1/5
Structure
Product Name
:
:
Silicon Monolithic Integrated Circuit
Power Driver For CD Players
Device Name
:
BA5984FP
Features
:
• 5-ch driver comprising of 4 channels for BTL drivers and 1 channel for reversible
drivers
• Use of the HSOP-28PIN power package allows downsizing of the set.
• A built-in thermal shutdown circuit installed.
• A wide dynamic range (VCC=8V, 6.0V (Typ.) when RL=8Ω)
<BTL Driver>
• A general op-amp connected to the input terminal allows a differential input and
the addition of signals.
<Loading Driver>
• A built-in brake function installed
• A built-in diode for protecting against over-voltage caused by a counter
electromotive force
{ ABSOLUTE MAXIMUM RATINGS (Ta=25°C)
Parameter
Power Supply Voltage
Power Dissipation
Operating Temperature
Range
Storage Temperature
Range
Symbol
Vcc
Pd
Limits
13.5
1.7 *1
Unit
V
W
Topr
-40 to 85
°C
Tstg
-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 13.6mV/°C.
{ RECOMMENDED OPERATING CONDITIONS (To determine a power supply voltage, the power
dissipation must be taken into consideration.)
VCC
4.3 to 13.2V
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, Vcc=8V, BIAS=2.5V, RL=8Ω, unless otherwise noted.)
Parameter
Symbol
Quiescent Circuit Current
ICC
<BTL Driver>
Output Offset Voltage
VOO
Maximum Output Amplitude
VOM
Voltage Gain
GVC
Mute ON Voltage
VMTON
Mute OFF Voltage
VMTOFF
Mute Terminal Input Current
IMUTE
Bias Terminal Input Current
IBIAS
<Pre-stage Operational Amplifier>
Common Mode Input
VICM
Range
Input Offset Voltage
VOFOP
Input Bias Current
IBOP
High-level Output Voltage
VOHOP
Low-level Output Voltage
VOLOP
Output Driving Current Sink
ISIN
Output Driving Current
ISOU
Source
MIN.
-
TYP.
24
MAX.
34
Unit
mA
Condition
No load applied
-50
5.4
14.0
1.5
-
0
6.0
16.1
180
75
50
18.0
0.5
270
120
mV
V
dB
V
V
µA
µA
VMUTE = 5V
VBIAS = 2.5V
0.5
-
6.8
V
-6
7.5
1
0
-
6
300
0.5
-
mV
nA
V
V
mA
Vcc with 50Ω attached
1
-
-
mA
GND with 50Ω
SROP
-
1
-
V/us
100KHz square wave, 2Vp-p
output
Output Saturation Voltage 1
VSAT1
0.7
1.1
1.6
V
Output Saturation Voltage 1
F/R Difference
∆VSAT1
-
-
0.1
V
Output Saturation Voltage 2
VSAT2
1.0
1.55
2.3
V
<Loading Logic Input>
Input High-level Voltage
Input Low-level Voltage
Input High-level Current
VIHLD
VILLD
IIHLD
1.5
-0.3
-
180
VCC
0.5
270
V
V
µA
Slew Rate
<Loading Driver>
Sum of upper side + lower side,
IL=200mA
F/R Difference of Output
Saturation Voltage 1
Sum of upper side + lower side,
IL=500mA
VFWD=VREV=5V
{ OUTLINE DIMENSIONS, SYMBOLS
Product
Number
(UNIT: mm)
REV. A
3/5
{ APPLICATION CIRCUIT DIAGRAM
K
0
1
K
0
1
＋
−
＋
−
＋
−
＋
−
M
G
N
I
D
A
O
L
K
0
1
︷
E
L
D
N
I
P
S
K
0
1
K
0
1
8
K
6
1
K
6
1
K
0
1
4
24
2
6
26
2
7
27
2
C
C
V
K
0
1
7
7
K
6
1
K
6
1
K
0
1
K
0
1
5
25
2
︷
M
K
0
1
K
0
1
K
0
1
9
E
T
U
M
D
E
L
S
1
1
1
1
02
2
3
2
sr
uo
cr
or
FE
2
2
1
1
0
1
1
2
2
︷
T
F
I
H
S
L
E
V
E
L
M
3
3
1
1
91
1
1
2
g
n
i
kr
co
ar
rr
TE
K
0
1
K
0
1
)
g
n
i
d
a
Eo
TL
Ut
Mp
e
;c
x
'
L
(
'e
4
4
1
1
T
F
I
H
S
L
E
V
E
L
8
1
D
N
G
T
F
I
H
S
L
E
V
E
L
T
F
I
H
S
L
E
V
E
L
K K
0 0
1 1
K
0
1
7
1
K
0
1
6
1
g
n
i
k
c
a
r
T
C
C2
V
r
o
V
5
.
2
K
0
1
K
0
1
5
1
s
u
c
o
F
6
6
︸
5
5
E
L
D
N
I
P
S
4
4
r
e
v
i
r
d
g
n
i
d
a
o
L
F
T
U
O
R
T
U
O
V
E
R
D
W
P
3
3
︸
2
2
88
2
2
D
E
L
S
1
1
︷
g
l
no
r
i
t
d
n
a
oo
Lc
Resistance unit : [Ω]
{ PIN NUMBERS, PIN NAMES
No.
1
Pin name
FWD
2
OPIN1(+)
3
OPIN1(-)
4
OPOUT1
5
OPIN2(+)
Description
Loading driver FWD input terminal
CH1 pre-stage amp non-inverted input
terminal
CH1 pre-stage amp inverted input
terminal
CH1 pre-stage amp output terminal
CH2 pre-stage amp non-inverted input
terminal
CH2 pre-stage amp inverted input
terminal
CH2 pre-stage amp output terminal
Power supply terminal
No.
15
Pin name
VO4(+)
Description
Driver CH4 positive output
16
VO4(-)
Driver CH4 negative output
17
VO3(+)
Driver CH3 positive output
18
VO3(-)
19
GND
Ground terminal
20
BIAS
Bias input terminal
21
22
MUTE
OPOUT3
Loading driver negative output
23
OPIN3(-)
6
OPIN2(-)
7
8
OPOUT2
VCC
9
VOL(-)
10
VOL(+)
Loading driver positive output
24
OPIN3(+)
11
VO2(-)
Driver CH2 negative output
25
OPOUT4
12
VO2(+)
Driver CH2 positive output
26
OPIN4(-)
13
VO1(-)
Driver CH1 negative output
27
OPIN4(+)
14
VO1(+)
Driver CH1 positive output
28
REV
Driver CH3 negative output
Mute control terminal
CH3 pre-stage amp output terminal
CH3 pre-stage amp inverted input
terminal
CH3 pre-stage amp non-inverted input
terminal
CH4 pre-stage amp output terminal
CH4 pre-stage amp inverted input
terminal
CH4 pre-stage amp non-inverted input
terminal
Loading driver REV input terminal
Note) The positive or negative polarity of driver outputs is determined by the input polarity.
(For example, when the voltage on the pin 4 is HIGH, the output voltage on the pin 14 becomes HIGH.)
REV. A
4/5
{ CAUTIONS ON USE
(1) Setting the voltage on the Mute terminal to open or 0.5V or less will activate a mute function for the
output current. Under conditions of normal use, the Mute terminal should be pulled-up to 1.5V or
above.
(2) 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 1.1V or above.
(3) When the power supply voltage drops to 3.8V (Typ.) or less, the mute function will be activated and,
when recovering to 4.0V (Typ.) or above, the circuit will startup again.
(4) Thermal shutdown (TSD) or power supply voltage drop will activate the mute functions on all drivers,
while mute ON or bias terminal voltage drop will on the BTL drivers except loading drivers. The
pre-stage OP-amps cannot be muted in any cases described above. While muting, the output
terminals of the BTL driver are set to the value of the internal bias voltage ((VCC-0.7)/2V).
(5) Loading Driver - Logic Input Truth Table
FWD
(1pin)
L
L
H
H
REV
(28pin)
L
H
L
H
VOL (+)
(10pin)
OPEN
L
H
L
VOL (-)
(9pin)
OPEN
H
L
L
Function
Open mode
Reverse mode
Forward mode
Brake mode
(6) Even though a radiating fin is connected to the GND inside of the package, it must be connected to the
external GND.
(7) Basically, applying a voltage below the IC sub-potential to any terminals must be avoided. Due to a
counter electromotive force of the load, if the output on each driver has dropped to the IC sub-potential
(GND) or less, an operation margin must be considered and examined.
(8) 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.
(9) 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.
(10) About GND potential
The electric potential of the GND terminal must be kept lowest in the circuitry at any operation states.
(11) 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.
(12) About operations in a strong electric field
When used in a strong electric field, note that a malfunction may occur.
(13) ASO
When using this IC, the output Tr must be set not to exceed the values specified in the absolute
maximum ratings and ASO.
(14) Thermal shutdown circuit (Thermal shutdown: TSD)
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
REV. A
5/5
(15) 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.
(16) 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