TDF5140A Overview
APPLICATIONS VCR Laser beam printer Fax machine Blower Automotive. TDF5140A The TDF5140A 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.
TDF5140A Key Features
- Full-wave mutation (using push/pull drivers at the output stages) without position sensors
- Built-in start-up circuitry
- Three push-pull outputs
- 0.8 A output current (typ.)
- low saturation voltage
- built-in current limiter
- Thermal protection
- Flyback diodes
- Tacho output without extra sensor
- Position pulse stage for phase-locked-loop control