SINGLE COIL EXHAUST FAN

Description

The single‑coil exhaust fan solution is based on the MLX90412‑K, which operates over a wide supply voltage range of 3.5 V to 32 V, with robustness up to 40 V. With a current limit of up to 2.2 A, the MLX90412 can safely drive applications up to 35 W without the risk of overheating the device or motor coil.

Its closed‑loop speed control and adaptive low‑noise commutation deliver industry‑standard efficiency while minimizing acoustic noise.

Features  

• All-in-one fan driver, including a high-sensitivity Hall-effect sensor 
• Up to 2.2 A motor current 
• Adaptive commutation 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