MLX90297LLD-SAF-108-SP

Overview

The MLX90297LLD-SAF-108-SP is a single-chip fan driver designed for driving single-coil DC brushless motors (BLDC). It operates within a supply voltage range of 3.3 V to 18 V and supports a maximum output current limit of 800 mA. The device utilizes a PWM input signal for efficient speed control via the output half-bridge driver. It functions at frequencies between 100 Hz and 100 kHz and is housed in an SOIC-8 package. The component meets AEC-Q100 qualification standards.

Feature Summary

• Integrates a voltage regulator, Hall sensor with advanced offset elimination, and power H-bridge on a single chip.
• Enables configurable speed curves through external resistor adjustment.
• Provides high magnetic sensitivity and robust operation under harsh conditions.
• Includes 9 kV HBM electrostatic discharge protection.

Applications

• Consumer electronics cooling fans
• Single-coil BLDC motor control
• Low noise fan applications

Procurement Notes

Verify the specific suffix 'SAF' against official Melexis documentation to confirm pinout and functional variations compared to other variants like 'VAF'. Confirm end-of-life status as the MLX90297 series is marked NRND. Ensure compatibility with existing PCB footprints and design-in requirements before procurement.

Selection Notes

Select this component for applications requiring a compact, low BOM cost solution for single-coil fans. It is suitable where space constraints necessitate a single-layer PCB design. Choose based on the required voltage range and current limits. Verify that the configurable speed curve feature meets the specific acoustic or performance needs of the target application.

Part Context

This part belongs to the MLX90297 series from Melexis, which are mixed-signal CMOS chips for single-coil fan drivers. The series is designed to reduce system size and cost by integrating control logic and power stages. It targets both automotive and consumer markets, offering reliability through AEC-Q100 qualification and integrated diagnostic features.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided data. As the MLX90297 series is Not Recommended for New Designs (NRND), consult Melexis directly for current alternative recommendations or lifecycle management options.