BA6920FP-YE2 [ROHM]
1.0A Reversible Motor Drivers (Single Motor); 1.0A可逆电机驱动器（单电机）
| 型号： | BA6920FP-YE2 |
| 厂家： | 
ROHM |
| 描述： | 1.0A Reversible Motor Drivers (Single Motor) |
| 文件： | 总18页 (文件大小：325K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Reversible Motor Drivers for Brush Motors
1.0A Reversible
Motor Drivers (Single Motor)
BA6956AN,BA6287F,BA6285FS,BA6285AFP-Y,BA6920FP-Y
No.11008EBT02
●Description
The reversible motor driver for output 1.0A for 1 motor can set the output modes to four modes, normal, reverse, stop
(idling), and braking in accordance with logic input (2 inputs).
●Features
1) Built-in surge absorption diode
2) By built-in power save circuit, current consumption when a motor stops (idles) can be suppressed
3) Output voltage can be optionally set by reference voltage setting pin
4) Built-in thermal shutdown circuit (TSD)
●Applications
Audio-visual equipment; PC peripherals; Car audios; Car navigation systems; OA equipments
●Absolute maximum ratings (Ta=25℃, All voltages are with respect to ground)
Ratings
Parameter
Symbol
Unit
BA6956AN
18
BA6287F
18
BA6285FS BA6285AFP-Y BA6920FP-Y
Supply voltage
VCC
VM
18
18
30
30
36
36
V
V
Supply voltage
18
1*1
18
1*1
Output current
IOMAX
TOPR
TSTG
Pd
1*1
1*1
1*1
A
Operating temperature
Storage temperature
Power dissipation
-20 ~ 75
-55 ~ 150
1.19*2
150
-20 ~ 75
-55 ~ 150
0.689*3
150
-20 ~ 75
-55 ~ 150
0.813*4
150
-40 ~ 85
-55 ~ 150
1.45*5
150
-30 ~ 85
-55 ~ 150
1.45*5
150
℃
℃
W
℃
Junction temperature
Tjmax
*1 Do not, exceed Pd or ASO.
*2 SIP9 package. Derated at 9.5mW/℃ above 25℃.
*3 SOP8 package. Mounted on a 70mm x 70mm x 1.6mm FR4 glass-epoxy board with less than 3% copper foil. Derated at 5.52mW/℃ above 25℃.
*4 SSOP-A16 package. Mounted on a 70mm x 70mm x 1.6mm FR4 glass-epoxy board with less than 3% copper foil. Derated at 6.5mW/℃ above 25℃.
*5 HSOP25 package. Mounted on a 70mm x 70mm x 1.6mm FR4 glass-epoxy board with less than 3% copper foil. Derated at 11.6mW/℃ above 25℃.
●Operating conditions (Ta=25℃)
Ratings
Parameter
Symbol
Unit
BA6956AN
6.5 ~ 15
BA6287F
4.5 ~ 15
BA6285FS BA6285AFP-Y BA6920FP-Y
Supply voltage
Supply voltage
VREF voltage
VCC
VM
4.5 ~ 15
4.5 ~ 15
4.5 ~ 24
4.5 ~ 24
6.5 ~ 34
6.5 ~ 34
V
V
V
6.5 ~ 15
4.5 ~ 15
VREF
< VCC, VM
< VCC, VM
< VCC, VM
< VCC, VM
< VCC, VM
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© 2011 ROHM Co., Ltd. All rights reserved.
2011.05 - Rev.B
1/17
Technical Note
BA6956AN,BA6287F,BA6285FS,BA6285AFP-Y,BA6920FP-Y
●Electrical characteristics (BA6956AN, unless otherwise specified, Ta=25℃ and VCC=9V, VM=9V)
Limits
Parameter
Supply current 1
Symbol
Unit
Conditions
FWD/REV mode
Min.
-
Typ.
29
Max.
44
ICC1
ICC2
ICC3
VIH
VIL
mA
mA
µA
V
Supply current 2
-
-
56
0
80
15
Brake mode
Supply current 3
Standby mode
Input threshold voltage H
Input threshold voltage L
Input bias current
2.0
0
-
VCC
0.8
131
2.3
25
-
V
IIH
50
-
90
1.7
10
µA
V
VIN=2V
Output saturation voltage
VREF bias current
VCE
IREF
IO=0.2A, vertically total
IO=0.2A, VREF=6V
-
µA
●Electrical characteristics (BA6287F, unless otherwise specified, Ta=25℃ and VCC=9V, VM=9V, VREF=9V)
Limits
Parameter
Supply current 1
Symbol
Unit
Conditions
FWD/REV mode
Min.
12
Typ.
24
Max.
36
ICC1
ICC2
IST
mA
mA
µA
V
Supply current 2
29
-
48
0
67
15
Brake mode
Standby current
Standby mode
Input threshold voltage H
Input threshold voltage L
Input bias current
VIH
VIL
2.0
0
-
VCC
0.8
135
1.5
18
-
V
IIH
45
-
90
1.0
12
µA
V
VIN=2V
Output saturation voltage
VREF bias current
VCE
IREF
IO=0.2A, vertically total
IO=0.2A, FWD or REV mode
6
mA
●Electrical characteristics (BA6285FS, unless otherwise specified, Ta=25℃ and VCC=9V, VM=9V, VREF=9V)
Limits
Parameter
Supply current 1
Symbol
Unit
Conditions
FWD/REV mode
Min.
12
Typ.
24
Max.
36
ICC1
ICC2
IST
mA
mA
µA
V
Supply current 2
29
-
48
0
67
15
Brake mode
Standby current
Standby mode
Input threshold voltage H
Input threshold voltage L
Input bias current
VIH
2.0
0
-
VCC
0.8
VIL
-
V
IIH
45
2.0
0
90
-
135
VCC
0.8
µA
V
VIN=2V
Power save on voltage
Power save off voltage
Output saturation voltage
VREF bias current
VPSON
VPSOFF
VCE
IREF
Standby mode
-
V
Operation
-
1.0
12
1.5
V
IO=0.2A, vertically total
IO=0.2A, FWD or REV mode
6
18
mA
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© 2011 ROHM Co., Ltd. All rights reserved.
2011.05 - Rev.B
2/17
Technical Note
BA6956AN,BA6287F,BA6285FS,BA6285AFP-Y,BA6920FP-Y
●Electrical characteristics (BA6285AFP-Y, unless otherwise specified, Ta=25℃ and VCC=9V, VM=9V, VREF=9V)
Limits
Parameter
Supply current 1
Symbol
Unit
Conditions
FWD/REV mode
Min.
10
Typ.
20
Max.
30
ICC1
ICC2
IST
mA
mA
µA
V
Supply current 2
21
-
42
0
63
15
Brake mode
Standby current
Standby mode
Input threshold voltage H
Input threshold voltage L
Input bias current
VIH
2.0
0
-
VCC
0.8
VIL
-
V
IIH
40
-
80
-
120
0.8
µA
V
VIN=2V
Power save on voltage
Power save off voltage
Output saturation voltage
VREF bias current
VPSON
VPSOFF
VCE
IREF
Operation
2.0
-
-
VCC
1.5
V
Standby mode
1.0
15
V
IO=0.2A, vertically total
IO=0.2A, FWD or REV mode
9
21
mA
●Electrical characteristics (BA6920FP-Y, unless otherwise specified, Ta=25℃ and VCC=12V, VM=12V)
Limits
Parameter
Supply current 1
Symbol
Unit
Conditions
FWD/REV mode
Min.
5
Typ.
8
Max.
12
ICC1
ICC2
IST
mA
mA
µA
V
Supply current 2
3
-
5
0
8
Brake mode
Standby current
15
Standby mode
Input threshold voltage H
Input threshold voltage L
Input bias current
VIH
3.0
0
-
VCC
0.8
300
VCC
0.8
3.3
35
VIL
-
V
IIH
100
2.0
-
200
-
µA
V
VIN=3V
Power save on voltage
Power save off voltage
Output saturation voltage
VREF bias current
VPSON
VPSOFF
VCE
IREF
Standby mode
Operation
-
V
-
2.2
12
V
IO=0.2A, vertically total
IO=0.1A, VREF=6V
-
µA
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© 2011 ROHM Co., Ltd. All rights reserved.
2011.05 - Rev.B
3/17
Technical Note
BA6956AN,BA6287F,BA6285FS,BA6285AFP-Y,BA6920FP-Y
●Electrical characteristic curves (Reference data)
40
35
30
25
20
80
70
60
50
40
30
25
20
15
10
-20°C
25°C
75°C
-20°C
25°C
75°C
-20°C
25°C
75°C
6
9
12
15
6
9
12
15
4
8
12
16
Supply Voltage: Vcc [V]
Supply Voltage: Vcc [V]
Supply Voltage: Vcc [V]
Fig.1 Supply current 1 (forward)
(BA6956AN)
Fig.2 Supply current 2 (brake)
(BA6956AN)
Fig.3 Supply current 1 (forward)
(BA6287F)
60
55
50
45
40
40
35
30
25
20
60
-20°C
25°C
75°C
55
50
45
40
-20°C
25°C
75°C
-25°C
25°C
75°C
4
8
12
16
6
9
12
15
6
9
12
15
Supply Voltage: Vcc [V]
Supply Voltage: Vcc [V]
Supply Voltage: Vcc [V]
Fig.4 Supply current 2 (brake)
(BA6287F)
Fig.5 Supply current 1 (forward)
(BA6285FS)
Fig.6 Supply current 2 (brake)
(BA6285FS)
35
30
25
20
15
70
60
50
40
30
20
8
6
4
2
-40°C
25°C
85°C
-40°C
25°C
85°C
-30°C
25°C
85°C
4
8
12
16
20
24
4
8
12
16
20
24
6
12
18
24
30
36
Supply Voltage: Vcc [V]
Supply Voltage: Vcc [V]
Supply Voltage: Vcc [V]
Fig.7 Supply current 1 (forward)
(BA6285AFP-Y)
Fig.8 Supply current 2 (brake)
(BA6285AFP-Y)
Fig.9 Supply current 1 (forward)
(BA6920FP-Y)
12
10
8
8.5
8.0
7.5
7.0
9.0
75°C
25°C
75°C
25°C
-20°C
-20°C
8.5
8.0
7.5
6
-30°C
25°C
85°C
4
6
12
18
24
30
36
0
0.2
0.4
0.6
0.8
1
0
0.2
0.4
0.6
0.8
1
Supply Voltage: Vcc [V]
Output Current: Iout [A]
Output Current: Iout [A]
Fig.10 Supply current 2 (brake)
(BA6920FP-Y)
Fig.11 Output high voltage
(BA6956AN)
Fig.12 Output high voltage
(BA6287F)
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© 2011 ROHM Co., Ltd. All rights reserved.
2011.05 - Rev.B
4/17
Technical Note
BA6956AN,BA6287F,BA6285FS,BA6285AFP-Y,BA6920FP-Y
●Electrical characteristic curves (Reference data) - Continued
9.0
8.5
8.0
7.5
9.0
8.5
8.0
7.5
9.0
8.5
8.0
7.5
7.0
85°C
25°C
75°C
25°C
85°C
25°C
-30°C
-20°C
-40°C
0
0
0
0
0.2
0.4
0.6
0.8
1
0
0
0
0
0.2
0.4
0.6
0.8
1
0
0
0
0.2
0.4
0.6
0.8
1
Output Current: Iout [A]
Output Current: Iout [A]
Output Current: Iout [A]
Fig.13 Output high voltage
(BA6285FS)
Fig.14 Output high voltage
(BA6285AFP-Y)
Fig.15 Output high voltage
(BA6920FP-Y)
1.0
0.8
0.6
0.4
0.2
0.0
1.0
0.8
0.6
0.4
0.2
0.0
1.0
0.8
0.6
0.4
0.2
0.0
75°C
25°C
-20°C
75°C
25°C
75°C
25°C
-20°C
-20°C
0.2
0.4
0.6
0.8
1
0.2
0.4
0.6
0.8
1
0.2
0.4
0.6
0.8
1
Output Current: Iout [A]
Output Current: Iout [A]
Output Current: Iout [A]
Fig.16 Output low voltage
(BA6956AN)
Fig.17 Output low voltage
(BA6287F)
Fig.18 Output low voltage
(BA6285FS)
1.0
0.8
0.6
0.4
0.2
0.0
1.5
1.2
0.9
0.6
0.3
0.0
1.5
1.0
0.5
0.0
85°C
25°C
i) Package only
i) 1.19W
-40°C
85°C
25°C
-30°C
0.2
0.4
0.6
0.8
1
0.2
0.4
0.6
0.8
1
25
50
75
100
125
150
Output Current: Iout [A]
Output Current: Iout [A]
AMBIENT TEMPERATURE [°C]
Fig.19 Output low voltage
(BA6285AFP-Y)
Fig.20 Output low voltage
(BA6920FP-Y)
Fig.21 Thermal derating curve
(SIP9)
1.5
1.0
0.5
0.0
1.5
1.0
0.5
0.0
3
2
1
0
ii) Mounted on ROHM standard PCB
(70mm x 70mm x 1.6mmFR4 glass-epoxy board)
ii) Mounted on ROHM standard PCB
ii) Mounted on ROHMstandard PCB
(70mm x 70mm x 1.6mm FR4 glass-epoxy board)
(70mmx 70mm x 1.6mm FR4 glass-epoxy board)
i) Package only
ii) 0.813W
i) Package only
i) Package only
ii)1.45W
ii) 0.689W
i) 0.625W
i) 0.563W
i)0.85W
25
50
75
100
125
150
25
50
75
100
125
150
0
25
50
75
100
125
150
AMBIENT TEMPERATURE [°C]
AMBIENT TEMPERATURE [°C]
AMBIENT TEMPERATURE [°C]
Fig.22 Thermal derating curve
(SOP8)
Fig.23 Thermal derating curve
(SSOP-A16)
Fig.24 Thermal derating curve
(HSOP25)
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© 2011 ROHM Co., Ltd. All rights reserved.
2011.05 - Rev.B
5/17
Technical Note
BA6956AN,BA6287F,BA6285FS,BA6285AFP-Y,BA6920FP-Y
●Block diagram and pin configuration
BA6956AN
VM
R1
5
6
VCC
TSD
C1
FIN
7
CTRL
VCC
RIN
9
R2
VREF
1
R3
RNF
3
8
4
2
GND
OUT1
C2
OUT2
M
C3
Fig.25 BA6956AN
Table 1 BA6956AN
Function
Pin
1
Name
VREF
OUT2
RNF
OUT1
VM
Reference voltage setting pin
Driver output
2
3
Power ground
4
Driver output
5
Power supply (driver stage)
Power supply (small signal)
Control input (forward)
GND
6
VCC
FIN
7
Fig.26 BA6956AN (SIP9)
8
GND
RIN
9
Control input (reverse)
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© 2011 ROHM Co., Ltd. All rights reserved.
2011.05 - Rev.B
6/17
Technical Note
BA6956AN,BA6287F,BA6285FS,BA6285AFP-Y,BA6920FP-Y
●Block diagram and pin configuration
BA6287F
VCC
R1
C1
VM
2
3
R2
ZD
VCC
VREF
TSD
6
FIN
RIN
4
5
CTRL
GND
8
1
7
OUT1
OUT2
C3
M
C2
Fig.27 BA6287F
Table 2 BA6287F
Function
Pin
1
Name
OUT1
VM
Driver output
OUT1
VM
GND
OUT2
VREF
RIN
2
Power supply (driver stage)
Power supply (small signal)
Control input (forward)
Control input (reverse)
Reference voltage setting pin
Driver output
3
VCC
FIN
VCC
FIN
4
5
RIN
Fig.28 BA6287F (SOP8)
6
VREF
OUT2
GND
7
8
GND
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© 2011 ROHM Co., Ltd. All rights reserved.
2011.05 - Rev.B
7/17
Technical Note
BA6956AN,BA6287F,BA6285FS,BA6285AFP-Y,BA6920FP-Y
●Block diagram and pin configuration
VCC
BA6285FS
R1
C1
VM
4
5
R2
ZD
VCC
TSD
VREF
12
FIN
6
RIN 11
CTRL
SAVE
POWER
8
RNF
16
1
3
14
GND
OUT1
C2
OUT2
C3
M
Fig.29 BA6285FS
Table 3 BA6285FS
Function
Pin
1
Name
GND
NC
GND
2
NC
3
OUT1
VM
Driver output
4
Power supply (driver stage)
GND
NC
RNF
NC
5
VCC
FIN
Power supply (small signal)
OUT1
VM
OUT2
NC
6
Control input (forward)
VCC
FIN
VREF
RIN
NC
7
NC
NC
NC
8
PS
Power save enable pin
PS
NC
9
NC
NC
10
11
12
13
14
15
16
NC
NC
Fig.30 BA6285FS (SSOP-A16)
RIN
VREF
NC
Control input (reverse)
Reference voltage setting pin
NC
OUT2
NC
Driver output
NC
RNF
Power ground
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© 2011 ROHM Co., Ltd. All rights reserved.
2011.05 - Rev.B
8/17
Technical Note
BA6956AN,BA6287F,BA6285FS,BA6285AFP-Y,BA6920FP-Y
●Block diagram and pin configuration
VCC
BA6285AFP-Y
R1
C1
VM
16
17
R2
ZD
VCC
TSD
VREF
21
FIN
18
RIN 20
POWER
CTRL
19
SAVE
RNF
6
FIN
7
8
9
5
GND
GND
OUT1
C2
OUT2
C3
M
Fig.31 BA6285AFP-Y
Table 4 BA6285AFP-Y
Function
Pin
1
Name
NC
NC
2
NC
NC
NC
NC
NC
NC
NC
3
NC
NC
NC
NC
NC
OUT2
RNF
VREF
RIN
4
NC
NC
GND
5
OUT2
RNF
GND
GND
OUT1
NC
Driver output
GND
GND
GND
OUT1
NC
NC
NC
NC
6
Power ground
PS
FIN
VCC
VM
NC
NC
7
GND
GND
Driver output
NC
8
9
Fig.32 BA6285AFP-Y (HSOP25)
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
FIN
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
VM
Power supply (driver stage)
VCC
FIN
PS
Power supply (small signal)
Control input (forward)
Power save enable pin
RIN
VREF
NC
Control input (reverse)
Reference voltage setting pin
NC
NC
NC
NC
NC
NC
NC
GND
GND
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© 2011 ROHM Co., Ltd. All rights reserved.
2011.05 - Rev.B
9/17
Technical Note
BA6956AN,BA6287F,BA6285FS,BA6285AFP-Y,BA6920FP-Y
●Block diagram and pin configuration
BA6920FP-Y
VM
R1
16
17
VCC
TSD
C1
R2
FIN
18
VREF
RNF
RIN 20
POWER
CTRL
21
6
R3
19
SAVE
FIN
8
9
5
OUT1
OUT2
GND
M
C2
C3
Fig.33 BA6920FP-Y
Table 5 BA6920FP-Y
Function
Pin
1
Name
NC
NC
NC
2
NC
NC
NC
NC
NC
3
NC
NC
NC
NC
NC
VREF
RIN
NC
OUT2
RNF
4
NC
NC
5
OUT2
RNF
NC
Driver output
GND
GND
6
Power ground
NC
GND
OUT1
NC
NC
NC
NC
PS
FIN
VCC
VM
NC
NC
7
NC
8
GND
OUT1
NC
GND
9
Driver output
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
FIN
NC
NC
NC
NC
NC
NC
Fig.34 BA6920FP-Y (HSOP25)
NC
NC
NC
NC
NC
VM
Power supply (driver stage)
VCC
FIN
PS
Power supply (small signal)
Control input (forward)
Power save enable pin
RIN
VREF
NC
Control input (reverse)
Reference voltage setting pin
NC
NC
NC
NC
NC
NC
NC
GND
GND
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© 2011 ROHM Co., Ltd. All rights reserved.
2011.05 - Rev.B
10/17
Technical Note
BA6956AN,BA6287F,BA6285FS,BA6285AFP-Y,BA6920FP-Y
●External application components
1) Resistor for the current limitation, R1
This is a current limiting resistor for collector loss reduction and at the time of short-circuited output. It depends on the
power supply voltage used, etc., but choose resistance of about 5 to 10Ω. In addition, set resistance with utmost care
to voltage drop caused by inrush current that flows when the motor is started.
2) Resistors and zener diode for the output high voltage setting, R2, R3 and ZD
These are the resistors and zener diode used when output high voltage is set. As for the voltage, only ( VSAT + VF )
lower than the VREF pin voltage for BA6287F, BA6285FS and BA6285AFP-Y. (Reference values; VSAT ≈ 0.25V, VF ≈
0.75V) Zener diode ZD is recommended to be used instead of resistor R3 when the power supply voltage is unstable
for BA6956AN and BA6920FP-Y.
3) Stabilization capacitor for the power supply line, C1
Please connect the capacitor of 1μF to 100μF for the stabilization of the power supply line, and confirm the motor
operation.
4) Phase compensating capacitor, C2, C3
Noise is generated in output pins or oscillation results in accord with the set mounting state such as power supply
circuit, motor characteristics, PCB pattern artwork, etc. As noise oscillation measures, connect 0.01μF to 0.1μF
capacitors.
●Functional descriptions
1) Operation modes
Table 6 Logic table
IN1
L
IN2
L
OUT1
OUT2
Operation
Stop (idling)
OPEN*
OPEN*
H
L
H
L
L
L
H
L
Forward (OUT1 > OUT2)
Reverse (OUT1 < OUT2)
Brake (stop)
L
H
H
H
* OPEN is the off state of all output transistors. Please note that this is the state of the connected diodes, which differs from that of the mechanical relay.
** Output OUT1 and OUT2 become OPEN regardless of the input logic of FIN and RIN when switching to the power save mode with the POWERSAVE pin.
a) Stand-by mode
In stand-by mode, all output power transistors are turned off, and the motor output goes to high impedance.
b) Forward mode
This operating mode is defined as the forward rotation of the motor when the OUT1 pin is high and OUT2 pin is
low. When the motor is connected between the OUT1 and OUT2 pins, the current flows from OUT1 to OUT2.
c) Reverse mode
This operating mode is defined as the reverse rotation of the motor when the OUT1 pin is low and OUT2 pin is
high. When the motor is connected between the OUT1 and OUT2 pins, the current flows from OUT2 to OUT1.
d) Brake mode
This operating mode is used to quickly stop the motor (short circuit brake).
Note) Switching of rotating direction (FWD/REV)
When the rotating direction is changed over by the motor rotating condition, switch the direction after the motor is
temporarily brought to the BRAKE condition or OPEN condition. It is recommended to keep the relevant conditions
as follows:
via BRAKE: Longer than braking time*. (* the time required for the output L terminal to achieve potential below GND when brake is activated.)
via OPEN: The time longer than 1 ms is recommended.
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© 2011 ROHM Co., Ltd. All rights reserved.
2011.05 - Rev.B
11/17
Technical Note
BA6956AN,BA6287F,BA6285FS,BA6285AFP-Y,BA6920FP-Y
2) Output high voltage setting
This function optionally sets output voltage by the output high voltage setting pin and controls the motor rotating speed.
However, when the output high voltage is set to a low level, consumption at IC increases. Carry out thermal design with
sufficient margin incorporated with the power dissipation (Pd) under the actual application condition taken into account.
a) BA6287F, BA6285FS, BA6285AFP-Y
VM
The circuit diagram associated with the output high voltage setting
VREF pin is as per shown on the right. The output high and low
VREF
voltages VOH and VOL are expressed by:
Q1
Q2
VOH = VREF - ( VSAT(Q1) + VF(Q2)
OL = VSAT(Q3)
)
V
OUT
(Reference values; VSAT ≈ 0.15V, VF ≈ 0.7V)
Q3
In addition, the relation of VREF voltage to output voltage is expressed by:
( VSAT(Q1) + VF(Q2) ) < VREF < VM - VSAT(Q2) + VF(Q2) + VSAT(Q1)
RNF
(GND, BA6287F)
Fig.35 BA6287F, BD6285FS, BA6285AFP-Y
Therefore, when the VREF voltage condition is as follows, the
output high voltage is restricted.
VREF > VM - VSAT(Q2) + VSAT(Q1) + VF(Q2)
VOH = VM - VSAT(Q2)
VM
VM
b) BA6956AN, BA6920FP-Y
VCC
VCC
The circuit diagram associated with the output high
voltage setting VREF pin is as per shown on the right.
The output high and low voltages VOH and VOL are
expressed by:
Q1
Q4
Q1
Q4
Q2
Q2
Q7
Q3
Q6
Q3
Q6
OUT
OUT
RNF
V
OH = VREF + ( VF(Q5) + VF(Q4) ) - ( VF(Q2) + VF(Q3)
VOH ≈ VREF
OL = VSAT(Q6) (BA6956AN)
)
VREF
Q5
VREF
Q5
V
VOL = VSAT(Q7) + VF(Q6) (BA6920FP-Y)
RNF
(Reference values; VSAT ≈ 0.15V, VF ≈ 0.7V)
Fig.36 BA6956AN
Fig.37 BA6920FP-Y
The output high voltage controllable range is expressed by:
VREF < VCC - VSAT(Q1) - VF(Q4) - VF(Q5)
VREF < VM - ( VSAT(Q2) + VF(Q3) ) + ( VF(Q2) + VF(Q3)) - ( VF(Q4) + VF(Q5) ) (BA6956AN)
VREF < VM - VSAT(Q3) + ( VF(Q2) + VF(Q3)) - ( VF(Q4) + VF(Q5) ) (BA6920FP-Y)
When the VREF voltage condition is as follows, the output high voltage is restricted.
VREF > VCC - VSAT(Q1) - VF(Q4) - VF(Q5)
VREF > VM - ( VSAT(Q2) + VF(Q3) ) + ( VF(Q2) + VF(Q3)) - ( VF(Q4) + VF(Q5) ) (BA6956AN)
VREF > VM - VSAT(Q3) + ( VF(Q2) + VF(Q3)) - ( VF(Q4) + VF(Q5) ) (BA6920FP-Y)
VOH = VCC - VSAT(Q1) - VF(Q2) - VF(Q3)
V
OH = VM - VSAT(Q2) - VF(Q3) (BA6956AN)
VOH = VM - VSAT(Q3) (BA6920FP-Y)
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© 2011 ROHM Co., Ltd. All rights reserved.
2011.05 - Rev.B
12/17
Technical Note
BA6956AN,BA6287F,BA6285FS,BA6285AFP-Y,BA6920FP-Y
●Interfaces
POWER
SAVE
FIN
RIN
(BA6285FS, BA6285AFP-Y, BA6920FP-Y)
Fig. 38 FIN, RIN
Fig.39 POWER SAVE
VM
VM
VM
VCC
VCC
VREF
OUT1
OUT2
OUT1
OUT2
OUT1
OUT2
VREF
VREF
RNF
RNF
RNF
(GND, BA6287F)
(BA6956AN)
(BA6287F, BA6285FS, BA6285AFP-Y)
(BA6920FP-Y)
Fig. 40 VCC, VM, OUT1, OUT2, VREF, RNF, GND
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© 2011 ROHM Co., Ltd. All rights reserved.
2011.05 - Rev.B
13/17
Technical Note
BA6956AN,BA6287F,BA6285FS,BA6285AFP-Y,BA6920FP-Y
●Notes for use
1) Absolute maximum ratings
Devices may be destroyed when supply voltage or operating temperature exceeds the absolute maximum rating.
Because the cause of this damage cannot be identified as, for example, a short circuit or an open circuit, it is important
to consider circuit protection measures – such as adding fuses – if any value in excess of absolute maximum ratings is
to be implemented.
2) Connecting the power supply connector backward
Connecting the power supply in reverse polarity can damage the IC. Take precautions against reverse polarity when
connecting the power supply lines, such as adding an external direction diode.
3) Power supply lines
Return current generated by the motor’s Back-EMF requires countermeasures, such as providing a return current path
by inserting capacitors across the power supply and GND (10µF, ceramic capacitor is recommended). In this case, it is
important to conclusively confirm that none of the negative effects sometimes seen with electrolytic capacitors –
including a capacitance drop at low temperatures - occurs. Also, the connected power supply must have sufficient
current absorbing capability. Otherwise, the regenerated current will increase voltage on the power supply line, which
may in turn cause problems with the product, including peripheral circuits exceeding the absolute maximum rating. To
help protect against damage or degradation, physical safety measures should be taken, such as providing a voltage
clamping diode across the power supply and GND.
4) Electrical potential at GND
Keep the GND terminal potential to the minimum potential under any operating condition. In addition, check to
determine whether there is any terminal that provides voltage below GND, including the voltage during transient
phenomena. When both a small signal GND and high current GND are present, single-point grounding (at the set’s
reference point) is recommended, in order to separate the small signal and high current GND, and to ensure that
voltage changes due to the wiring resistance and high current do not affect the voltage at the small signal GND. In the
same way, care must be taken to avoid changes in the GND wire pattern in any external connected component.
5) Thermal design
Use a thermal design that allows for a sufficient margin in light of the power dissipation (Pd) under actual operating
conditions.
6) ASO - Area of Safety Operation
When using the IC, set the output transistor so that it does not exceed absolute maximum ratings or ASO.
7) Inter-pin shorts and mounting errors
Use caution when positioning the IC for mounting on printed circuit boards. The IC may be damaged if there is any
connection error, or if pins are shorted together.
8) Operation in strong electromagnetic fields
Using this product in strong electromagnetic fields may cause IC malfunctions. Use extreme caution with
electromagnetic fields.
9) Built-in thermal shutdown (TSD) circuit
The TSD circuit is designed only to shut the IC off to prevent thermal runaway. It is not designed to protect the IC or
guarantee its operation in the presence of extreme heat. Do not continue to use the IC after the TSD circuit is activated,
and do not operate the IC in an environment where activation of the circuit is assumed.
10) Capacitor between output and GND
In the event a large capacitor is connected between the output and GND, if VCC and VIN are short-circuited with 0V or
GND for any reason, the current charged in the capacitor flows into the output and may destroy the IC. Use a capacitor
smaller than 0.47μF between output and GND.
11) Testing on application boards
When testing the IC on an application board, connecting a capacitor to a low impedance pin subjects the IC to stress.
Therefore, always discharge capacitors after each process or step. Always turn the IC's power supply off before
connecting it to or removing it from the test setup during the inspection process. Ground the IC during assembly steps
as an antistatic measure. Use similar precaution when transporting or storing the IC.
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© 2011 ROHM Co., Ltd. All rights reserved.
2011.05 - Rev.B
14/17
Technical Note
BA6956AN,BA6287F,BA6285FS,BA6285AFP-Y,BA6920FP-Y
12) Regarding the input pin of the IC
This monolithic IC contains P+ isolation and P substrate layers between adjacent elements, in order to keep them
isolated. P-N junctions are formed at the intersection of these P layers with the N layers of other elements, creating a
parasitic diode or transistor. For example, the relation between each potential is as follows:
When GND > Pin A and GND > Pin B, the P-N junction operates as a parasitic diode.
When GND > Pin B, the P-N junction operates as a parasitic transistor.
Parasitic diodes inevitably occur in the structure of the IC. The operation of parasitic diodes can result in mutual
interference among circuits, as well as operating malfunctions and physical damage. Therefore, do not use methods by
which parasitic diodes operate, such as applying a voltage lower than the GND (P substrate) voltage to an input pin.
Resistor
Transistor (NPN)
Pin A
Pin B
Pin B
B
C
E
Pin A
B
C
E
N
N
N
P+
P+
P+
Parasitic
element
P
P
N
N
P+
N
P substrate
P substrate
Parasitic
element
GND
GND
GND
GND
Parasitic element
Parasitic element
Other adjacent elements
Appendix: Example of monolithic IC structure
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© 2011 ROHM Co., Ltd. All rights reserved.
2011.05 - Rev.B
15/17
Technical Note
BA6956AN,BA6287F,BA6285FS,BA6285AFP-Y,BA6920FP-Y
●Ordering part number
6
2
8
5
A
B A
F
P
-
Y
E
2
Part No.
Part No.
6956A
6287
Package
Packaging and forming specification
E2: Embossed tape and reel
None: Tube
N
: SIP9
F
: SOP8
6285
6285A
6920
FS
FP-Y
: SSOP-A16
: HSOP25
SIP9
<Tape and Reel information>
Container
Quantity
Tube
1000pcs
Direction of feed Direction of products is fixed in a container tube
2.8 0.2
21.8 0.2
1
9
2.54
0.6
0.3 0.1
0.8
1.3
Order quantity needs to be multiple of the minimum quantity.
∗
SOP8
<Tape and Reel information>
5.0 0.2
(MAX 5.35 include BURR)
Tape
Embossed carrier tape
2500pcs
+
−
6
°
4°
4
°
Quantity
8
7
6
5
E2
Direction
of feed
The direction is the 1pin of product is at the upper left when you hold
reel on the left hand and you pull out the tape on the right hand
(
)
1
2
3
4
0.595
+0.1
0.17
-
0.05
S
0.1
S
1.27
Direction of feed
1pin
0.42 0.1
Reel
Order quantity needs to be multiple of the minimum quantity.
(Unit : mm)
∗
SSOP-A16
<Tape and Reel information>
6.6 0.2
(MAX 6.95 include BURR)
Tape
Embossed carrier tape
16 15 14 13 12 11 10
9
Quantity
2500pcs
E2
Direction
of feed
The direction is the 1pin of product is at the upper left when you hold
reel on the left hand and you pull out the tape on the right hand
(
)
1
2
3
4
5
6
7
8
0.15 0.1
0.36 0.1
0.1
Direction of feed
1pin
0.8
Reel
(Unit : mm)
Order quantity needs to be multiple of the minimum quantity.
∗
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© 2011 ROHM Co., Ltd. All rights reserved.
2011.05 - Rev.B
16/17
Technical Note
BA6956AN,BA6287F,BA6285FS,BA6285AFP-Y,BA6920FP-Y
HSOP25
<Tape and Reel information>
13.6 0.2
(MAX 13.95 include BURR)
Tape
Embossed carrier tape
2000pcs
Quantity
2.75 0.1
25
14
13
E2
Direction
of feed
The direction is the 1pin of product is at the upper left when you hold
reel on the left hand and you pull out the tape on the right hand
(
)
1
0.25 0.1
1.95 0.1
S
0.1
S
0.8
0.36 0.1
12.0 0.2
Direction of feed
1pin
Reel
Order quantity needs to be multiple of the minimum quantity.
(Unit : mm)
∗
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© 2011 ROHM Co., Ltd. All rights reserved.
2011.05 - Rev.B
17/17
Notice
N o t e s
No copying or reproduction of this document, in part or in whole, is permitted without the
consent of ROHM Co.,Ltd.
The content specified herein is subject to change for improvement without notice.
The content specified herein is for the purpose of introducing ROHM's products (hereinafter
"Products"). If you wish to use any such Product, please be sure to refer to the specifications,
which can be obtained from ROHM upon request.
Examples of application circuits, circuit constants and any other information contained herein
illustrate the standard usage and operations of the Products. The peripheral conditions must
be taken into account when designing circuits for mass production.
Great care was taken in ensuring the accuracy of the information specified in this document.
However, should you incur any damage arising from any inaccuracy or misprint of such
information, ROHM shall bear no responsibility for such damage.
The technical information specified herein is intended only to show the typical functions of and
examples of application circuits for the Products. ROHM does not grant you, explicitly or
implicitly, any license to use or exercise intellectual property or other rights held by ROHM and
other parties. ROHM shall bear no responsibility whatsoever for any dispute arising from the
use of such technical information.
The Products specified in this document are intended to be used with general-use electronic
equipment or devices (such as audio visual equipment, office-automation equipment, commu-
nication devices, electronic appliances and amusement devices).
The Products specified in this document are not designed to be radiation tolerant.
While ROHM always makes efforts to enhance the quality and reliability of its Products, a
Product may fail or malfunction for a variety of reasons.
Please be sure to implement in your equipment using the Products safety measures to guard
against the possibility of physical injury, fire or any other damage caused in the event of the
failure of any Product, such as derating, redundancy, fire control and fail-safe designs. ROHM
shall bear no responsibility whatsoever for your use of any Product outside of the prescribed
scope or not in accordance with the instruction manual.
The Products are not designed or manufactured to be used with any equipment, device or
system which requires an extremely high level of reliability the failure or malfunction of which
may result in a direct threat to human life or create a risk of human injury (such as a medical
instrument, transportation equipment, aerospace machinery, nuclear-reactor controller, fuel-
controller or other safety device). ROHM shall bear no responsibility in any way for use of any
of the Products for the above special purposes. If a Product is intended to be used for any
such special purpose, please contact a ROHM sales representative before purchasing.
If you intend to export or ship overseas any Product or technology specified herein that may
be controlled under the Foreign Exchange and the Foreign Trade Law, you will be required to
obtain a license or permit under the Law.
Thank you for your accessing to ROHM product informations.
More detail product informations and catalogs are available, please contact us.
ROHM Customer Support System
http://www.rohm.com/contact/
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© 2011 ROHM Co., Ltd. All rights reserved.
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A
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