4-Channel BTL Motor Driver for CD-ROM
Features
CMD5954 is a 4 channel driver for cptical 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.
Stand-by mode built in.
Thermal shutdown circuit on chip.
Description
The CMD5954 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.
Applications
CD-ROM drives, DVD drives, DVD-ROM
drives.
Block Diagram
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN, R.O.C
Email: server@ceramate.com.tw
Tel:886-3-3214525 Http: www.ceramate.com.tw
Fax:886-3-3521052
Page 1 of
9
Rev 1.1 Aug. 5,2002
CMD5954
Pin Descriptions
Pin No.
Pin name
Function
1
VINFC
Focus drive input
2
CFCerr1
For connection of capacitor for the error amp filter
3
CFCerr2
For connection of capacitor for the error amp filter
4
VINSL +
Op-amp input (+) for the sled driver
5
VINSL -
Op-amp input (-) for the sled driver
6
VOSL
Op-amp output for the sled driver
7
VNFFC
Focus driver feedback pin
8
Vcc
Vcc
9
PVcc1
Power Vcc for sled driver block
10
PGND
Ground for Sled driver block
11
VOSL -
sled driver output (-)
12
VOSL +
sled driver output (+)
13
VOFC -
Focus driver output (-)
14
VOFC +
Focus driver output (+)
15
VOTK +
Tracking driver output (+)
16
VOTK -
Tracking driver output (-)
17
VOLD +
Loading driver output (+)
18
VOLD -
Loading driver output (-)
19
PGND
Ground for Actuator driver block
20
VNFTK
Tracking driver feedback pin
21
PVcc2
Power Vcc for Actuator driver block
22
GND
Ground
23
VINTK
Loading driver input
24
CTKerr2
For connection of capacitor for the error amp filter
25
CTKerr1
For connection of capacitor for the error amp filter
26
VINTK
Tracking driver input
27
BIAS
Bias input
28
MUTE
Mute control
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 VccPVcc1,2.
PinOut
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN, R.O.C
Email: server@ceramate.com.tw
Tel:886-3-3214525 Http: www.ceramate.com.tw
Fax:886-3-3521052
Page 2 of
9
Rev 1.1 Aug. 5,2002
CMD5954
4-Channel BTL Motor Driver for CD-ROM
CMD5954
Absolute maximum ratings (Ta = 25
o
C)
Parameter
Symbol
Limits
unit
Power supply voltage
V
CC
PVcc1,2
13.5
V
Power dissipation
P
d
1.7
*
W
Operating temperature
T
opr
-35~+85
o
C
Storage temperature
T
stg
-55~+150
o
C
Reduce by 13.6 mW for each increase in T
a
of 1
o
C over 25
o
C.
When mounted on a 70mm × 70mm × 1.6 mm glass epoxy board.
Recommended operating conditions (Ta = 25
o
C)
Parameter
Symbol
Limits
unit
Vcc
4.5~13.2
V
PVcc1
4.5~Vcc
V
Power supply voltage
PVcc2
4.5~Vcc
V
Electrical characteristics
(
unless otherwise noted, Ta = 25
o
C, V
CC
= PV
CC1
=12V, PV
CC2
=5V, VBIAS=2.5V, R
L1
= R
L2
=8, R
L3
= R
L4
=15
)
Parameter
Symbol Min.
Typ.
Max.
Unit
Conditions
Quiescent current
I
CC
-
18
27
mA
Stand-by quiescent current
I
ST
-
-
0.5
mA
Voltage for Stand-by ON
V
STON
0
-
0.5
V
Voltage for Stand-by OFF
V
STOFF
2.0
-
-
V
<Actuator driver>
Output offset current
I
O1,2
-6
-
6
mA
Maximum output amplitude
V
O1,2
3.6
4.0
-
V
V
IN
= VBIAS ± 1.5V
Trans conductance
Gm
1.3
1.5
1.7
A/V V
IN
= VBIAS ± 0.2V
<Sled motor driver/Pre OP-amp>
V
ICM
-0.3
-
11.0
V
VBIAS =6 V
Common mode input range
V
ICM
-0.3
-
4.0
V
Vcc=PVcc1=5V
Input bias current
I
BOP
-
30
300
nA
Low level output voltage
V
OLOP
-
0.1
0.3
V
Output source current
I
SO
0.3
0.5
-
mA
Output sink current
I
SI
1
-
-
mA
<Sled motor driver>
Output offset voltage
V
OFFSL
-100
0
100
mV
Maximum output voltage
V
O3
7.5
9.0
-
V
V
IN
= VBIAS ± 1.5V
Closed loop voltage gain
G
VSL
18.0
20.0
22.0
dB
V
IN
= VBIAS ± 0.2V
<Loading motor driver>
Output offset voltage
V
OFFLD
-50
0
50
mV
Maximum output voltage
V
O4-1
7.5
9.0
-
V
V
IN
= VBIAS ± 1.5V
Maximum output voltage
V
O4-2
3.6
4.0
-
V
V
IN
= VBIAS ± 1.5V
Vcc=PVcc1=5V
Closed loop voltage gain
G
VLD
13.5
15.5
17.5
dB
V
IN
= BIAS ± 0.2V
Gain error by polarity
G
VLD
0
1
2
dB
V
IN
= BIAS ± 0.2V
*This product is not designed for protection against radioactive rays.
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN, R.O.C
Email: server@ceramate.com.tw
Tel:886-3-3214525 Http: www.ceramate.com.tw
Fax:886-3-3521052
Page 3 of
9
Rev 1.1 Aug. 5,2002
4-Channel BTL Motor Driver for CD-ROM
CMD5954
Typical Curve
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN, R.O.C
Email: server@ceramate.com.tw
Tel:886-3-3214525 Http: www.ceramate.com.tw
Fax:886-3-3521052
Page 4 of
9
Rev 1.1 Aug. 5,2002
4-Channel BTL Motor Driver for CD-ROM
CMD5954
* All specs and applications shown above subject to change without prior notice.
1F-5 NO.66 SEC.2 NAN-KAN RD ., LUCHU , TAOYUAN, TAIWAN, R.O.C
Email: server@ceramate.com.tw
Tel:886-3-3214525 Http: www.ceramate.com.tw
Fax:886-3-3521052
Page 5 of
9
Rev 1.1 Aug. 5,2002
4-Channel BTL Motor Driver for CD-ROM
CMD5954
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