Overview

The LB1824 produces the direct PWM drive output appropriate for the brushless motors used in office data processing (OA) equipment, and integrates on a single chip the speed control circuits, FG amplifier, and other circuits required to form the drive circuit.

Features

• Breakdown voltage: 30 V, output current: 2.5 A

• Direct PWM drive output

• Crystal oscillator circuit

• Speed discriminator plus PLL speed control system

• Forward/reverse switching circuit

• Start/stop switching circuit

• Current control circuit

• Overheating protection circuit

• Built-in FG amplifier

• Lock detection output