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Structure
Product Name
:
:
Silicon Monolithic Integrated Circuit
Power Driver For Compact Disc Players
Device Name
:
BA5929FP
Features
:
•
•
•
•
•
•
3-ch BTL driver
Use of an HSOP-25 PIN power package can achieve downsizing of the set.
A wide dynamic range (Vcc12=5V, Vcc3=12V, 4.2V (typ.) when RL=8Ω)
A built-in thermal shutdown circuit is installed.
A built-in general operational amplifier installed.
Through the standby terminal, the power saving mode can be set.
{ ABSOLUTE MAXIMUM RATINGS (Ta=25°C)
Parameter
Symbol
Power Supply Voltage
Vcc12, Vcc3
Power Dissipation
Pd
Operating Temperature
Topr
Range
Storage Temperature
Tstg
Range
Limits
13.5
1.45 *1
Unit
V
W
-35 to 85
°C
-55 to 150
°C
*1 When mounted on the glass/epoxy board with the size: 70 mm×70 mm, the thickness: 1.6 mm, and
the rate of copper foil occupancy area: 3% or less.
Over Ta=25°C, derating at the rate of 11.6mW/°C
{ OPERATING CONDITIONS
Parameter
Power Supply
Voltage
Symbol
Limits
Unit
Vcc12, Vcc3
4.5 to 13.2
V
This product has not been checked for the strategic materials (or service) defined in the Foreign
Exchange and Foreign Trade Control Low of Japan so that a verification work is required before
exporting it.
Not designed for radiation resistance.
REV. A
2/5
{ ELECTRIC CHARACTERISTICS (Ta=25°C, Vcc12=5V, Vcc3=12V, BIAS=1.65V, RL=8Ω, unless
otherwise noted.)
Parameter
Standby
Consumption
Current
Consumption
Current (at no signal)
Output Offset
Voltage
Maximum Output
Amplitude (CH1, 2)
Maximum Output
Amplitude (CH3)
Closed Circuit
Voltage Gain (CH1,
2)
Closed Circuit
Voltage Gain (CH3)
Standby Voltage
Standby Reset
Voltage
<OP-AMP>
Offset Voltage
Input Bias Current
High-level Output
Voltage
Low-level Output
Voltage
Output Driving
Current Sink
Output Driving
Current Source
Slew Rate
Symbol
MIN.
TYP
MAX.
Unit
Condition
IST
-
-
100
µA
IQ
-
18
28
mA
Voof
-70
-
70
mV
VOM12
3.8
4.2
-
V
VOM3
8.5
9.5
-
V
GVC12
10.0
11.5
13.0
dB
GVC3
16.0
17.5
19.0
dB
VSTBY
-
-
0.5
V
VSTOFF
2.0
-
-
V
VOFOP
VBOP
-6
-
0
-
6
300
mV
nA
VOHOP
10.0
11.3
-
V
VOLOP
-
0.1
0.4
V
ISI
1.0
5.0
-
mA
VCC with 50Ω attached
ISO
8.0
12.0
-
mA
GND with 50Ω attached
SROP
-
1
-
V/µs
100KHz square wave,
2Vp-p output
No load applied
VIN=0.1Vrms f=1KHz
VIN=0.1Vrms f=1KHz
{ OUTLINE DIMENSIONS, SYMBOLS
Product
Number
(UNIT: mm)
REV. A
3/5
{ APPLICATION CIRCUIT DIAGRAM
0.1μF
13
12
11
×２
T.S.D
9
10
TRACKING
COIL
8
20K
10K
6
20
5
21
4
22
3
23
1
2
24
TRACKING
BIAS
25
0.1μF
20K
20K
20K
PVcc12
7
20K
VCC12=5V
BIAS
FOCUS
SLED
×２
×２
×２
STBY
19
VCC3=12V
level shift
level
shift
×２
×２
level shift
14
18
LOW : ON
HIGH:OFF
GND
STBY
PreVcc
PVcc3
17
16
M
SLED
MOTOR
15
FOCUS COIL
ＳＥＲＶＯ ＰＲＥ ＡＭＰ
Resistance unit : [Ω]
{ PIN NUMBERS, PIN NAMES
No.
Pin Name
1
OPIN2P
2
OPIN2M
3
OPOUT2
4
OPIN1P
5
OPIN1M
6
7
OPOUT1
PVCC12
8
OPOUT3
9
OPIN3M
10
OPIN3P
11
OUT1M
12
13
OUT1P
OUT2M
Description
No.
Pin Name
14
OUT2P
Driver CH2 Positive output
15
OUT3M
Driver CH3 Negative output
16
OUT3P
Driver CH3 Positive output
17
STBY
Standby control terminal
18
GND
GND
19
20
PVCC3
CH3IN
VCC (CH3/pre-stage)
CH3 Input
21
CH2IN
22
OPOUT4
23
OPIN4M
Driver CH1 negative output
24
OPIN4P
Driver CH1 positive output
Driver CH2 negative output
25
BIAS
CH2 Input
Operational amplifier 4
Output
Operational amplifier 4
Inverted input
Operational amplifier 4
Non-inverted input
Bias input
Operational amplifier 2
Non-inverted input
Operational amplifier 2
Inverted input
Operational amplifier 2 Output
Operational amplifier 1
Non-inverted input
Operational amplifier 1
Inverted input
Operational amplifier 1 Output
VCC (CH1/CH2)
Operational amplifier 2 Output
Operational amplifier 2
Inverted input
Operational amplifier 2
Non-inverted input
Description
Note) The positive or negative polarity of driver outputs is determined by the input polarity.
CH1: When the inverted AMP is used for the input stage OP-AMP, the H input results in L at the
negative output pin and H at the positive output pin.
CH2/CH3: Applying the signal H to the input pin results in L at the negative output pin and H at
the positive output pin.
REV. A
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{ CAUTIONS ON USE
(1) Setting the standby terminal (pin 17) voltage to open or to 0.5V (typ.) or less, the driver will turn OFF
and the power saving mode can be set.
Under conditions of normal use, the pin 17 should be pulled-up to 2.0V or above.
(2) On the Bias terminal (pin 25), the applied voltage of 0.7V (typ.) or less will activate a mute function.
Under conditions of normal use, it should be set to 1.3V or above.
(3) Thermal shutdown (TSD) or bias terminal voltage drop will activate the mute function, where only the
driver part can be muted. While muting, the voltage at the output terminal will equal to the internal
reference voltage (approximately Vcc/2).
(4) Connecting a capacitive load to the OP-AMP output results in a phase margin reduction of the amp and
may cause an oscillation or a peak. When connecting a capacitive load, a resistance must be
inserted in series between the output and the capacitive load. And after careful consideration of the
frequency characteristics, the device should be used within the range where no problem is found in
actual use.
(5) The radiating fin must be connected to the external GND.
(6) Short-circuit between output pin -VCC, output pin-GND, or output terminals (load short) must be
avoided.
Mounting the ICs in improper directions may damage themselves or produce smoke.
(7) About absolute maximum ratings
Exceeding the absolute maximum ratings, such as the applied voltage or the operating temperature
range, may cause permanent device damage. As these cases cannot be limited to the broken short
mode or the open mode, if a special mode where the absolute maximum ratings may be exceeded is
assumed, it is recommended to take mechanical safety measures such as attaching fuses.
(8) About power supply lines
As a measure against the back current regenerated by a counter electromotive force of the motor, a
capacitor to be used as a regenerated-current path can be installed between the power supply and
GND and its capacitance value should be determined after careful check that any problems, for
example, a leak capacitance of the electrolytic capacitor at low temperature, are not found in various
characteristics.
(9) About GND potential
The electric potential of the GND terminal must be kept lowest in the circuitry at any operation states.
(10) About thermal design
With consideration of the power dissipation (Pd) under conditions of actual use, a thermal design
provided with an enough margin should be done.
(11) About operations in a strong electric field
When used in a strong electric field, note that a malfunction may occur.
(12) ASO
When using this IC, the output Tr. must be set not to exceed the values specified in the absolute
maximum ratings and ASO.
(13) Thermal shutdown circuit
This IC incorporates a thermal shutdown circuit (TSD circuit). When the chip temperature reaches the
value shown below, the coil output to the motor will be set to open.
The thermal shutdown circuit is designed only to shut off the IC from a thermal runaway and not
intended to protect or guarantee the entire IC functions.
Therefore, users cannot assume that the TSD circuit once activated can be used continuously in the
subsequent operations.
TSD ON Temperature
[°C] (typ.)
175
Hysteresis Temperature
[°C] (typ.)
25
(14) About earth wiring patterns
When a small signal GND and a large current GND are provided, it is recommended that the large
current GND pattern and the small signal GND pattern should be separated and grounded at a single
point of the reference point of the set in order to prevent the voltage of the small signal GND from being
affected by a voltage change caused by the resistance of the pattern wiring and the large current.
Make sure that the GND wiring patterns of the external components will not change, too.
REV. A
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+
(15) This IC is a monolithic IC which has a P isolations and P substrate to isolate elements each other.
This P layer and an N layer in each element form a PN junction to construct various parasitic elements.
Due to the IC structure, the parasitic elements are inevitably created by the potential relationship.
Activation of the parasitic elements can cause interference between circuits and may result in a
malfunction or, consequently, a fatal damage. Therefore, make sure that the IC must not be used
under conditions that may activate the parasitic elements, for example, applying the lower voltage than
the ground level (GND, P substrate) to the input terminals.
In addition, do not apply the voltage to input terminals without applying the power supply voltage to the
IC. Also while applying the power supply voltage, the voltage of each input terminal must not be over
the power supply voltage, or within the guaranteed values in the electric characteristics.
REV. A
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 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 which 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.
It is our top priority to supply products with the utmost quality and reliability. However, there is always a chance
of failure due to unexpected factors. Therefore, please take into account the derating characteristics and allow
for sufficient safety features, such as extra margin, anti-flammability, and fail-safe measures when designing in
order to prevent possible accidents that may result in bodily harm or fire caused by component failure. ROHM
cannot be held responsible for any damages arising from the use of the products under conditions out of the
range of the specifications or due to non-compliance with the NOTES specified in this catalog.
Thank you for your accessing to ROHM product informations.
More detail product informations and catalogs are available, please contact your nearest sales office.
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Appendix1-Rev2.0