ACS724LLCTR-20AB-T

Current Sensors Overview

The ACS724LLCTR-20AB-T is a galvanically isolated current sensor IC from Allegro MicroSystems, housed in an 8-pin SOIC package. It features a ±20 A bidirectional current sensing range with a sensitivity of 100 mV/A. The device operates on a supply voltage between 4.5 V and 5.5 V, drawing a maximum supply current of 14 mA. It provides an analog output and supports a frequency range up to 120 kHz with a response time of 4 µs. The unit functions within a temperature range of -40°C to +150°C.

Current Sensors Feature Summary

• Galvanic isolation via integrated copper conduction path
• Bidirectional current sensing capability for AC/DC applications
• High precision linear Hall effect technology
• Surface-mount SOIC-8 packaging for board integration

Current Sensors Applications

• Motor control systems
• Switch-mode power supplies
• Over-current protection circuits
• Load detection in industrial equipment

Current Sensors Procurement Notes

Verify the specific suffix AB-T against official Allegro MicroSystems documentation to confirm bidirectional operation and 100 mV/A sensitivity. Ensure the SOIC-8 package dimensions match design constraints. Confirm RoHS compliance status through authorized distributors. Validate that the 4.5 V to 5.5 V supply range aligns with system power architecture before procurement.

Current Sensors Selection Notes

Select this component for applications requiring bidirectional current measurement up to 20 A with high accuracy. The 100 mV/A sensitivity offers a balance between resolution and dynamic range. Consider the 120 kHz bandwidth for switching power supply monitoring. The wide operating temperature range suits harsh environments. Compare against ACS723 series if lower cost or different sensitivity is required.

Current Sensors Part Context

This part belongs to the ACS724 family of Hall-effect current sensors. It utilizes Allegro's patented Copper Conduction Path technology for electrical isolation. The device integrates signal conditioning circuitry with a precise Hall transducer. It is designed for direct PCB mounting, eliminating the need for external isolation components.

Current Sensors Replacement Considerations

ACS724LLCTR-20AU-T: Unidirectional variant with 200 mV/A sensitivity. ACS724LLCTR-10AB-T: Lower current rating at ±10 A with 200 mV/A sensitivity. ACS723LLCTR-20AB-T: Older generation with lower bandwidth (80 kHz) and higher offset.