GENERAL DESCRIPTION
The TDA5341 is a BiCMOS integrated circuit used to drive brushless DC motors in full-wave mode. The device senses the rotor position using an EMF sensing technique and is ideally suited as a drive circuit for a hard disk drive motor.

FEATURES
• Full-wave commutation (using push-pull output stages) without position sensors
• Built-in start-up circuitry
• Three push-pull MOS outputs:
    – 1 A output current
    – Low voltage drop
    – Built-in current limiter
• Thermal protection
• General purpose operational amplifier
• Reset generator
• Motor brake facility
• Actuator driver (H-bridge current-controlled)
• Power-down detector
• Automatic park and brake procedure
• Adjustable park voltage
• Sleep mode
• Speed control with Frequency-Locked Loop (FLL)
• Serial port
• Friction reduction prior to spin-up.

APPLICATIONS
• Hard Disk Drive (HDD).