Overview

The LB1825 is a three-phase brushless motor driver IC optimal for LBP polygon mirror and magneto-optical disk spindle motor drive.

Functions and Features

• Three-phase full-wave current control drive

• PLL speed control

• Internal 24-mode clock divisor switching

• Phase lock detector output

• FG/Hall FG selection

• Current limiter circuit

• 7 V stabilized power supply output pin

• Reverse torque braking

• Crystal oscillator circuit

• Internal/external reference frequency selection

• Built-in FG amplifier and FG pulse output

• Forward/reverse rotation switching

• Low power supply voltage protection circuit

• Thermal protection circuit