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ACS773LCB-100B-PFF-T

ACS773LCB-100B-PFF-T

Allegro MicroSystems
Related Allegro device in the same general product family that provides different sensitivity and current-range tradeoffs.
Active3,556 in stock

Overview

The ACS773LCB-100B-PFF-T is a high-accuracy, linear Hall-effect current sensor IC featuring a 100 micro-ohm internal conductor for ultra-low power loss. It provides reinforced galvanic isolation up to 4800 Vrms and is AEC-Q100 Grade 1 qualified for demanding automotive and industrial environments. This bidirectional sensor operates on a 3V to 3.6V supply and delivers a ratiometric analog output with a 200kHz bandwidth.

Why Choose This Part

This sensor offers a high bandwidth of 200kHz and a fast 2.5us response time, making it suitable for high-speed switching applications. The integrated shield provides excellent immunity to dV/dt transients, while the 100 micro-ohm primary conductor minimizes self-heating during high-current operation.

Applications

EV Traction Inverters
Monitoring high-current phases in electric vehicle motor drives with minimal thermal overhead.
DC-to-DC Converters
Providing feedback loops for high-frequency power conversion in automotive and industrial battery systems.
Battery Management Systems (BMS)
Measuring charge and discharge cycles in large battery packs with high isolation requirements.
Industrial Motor Control
Detecting overcurrent conditions and managing torque in heavy-duty automated machinery.

Key Specifications

Output Ratiometric, Voltage
Frequency DC ~ 200kHz
Linearity +/-0.9%
Sensitivity 13.2mV/A
Sensor Type Hall Effect
Polarization Bidirectional
For Measuring AC/DC
Mounting Type Through Hole
Response Time 2.5us
Package / Case 5-CB Formed Leads, PFF
Voltage - Supply 3V ~ 3.6V
Current - Sensing 100A
Number of Channels 1
Operating Temperature -40degC ~ 150degC
Current - Supply (Max) 15mA
Supplier Device Package 5-CB Module

Getting Started

To evaluate this sensor, design a PCB with wide copper traces to handle the target current and use the PFF formed leads for through-hole mounting. Ensure a 0.1uF bypass capacitor is placed close to the VCC pin and consider a simple RC filter on the output to match your ADC sampling rate.

Also Consider

ACS758LCB-100B-PFF-T Allegro MicroSystems - Similar 100A bidirectional capability but designed for 5V supply systems rather than 3.3V rails.
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