NXP Semiconductors TDA5145
The TDA5145 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).| Part No. | TDA5145 |
|---|---|
| Datasheet | TDA5145 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.) – built-in current limiter – soft-switching outputs for low Electromagnetic Interference (EMI)
● Thermal protection
● Flyback diodes
● Tacho output without extra sensor
● Motor brake facility
● Direction control input
● Reset function
● 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 TDA5145 TDA5145T 28 28 PIN POSITION DIL 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.
