1/5
Structure
Product Name
:
:
Silicon Monolithic Integrated Circuit
Power Driver IC for CD changers
Device Name
:
BD7962FM
Features
:
• 6-ch driver IC comprising of 3 channels for BTL drivers and 3 channels for
loading drivers
• 2 channels of loading drivers providing MOS outputs with a high D-range
(Ron=1.0Ω)
• Provided with a loading driver voltage setting terminal
• In BTL driver 3 channels, individually installed is a pre-stage OP-AMP which
allows a differential input and an addition input.
• A built-in general operational amplifier 1 channel installed
• MUTE SW provided
• A built-in thermal shutdown circuit installed.
• HSOP-M36 package
{ ABSOLUTE MAXIMUM RATINGS (Ta=25°C)
Parameter
Power Supply Voltage
Power Dissipation
Operating Temperature
Range
Storage Temperature
Range
Symbol
Vcc
Pd
Limits
15
2.2 *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 17.6mW/°C.
{ RECOMMENDED OPERATING CONDITIONS
Parameter
Power Supply Voltage 1
(CH1, CH2)
Power Supply Voltage2
(CH3, CH4)
Power Supply Voltage 3
(CH5, CH6)
Symbol
MIN
TYP
MAX
Unit
Vcc1
4.5
5.0
Vcc3
V
Vcc2
4.5
8.0
14.0
V
Vcc3
4.5
8.0
14.0
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, Vcc1=5V, Vcc2=Vcc3=8V, BIAS=1.65V, RL=8Ω, unless otherwise noted.)
Parameter
Quiescent Circuit Current (Voc1)
Quiescent Circuit Current (Voc2)
Quiescent Circuit Current (Voc3)
<BTL Driver CH1 - CH3>
Output Offset Voltage
Maximum Output Amplitude (CH1, CH2)
Maximum Output Amplitude (CH3)
Symbol
ICC1
ICC2
ICC3
MIN.
11.5
1.9
TYP.
0.30
23.0
3.8
MAX.
0.70
32.0
5.7
Unit
mA
VOFS
VOM1
VOM2
-40
3.7
5.4
0
4.0
6.0
+70
-
mV
V
V
Closed Circuit Voltage Gain (CH1 - CH3)
GVC
10
12
14
dB
Difference between positive and negative
voltage gains (CH1 - CH3)
Mute ON Voltage
Mute Reset Voltage
Mute Terminal Input Current
Bias Terminal Inflow Current
<Loading Driver CH4 - CH6>
Output Offset Voltage
Input Terminal Threshold Voltage H
Input Terminal Threshold Voltage L
Maximum Output Amplitude (CH4)
Output Saturation Voltage H (CH5, CH6)
Output Saturation Voltage L (CH5, CH6)
Voltage Gain (Loading)
Difference between positive and negative
voltage gains (Loading)
Input Terminal Inflow Current
LDCONT Terminal Outflow Current
(LDCONT 1)
LDCONT Terminal Outflow Current
(LDCONT 2,3)
<Pre-stage OP-amp / OP-amp>
Input Offset Voltage
Input Bias Current
Common Mode Input Voltage Range
Maximum Output Source Current
Maximum Output Sink Current
Slew Rate
Condition
No load applied
No load applied
No load applied
VIN=BIAS±0.5V, when pre-stage
OP buffered
∆GVC
-20
0
20
dB
VMON
VMOFF
IMUTE
IBIAS
GND
2.0
-
80
75
0.5
Vcc
125
120
V
V
µA
µA
VOFSL
VH
VL
VOML
VOLH
VOLL
GVLD
-35
2.0
GND
5.4
4.0
0
6.0
0.38
0.12
6.0
+35
Vcc
0.5
0.70
0.25
8.0
ｍV
V
V
V
V
V
dB
∆GVLD
-2.0
0
2.0
dB
INL
-
180
270
µA
LDIN=5V
ILDC1
-
-
0.5
mA
LDCONT=5V
ILDC2
-
-
300
nA
LDCONT=5V
VOPOFS
IOPB
VOPICM
Isource
ISNK
SR
-5
0.3
500
2
-
0
800
2
+5
300
VCC-1.2
-
mV
nA
V
µA
mA
V/µs
VMUTE=5VVBIAS=2.5V
VBIAS=2.5V
In brake mode
RL=8Ω
Lo=500mA
Lo=500mA
LDCONT=5V
{ OUTLINE DIMENSIONS
(MAX 18.75 include BURR)
Product
Number
(UNIT: mm)
REV. A
3/5
18
CH1
17
16
CH2
Vcc1
15
13
IN2
10k
11
IN1
10k
LDCONT3
FD6
RV6
RV5
FD5
4
3
1
BIAS
2
Ｍ
CH5
CH6
36
35
Ｍ
BIAS
LDCONT2
8
7
6
5
R
F
-
Control
logic
+
10k
33
34
10k
32
10k
9
LD
+ CONT2
Control
LD
logic
CONT3
R
F
Vcc3
(CH5,CH6)
MUTE
R
Control
logic
+
-
30
31
FD4
10k
IN3
F
RV4
29
MUTE
28
Vcc3
T.S.D
10k
10
27
OPIN
10k
10k
10k
10k
26
10k
12
10k
LD
CONT1
Vcc2
(CH3,CH4)
23
10k
25
24
10k
10k
10k
LDCONT1
10k
10k
10k
14
10k
10k
(CH1,CH2)
Vcc1
レベルシフト
RB491D
Vcc2
10k
22
Ｍ
CH4
21
10k
10k
10k
20
10k
レベルシフト
10k
10k
10k
レベルシフト
Ｍ
CH3
19
レベルシフト
{ APPLICATION CIRCUIT DIAGRAM
T.S.D: (Thermal shutdown)
Resistance unit : [Ω]
{ PIN Description
No.
1
2
3
4
5
Pin name
GND2
OUT5OUT5+
IN5FWD
IN5REV
Description
GND (Loading driver unit)
Loading driver (CH5) output Loading driver (CH5) output +
Loading driver (CH5) FWD input
Loading driver (CH5) REV input
No.
19
20
21
22
23
6
IN6REV
Loading driver (CH6) REV input
24
7
IN6FWD
LDCONT
2
LDCONT
3
OPIN1OP1OUT
OPIN2OP2OUT
Vcc1
OUT2OUT2+
OUT1OUT1+
Loading driver (CH6) FWD input
Loading driver (CH5) voltage setting
terminal
Loading driver (CH6) voltage setting
terminal
CH1 pre-stage OP-amp negative input
CH1 pre-stage OP-amp output
CH2 pre-stage OP-amp negative input
CH2 pre-stage OP-amp output
Power Supply Voltage (CH1, CH2)
BTL driver (CH2) output BTL driver (CH2) output +
BTL driver (CH1) output BTL driver (CH1) output +
25
Pin name
OUT3+
OUT3OUT4+
OUT4Vcc2
LDCONT
1
GND1
26
OPOUT
27
OPIN-
28
29
30
31
32
33
34
35
36
Vcc3
MUTE
IN4REV
IN4FWD
OPIN3OP3OUT
OUT6+
OUT6BIAS
8
9
10
11
12
13
14
15
16
17
18
Description
BTL driver (CH3) output +
BTL driver (CH3) output Loading driver (CH4) output +
Loading driver (CH4) output Power Supply Voltage (CH3, CH4)
Loading driver (CH4) voltage setting
terminal
GND (BTL driver part)
OP-amp output
OP-amp negative input
Power Supply Voltage (CH5, CH6 parts)
BTL driver MUTE terminal
loading driver (CH4) REV input
loading driver (CH4) FWD input
CH3 pre-stage OP-amp negative input
CH3 pre-stage OP-amp output
Loading driver (CH6) output +
loading driver (CH6) output BIAS terminal
* The positive or negative polarity of the BTL driver output corresponds to the output polarity of the
pre-stage OP-amp.
When the pre-stage OP-amp output is H, the positive output will be H while the negative one L.
REV. A
4/5
{ CAUTIONS ON USE
(1) When the mute terminal (Pin 29) is set to open or its voltage drops to 0.5V (typ.) or less, the output
current of the BTL driver part (CH1 to CH3) can be muted.
Under conditions of normal use, it should be pulled up to 2.0V or above.
(2) On the Bias terminal (Pin 36), the applied voltage of 0.7V (Typ.) or less will activate the mute function
on the BTL driver part (CH1-CH3).
Under conditions of normal use, it should be kept 1.1V or above.
(3) Thermal shutdown (TSD) will activate the mute function 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 CH1 and CH2 show the internal bias voltage: Vcc1/2V and the
output terminal of CH3 show the internal bias voltage: (Vcc2-0.7)/2V.
(4) The loading driver functions following to the logic in the table below:
INPUT
FWD
L
L
H
H
(5)
(6)
(7)
(8)
(9)
(10)
(11)
(12)
(13)
(14)
REV
L
H
L
H
OUTPUT
OUT+
OUTHi-Z
Hi-Z
L
H
H
L
L
L
Function
High Impedance
Reverse mode
Forward mode
Brake mode
Although the output voltage can be changed by the input voltage through the LDCONT terminal (gain
6dB Typ.), it never exceeds the maximum output voltage restricted by the power supply voltage even if
applying a voltage much larger than the normal value.
If the LDCONT terminals (Pin 8, Pin 9, Pin 24) are set to 0.7V or less, the outputs of the loading driver
corresponding to the LDCONT terminal will be in the High-impedance mode.
CH4 with the impedance of 40kΩ, however, shows the internal bias voltage: (VCC2-0.7)/2V.
On Vcc2 (Pin 23) must be applied the same voltage as that of Vcc3 (Pin 28) and Vcc1 (Pin 14) or
above.
The radiating FIN must be connected to the external GND.
A Shot key diode must be inserted between OUT4- (Pin 22) and Vcc2 (Pin 23) (see the APPLICATION
CIRCUIT DIAGRAM) to prevent the current induced by a counter electromotive force of the motor from
flowing into the IC.
Short-circuits between output pin-VCC, output pin-GND, or output terminals (load short) must be
avoided. It may damage ICs or produce smoke.
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.
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.
About GND potential
The electric potential of the GND terminal must be kept lowest in the circuitry at any operation states.
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.
About operations in a strong electric field
When used in a strong electric field, note that a malfunction may occur.
ASO
When using this IC, the output Tr. must be set not to exceed the values specified in the absolute
maximum ratings and ASO.
REV. A
5/5
(15) 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
(16) 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.
(17) 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 applying 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.
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Appendix1-Rev2.0