Overview

The LB11693 reduces motor noise by imparting a slope to the output current when switching the phase to which power is applied. This motor driver includes an automatic recovery constraint protection circuit and is optimal for driving 24 V fan motors.

Functions and Features

• Soft phase switching + direct PWM drive

• PWM control based on both a DC voltage input (the CTL voltage) and a pulse input

• Provides a 5 V regulator output

• One Hall-effect sensor FG output

• Integrating amplifier

• Automatic recovery constraint protection circuit (on/off = 1/14), RD output

• Current limiter circuit

• LVSD circuit

• Thermal protection circuitt