ACS723LLCTR-20AU-T

Current Sensors Overview

The ACS723LLCTR-20AU-T is a high-accuracy, galvanically isolated current sensor IC from Allegro MicroSystems. It utilizes linear Hall effect technology with an open-loop architecture to measure DC and AC currents up to 20A. The device features a unidirectional output with a sensitivity of 200mV/A and operates on a 5V supply. Key electrical parameters include ±3% accuracy, ±1% linearity, and a bandwidth of DC to 80kHz. It is housed in an 8-SOIC package (3.90mm width) and supports a supply voltage range of 4.5V to 5.5V.

Current Sensors Feature Summary

• Provides galvanic isolation between the current-carrying conductor and the electronic circuit.
• Delivers precise measurement of both AC and DC currents using linear Hall effect sensing.
• Features a low-power open-loop design suitable for board-mount applications.

Current Sensors Applications

• Industrial motor control systems
• Switch-mode power supplies
• Overcurrent protection circuits

Current Sensors Procurement Notes

Verify the specific suffix 'AU' confirms unidirectional operation and 200mV/A sensitivity, distinguishing it from bidirectional variants like 'AB'. Confirm the 'LLC' designation indicates the lead-free and halogen-free compliant version. Ensure the SOIC-8 package dimensions match the PCB footprint requirements. Check RoHS3 compliance status for regulatory adherence.

Current Sensors Selection Notes

Select this component when unidirectional current monitoring is required within a 20A limit. The 200mV/A sensitivity offers higher signal resolution compared to lower-sensitivity models. Consider the 80kHz bandwidth for high-frequency switching applications. The 5V supply requirement aligns with standard digital logic interfaces.

Current Sensors Part Context

This part belongs to the ACS723 series of current sensor ICs. It shares the same physical package and core Hall effect technology as other variants in the family but differs in polarity configuration and sensitivity. The 'AU' suffix specifically denotes the unidirectional variant, while 'AB' would indicate bidirectional capability.

Current Sensors Replacement Considerations

Direct substitutes include other Allegro ACS723 variants such as ACS723LLCTR-05AU-T or ACS723LLCTR-10AU-T for different current ranges. Cross-manufacturer replacements require verifying equivalent isolation voltage, sensitivity, and package dimensions.