Smart fan motor driver
US79 Melexis
Low cost 2-coil fan driver in 3-pin UA package for 5 V and 12 V cooling applications.This chip contains many features to allow survival in a harsh environment.
Top features
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Built-in reverse voltage protection
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Built-in RFI filter
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Power efficient CMOS and power MOSFET drivers allow 400mA without overheating
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Built-in zener diodes protect outputs
-
5 V and 12 V operation
-
High sensitivity for switching symmetry
-
Locked rotor shutdown
- 3-pin UA package
Product description
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.
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
