NXP Semiconductors TDA5144
The TDA5144 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 is ideally suited as a drive circuit for hard disk drive spindle motor requiring powerful output stages (current limit of 2.0 A).| Part No. | TDA5144 |
|---|---|
| Datasheet | TDA5144 Download |
| Manufacturer |  NXP Semiconductors |
| Description | Brushless DC motor drive circuit |
| Buy | Stock & Price |
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.) – low saturation voltage – built-in current limiter – soft-switching outputs for low Electromagnetic Interference (EMI)
● Thermal protection
● Flyback diodes
● Tacho output without extra sensor
● Transconductance amplifier for an external control transistor. QUICK REFERENCE DATA Measured over full voltage and temperature range. SYMBOL VP VVMOT VDO ILIM Notes 1. An unstabilized supply can be used. 2. VVMOT = VP; +AMP IN = −AMP IN = 0 V; all outputs IO = 0 mA. ORDERING INFORMATION PACKAGE TYPE NUMBER PINS TDA5144AT TDA5144T 20 28 PIN POSITION SOL SOL MATERIAL plastic plastic PARAMETER supply voltage input voltage to the output driver stages drop-out output voltage current limiting note 1 note 2 IO = 100 mA VVMOT = 10 V; RO = 1.2 Ω CONDITIONS 4 1.7 − 1.8 MIN. − − 0.90 2.0 TYP.
APPLICATIONS
TDA5144● General purpose spindle driver (e.g. for hard disk)
● Laser beam printer.
