Overview

The LB11922 is a pre-driver IC designed for constantspeed control of 3-phase brushless motors. It can be used to implement a motor drive circuit with the desired output capacity(voltage, current) by using discrete transistors for the output stage. It implements direct PWM drive for minimal power loss.

Features

•Direct PWM drive output

•Speed discriminator + PLL speed control circuit

•Speed lock detection output

•Built-in crystal oscillator circuit

•Forward/reverse switching circuit

•Braking circuit (short braking)

•Full complement of on-chip protection circuits, includinglock protection, current limiter, and thermal shutdown

protection circuits.