MLX91221KDF-ABF-020-SP

Current Sensors Overview

The MLX91221KDF-ABF-020-SP is a second-generation isolated integrated current sensor manufactured by Melexis Technologies NV. It utilizes Hall effect technology to provide bidirectional current sensing with a detection range of 20A and a sensitivity of 62.5mV/A. The device features a fixed voltage output, operates on a supply voltage of 3.135V to 3.465V, and supports frequencies from DC to 300kHz. It offers a linearity of ±0.6% and a response time of 2µs. Packaged in a 16-SOIC surface-mount case, it functions within a temperature range of -40°C to 125°C.

Current Sensors Feature Summary

• Generates an analog voltage output proportional to the sensed current using Hall effect principles.
• Provides galvanic isolation between the high-voltage current path and the low-voltage control circuitry.
• Delivers bidirectional sensing capability for both AC and DC current measurements.

Current Sensors Applications

• Motor drive current monitoring
• Power supply overcurrent protection
• Battery management system sensing

Current Sensors Procurement Notes

Verify that the specific suffix ABF corresponds to the required isolation voltage and OCD adjustment parameters for your design. Confirm the 16-SOIC package dimensions match your PCB footprint constraints. Ensure the supply voltage range aligns with your system's power rail specifications before finalizing the order.

Current Sensors Selection Notes

Select this component when a compact, board-mounted solution with high bandwidth up to 300kHz is required. The fixed voltage output simplifies interface design compared to current-output sensors. Consider the thermal performance within the -40°C to 125°C range if operating in extreme environments.

Current Sensors Part Context

This part belongs to the MLX91221 series of second-generation isolated integrated current sensors. It is designed to replace older discrete solutions by integrating the Hall element, signal processing, and isolation into a single small-footprint package, reducing assembly complexity and improving reliability in power electronics applications.

Current Sensors Replacement Considerations

Consult official Melexis documentation for direct cross-references. Variants such as MLX91221KDF-ABF-025-TU offer different current ratings and packaging. Verify pinout compatibility and electrical parameter alignment before substituting.