W43023 [ETC]

4-Channel BTL Motor Driver for CD-ROM; 4通道BTL电机驱动器的CD -ROM


型号：	W43023
厂家：	ETC
描述：	4-Channel BTL Motor Driver for CD-ROM 4通道BTL电机驱动器的CD -ROM 驱动器电机 CD
文件：	总9页 (文件大小：519K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

W43023

WAFER WIN

4-Channel BTL Motor Driver for CD-ROM

Features

Description

The W43023 is a 4-channel BTL driver IC for

driving the motors and actuators in products

such as CD-ROM/DVD-ROM/DVD-Player

drives. Two of the channels use current feedback

to minimize the current phase shift caused by the

influence of load inductance.

˙W43023 is a 4 channel driver for optical disc

motor driver. Dual channel current feedback

type drivers are built in, in addition to dual

channel motor driver.

˙Separating Vcc into Pre-power of sled motor,

Power of loading motor and Power of actuator,

can make batter power efficiency, by low

supply voltage drive.

Applications

CD-ROM drives, DVD drives, DVD-ROM

drives.

˙Stand-by mode built in.

˙Thermal shutdown circuit on chip.

Block Diagram

* All specs and applications shown above subject to change without prior notice.

Page 1 of 9

Rev 1.0 Sep. 13,2005

W43023

WAFER WIN

4-Channel BTL Motor Driver for CD-ROM

Pin Descriptions

Pin No.

Pin name

VINFC

CFCerr1

Function

Focus drive input

For connection of capacitor for the error amp filter

Op-amp input (+) for the sled driver

Op-amp input (-) for the sled driver

Op-amp output for the sled driver

Focus driver feedback pin

Vcc

Power Vcc for sled driver block

Ground for Sled driver block

sled driver output (-)

CFCerr2

VINSL +

VINSL -

VOSL

VNFFC

Vcc

PVcc1

PGND

VOSL -

VOSL +

VOFC -

VOFC +

VOTK +

VOTK -

VOLD +

VOLD -

PGND

sled driver output (+)

Focus driver output (-)

Focus driver output (+)

Tracking driver output (+)

Tracking driver output (-)

Loading driver output (+)

Loading driver output (-)

Ground for Actuator driver block

Tracking driver feedback pin

Power Vcc for Actuator driver block

Ground

VNFTK

PVcc2

GND

VINTK

CTKerr2

CTKerr1

VINTK

BIAS

Loading driver input

For connection of capacitor for the error amp filter

Tracking driver input

Bias input

Mute control

MUTE

Notes: The indicated polarities for the output pins are for when all inputs are (+).

The output H bridge supply pins are PVcc1 for the loading channel, PVcc2 for the focus, tracking

channels, and Vcc for the pre-block and sled channel. Always ensure that Vcc≧PVcc1,2.

PinOut

W43023

* All specs and applications shown above subject to change without prior notice.

Page 2 of 9

Rev 1.0 Sep. 13,2005

W43023

WAFER WIN

4-Channel BTL Motor Driver for CD-ROM

Absolute maximum ratings (Ta = 25^oC)

Parameter

Symbol

Limits

13.5

unit

^oC

Power supply voltage

Power dissipation

V_CC、PVcc1,2

P_d

T_opr

T_stg

1.7^*

Operating temperature

Storage temperature

-35~+85

-55~+150

﹡Reduce by 13.6 mW for each increase in T_aof 1^oC over 25^oC.

When mounted on a 70mm × 70mm × 1.6 mm glass epoxy board.

Recommended operating conditions (Ta = 25^oC)

Parameter

Power supply voltage

Symbol

Vcc

PVcc1

PVcc2

Limits

4.5~13.2

4.5~Vcc

unit

Electrical characteristics

(^{unless otherwise noted, Ta = 25}^o^{C, V}_CC= PV_CC1=12V, PV_CC2=5V, V

=2.5V, R_L1= R_L2=8Ω, R_L3= R_L4=15Ω)

BIAS

Parameter

Quiescent current

Stand-by quiescent current

Voltage for Stand-by ON

Voltage for Stand-by OFF

Symbol Min.

Typ. Max. Unit

Conditions

I_CC

I_ST

0.5

V_STON

V_STOFF

2.0

Output offset current

I_O1,2

-6

1.7

A/V

Maximum output amplitude

V_O1,2

3.6

4.0

V_IN= V

± 1.5V

± 0.2V

BIAS

Trans conductance

Common mode input range

1.3

1.5

V_ICM

-0.3

11.0

=6 V

BIAS

V_ICM

I_BOP

V_OLOP

I_SO

-0.3

4.0

300

0.3

Vcc=PVcc1=5V

Input bias current

0.1

0.5

Low level output voltage

Output source current

Output sink current

0.3

I_SI

Output offset voltage

Maximum output voltage

V_OFFSL-100

V_O3

G_VSL

9.0

20.0

100

22.0

7.5

18.0

V_IN= V

± 1.5V

± 0.2V

BIAS

Closed loop voltage gain

Output offset voltage

V_OFFLD-50

Maximum output voltage

V_O4-1

V_O4-2

7.5

3.6

9.0

V_IN= V

± 1.5V

BIAS

Maximum output voltage

4.0

Vcc=PVcc1=5V

Closed loop voltage gain

Gain error by polarity

G_VLD

13.5

15.5

17.5

V_IN= BIAS ± 0.2V

ΔG_VLD

*This product is not designed for protection against radioactive rays.

* All specs and applications shown above subject to change without prior notice.

Page 3 of 9

Rev 1.0 Sep. 13,2005

W43023

WAFER WIN

4-Channel BTL Motor Driver for CD-ROM

Typical Curve

* All specs and applications shown above subject to change without prior notice.

Page 4 of 9

Rev 1.0 Sep. 13,2005

W43023

WAFER WIN

4-Channel BTL Motor Driver for CD-ROM

* All specs and applications shown above subject to change without prior notice.

Page 5 of 9

Rev 1.0 Sep. 13,2005

W43023

WAFER WIN

4-Channel BTL Motor Driver for CD-ROM

* All specs and applications shown above subject to change without prior notice.

Page 6 of 9

Rev 1.0 Sep. 13,2005

W43023

WAFER WIN

4-Channel BTL Motor Driver for CD-ROM

Test Circuit

W43023

* All specs and applications shown above subject to change without prior notice.

Page 7 of 9

Rev 1.0 Sep. 13,2005

W43023

WAFER WIN

4-Channel BTL Motor Driver for CD-ROM

Application example

W43023

* All specs and applications shown above subject to change without prior notice.

Page 8 of 9

Rev 1.0 Sep. 13,2005

W43023

WAFER WIN

4-Channel BTL Motor Driver for CD-ROM

Operation notes

(1) Thermal-shut-down circuit built in. In case

IC chip temperature rise to 175 ℃ (typ.),

thermal-shut-down circuit operates and

output current muted. Next time IC chip

temperature falls below 150 ℃ (typ.), the

driver blocks start.

(2) In case stand-by-pin voltage under 0.5V or

opened, quiescent current is muted. stand-by-

pin voltage should be over 2.0V for normal

application.

(3) Bias-pin (pin 27) should be pulled up more

than 1.2V. In case bias-pin voltage is pulled

down under 0.9V (typ.), output current is

muted.

(4) Insert the by-pass capacitor between Vcc-pin

and GND-pin of IC as possible as near

(approximatelv 0.1μF).

(5) Heat dissipation fins are attached to the GND

on the inside of the package. Make sure to

connect these to the external GND.

< Supplement >

Current-feedback driver

Trans conductance (output current/input voltage)

is show as follows.

g_m=

(A/V)

R_d+ R_WIRE

_WIRE= 0.15Ω (± 0.05Ω) Au wire

Package Outlines (units:mm): HSOP-28

* All specs and applications shown above subject to change without prior notice.

Page 9 of 9

Rev 1.0 Sep. 13,2005

W43023 [ETC]

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