MLX90297KZC-ABF-108-SP

Overview

The MLX90297KZC-ABF-108-SP is a single-chip fan driver designed for driving single-coil brushless DC motors. It integrates a voltage regulator, Hall sensor with offset cancellation, and a power H-bridge controlled by a digital state machine. The device operates on a supply voltage range of 3.3 V to 18 V and supports a PWM input frequency from 100 Hz to 100 kHz. It provides an output current limit of 800 mA and is housed in an SODS-8 package. The component meets AEC-Q100 qualification standards.

Feature Summary

• Integrates a single-coil fan driver with high magnetic sensitivity and advanced offset elimination systems within a compact package.
• Enables efficient motor speed control via PWM switching while allowing configurable speed curves through external resistor adjustment.
• Features robust protection mechanisms including 9 kV HBM electrostatic discharge (ESD) protection and electrical over-stress safeguards.

Applications

• Consumer electronics cooling systems
• Single-coil BLDC motor drives
• Automotive-grade fan applications

Procurement Notes

Verify the specific suffix ABF against the official datasheet to confirm pinout and lead configuration, as variations exist within the MLX90297 family. Confirm the NRND status indicates end-of-life planning and assess long-term availability risks before finalizing design-in decisions. Ensure the SODS-8 package dimensions match the target PCB footprint requirements.

Selection Notes

Select this component when a low BOM cost and small form factor are required for single-coil fan applications. It is suitable for designs needing integrated regulation and sensing without external components. Consider the 800 mA current limit and 18 V maximum rating to ensure compatibility with the target motor specifications and supply rails.

Part Context

This part belongs to the MLX90297 series of single-chip fan drivers manufactured by Melexis. These devices utilize mixed-signal CMOS technology to provide a complete solution for driving single-coil BLDC motors. The series is characterized by its ability to reduce board size and simplify design through high integration of analog and digital functions.

Replacement Considerations

Check for direct substitutes within the MLX90297 family that may have different suffixes or updated lifecycle statuses. Verify functional equivalence regarding voltage range, current limits, and package type before considering alternative vendors.