Melexis Semiconductors Driver & Controller Fan Motor
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Features
7V
SOT23 package
Rotation Detection output
Soft switching
Full bridge single coil driver
High sensitivity Hall sensor
Low power consumption
Reverse voltage protection
Locked rotor / Thermal protection with auto-restart
The US169 is a single chip solution for driving single coil brushless DC motors. The open-drain rotation detection output is active-low when the motor is spinning and goes high when blocked.
When the magnetic flux does not switch its direction for a period longer than 0.4s the built-in Locked Rotor Protection ( LRP ) shuts off the coil current for about 2.4s ( typical values ).
The used bridge drivers provide soft switching of bidirectional current through the single phase motor winding.
Relevant Support for the US169
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Relevant News for the US169
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