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The MLX90285 is a really cool driving solution for silent brushless cooling fans. It provides a robust, high performance and fully integrated Hall-effect based fan driver IC, including technology lowering both acoustic and electrical noise. This device is ready to serve demanding cooling requirements in office equipment or consumer electronics such as laser printers, projectors or flat-screen televisions.

Highly integrated (all-in-one) fan driver

Our MLX90285 includes the Hall sensor and power electronics on a single piece of silicon, thus greatly reducing external component counts and printed circuit board complexity.

Cool and silent

This fan driver device suits numerous cooling applications as it operates from 5 to 24 V. The low voltage operation down to 5 V even allows for use in speed control applications where supply voltage is reduced to lower the cooling fan rotation speed.

The device is also able to operate within an ambient temperature from -40 to 150°C. Therefore, the high operating temperature makes the device attractive also for industrial or automotive applications.

NO VDD fan driver

The MLX90285 is a no-VDD fan driver.  Thanks to the patented no-VDD concept, integrated FG- and RD- options are available in a 4-pin through-hole VK package and 8-pin surface mount Small Outline Integrated Circuit (SOIC) package.

Respectful of the environment, both VK and SOIC packages are fully “Green” compliant including notably RoHS (Restriction of Hazardous Substances), lead-free (Pb-Free) and halogen-free compliance.

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Top features

  • Two-coil fan driver

  • Wide operating voltage range: from 5 to 24 V

  • One-chip solution: Hall element + output drivers

  • Soft switching for low noise, both acoustic and electrical

  • Active slope control without external components -- automatically adapts slope to rotation speed

  • Two-stage thermal protection

  • Locked rotor protection and auto-restart

  • Output options: tachometer open drain output (MLX90285-FG) and alarm open drain output (MLX90285-RD)

  • “Green” compliant package options: available in 4-pin through-hole VK (“No-VDD” design) or surface mount SOIC8

  • Pin-to-pin compatible with US90A and US91A
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Two coil fan driver - High voltage and low noise - MLX90285

Features and benefits

  • Two-coil fan driver

  • Wide operating voltage range: from 5 to 24 V

  • One-chip solution: Hall element + output drivers

  • Soft switching for low noise, both acoustic and electrical

  • Active slope control without external components -- automatically adapts slope to rotation speed

  • Two-stage thermal protection

  • Locked rotor protection and auto-restart

  • Output options: tachometer open drain output (MLX90285-FG) and alarm open drain output (MLX90285-RD)

  • “Green” compliant package options: available in 4-pin through-hole VK (“No-VDD” design) or surface mount SOIC8

  • Pin-to-pin compatible with US90A and US91A

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