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MLX90287
12V PWM Fan Driver
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MLX90287 General Description
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 4.5V to 16 volts, the MLX90287 targets the widely used “12 volt” cooling fan applications. With the integrated power stage, cooling fans rated as high as 550mA (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 degree Celsius, making it suitable for harsh environments like automotive, industrial, military 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 100Hz to 100KHz. This suits perfectly the latest systems using typically 25KHz 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.
MLX90287 Features and Benefits
- Wide Operating Voltage range: from 4.5V to 16V
- Direct PWM Input: ease of use with wide frequency range from 100Hz to 100KHz
- Intelligent Soft Start: suppresses start peak current while ensuring reliable fan start-up
- Minimal Speed Setting: satisfy minimal cooling requirements
- Built-in PWM Input Resistor: reduces BOM + wire-break protection
- Active Soft Switching: Optimum low noise performance at any rotation speed
- Integrated Protection: Reverse Voltage, Locked Rotor, Brown-Out, Thermal Shutdown, FG output short circuit
- High ESD Protection: 6000 Volts Human Body Model
- Green Compliant: Lead-Free and Halogen-Free package
MLX90287 Environmental Information
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