ROHM BA5954FP

Current feedback actuator driver
BA5954FP/FM
Description
BA5954FP/FM is an actuator driver IC for CD-ROM
and DVD players. This actuator driver adopts current
feedback system. This IC incorporates 2 channel
actuator drivers and 2 channel motor drivers.
Current phase lag influenced load inductance is little,
because this type is current feedback.
Dimension (Units : mm)
CD/CD-ROM
Absolute Maximum Ratings (Ta=25˚C)
Supply voltage
Limits
Symbol
Vcc, PVcc1/2
Power dissipation
Pd
Operating temperature range
Topr
Storage temperature range
Tstg
∗ PCB (70mmx70mm, t=1.6mm) glass epoxy mounting.
∗1 Derating : 13.6mW/˚C for operation above Ta=25˚C
∗2 Derating : 17.6mW/˚C for operation above Ta=25˚C
18
(BA5954FP) ∗1
1.7
Parameter
Power supply voltage
Symbol
VCC
4.3
PVCC1
4.3
PVCC2
4.3
Unit
(BA5954FM) ∗2
2.2
+85
~
~ +150
–35
–55
Recommended Operating Conditions (Ta=25˚C)
5.15 ± 0.1
0.8 0.35 ± 0.1
0.08 M
16.0 ± 0.2
14
0.25 ± 0.1
0.1 S
HSOP28 / HSOP-M28
Applications
Parameter
15
0.5 ± 0.2
9.9 ± 0.3
1) Wide dynamic range
VOM4.0V(typ.) at PreVcc=12V,PVcc=5V,RL=8Ω
2) Level shift circuit built in.
3) Thermal-shut-down circuit built in.
4) Stand-by mode built in.
0.11
2.2 ± 0.1
1
Features
18.5 ± 0.2
7.5 ± 0.2
28
Limits
~
~
~
V
W
˚C
˚C
Unit
13.2
V
Vcc
V
Vcc
V
Electrical characteristics (Unless otherwise noted; Ta=25˚C, Vcc=12V, PVcc1=PVcc2=5V, BIAS=2.5V, RL=8Ω, Rd=0.5Ω, C=100pF)
Parameter
Symbol
Min.
-
Typ.
Max.
Unit
Voltage for stand-by ON
Ist
VSTON
-
18
27
mA
-
0.5
0.5
-
-
mA
V
V
Voltage for stand-by OFF
<Actuator driver>
VSTOFF
2.0
Output offset voltage
IOO
-6
Maximum output amplitude
VOM
3.6
-
6
mV
4.0
-
V
Trans conductance
<Sled motor driver/Pre OP-amp>
gm
1.3
1.5
1.7
A/V
Common mode input range
VICM
-0.3
-
Input bias current
IBOP
-
30
11.0
V
VOLOP
ISO
IST
0.3
0.1
300
0.3
nA
V
0.5
-
-
-
mA
mA
Output offset voltage
VOOFSL
-100
0
100
mV
Maximum output voltage
Closed loop voltage gain
<Loading motor driver>
VOMLD
7.5
9.0
-
GVSL
18.0
20.0
22.0
V
dB
Output offset voltage
VOOFLD
-50
0
50
mV
Maximum output voltage
Closed loop voltage gain
VOMLD
3.6
4.0
-
GVLD
13.5
15.5
17.5
VIN=BIAS±0.2V
Gain error by polarity
V
dB
∆GVLD
0
1
2
dB
VIN=BIAS±0.2V
Quiescent current
Stand-by quiescent current
Icc
Low level output voltage
Output source current
Output sink current
<Sled motor driver>
1
Conditions
VIN=BIAS±0.2V
VIN=±0.2V
This product is not designed for protection against radioactive rays.
Application Circuit
µ - COM
Loading
Stand-by
Vcenter
Tracking
Focus
Sled
DSP
Tracking
Coil
5Vor12V
28
27
26
25
26
24
23
10K
Stand
-by
22
Loading
Motor
21
22
PerGND
19
18
17
16
15
PGND
PVcc2
7.5K
20K
20
Rd
M
15K
10K
Loading
Driver
x2
7.5K
Thermal
Shut down
Det. Amp.
Actuator
Driver
PVcc1
PVcc2
Vcc
Det. Amp.
x2
7.5K
20K
Sled
Driver
7.5K
10K
10K
1
2
3
4
5
6
7
Actuator
Driver
25K
7
Vcc
PVcc1
8
9
12V
5Vor12V
PGND
10
11
Sled
Motor
12
13
M
14
Rd
Focus
Coil
Appendix
Notes
No technical content pages of this document may be reproduced in any form or transmitted by any
means without prior permission of ROHM CO.,LTD.
The contents described herein are subject to change without notice. The specifications for the
product described in this document are for reference only. Upon actual use, therefore, please request
that specifications to be separately delivered.
Application circuit diagrams and circuit constants contained herein are shown as examples of standard
use and operation. Please pay careful attention to the peripheral conditions when designing circuits
and deciding upon circuit constants in the set.
Any data, including, but not limited to application circuit diagrams information, described herein
are intended only as illustrations of such devices and not as the specifications for such devices. ROHM
CO.,LTD. disclaims any warranty that any use of such devices shall be free from infringement of any
third party's intellectual property rights or other proprietary rights, and further, assumes no liability of
whatsoever nature in the event of any such infringement, or arising from or connected with or related
to the use of such devices.
Upon the sale of any such devices, other than for buyer's right to use such devices itself, resell or
otherwise dispose of the same, no express or implied right or license to practice or commercially
exploit any intellectual property rights or other proprietary rights owned or controlled by
ROHM CO., LTD. is granted to any such buyer.
Products listed in this document use silicon as a basic material.
Products listed in this document are no antiradiation design.
The products listed in this document are designed to be used with ordinary electronic equipment or devices
(such as audio visual equipment, office-automation equipment, communications devices, electrical
appliances and electronic toys).
Should you intend to use these products with equipment or devices which require an extremely high level of
reliability and the malfunction of with would directly endanger human life (such as medical instruments,
transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers and other
safety devices), please be sure to consult with our sales representative in advance.
About Export Control Order in Japan
Products described herein are the objects of controlled goods in Annex 1 (Item 16) of Export Trade Control
Order in Japan.
In case of export from Japan, please confirm if it applies to "objective" criteria or an "informed" (by MITI clause)
on the basis of "catch all controls for Non-Proliferation of Weapons of Mass Destruction.
Appendix1-Rev1.0