YOUDA INTEGRATED CIRCUIT
YD5954
ACTUATOR DRIVER WITH CURRENT FEEDBACK
FOR CD ROM/DVD--YD5954
DESCRIPTION
The YD5954 is a four-channel BTL driver IC for driving the motors and actuators in products such as
CD-ROM/DVD drivers. Two of the channels use current feedback to minimize the current phase shift caused by the
influence of load inductance.
FEATURES
*Wide dynamic range(4.0V(typ.) when Vcc=12V, PV
CC
=5V, and R
L
=8).
*Level shift circuit on chip.
*Thermal shutdown circuit on chip.
BLOCK DIAGRAM
28
27
26
25
24
23
22
21
20
10k
20k
7.5k
7.5k
10k
15K
7.5k
20k
7.5k
10k
25k
+ -
STAND
-BY
THERMAL
SHUT
DOWN
+ -
+-
+
-
+
-
+
-
+
-
X2
DET.AMP
19
18
17
16
15
SLED
DRIVER
ACTUATIO
DRIVER
1
2
3
4
5
6
7
8
9
10
11
12
13
14
PVcc1
PVcc2
X2
DET.AMP
10k
LOADING
DRIVER
ACTUATIO
DRIVER
Vcc
PreGND
PVcc2
PGND
Vcc
PVcc1 PGND
YD5954
WuXi YouDa Electronics Co., Ltd
Add: No.5 Xijin Road, National Hi-Tech Industrial Development Zone, Wuxi Jiangsu China
Tel: 86-510-5205117 86-510-5205108 Fax: 86-510-5205110 Website: www.e-youda.com
SHENZHEN OFFICE Tel 86-755-83740369 13823533350 Fax 86-755-83741418
Ver 3.1 1 of 4 2004-9-20
YOUDA INTEGRATED CIRCUIT
YD5954
ABSOLUTE MAXIMUM RATINGS
(Tamb=25)
PARAMETER SYMBOL
VALUE
UNIT
Power Supply Voltage
V
CC
, PV
CC1
/2 13.5 V
Power Dissipation
P
D
1.7 W
Operating Temperature
Topr
-34 to +85
Storage Temperature
Tstg
-55 to +150
ELECTRICAL CHARACTERISTICS
(Unless other specified, Tamb=25, Vcc=12V, Pvcc1=Pvcc2=5V, BIAS=2.5V, R
L
=8., Rd=0.5, C= 100pF)
PARAMETER SYMBOL TEST
CONDITIONS MIN
TYP
MAX
UNIT
Quiescent Current
Icc
18
27
mA
Actuator Driver
Output Offset Current
I
OOF
-6
6
mA
Maximum Output
Amplitude
V
OM
3.6
4.0
V
Transmission Gain
G
M
V
IN
=BIAS 0.2V
1.3 1.5 1.7 A/V
Loading Driver
Input op-amp Same
Phase Input Range
V
ICM
-0.3
11.0
V
Input Bias Current
(outflow current)
I
BOP
30
300
nA
Output High Level
Voltage
V
OHOP
No
load
10.8
11.1
V
Output Low Level
Voltage
V
OLOP
No
load
0.8 1.1 V
Output Offset Voltage
V
OOFLD
-100
0
100
mV
Maximum Output
Amplitude
V
OMLD
7.5
9.0
V
Closed-circuit Voltage
Gain
G
VLD
V
IN
=BIAS 0.2V
18.0
20.0 22.0 dB
Sled Driver
Offset Voltage
V
OOFSL
-50
0
50
mV
WuXi YouDa Electronics Co., Ltd 2 of 4 Website: www.e-youda.com
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