This part is a kind of semiconductor called KA2822D.

Function of this product has 3-Phase BLDC Motor Driver.

Manufacturers : Fairchild

Image and pinout :

Some of the text within the PDF file :

www.fairchildsemi.com KA2822D 3-Phase BLDC Motor Driver 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) Description The KA2822D is a monolithic integrated circuit, and suitable for the three-phase spindle motor driver of FDD system. 28-SSOPH-375 Typical Application • 3.5-inch floppy disk drive (FDD) spildle motor • Other 3-phase BLDC motor Ordering Information Device KA2822 [ ... ]

KA2822D PDF Datasheet Download