Overview

The LB1913 is a three-phase disk drive motor driver IC that is optimal for use as a 3.5-inch floppy disk drive spindle motor driver.

Functions and Features

• Three-phase full-wave linear drive

• On-chip digital speed control

• Start and stop circuits (active low)

• Speed switching

High: 300 rpm, Low: 360 rpm

• Current limiter circuit

• Index comparator circuit

• Index delay circuit

• Thermal protection circuit