Description

The FAN8422G 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

• Three-phase, full-wave, linear BLDC motor driver

• Commutation with only two hall sensors

• Generating index signal without an index hall sensor by special rotor magnetization

• Built-in soft switching drive circuit

• 300/360rpm selectable speed control circuit

• Snubberless output drive

• Chip enable function

• Built-in current limit circuit

• Built-in thermal shutdown circuit

• Low output saturation voltage

• TTL, 5V CMOS compatible digital inputs

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

Typical Application

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