TDA5144 Ver la hoja de datos (PDF) - Philips Electronics

Número de pieza

componentes Descripción

Fabricante

TDA5144

Brushless DC motor drive circuit

Philips Electronics 

Philips Semiconductors

Brushless DC motor drive circuit

Product specification

TDA5144

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.)

– low saturation voltage

– built-in current limiter

– soft-switching outputs for low Electromagnetic

Interference (EMI)

• Thermal protection

• Flyback diodes

• Tacho output without extra sensor

• Transconductance amplifier for an external control

transistor.

APPLICATIONS

• General purpose spindle driver (e.g. for hard disk)

• Laser beam printer.

GENERAL DESCRIPTION

The TDA5144 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.

A special circuit is built-in to reduce the EMI (soft switching

output stages). It is ideally suited as a drive circuit for hard

disk drive spindle motor requiring powerful output stages

(current limit of 2.0 A). It can also be used in e.g. laser

beam printer and other applications.

QUICK REFERENCE DATA

Measured over full voltage and temperature range.

SYMBOL

VP

VVMOT

VDO

ILIM

PARAMETER

supply voltage

input voltage to the output

driver stages

drop-out output voltage

current limiting

CONDITIONS

note 1

note 2

IO = 100 mA

VVMOT = 10 V; RO = 1.2 Ω

Notes

1. An unstabilized supply can be used.

2. VVMOT = VP; +AMP IN = −AMP IN = 0 V; all outputs IO = 0 mA.

MIN.

4

1.7

TYP.

−

−

MAX.

18

16

UNIT

V

V

−

0.90 1.05 V

1.8

2.0

2.4

A

ORDERING INFORMATION

TYPE NUMBER

TDA5144AT

TDA5144T

PINS

20

28

PACKAGE

PIN POSITION

SOL

SOL

MATERIAL

plastic

plastic

CODE

SOT163-1

SOT136-1

June 1994

2

Share Link: