ACS37220LEZATR-200B5

Current Sensors Overview

The ACS37220LEZATR-200B5 is a board-mount current sensor from Allegro MicroSystems, designed for high power density applications. It features a 200 A current rating and operates with a 5 V supply voltage within the 4.5 V to 5.5 V range. The device utilizes Hall effect technology for bidirectional current sensing in a single channel configuration. It provides an analog voltage output with a sensitivity of 10 mV/A. Key electrical parameters include a response time of 4 µs and a frequency range extending from DC to 150 kHz. The component is housed in a 7-pin QFN package with an exposed pad, suitable for automotive environments under AEC-Q100 standards.

Current Sensors Feature Summary

• Hall effect-based bidirectional current sensing capability
• High power density design in a compact QFN package
• Analog voltage output proportional to sensed current
• Automotive-grade reliability compliant with AEC-Q100

Current Sensors Applications

• Electric vehicle motor control systems
• Battery management system monitoring
• Industrial motor drive protection
• Power supply overcurrent detection

Current Sensors Procurement Notes

Verify the specific suffix B5 against the manufacturer's datasheet to confirm voltage and sensitivity specifications. Ensure the ordering part number matches the required 200 A rating and 5 V supply requirement. Confirm that the QFN-7 package dimensions align with the target PCB footprint. Check for any specific handling requirements related to the exposed thermal pad during assembly.

Current Sensors Selection Notes

Select this component when a high-current capacity of 200 A is required in a small form factor. The 5 V supply operation suits standard logic interfaces without additional level shifting. Consider the 150 kHz bandwidth for switching applications. The AEC-Q100 qualification makes it suitable for automotive use cases where environmental robustness is critical compared to industrial-only alternatives.

Current Sensors Part Context

This part belongs to the ACS37220 series, which focuses on low-resistance current sensing solutions. The series offers various current ratings and supply voltages. The LEZATR-200B5 variant specifically targets the 200 A range with 5 V operation. It shares the same physical package and core Hall technology as other variants in the family but differs in electrical characteristics and sensitivity settings.

Current Sensors Replacement Considerations

Direct substitutes may include other Allegro ACS37220 variants with different current ratings or supply voltages, such as the ACS37220LEZATR-100B3 for lower current needs. Cross-manufacturer replacements require matching the 7-pin QFN package, 200 A rating, and 5 V supply constraints. Verify sensitivity and response time compatibility before substitution.