MLX90297KLD-SAF-108-RE

Overview

The MLX90297KLD-SAF-108-RE is a single-chip fan driver designed for driving single-coil brushless DC (BLDC) motors. It operates within a supply voltage range of 3.3 V to 18 V and supports a PWM input frequency range of 100 Hz to 100 kHz. The device provides an output current limit of 800 mA and features integrated protection mechanisms including overcurrent, thermal shutdown, and rotor lock detection. It utilizes a 10-VFDFN exposed pad package with dimensions of 3x3 mm.

Feature Summary

• Integrates a voltage regulator, Hall sensor with offset elimination, and power H-bridge in a single package
• Features configurable speed curve via a single external resistor
• Includes soft-start and soft-switching capabilities for low-noise operation
• Provides comprehensive protection against overcurrent, thermal stress, and short circuits

Applications

• Single-coil BLDC fan drivers in consumer electronics
• Thermal management systems requiring low BOM cost
• Applications demanding high magnetic sensitivity and reliable startup

Procurement Notes

Verify the specific suffix codes to ensure correct packaging and tape-and-reel quantities. Confirm that the 10-VFDFN package variant matches your PCB footprint requirements. Check for AEC-Q100 qualification status if automotive-grade reliability is required. Ensure compatibility with the 3.3 V to 18 V operating voltage range for your system design.

Selection Notes

Select this component when a highly integrated solution for single-coil fans is needed to minimize board space. It is suitable for designs requiring configurable speed curves without complex digital interfaces. Consider the 800 mA current limit for appropriate motor sizing. The exposed pad package requires careful thermal management planning on the PCB layout.

Part Context

This part belongs to the MLX90297 series of single-chip fan drivers from Melexis. The series offers various package options including SOIC8 and DFN variants. These devices are engineered for consumer applications where cost efficiency and small form factors are critical. The technology combines mixed-signal CMOS processes with advanced magnetic sensing.

Replacement Considerations

MLX90297KZC-ABF-108-SP is a related variant in the same family but uses an SOIC8 straight lead package instead of the DFN10 format. Verify pinout compatibility and thermal performance differences when substituting between package types.