVRMS for 1 minute
• Bandwidth: 50 kHz
• Automotive temperature range
• Factory end-of-line gain and offset adjustment
• Ultra-low power consumption: internal conductor resistance 130 μΩ
• Output proportional to supply voltage
• Extremely stable output offset voltage
• Compact package, easy to mount
• Output proportional to AC and DC currents

Applications

• Motor control
• Load detection and management
• Power supply
• Overcurrent fault protection