MLX91220KDF-ABF-025-RE

Current Sensors Overview

The MLX91220KDF-ABF-025-RE is a board-mount integrated current sensor from Melexis, utilizing Hall effect technology for bidirectional AC/DC current measurement. It operates on a 5V supply voltage and features an ratiometric voltage output with a sensitivity of 100mV/A. The device detects up to 25A of current and offers a frequency range of DC to 300kHz with a response time of 2µs. Packaged in an 8-SOIC (3.99mm width) housing, it supports AEC-Q100 automotive qualification and functions within a temperature range of -40°C to +125°C.

Current Sensors Feature Summary

• Integrates dual on-chip over-current detection (OCD) outputs to reduce bill-of-materials costs by minimizing reliance on external comparators.
• Employs differential sensing via two internal Hall plates to reject external interference magnetic fields from surrounding power electronics.
• Factory calibrated for plug-and-play operation without requiring end-of-line calibration, ensuring high signal-to-noise ratio across the operating temperature range.

Current Sensors Applications

• Automotive onboard chargers (OBC)
• High-side DC-DC converters
• Battery management systems

Current Sensors Procurement Notes

Verify the specific suffix configuration against the official datasheet to ensure correct package type, sensitivity, and isolation ratings. Confirm that the ratiometric output mode aligns with system reference requirements. Check AEC-Q100 qualification status if automotive deployment is intended. Ensure thermal management meets the maximum junction temperature limits specified in the electrical characteristics table.

Current Sensors Selection Notes

Select this component when a compact, isolated solution is required for currents up to 25A with minimal external circuitry. The ratiometric output is suitable for systems where the supply voltage varies but a proportional response is needed. Consider the 8-SOIC package dimensions for PCB layout constraints. Verify that the 300kHz bandwidth meets the switching frequency requirements of the target application.

Current Sensors Part Context

This part belongs to the MLX91220 series of second-generation isolated integrated current sensors. It complements the MLX91221 series, which utilizes a 3.3V supply instead of 5V. Both series share similar architectural benefits, including integrated OCD and differential sensing, but differ in supply voltage and packaging options to suit diverse design architectures.

Current Sensors Replacement Considerations

MLX91220KDC-ABR-025-RE: Identical functional specifications with alternative packaging or reel configuration. MLX91221KDF-ABF-025-RE: Similar performance but requires 3.3V supply and uses a 16-SOIC package; verify voltage compatibility before substitution.