TDA5145TS Datasheet PDF - Philips Electronics

GENERAL DESCRIPTION
The TDA5145TS is a bipolar integrated circuit used to drive 3-phase brushless DC motors in full-wave mode.
The device is sensorless (saving of 3 hall-sensors) using the back EMF sensing technique to sense the rotor
position. It includes bidirectional control, brake function and has a special circuit built-in to reduce the EMI
(soft-switching output stages).

FEATURES
• Full-wave commutation (using push-pull drivers at the output stages) without position sensors
• Built-in start-up circuitry
• Three push-pull outputs:
  – Output current 2.0 A (typ.)
  – Built-in current limiter
  – Soft-switching outputs for low Electromagnetic Interference (EMI).
• Thermal protection
• Flyback diodes
• Motor brake facility
• Direction control input
• Reset function.

APPLICATIONS
• General purpose spindle driver e.g.:
  – Hard disk drive
  – Tape drive
  – Optical disk drive.