TDA5146T - NXP

TDA5146T Brushless DC motor drive circuit

The TDA5146T is a bipolar 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 or tape drive. QUICK REFERENCE DATA Measured over full voltage and temperature ranges Symbol VP Vsup VVMOT VDo ILIM Paramet.

Features

• Full
  –wave commutation (using push/pull drivers at the output stages) without position sensors
• Built
  –in start
  –up circuit
• Three push
  –pull outputs:
  – 2 A output current (Typical)
  – Built
  –in current limiter
• Thermal protection
• Soft switching outputs
• Flyback diodes
• Tacho output sensor
• Brake function
• Direction control input
• Reset function
• FET driver stage to be used in a buck converter APPLICATIONS General purpose spindle driver (e.g., HDD, tape driver) GENERAL DESCRIPTION The TDA5146T is a bipolar integrated circuit used to drive brushless DC motors in full
  –wave mode. The de.