TDA5141

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 1.9 A (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.


Application

· VCR
· Laser beam printer
· Fax machine.


Pinout




Specifications

SYMBOL	PARAMETER	CONDITIONS	MIN.	MAX.	UNIT
VP	supply voltage		-	18	V
VI	input voltage; all pins except VMOT	VI < 18 V	-0.3	VP + 0.5	V
VVMOT	VMOT input voltage		-0.5	17	V
VO	output voltage AMP OUT and FG MOT0, MOT1, MOT2 and MOT3		GND -1	VP VVMOT + VDHF	V V
VI	input voltage CAP-ST, CAP-TI, CAP-CD and CAP-DC		-	2.5	V
Tstg	storage temperature		-55	+150
Tamb	operating ambient temperature		0	+70
Ptot	total power dissipation	see Figs 5 to 7	-	-	W
Ves	electrostatic handling	see Chapter "Handling"	-	500	V

Description

The TDA5141 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. TDA5141 is ideally suited for applications requiring powerful output stages (minimum current limit of 1.9 A).