The LB11852RV is a single-phase bipolar driving motor pre-driver with a speed control function based on speed feedback. With a small number of external parts, a highly efficient and very quiet variable-speed drive fan motor with low power consumption and high rotational accuracy can be implemented. The LB11852RV, integrated in a miniature package, is best suited for driving small fan motors requiring speed control.

• Single-phase full-wave driving pre-driver
• Speed control circuit incorporated
• Variable speed control is possible with external PWM input or analog voltage input
• Soft start circuit incorporated
• Minimum speed setting pin
• Current limiting circuit incorporated
• Reactive current cut circuit incorporated
• Automatic resetting type constraint circuit incorporated
• RD (lock detection) output