LB1981 Description
ENN5917 LB1981V Monolithic Digital IC LB1981V Three-Phase Brushless Motor Driver Overview The LB1981V is a three-phase brushless motor driver especially suited for use mainly with drum motors of portable VCRs.
LB1981 Key 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