Overview
The LB1981V is a three-phase brushless motor driver especially suited for use mainly with drum motors of portable VCRs.

FEATUREs
• Three-phase full-wave drive brushless sensorless motor drive
• Soft switching drive
• Power-saving speed control function due to motor voltage
• Use with 3V power supply possible
• Output residual voltage can be set in 4 ways
• Forward/reverse switching possible
• Built-in standby function (FG and PG amplifier only remain operative)
• Built-in braking circuit
• Built-in thermal shutdown circuit
• Built-in FG and PG amplifiers
• Built-in saturation prevention amplifier and midpoint control circuit