ACS71240LLCBTR-050U5

Current Sensors Overview

The Allegro MicroSystems ACS71240LLCBTR-050U5 is a board-mount current sensor utilizing Hall effect technology with an open-loop architecture. It features a single channel designed for unidirectional AC/DC current measurement up to 50A. The device operates within a supply voltage range of 4.5V to 5.5V and draws a maximum supply current of 12mA. Key electrical parameters include a sensitivity of 80mV/A, a bandwidth frequency of 120kHz, and a response time of 4µs. Accuracy is rated at ±6% with a linearity of ±1%. It is housed in an 8-SOIC package (3.90mm width) and supports an operating temperature range from -40°C to 150°C.

Current Sensors Feature Summary

• Integrates Hall effect sensing for galvanic isolation and common mode rejection capabilities.
• Provides a linear analog voltage output proportional to the sensed current magnitude.
• Certified to AEC-Q100 standards for automotive reliability applications.
• Supports bidirectional thermal management with extended high-temperature operation.

Current Sensors Applications

• Automotive battery management systems
• Motor control drive circuits
• Industrial power supply monitoring

Current Sensors Procurement Notes

Verify that the specific suffix U5 corresponds to the unidirectional 50A variant with the 4.5V-5.5V supply requirement. Confirm the 8-SOIC package dimensions match the PCB footprint design. Ensure the application environment remains within the specified -40°C to 150°C operating range to maintain accuracy specifications.

Current Sensors Selection Notes

Select this component when unidirectional current sensing up to 50A is required in space-constrained designs. The 8-SOIC package offers a compact solution compared to through-hole alternatives. Consider the 80mV/A sensitivity for signal conditioning requirements. Verify compatibility with the 4.5V to 5.5V logic supply levels used in the target system.

Current Sensors Part Context

This part belongs to the ACS71240 series of Hall effect current sensors manufactured by Allegro MicroSystems. The series is characterized by low offset voltage and high precision. The ACS71240LLCBTR-050U5 specifically denotes the lead-free, tape-and-reel packaged version optimized for automated surface-mount assembly processes in high-volume production environments.

Current Sensors Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Cross-reference with other Allegro ACS712xx variants only if current rating and polarity requirements align.