ACS71240LLCBTR-010B3

Current Sensors Overview

The ACS71240LLCBTR-010B3 is a Hall effect-based, open-loop current sensor manufactured by Allegro MicroSystems. It provides galvanic isolation between high-current conductors and low-voltage control circuitry. The device features an analog voltage output proportional to the sensed current. Key electrical parameters include a supply voltage range of 3V to 3.6V, a maximum supply current of 12mA, and a sensitivity of 132mV/A. It supports bidirectional current measurement with a rated sensing current of 10A. The sensor exhibits a response time of 4µs and operates within a frequency bandwidth of 120kHz. Accuracy is specified at ±6%, with linearity of ±1%. The component is qualified to AEC-Q100 standards for automotive applications and functions across a temperature range of -40°C to 150°C.

Current Sensors Feature Summary

• Provides galvanic isolation for accurate AC/DC current measurement using open-loop Hall effect technology.
• Features integrated copper conduction paths to minimize resistance and power loss in high-current applications.
• Delivers a precise analog voltage output that scales linearly with the detected current magnitude.
• Includes internal signal conditioning circuitry to compensate for temperature variations and offset voltages.

Current Sensors Applications

• Automotive battery management systems and electric vehicle power distribution
• Industrial motor drive current monitoring and control loops
• Switch-mode power supply (SMPS) output current regulation
• Inverter and converter systems for renewable energy sources

Current Sensors Procurement Notes

Verify the specific suffix B3 against the manufacturer's latest datasheet to confirm pinout compatibility and package dimensions. Ensure the procurement channel provides traceable documentation confirming AEC-Q100 qualification status. Check for any recent Product Change Notifications regarding tape and reel specifications or moisture sensitivity level adjustments prior to ordering.

Current Sensors Selection Notes

Select this component when a compact surface-mount solution is required for bidirectional current sensing in automotive environments. The 8-SOIC package offers a balance of thermal performance and board space efficiency. Consider the 10A rating limit relative to peak load requirements and ensure the system operates within the specified 3V to 3.6V supply range for optimal accuracy and linearity performance.

Current Sensors Part Context

This part belongs to the ACS71240 family of current sensors, designed specifically for demanding automotive and industrial applications. The series utilizes advanced Hall effect technology to provide reliable isolation and measurement capabilities. The LL suffix indicates the 8-SOIC package variant, distinguishing it from other form factors within the same functional family while maintaining consistent electrical characteristics and interface protocols.

Current Sensors Replacement Considerations

Direct substitutes within the same package and specification profile include the ACS71240LLCBTR-030B3 for higher current capacity. For lower current requirements, the ACS71240LLCBTR-005B3 may be considered if available. Verify pin-to-pin compatibility and thermal dissipation requirements when transitioning between different current ratings in the same package type.