©2003 Fairchild Semiconductor Corporation

www.fairchildsemi.com

Rev. 1.0.0

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

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 sen-

sor by special rotor magnetization.

28-SSOPH-375

1

Typical Application

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

Ordering Information

Device

Package

Operating Temp.

KA2822CD

28-SSOPH-375

0 ~ 75

°C

KA2822CDTF 28-SSOPH-375

0 ~ 75

°C

KA2822CD

3-Phase BLDC Motor Driver