TDA5341

Features:

` Full-wave commutation (using push-pull output stages) without position sensors
` Built-in start-up circuitry
` Three push-pull MOS outputs:
        1 A output current
        Low voltage drop
        Built-in current limiter
` Thermal protection
` General purpose operational amplifier
` Reset generator
` Motor brake facility
` Actuator driver (H-bridge current-controlled)
` Power-down detector
` Automatic park and brake procedure
` Adjustable park voltage
` Sleep mode
` Speed control with Frequency-Locked Loop (FLL)
` Serial port
` Friction reduction prior to spin-up.


Application

· Hard Disk Drive (HDD).


Pinout




Specifications

SYMBOL	PARAMETER	MIN.	MAX.	UNIT
VDD	positive supply voltage	-	5.5	V
Vi	input voltage (all pins)	-0.3	VDD + 0.3	V
V60,8,21	output voltage pins MOT1, MOT2 and MOT3	-0.25	+5.5	V
V45,37,53	output voltage pins VCM-, VCM+ and SENSEOUT	0.7	VDD + 0.7	V
V1,2,18,19	input voltage pins CAPST, CAPTI, CAPCDM and CAPCDS	-	2.5	V
Tstg	IC storage temperature	-55	+150
Tamb	operating ambient temperature	0	+70
Ptot	total power dissipation	see Fig.7

Description

The TDA5341 is a BiCMOS integrated circuit used to drive brushless DC motors in full-wave mode. The device senses the rotor position using an EMF sensing technique and is ideally suited as a drive circuit for a hard disk drive motor.

The TDA5341 also includes a Voice Coil Motor driver (VCM), reset and park facilities and an accurate speed regulator. In addition, a serial port facilitates the control of the device.