LB11868V is a single-phase bipolar driving motor pre-driver with the variable speed function compatible with external PWM signal. With a few external parts, a highly-efficient and highly-silent variable drive fan motor with low power consumption can be achieved. This product is best suited for driving of the server requiring large air flow and large current and the fan motor of consumer appliances.

• Variable speed control possible with external PWM input
• Current limiting circuit incorporated
• Soft start setting pin
• Pch-FET kickback absorption setting pin
• Lock protection and automatic reset circuits incorporated
• Thermal shutdown circuit incorporated
• Single-phase full-wave driving pre-driver
• Reactive current cut circuit incorporated
• Minimum speed setting pin
• Start setting pin of on time
• FG (rotational speed detection) output, RD (lock detection) output