1/5
Structure
Product Name
:
:
Silicon Monolithic Integrated Circuit
Power Driver For CD Players
Device Name
:
BA5961FV
Features
:
• BTL driver for CD players
• Use of the SSOP-B20W power package allows downsizing of the set.
• PreVcc and PowVcc are supplied independently to achieve an efficient drive.
(PreVcc=12V, PowVcc=5V, 4.2V(Typ.) when RL=8Ω)
• Incorporating a level shift circuit reduces the number of external components.
• A built-in thermal shutdown circuit installed.
• Three OP-AMPs (one pre-stage OP-AMP and two general OP-AMPs) installed.
{ ABSOLUTE MAXIMUM RATINGS
Parameter
Pre-part Power Supply
Voltage
Power-part Power Supply
Voltage
Power Dissipation
Operating Temperature
Range
Storage Temperature
Range
Symbol
Limits
Unit
PreVcc
18
V
PowVcc
18
V
1.18 *1
W
Pd
Topr
-35 to 85
℃
Tstg
-55 to 150
℃
*1 When mounted on PCB (the glass/epoxy board with the size: 70 mm×70 mm, the thickness: 1.6 mm).
Over Ta=25°C, derating at the rate of 9.44mW/°C.
{ OPERATING CONDITIONS
Parameter
Pre-part Power Supply
Voltage
Power-part
Symbol
MIN
TYP
MAX
Unit
PreVcc
4.3
5
13.5
V
PowVcc
4.3
5
PreVcc
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, PreVcc=PowVcc=5V, VBIAS=1.65V, RL=8Ω, unless
otherwise noted.)
Parameter
Quiescent Circuit
Current
<Driver Part>
Output Offset Voltage
Maximum Output
Amplitude
Maximum Output
Amplitude (power
supplies separated)
Closed Circuit Voltage
Gain
Standby ON Voltage
Standby OFF Voltage
<Operational Amplifier>
Offset Voltage
Input Bias Current
Common Mode Input
Voltage Range
High-level Output
Voltage
Low-level Output
Voltage
Output Driving Current
Sink
Output Driving Current
Source
Slew Rate
Symbol
MIN
TYP
MAX
Unit
Condition
IQ
-
10.0
14.0
mA
No load applied
VOOF
-60
-
60
mV
Vin=BIAS=1.65V
VOM
3.0
3.6
-
V
VOMS
3.5
4.2
-
V
PreVcc=12V PowVcc=5V
GVC
16.0
18.0
20.0
dB
Vin=1.35V,1.95V
VSTON
VSTOFF
2.0
-
0.5
-
V
V
VOFOP
IBOP
-6
-
0
30
6
300
mV
nA
VICM
0.1
-
3.8
V
VOH
4.1
4.8
-
V
VOL
-
0.2
0.9
V
ISI
0.5
-
-
mA
ISO
0.5
-
-
mA
SROP
-
1
-
V/µs
Comprised of an invert amp with
Vin=GND
Comprised of an invert amp with
Vin=VCC
100kHz square wave, 2Vpp
output
{ OUTLINE DIMENSIONS, SYMBOLS
Product
number
(UNIT: mm)
REV. A
3/5
{ APPLICATION CIRCUIT DIAGRAM
Resistance unit : [Ω]
{ PIN NUMBERS, PIN NAMES
No.
Pin Name
Description
No.
Pin Name
1
PREGND
Pre part GND
11
OP3+
2
POWGND1
Power part GND (OUT+ side)
12
OP3-
3
OUT+
13
OP3OUT
4
OUT+
14
OP2+
5
POWVCC
15
OP2-
6
OUT-
16
OP2OUT
7
OUT-
17
OP1+
8
POWGND2
Power part GND (OUT- side)
18
OP1-
9
PREVCC
Pre part power supply input
terminal
19
IN
10
STBY
Standby terminal
20
BIAS
Driver positive output
terminal
Driver positive output
terminal
Power part power supply
input terminal
Driver negative output
terminal
Driver negative output
terminal
REV. A
Description
OP-amp 3
Non-inverted input terminal
OP-amp 3
Inverted input terminal
OP-amp 3 Output terminal
OP-amp 2
Non-inverted input terminal
OP-amp 2
Inverted input terminal
OP-amp 2 Output terminal
OP-amp 1
Non-inverted input terminal
OP-amp 1
Inverted input terminal
OP-amp 1
Output terminal and driver
input terminal
Bias terminal
4/5
{ CAUTIONS ON USE
(1) Setting the Standby terminal (pin 10) to 0.5V or less allows the circuit to enter the standby mode.
Under conditions of normal use, the pin 10 should be pulled-up to 2.0V or above.
(2) When PreVcc (pin 9) has dropped to 3.4V (typ.) or less, the output current will be muted and, when
PreVcc has recovered to 3.6V (typ.), the driver part circuit will be initiated.
(3) When the voltage applied on the Bias terminal (pin 20) has dropped to 0.7V (Typ.) or less, the mute
function will be activated. Under conditions of normal use, it should be set to 1.0V or above.
(4) Thermal shutdown (TSD), bias terminal voltage drop or power supply voltage drop will activate the
mute function, where only the driver part can be muted.
The output terminals will show the voltage equals to the internal reference voltage (approximately
(PowVcc-Vf)/2).
(5) 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.
(6) Short-circuits between output pin-VCC, output pin-GND, or output terminals (load short) must be
avoided. Make sure that the ICs are installed on the board in proper directions.
Mounting the ICs in improper directions may damage them 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
5/5
(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