Trade Shows

Click here for free admission
26.06. - 28.06.2018, Nuremberg
Hall 5, Booth 5-401



Germany / General
André Huntrieser
✆: +49 (0) 2129 - 376-202
✉: Send email
Field Applications Engineer
Günter Fuchs
✆: +49 (0) 2129 376-200
✉: Send email
Tech Support
Raphael Balke
✆: +49 (0) 2129 376-200
✉: Send email

Austria / Switzerland
Karl Eder
✆: +43 (0) 7448 - 21643-11
✉: Send email





The US79 is the most advanced Smart Fan Control Hall IC. It is designed for 5V and 12V cooling commutation. The chip contains many features to allow survival in a harsh environment. The IC was designed to eliminate all discrete components such as capacitors, resistors, transistors, diodes, PC board and associated labor.
Hall IC circuitry and power FET output provide a low power dissipation cool chip. Locked Rotor conditions are detected by the IC when there is no motion for one second and will shut off the motor drive for five seconds. Then, the IC will turn on the drive current for one second. This sequence continues indefinitely until the locked rotor condition is fixed. This feature prevents overheating.




Features Application examples
  • 2-coil smart fan motor driver
  • On-chip solution with Hall-element and output drivers
  • Power efficient CMOS and power MOSFET drivers
  • Built-in Reverse Voltage Protection
  • High sensitivity for switching symmetry
  • Locked rotor shutdown
  • Built-in RFI Filter
  • Built-in Zener Diodes protect outputs
  • Wide temperature range from -40°C to 150°C (Code L)
  • Supply voltage from 3.5V to 18V
  • Output Current range up to 400mA
  • Flat TO92-3L package (UA package)
  • 5V / 12V 2-Coil brushless DC motor / fan
  • Automotive applications
  • Industrial and Robotics
  • Medical and Health-care,
  • Home & Office Automation
  • Building& Security Automation
  • Consumer solutions
  • White Goods & Household Appliances