LB11850VA-TLM-H Datasheet PDF - ON Semiconductor

●The LB11850VA is a single-phase bipolar fan motor driver with speed control function that works with a speed feedback signal. A highly efficient, quiet and low power consumption motor driver circuit, with a high speed accuracy and large variable speed can be implemented by adding a small number of external components. This pre-driver is optimal for driving large scale fan motors (with large air volume and large current) such as those used in servers and consumer products.

●Features

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● Pre-driver for single-phase full-wave drive

● On-chip speed control circuit

● External PWM input or analog voltage input enabling variable speed control

● On-chip soft start circuit

● Reactive current cut circuit incorporated

● Constraint protection and automatic reset functions incorporated

● FG (speed detection), RD (lock detection) output

● Constant-voltage output pin for hall bias