ACS72981KLRATR-150U5

Current Sensors Overview

The ACS72981KLRATR-150U5 is a high-precision linear Hall-effect-based current sensor IC manufactured by Allegro MicroSystems. It features an integrated 200 µΩ copper conduction path designed for board-mount applications. The device provides unidirectional current sensing with a rated current of 150 A. It operates within a supply voltage range of 4.5 V to 5.5 V and delivers an analog output signal. Key electrical specifications include a response time of 1.8 µs, an accuracy of 3.25%, and a frequency range up to 250 kHz. The component supports an operating temperature range from -40°C to +150°C and is housed in a PSO-7 package.

Current Sensors Feature Summary

• Integrates a low-resistance 200 µΩ copper conduction path for minimal power loss
• Utilizes linear Hall-effect technology for precise current measurement
• Provides galvanic isolation between the current conductor and electronic circuitry

Current Sensors Applications

• Industrial motor drive systems
• Power supply unit monitoring
• Inverter and converter current control

Current Sensors Procurement Notes

Verify that the specific suffix U5 corresponds to the required unidirectional configuration and sensitivity level for your design. Confirm the PSO-7 package dimensions match your PCB footprint constraints. Ensure the selected variant meets the thermal management requirements for the intended maximum operating temperature of 150°C. Cross-reference the manufacturer datasheet revision to confirm pinout compatibility before finalizing procurement.

Current Sensors Selection Notes

Select this component when unidirectional current measurement up to 150 A is required with high precision. The 200 µΩ internal resistance influences power dissipation calculations; ensure thermal design accommodates I²R losses at peak loads. The analog output interface requires appropriate signal conditioning or ADC integration. Consider the 1.8 µs response time for dynamic load applications requiring fast feedback loops.

Current Sensors Part Context

This part belongs to the ACS72981 family of high-precision linear Hall-effect current sensors. Variants within this series differ primarily in current ratings (e.g., 100 A, 150 A, 200 A) and directional capabilities (unidirectional vs. bidirectional). The KLRATR-150U5 specifically denotes the 150 A unidirectional version in tape-and-reel packaging, sharing the same core sensor architecture and package type as other family members.

Current Sensors Replacement Considerations

Direct substitutes within the same family include the ACS72981ELRATR-150U5 if bidirectional functionality is acceptable, or the ACS72981KLRATR-100B5 for lower current requirements. Verify that any replacement maintains the 200 µΩ conductor resistance and PSO-7 package compatibility to ensure mechanical and electrical interchangeability.