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The US79KUA is a smart fan control Hall IC. It is designed for 5 V and 12 V cooling applications. The chip contains many features to allow survival in a harsh environment.

The K rating guarantees proper operation up to an ambient temperature of 125°C. Hall IC circuitry and power field effect transistor (FET) output provide a low power dissipation cool chip.

Locked rotor detection protects the IC in case no fan rotation is detected.

Thanks to the No-VDD concept this 2-coil fan driver fits into a 3-pin UA package.

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Top features

  • Built-in reverse voltage protection

  • Built-in RFI filter

  • Power efficient CMOS and power MOSFET drivers allow 400mA without overheating

  • Built-in zener diodes protect outputs

  • 5 V and 12 V operation

  • High sensitivity for switching symmetry

  • Locked rotor shutdown

  • 3-pin UA package
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Smart fan motor driver - US79

Features and benefits

  • Built-in reverse voltage protection

  • Built-in RFI filter

  • Power efficient CMOS and power MOSFET drivers allow 400mA without overheating

  • Built-in zener diodes protect outputs

  • 5 V and 12 V operation

  • High sensitivity for switching symmetry

  • Locked rotor shutdown

  • 3-pin UA package

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