TDA5145TS datasheet(2/20 Pages) PHILIPS

2 / 20 page

1998 Oct 27

Philips Semiconductors

Product speciﬁcation

Brushless DC motor drive circuit

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.

APPLICATIONS

• General purpose spindle driver e.g.:

– Hard disk drive

– Tape drive

– Optical disk drive.

GENERAL DESCRIPTION

The TDA5145TS 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. It includes bidirectional control, brake function

and has a special circuit built-in to reduce the EMI

(soft-switching output stages).

QUICK REFERENCE DATA

Measured over full voltage and temperature range.

Notes

1. An unstabilized supply can be used.

2. VVMOT =VP; all outputs Io = 0 mA.

ORDERING INFORMATION

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

supply voltage

note 1

−

Vi(VMOT)

input voltage to the output driver

stages

note 2

1.7

−

VDO

drop-out output voltage

Io = 100 mA

−

0.90

1.05

ILIM

current limiting

VVMOT =10V; Ro = 1.2 Ω

1.8

2.0

2.5

TYPE

NUMBER

PACKAGE

NAME

DESCRIPTION

VERSION

TDA5145TS

SSOP24

plastic shrink small outline package; 24 leads;

body width 5.3 mm

SOT340-1

TDA5145TS 데이터시트(PDF) 2 Page - NXP Semiconductors

TDA5145TS 데이터시트(HTML) 2 Page - NXP Semiconductors

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

데이터시트 다운로드

링크 URL