12V PWM single coil fan driver

The MLX90287 is a super smart solution for energy-efficient cooling fan designs. The device provides a fully integrated, robust and high performance Hall effect based fan driver IC, with the ability to control cooling fan speed using PWM or analog signals. This device will benefit information technology equipment such as desktop computers, gaming consoles and also cooling fans in automotive applications like LED headlights.

The MLX90287 features a one-chip solution for driving low noise speed-controlled single-coil brushless cooling fans. With an operating supply voltage from 4.5 V to 18 V, the MLX90287 targets the widely used “12 volt” cooling fan applications. With the integrated power stage, cooling fans rated as high as 550 mA (continuous) can be easily driven addressing a majority of applications. The device is even able to operate within an ambient temperature from -40 to 150°C, making it suitable for harsh environments like automotive, industrial and aerospace.

PWM, analog or temperature speed control

The MLX90287 provides a simple solution for controlling cooling fan speed via digital or analog techniques. It directly accepts, without any external circuitry, a wide PWM frequency range from 100 Hz to 100 KHz. This suits perfectly the latest systems using typically 25 KHz or above and older systems still using lower frequency.

The device can even regulate cooling fan speed via a mere potentiometer, a solution used by many extreme gamers for total control, or even a simple thermistor for a more automatic regulation responding on the real system temperature.

No more compromise, go for the best!

Bringing a host of benefits such as minimal speed setting to satisfy minimal cooling requirements, Intelligent soft start reducing high peak start-up current while ensuring reliable start-up and active soft switching for the best noise performance in any conditions, along with ease of use and fully integrated protection, the MLX90287 is a remarkable speed-controlled fan driver IC solution.

Directly PWM compatible with Intel’s PWM fan specification, analog and temperature speed control regulation available in one and the same device, the MLX90287 offers the highest level of flexibility and integration in one-chip for a wide range of cooling fan applications.

Package

The MLX90287 is available in an 8-pin surface mount “SOIC” package. Melexis SOIC package is respectful of the environment and fully green compliant including notably RoHS (Restriction of Hazardous Substances), lead-free (Pb-Free) and halogen-free compliance.