SINGLE COIL EXHAUST FAN

Description

The MLX90412-K operates over a supply voltage range from 3.5 V to 32 V, and is robust up to 40 V, With a current limit up to 2.2A, the MLX90412 can drive applications up to 35 W in a safe way without risk of overheating the device or the motor coil. The closed-loop speed control and adaptive low noise commutation enable industry-standard efficiency with lowest acoustic noise.

Features  

• All-in-one fan driver, including high-sensitivity Hall-effect sensor 
• Up to 2.2 A motor current 
• Adaptive commutuation for best in class efficiency over the full speed range for any fan design 
• Commutation options

» Maximum torque 

» Very low acoustic noise 

• PWM control input

» Standby mode 

» Open loop / closed loop speed control (+/-1.5%) 

• Protections and diagnostics 

» Locked Rotor Protection (LRP) (Programmable 

» Temperature Shutdown (TSD) 

» Over Voltage protection (OVP) (Programmable)

» Short circuit protection (OCP) 

» Current limit (CL) 

» FG/RD open drain diagnostics output (Programmable) 

• Certifications

» UL/VDE/CE ready 

» JEDEC qualified package 

I2C programming 

» Fast prototyping 

» End-of-line programming 

• Package Exposed pad DFN10 3x3 with wetable flanks 

» small (9mm2) footprint, for minimal PCB size 

» <1mm height  

Block Diagram