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Low-Resistance Current Sensor IC with Overcurrent Fault Protection

ACS37220

ACS37220

The ACS37220 simplifies high-current sensing in automotive applications, offering ultra-low resistance (<100µΩ) for improved efficiency and an integrated overcurrent fault output for enhanced system protection. Available in QFN and SOICW-6 packages for design flexibility.

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Top Features

Typical Applications

Packaging

  • AEC-Q100 Grade 0 qualified
  • Small footprint, 4 mm × 4 mm QFN “EZ” package with wettable flank, features overcurrent fault output with user-configurable threshold to provide fast short-circuit detection for enhanced system protection
  • Widebody fused-lead SOIC-6 “MZ” package supports a similar Reinforced Isolation rating to comparable SOICW-16 packages in just half the size

The ACS37220 is offered in two package options.

The small footprint 7-pin “EZ” package is a 4x4mm QFN with wettable flank and features a low internal conductor resistance of 100 μΩ for low power loss and high inrush current withstand capability. This package is designed to measure currents up to 200A and is suitable for applications requiring an isolation voltage below 100V.

The widebody fused-lead SOIC-6 “MZ” package measures currents up to 60A and supports a similar Reinforced Isolation rating to comparable SOICW-16 packages in just half the size. This package supports up to 565VRMS Reinforced Isolation and 1097VRMS Basic Isolation.

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Part Number Specifications and Availability

ACS37220 Product Overview

The ACS37220 is a magnetic current sensor offered in a 4x4mm QFN package designed to replace high-power sense resistors in high-current monitoring applications requiring an isolation voltage below 100V. Compared to shunts, this device provides a smaller footprint, higher efficiency and simpler integration.

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Documentation and Resources