TDA5341 datasheet(2/28 Pages) PHILIPS

2 / 28 page

1997 Jul 10

Philips Semiconductors

Product speciﬁcation

Brushless DC motor and VCM drive circuit

with speed control

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.

APPLICATIONS

• Hard Disk Drive (HDD).

GENERAL 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.

QUICK REFERENCE DATA

Measured over full voltage and temperature range.

ORDERING INFORMATION

SYMBOL

PARAMETER

MIN.

TYP.

MAX.

UNIT

VDD

general supply voltage for logic and power

4.5

5.0

5.25

IoMOT

motor output current

1.3

1.6

1.9

RDS(MOT)

motor output resistance

−

1.1

1.56

Ω

IoACT

actuator output current

0.7

1.1

1.4

RDS(ACT)

actuator output resistance

−

2.0

2.5

Ω

TYPE

NUMBER

PACKAGE

NAME

DESCRIPTION

VERSION

TDA5341G

LQFP64

plastic low proﬁle quad ﬂat package; 64 leads; body 10

× 10 × 1.4 mm

SOT314-2

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