The LV8112VB is a 3-phase brushless motor driver for polygon mirror motor driving of LBP. A circuit needed to drive of polygon mirror motor can be composed of a single-chip. Also, the output transistor is made DMOS by using BiDC process, and by adopting the synchronous rectification method, the lower power consumption (Heat generation) is achieved.

• Direct PWM drive + synchronous rectification
• PLL speed control circuit
• Current limiter, constraint protection, thermal shutdown, under-voltage protection circuit
• 3-phase bipolar drive
• IO max1 = 2.5A
• IO max2 = 3.0A (t is within 0.1ms)
• Output current control circuit
• Phase lock detection output
• (with mask function)
• Circuit to switch slowing down method while stopped
• (Free run or Short-circuit brake)
• Constraint protection detection signal switching circuit (FG or LD)
• Forward / Reverse switching circuit
• Compatible with Hall FG
• Hall bias pin (Bias current cut in a stopped state)
• 5V regulator output
• SDCC function (Speed Detection Current Control)