Overview

The LB1687M is a 3-phase brushless motor driver IC ideally suited for use in VCR capstan motor, drum motor drive applications.

Features and Functions

• 120° voltage linear type.

• Soft switching type eliminating noises caused by current switching and making the value of external capacitors smaller (comparable to those of chip capacitors).

• On-chip FG amplifier.

• On-chip thermal shutdown circuit.

• FG signal can be used to detect the rotational speed of a motor so that the hall amplifier gain is changed in two steps, thus reducing torque ripple and noise.

• Motor drivable at voltage down to motor supply voltage 5V.