Description

The KA2822CD is a monolithic integrated circuit suitable for a three-phase spindle motor driver of floppy disk drive systems. It can make index signals without an index hall sensor by special rotor magnetization.

Features

• 3-phase, full-wave, linear BLDC motor driver with 2 hall sensors

• Built-in soft switching drive circuit

• 300 or 360 RPM speed control

• Snubberless

• Built-in chip enable function

• Built-in digital speed control circuit

• Built-in current limit circuit

• Index sensorless

• Built-in TSD (Thermal shutdown)

• Low saturation voltage

• Digital input: TTL, 5V CMOS compatible

• Built-in current-mode control circuit (IPEAK: 1A)

Typical Application

• 3.5-inch floppy disk drive(FDD) spindle motor driver