Overview

The LB1890M is a 3-phase DD motor driver IC and is an ideal FDD spindle motor driver for 3.5 inch applications.

Functions and Features

• Three phase total wave linear driver

• Eliminates need for output electrolytic capacitor (however, depending on the motor, this may not apply)

• On-chip digital speed control

• Start/stop circuit

• Current limiter circuit

• On-chip index comparator (single HYS)

• On-chip index delay circuit

• AGC circuit

• Temperature protection circuit