Overview
The LB11681H is a three-phase brushless fan motor driver IC. This IC uses a PWM soft switching drive-method (for low-noise drive). Since this IC includes a motor constraint protection circuit necessary for a fan motor system, highly reliable products including this IC can be designed. Also, this IC can be operated with 12V single power supply.
Functions
• Direct PWM drive
• Three-phase full-wave driving method
• Soft switching driving
• Built-in lock (constraint) protection circuit
• Built-in lock (constraint) detection circuit
• FG output (provides one Hall effect sensor equivalent FG outputs)
• Built-in Forward / Reverse switching circuit
• Built-in thermal shut down circuit
• Built-in current limitation circuit
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