TDA5145TS

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
` Motor brake facility
` Direction control input
` Reset function.


Application

` General purpose spindle driver e.g.:
      Hard disk drive
      Tape drive
      Optical disk drive.


Pinout




Specifications

SYMBOL	PARAMETER	CONDITIONS	MIN.	MAX.	UNIT
VP	supply voltage		-	18	V
VI(n)	input voltage; all pins except VMOT	VI < 18 V	-0.3	VP + 0.5	V
VI(VMOT)	VMOT input voltage		-0.5	+17	V
VO	output voltage MOT0, MOT1, MOT2 and MOT3		-1	VVMOT + VdFD	V
VI(n1)	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 Fig. 3	-	-	W
Ves	electrostatic handling	see Chapter "Handling"	-	2000	V

Description

The TDA5145TS is a bipolar integrated circuit used to drive 3-phase brushless DC motors in full-wave mode.

The TDA5145TS is sensorless (saving of 3 hall-sensors) using the back EMF sensing technique to sense the rotor position. TDA5145TS includes bidirectional control, brake function and has a special circuit built-in to reduce the EMI soft-switching output stages).