FAN8422G Datasheet, PDF (1/10 Pages) Fairchild Semiconductor – Floppy Disk Drive Spindle Motor Driver

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FAN8422G
Floppy Disk Drive Spindle Motor Driver
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 (I_PEAK: 1A)
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.
30-SSOP-375
1
Typical Application
• 3.5-inch floppy disk drive(FDD) spindle motor driver
Ordering Information
Device
Package
Operating Temp.
FAN8422G 30-SSOP-375
0 ~ 75°C
©2003 Fairchild Semiconductor Corporation
Rev. 1.0.1