MLX90287KZC-AAA-000-SP

Overview

The MLX90287KZC-AAA-000-SP is a single-coil brushless fan driver IC from Melexis, designed for energy-efficient cooling applications. It operates within a supply voltage range of 4.5 V to 18 V and supports PWM input frequencies from 100 Hz to 100 kHz. The device integrates a power stage capable of driving continuous currents up to 550 mA. It features intelligent soft-start functionality to suppress peak start-up currents and ensure reliable fan initiation. The component is housed in an SODS-8 package with straight leads and is rated for ambient temperatures between -40°C and 150°C.

Feature Summary

• Integrates Hall effect sensing and power stage for single-coil brushless fan control
• Supports speed regulation via wide-range PWM or analog signals without external circuitry
• Features intelligent soft-start to manage peak current during fan initialization
• Operates reliably in harsh environments across extended temperature ranges

Applications

• Cooling fans in desktop computers and gaming consoles
• Automotive LED headlight cooling systems
• Industrial and aerospace cooling equipment requiring high reliability

Procurement Notes

Verify the obsolete status indicated by the NRND lifecycle code before finalizing designs. Confirm that the SODS-8 package with straight leads matches the target PCB footprint requirements. Ensure compatibility with existing thermal management strategies given the 150°C maximum operating limit. Check for alternative sourcing options due to potential supply constraints associated with end-of-life components.

Selection Notes

Select this component for applications requiring a fully integrated solution for low-noise, speed-controlled single-coil fans. It is suitable where space constraints favor surface-mount technology and where operation over a wide voltage range is necessary. Consider the specific current demands of the load against the 550 mA continuous rating. Evaluate the need for PWM versus analog control based on system architecture.

Part Context

This part belongs to the MLX90287 series of fan driver ICs from Melexis. The series targets the widely used 12-volt cooling fan market segment. It provides a one-chip solution combining magnetic sensing and power driving capabilities. The KZC suffix denotes the specific SODS-8 package variant with straight leads, distinguishing it from other package options in the family.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. As the component is marked as Not Recommended for New Designs (NRND), engineers should consult official Melexis channels for qualified alternatives or updated product recommendations.