NXP Semiconductors 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. It is unique in its combination of sensorless motor drive and full-wave drive.| Part No. | TDF5140A |
|---|---|
| Datasheet | TDF5140A 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: – 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
● 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 EXTENDED TYPE NUMBER PINS TDF5140A 18 PIN POSITION DIL MATERIAL 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 = 3.9 Ω CONDITIONS 4 1.7 − 0.7 MIN. − − 0.93 0.8 TYP.
GENERAL DESCRIPTION
APPLICATIONS
● VCR● Laser beam printer
● Fax machine
● Blower
● Automotive.
