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
BA6956AN
BA6287F
BA6285FS
BA6285AFP-Y BA6920FP-Y
Unit
Supply voltage
VCC
18
18
18
30
36
V
Supply voltage
VM
18
18
18
30
36
V
Output current
IOMAX
1*1
1*1
1*1
1*1
1*1
A
Operating temperature
TOPR
-20 ~ 75
-20 ~ 75
-20 ~ 75
-40 ~ 85
-30 ~ 85
℃
Storage temperature
TSTG
-55 ~ 150
-55 ~ 150
-55 ~ 150
-55 ~ 150
-55 ~ 150
℃
Pd
1.19*2
0.689*3
0.813*4
1.45*5
1.45*5
W
Tjmax
150
150
150
150
150
℃
Power dissipation
Junction temperature
*1
*2
*3
*4
*5
Do not, exceed Pd or ASO.
SIP9 package. Derated at 9.5mW/℃ above 25℃.
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℃.
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℃.
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℃)
Parameter
Symbol
Ratings
BA6956AN
BA6287F
BA6285FS
BA6285AFP-Y BA6920FP-Y
Unit
Supply voltage
VCC
6.5 ~ 15
4.5 ~ 15
4.5 ~ 15
4.5 ~ 24
6.5 ~ 34
V
Supply voltage
VM
6.5 ~ 15
4.5 ~ 15
4.5 ~ 15
4.5 ~ 24
6.5 ~ 34
V
VREF voltage
VREF
< VCC, VM
< VCC, VM
< VCC, VM
< VCC, VM
< VCC, VM
V
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© 2011 ROHM Co., Ltd. All rights reserved.
1/17
2011.05 - Rev.B
Technical Note
BA6956AN,BA6287F,BA6285FS,BA6285AFP-Y,BA6920FP-Y
●Electrical characteristics (BA6956AN, unless otherwise specified, Ta=25℃ and VCC=9V, VM=9V)
Limits
Parameter
Symbol
Unit
Conditions
Min.
Typ.
Max.
Supply current 1
ICC1
-
29
44
mA
FWD/REV mode
Supply current 2
ICC2
-
56
80
mA
Brake mode
Supply current 3
ICC3
-
0
15
µA
Standby mode
Input threshold voltage H
VIH
2.0
-
VCC
V
Input threshold voltage L
VIL
0
-
0.8
V
Input bias current
IIH
50
90
131
µA
VIN=2V
Output saturation voltage
VCE
-
1.7
2.3
V
IO=0.2A, vertically total
VREF bias current
IREF
-
10
25
µA
IO=0.2A, VREF=6V
●Electrical characteristics (BA6287F, unless otherwise specified, Ta=25℃ and VCC=9V, VM=9V, VREF=9V)
Limits
Parameter
Symbol
Unit
Conditions
Min.
Typ.
Max.
Supply current 1
ICC1
12
24
36
mA
FWD/REV mode
Supply current 2
ICC2
29
48
67
mA
Brake mode
Standby current
IST
-
0
15
µA
Standby mode
Input threshold voltage H
VIH
2.0
-
VCC
V
Input threshold voltage L
VIL
0
-
0.8
V
Input bias current
IIH
45
90
135
µA
VIN=2V
Output saturation voltage
VCE
-
1.0
1.5
V
IO=0.2A, vertically total
VREF bias current
IREF
6
12
18
mA
IO=0.2A, FWD or REV mode
●Electrical characteristics (BA6285FS, unless otherwise specified, Ta=25℃ and VCC=9V, VM=9V, VREF=9V)
Limits
Parameter
Symbol
Unit
Conditions
Min.
Typ.
Max.
Supply current 1
ICC1
12
24
36
mA
FWD/REV mode
Supply current 2
ICC2
29
48
67
mA
Brake mode
Standby current
IST
-
0
15
µA
Standby mode
Input threshold voltage H
VIH
2.0
-
VCC
V
Input threshold voltage L
VIL
0
-
0.8
V
Input bias current
IIH
45
90
135
µA
VIN=2V
Power save on voltage
VPSON
2.0
-
VCC
V
Standby mode
Power save off voltage
VPSOFF
0
-
0.8
V
Operation
Output saturation voltage
VCE
-
1.0
1.5
V
IO=0.2A, vertically total
VREF bias current
IREF
6
12
18
mA
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© 2011 ROHM Co., Ltd. All rights reserved.
2/17
IO=0.2A, FWD or REV mode
2011.05 - Rev.B
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
Symbol
Unit
Conditions
Min.
Typ.
Max.
Supply current 1
ICC1
10
20
30
mA
FWD/REV mode
Supply current 2
ICC2
21
42
63
mA
Brake mode
Standby current
IST
-
0
15
µA
Standby mode
Input threshold voltage H
VIH
2.0
-
VCC
V
Input threshold voltage L
VIL
0
-
0.8
V
Input bias current
IIH
40
80
120
µA
VIN=2V
Power save on voltage
VPSON
-
-
0.8
V
Operation
Power save off voltage
VPSOFF
2.0
-
VCC
V
Standby mode
Output saturation voltage
VCE
-
1.0
1.5
V
IO=0.2A, vertically total
VREF bias current
IREF
9
15
21
mA
IO=0.2A, FWD or REV mode
●Electrical characteristics (BA6920FP-Y, unless otherwise specified, Ta=25℃ and VCC=12V, VM=12V)
Limits
Parameter
Symbol
Unit
Conditions
Min.
Typ.
Max.
Supply current 1
ICC1
5
8
12
mA
FWD/REV mode
Supply current 2
ICC2
3
5
8
mA
Brake mode
Standby current
IST
-
0
15
µA
Standby mode
Input threshold voltage H
VIH
3.0
-
VCC
V
Input threshold voltage L
VIL
0
-
0.8
V
Input bias current
IIH
100
200
300
µA
VIN=3V
Power save on voltage
VPSON
2.0
-
VCC
V
Standby mode
Power save off voltage
VPSOFF
-
-
0.8
V
Operation
Output saturation voltage
VCE
-
2.2
3.3
V
IO=0.2A, vertically total
VREF bias current
IREF
-
12
35
µA
IO=0.1A, VREF=6V
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© 2011 ROHM Co., Ltd. All rights reserved.
3/17
2011.05 - Rev.B
Technical Note
BA6956AN,BA6287F,BA6285FS,BA6285AFP-Y,BA6920FP-Y
●Electrical characteristic curves (Reference data)
35
30
-20°C
25°C
75°C
25
20
30
70
60
-20°C
25°C
75°C
50
40
6
9
12
6
9
15
4
-20°C
25°C
75°C
45
12
-20°C
25°C
75°C
30
25
6
9
Supply Voltage: Vcc [V]
12
6
20
15
60
50
40
30
8
Fig.7 Supply current 1 (forward)
(BA6285AFP-Y)
12
16
20
24
4
6
12
6
-30°C
25°C
85°C
4
8.0
7.5
7.0
30
36
Supply Voltage: Vcc [V]
Fig.10 Supply current 2 (brake)
(BA6920FP-Y)
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© 2011 ROHM Co., Ltd. All rights reserved.
30
36
9.0
75°C
25°C
-20°C
Output High Voltage: VOH [V] _
Output High Voltage: VOH [V] _
8
24
Fig.9 Supply current 1 (forward)
(BA6920FP-Y)
8.5
10
18
Supply Voltage: Vcc [V]
Fig.8 Supply current 2 (brake)
(BA6285AFP-Y)
12
24
6
Supply Voltage: Vcc [V]
Supply Voltage: Vcc [V]
18
-30°C
25°C
85°C
2
4
24
15
8
-40°C
25°C
85°C
20
20
12
Fig.6 Supply current 2 (brake)
(BA6285FS)
Circuit Current: Icc1 [mA] _
25
12
9
Supply Voltage: Vcc [V]
Fig.5 Supply current 1 (forward)
(BA6285FS)
Circuit Current: Icc2 [mA] _
30
6
-25°C
25°C
75°C
45
Supply Voltage: Vcc [V]
-40°C
25°C
85°C
16
50
15
70
12
55
40
16
35
16
60
35
Fig.4 Supply current 2 (brake)
(BA6287F)
12
Fig.3 Supply current 1 (forward)
(BA6287F)
20
8
8
Supply Voltage: Vcc [V]
Supply Current: Icc2 [mA]_
50
Circuit Current: Icc1 [mA] _
Supply Current: Icc2 [mA]_
55
40
Circuit Current: Icc1 [mA] _
12
40
4
-20°C
25°C
75°C
15
Fig.2 Supply current 2 (brake)
(BA6956AN)
60
8
20
Supply Voltage: Vcc [V]
Fig.1 Supply current 1 (forward)
(BA6956AN)
4
25
10
15
Supply Voltage: Vcc [V]
Circuit Current: Icc2 [mA] _
Circuit Current: Icc1 [mA] _
80
Circuit Current: Icc2 [mA] _
Supply Current: Icc1 [mA]_
40
75°C
25°C
-20°C
8.5
8.0
7.5
0
0.2
0.4
0.6
0.8
1
Output Current: Iout [A]
Fig.11 Output high voltage
(BA6956AN)
4/17
0
0.2
0.4
0.6
0.8
1
Output Current: Iout [A]
Fig.12 Output high voltage
(BA6287F)
2011.05 - Rev.B
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
85°C
25°C
-40°C
8.5
8.0
7.5
0
0.2
0.4
0.6
0.8
1
0.2
0.6
0.8
0.6
0.4
0.2
0.0
0
0.8
0.6
0.4
75°C
25°C
-20°C
0.2
Fig.16 Output low voltage
(BA6956AN)
0.2
0.4
0.6
0.8
0.2
0.0
0
0.2
0.8
0.8
1
Fig.18 Output low voltage
(BA6285FS)
1.5
i) Package only
i) 1.19W
1.0
0.9
0.6
0.5
85°C
25°C
-30°C
0.3
0.0
0
0.2
Output Current: Iout [A]
0.4
0.6
0.8
1
0
25
Output Current: Iout [A]
Fig.19 Output low voltage
(BA6285AFP-Y)
50
75
100
125
150
AMBIENT TEMPERATURE [°C]
Fig.20 Output low voltage
(BA6920FP-Y)
Fig.21 Thermal derating curve
(SIP9)
1.5
3
ii) Mounted on ROHM standard PCB
ii) Mounted on ROHM standard PCB
ii) Mounted on ROHM standard PCB
(70mm x 70mm x 1.6mm FR4 glas s-epox y board)
(70mm x 70mm x 1.6mm FR4 glass -epox y board)
(70mm x 70mm x 1.6mm FR4 glas s -epoxy board)
i) Package only
i) Package only
1.0
0.6
1.2
1
1.5
0.4
Output Current: Iout [A]
0.0
0.6
75°C
25°C
-20°C
0.2
Pd [W]
Output Low Voltage: VOL [V]_
0.4
0.4
0.4
Fig.17 Output low voltage
(BA6287F)
0.6
0.2
0.6
1
1.5
0.8
1
0.8
Output Current: Iout [A]
85°C
25°C
-40°C
0.8
0.0
0
1.0
0.6
Fig.15 Output high voltage
(BA6920FP-Y)
0.8
1
0.4
1.0
Output Current: Iout [A]
0
0.2
Output Current: Iout [A]
0.0
0.6
7.5
1
Output Low Voltage: VOL [V]_
0.8
Output Low Voltage: VOL [V]_
Output Low Voltage: VOL [V]_
0.4
1.0
75°C
25°C
-20°C
0.4
8.0
Fig.14 Output high voltage
(BA6285AFP-Y)
1.0
0.2
8.5
Output Current: Iout [A]
Fig.13 Output high voltage
(BA6285FS)
0
85°C
25°C
-30°C
7.0
0
Output Current: Iout [A]
Output Low Voltage: VOL [V]_
Output High Voltage: VOH [V] _
75°C
25°C
-20°C
Output High Voltage: VOH [V] _
Output High Voltage: VOH [V] _
9.0
i) Package only
1.0
2
ii) 0.689W
0.5
Pd [W]
Pd [W]
Pd [W]
ii) 0.813W
0.5
1
i) 0.625W
i) 0.563W
ii)1.45W
i)0.85W
0.0
0.0
0
25
50
75
100
125
150
0
0
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.
5/17
2011.05 - Rev.B
Technical Note
BA6956AN,BA6287F,BA6285FS,BA6285AFP-Y,BA6920FP-Y
●Block diagram and pin configuration
BA6956AN
VM
R1
5
VCC
TSD
FIN
6
C1
7
CTRL
VCC
RIN
9
R2
VREF
1
R3
3
8
4
2
OUT1
GND
RNF
OUT2
M
C2
C3
Fig.25 BA6956AN
Table 1 BA6956AN
3
RNF
Power ground
4
OUT1
Driver output
5
VM
Power supply (driver stage)
6
VCC
Power supply (small signal)
7
FIN
Control input (forward)
8
GND
GND
9
RIN
Control input (reverse)
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© 2011 ROHM Co., Ltd. All rights reserved.
RIN
Driver output
FIN
OUT2
GND
2
VM
Reference voltage setting pin
VCC
VREF
RNF
1
OUT1
Function
OUT2
Name
VREF
Pin
Fig.26 BA6956AN (SIP9)
6/17
2011.05 - Rev.B
Technical Note
BA6956AN,BA6287F,BA6285FS,BA6285AFP-Y,BA6920FP-Y
●Block diagram and pin configuration
BA6287F
VCC
R1
VM
2
R2
VCC
3
C1
TSD
FIN
RIN
6
VREF
ZD
4
CTRL
5
8
1
GND
7
OUT1
OUT2
M
C2
C3
Fig.27 BA6287F
Table 2 BA6287F
Pin
Name
1
OUT1
2
VM
Function
Driver output
OUT1
Power supply (driver stage)
3
VCC
Power supply (small signal)
4
FIN
Control input (forward)
5
RIN
Control input (reverse)
6
VREF
Reference voltage setting pin
7
OUT2
Driver output
8
GND
GND
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© 2011 ROHM Co., Ltd. All rights reserved.
GND
VM
OUT2
VCC
VREF
FIN
RIN
Fig.28 BA6287F (SOP8)
7/17
2011.05 - Rev.B
Technical Note
BA6956AN,BA6287F,BA6285FS,BA6285AFP-Y,BA6920FP-Y
●Block diagram and pin configuration
BA6285FS
VCC
R1
VM
4
R2
VCC
TSD
5
VREF
C1
ZD
12
FIN
6
RIN 11
SAVE
POWER
CTRL
8
RNF
16
1
3
GND
14
OUT1
OUT2
M
C2
C3
Fig.29 BA6285FS
Table 3 BA6285FS
Pin
Name
1
GND
Function
GND
2
NC
3
OUT1
NC
4
VM
Power supply (driver stage)
5
VCC
Power supply (small signal)
6
FIN
Control input (forward)
7
NC
NC
8
PS
Power save enable pin
9
NC
NC
10
NC
NC
11
RIN
Control input (reverse)
12
VREF
13
NC
14
OUT2
15
NC
NC
16
RNF
Power ground
Driver output
GND
NC
OUT1
VM
VCC
FIN
NC
PS
RNF
NC
OUT2
NC
VREF
RIN
NC
NC
Fig.30 BA6285FS (SSOP-A16)
Reference voltage setting pin
NC
Driver output
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© 2011 ROHM Co., Ltd. All rights reserved.
8/17
2011.05 - Rev.B
Technical Note
BA6956AN,BA6287F,BA6285FS,BA6285AFP-Y,BA6920FP-Y
●Block diagram and pin configuration
BA6285AFP-Y
VCC
R1
VM
16
R2
VCC
TSD
17
VREF
C1
ZD
21
FIN 18
RIN 20
CTRL
POWER
19
SAVE
RNF
6
FIN
7
8
9
GND
5
OUT1
GND
OUT2
M
C2
C3
Fig.31 BA6285AFP-Y
Table 4 BA6285AFP-Y
Pin
Name
Function
1
NC
NC
2
NC
NC
3
NC
NC
4
NC
NC
5
OUT2
Driver output
6
RNF
Power ground
7
GND
GND
8
GND
GND
9
OUT1
Driver output
10
NC
NC
11
NC
NC
12
NC
NC
13
NC
NC
14
NC
NC
15
NC
NC
16
VM
Power supply (driver stage)
17
VCC
Power supply (small signal)
18
FIN
Control input (forward)
19
PS
Power save enable pin
20
RIN
Control input (reverse)
21
VREF
22
NC
NC
23
NC
NC
24
NC
NC
25
NC
NC
FIN
GND
NC
NC
NC
NC
OUT2
RNF
GND
GND
GND
OUT1
NC
NC
NC
NC
NC
NC
NC
NC
VREF
RIN
GND
PS
FIN
VCC
VM
NC
NC
Fig.32 BA6285AFP-Y (HSOP25)
Reference voltage setting pin
GND
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9/17
2011.05 - Rev.B
Technical Note
BA6956AN,BA6287F,BA6285FS,BA6285AFP-Y,BA6920FP-Y
●Block diagram and pin configuration
BA6920FP-Y
VM
R1
16
VCC
TSD
17
C1
FIN 18
R2
RIN 20
VREF
CTRL
21
R3
POWER
19
SAVE
RNF
6
FIN
8
9
5
OUT1
GND
OUT2
M
C2
C3
Fig.33 BA6920FP-Y
Table 5 BA6920FP-Y
Pin
Name
1
NC
NC
Function
2
NC
NC
3
NC
NC
4
NC
NC
5
OUT2
Driver output
6
RNF
Power ground
7
NC
NC
8
GND
GND
9
OUT1
Driver output
10
NC
NC
11
NC
NC
12
NC
NC
13
NC
NC
14
NC
NC
15
NC
NC
16
VM
Power supply (driver stage)
17
VCC
Power supply (small signal)
18
FIN
Control input (forward)
19
PS
Power save enable pin
20
RIN
21
VREF
22
NC
NC
23
NC
NC
24
NC
NC
25
NC
NC
FIN
GND
NC
NC
NC
NC
OUT2
RNF
GND
NC
GND
OUT1
NC
NC
NC
NC
NC
NC
NC
NC
VREF
RIN
GND
PS
FIN
VCC
VM
NC
NC
Fig.34 BA6920FP-Y (HSOP25)
Control input (reverse)
Reference voltage setting pin
GND
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© 2011 ROHM Co., Ltd. All rights reserved.
10/17
2011.05 - Rev.B
BA6956AN,BA6287F,BA6285FS,BA6285AFP-Y,BA6920FP-Y
Technical Note
●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
IN2
OUT1
OUT2
Operation
L
L
OPEN*
OPEN*
Stop (idling)
H
L
H
L
Forward (OUT1 > OUT2)
L
H
L
H
Reverse (OUT1 < OUT2)
H
H
L
L
Brake (stop)
* 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.
11/17
2011.05 - Rev.B
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
voltages VOH and VOL are expressed by:
VREF
Q1
Q2
VOH = VREF - ( VSAT(Q1) + VF(Q2) )
VOL = VSAT(Q3)
(Reference values; VSAT ≈ 0.15V, VF ≈ 0.7V)
OUT
Q3
In addition, the relation of VREF voltage to output voltage is expressed by:
RNF
(GND, BA6287F)
( VSAT(Q1) + VF(Q2) ) < VREF < VM - VSAT(Q2) + VF(Q2) + VSAT(Q1)
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)
b) BA6956AN, BA6920FP-Y
VM
VM
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
VCC
Q1
Q2
Q4
Q2
Q4
Q3
Q3
OUT
VOH = VREF + ( VF(Q5) + VF(Q4) ) - ( VF(Q2) + VF(Q3) )
VOH ≈ VREF
VOL = VSAT(Q6) (BA6956AN)
VOL = VSAT(Q7) + VF(Q6) (BA6920FP-Y)
(Reference values; VSAT ≈ 0.15V, VF ≈ 0.7V)
The output high voltage controllable range is expressed by:
VREF
Q5
VREF
Q6
Q7
Q6
RNF
Fig.36 BA6956AN
OUT
Q5
RNF
Fig.37 BA6920FP-Y
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)
VOH = VM - VSAT(Q2) - VF(Q3) (BA6956AN)
VOH = VM - VSAT(Q3) (BA6920FP-Y)
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© 2011 ROHM Co., Ltd. All rights reserved.
12/17
2011.05 - Rev.B
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
(BA6956AN)
RNF
(GND, BA6287F)
(BA6287F, BA6285FS, BA6285AFP-Y)
Fig. 40
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© 2011 ROHM Co., Ltd. All rights reserved.
RNF
(BA6920FP-Y)
VCC, VM, OUT1, OUT2, VREF, RNF, GND
13/17
2011.05 - Rev.B
BA6956AN,BA6287F,BA6285FS,BA6285AFP-Y,BA6920FP-Y
Technical Note
●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.
14/17
2011.05 - Rev.B
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.
Transistor (NPN)
Resistor
Pin A
Pin B
C
Pin B
B
E
Pin A
B
N
P
+
N
P+
P
N
Parasitic
element
N
P+
Parasitic element
P+
P
N
E
P substrate
P substrate
GND
C
N
Parasitic
Parasitic element
GND
GND
GND element
Other adjacent elements
Appendix: Example of monolithic IC structure
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© 2011 ROHM Co., Ltd. All rights reserved.
15/17
2011.05 - Rev.B
Technical Note
BA6956AN,BA6287F,BA6285FS,BA6285AFP-Y,BA6920FP-Y
●Ordering part number
B
6
A
Part No.
2
8
5
A
F
Part No.
6956A
6287
6285
6285A
6920
P
-
Y
Package
N
: SIP9
F
: SOP8
FS
: SSOP-A16
FP-Y
: HSOP25
E
2
Packaging and forming specification
E2: Embossed tape and reel
None: Tube
SIP9
2.8±0.2
Tube
Quantity
1000pcs
Direction of feed
Direction of products is fixed in a container tube
1.2
3.5±0.5
10.5±0.5
5.8±0.2
21.8±0.2
Container
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
7
5
6
+6°
4° −4°
6.2±0.3
4.4±0.2
0.3MIN
8
1 2
3
0.9±0.15
5.0±0.2
(MAX 5.35 include BURR)
Tape
Embossed carrier tape
Quantity
2500pcs
Direction
of feed
E2
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
)
4
0.595
1.5±0.1
+0.1
0.17 -0.05
S
S
0.11
0.1
1.27
1pin
0.42±0.1
Reel
(Unit : mm)
Direction of feed
∗ Order quantity needs to be multiple of the minimum quantity.
SSOP-A16
6.6 ± 0.2
(MAX 6.95 include BURR)
Tape
Embossed carrier tape
Quantity
2500pcs
9
Direction
of feed
0.3MIN
4.4±0.2
6.2±0.3
16 15 14 13 12 11 10
1
2
3
4
5
6
7
E2
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
)
8
0.11
1.5±0.1
0.15 ± 0.1
0.8
0.1
0.36 ± 0.1
1pin
Reel
(Unit : mm)
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© 2011 ROHM Co., Ltd. All rights reserved.
16/17
Direction of feed
∗ Order quantity needs to be multiple of the minimum quantity.
2011.05 - Rev.B
BA6956AN,BA6287F,BA6285FS,BA6285AFP-Y,BA6920FP-Y
Technical Note
HSOP25
13.6 ± 0.2
(MAX 13.95 include BURR)
2.75 ± 0.1
0.3Min.
7.8 ± 0.3
1
13
2000pcs
Direction
of feed
E2
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
)
0.25 ± 0.1
1.95 ± 0.1
S
0.11
1.9 ± 0.1
Embossed carrier tape
Quantity
14
5.4 ± 0.2
25
Tape
0.1 S
0.8
0.36 ± 0.1
12.0 ± 0.2
1pin
Reel
(Unit : mm)
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© 2011 ROHM Co., Ltd. All rights reserved.
17/17
Direction of feed
∗ Order quantity needs to be multiple of the minimum quantity.
2011.05 - Rev.B
Datasheet
Notice
Precaution on using ROHM Products
1.
Our Products are designed and manufactured for application in ordinary electronic equipments (such as AV equipment,
OA equipment, telecommunication equipment, home electronic appliances, amusement equipment, etc.). If you
(Note 1)
, transport
intend to use our Products in devices requiring extremely high reliability (such as medical equipment
equipment, traffic equipment, aircraft/spacecraft, nuclear power controllers, fuel controllers, car equipment including car
accessories, safety devices, etc.) and whose malfunction or failure may cause loss of human life, bodily injury or
serious damage to property (“Specific Applications”), please consult with the ROHM sales representative in advance.
Unless otherwise agreed in writing by ROHM in advance, ROHM shall not be in any way responsible or liable for any
damages, expenses or losses incurred by you or third parties arising from the use of any ROHM’s Products for Specific
Applications.
(Note1) Medical Equipment Classification of the Specific Applications
JAPAN
USA
EU
CHINA
CLASSⅢ
CLASSⅡb
CLASSⅢ
CLASSⅢ
CLASSⅣ
CLASSⅢ
2.
ROHM designs and manufactures its Products subject to strict quality control system. However, semiconductor
products can fail or malfunction at a certain rate. Please be sure to implement, at your own responsibilities, adequate
safety measures including but not limited to fail-safe design against the physical injury, damage to any property, which
a failure or malfunction of our Products may cause. The following are examples of safety measures:
[a] Installation of protection circuits or other protective devices to improve system safety
[b] Installation of redundant circuits to reduce the impact of single or multiple circuit failure
3.
Our Products are designed and manufactured for use under standard conditions and not under any special or
extraordinary environments or conditions, as exemplified below. Accordingly, ROHM shall not be in any way
responsible or liable for any damages, expenses or losses arising from the use of any ROHM’s Products under any
special or extraordinary environments or conditions. If you intend to use our Products under any special or
extraordinary environments or conditions (as exemplified below), your independent verification and confirmation of
product performance, reliability, etc, prior to use, must be necessary:
[a] Use of our Products in any types of liquid, including water, oils, chemicals, and organic solvents
[b] Use of our Products outdoors or in places where the Products are exposed to direct sunlight or dust
[c] Use of our Products in places where the Products are exposed to sea wind or corrosive gases, including Cl2,
H2S, NH3, SO2, and NO2
[d] Use of our Products in places where the Products are exposed to static electricity or electromagnetic waves
[e] Use of our Products in proximity to heat-producing components, plastic cords, or other flammable items
[f] Sealing or coating our Products with resin or other coating materials
[g] Use of our Products without cleaning residue of flux (even if you use no-clean type fluxes, cleaning residue of
flux is recommended); or Washing our Products by using water or water-soluble cleaning agents for cleaning
residue after soldering
[h] Use of the Products in places subject to dew condensation
4.
The Products are not subject to radiation-proof design.
5.
Please verify and confirm characteristics of the final or mounted products in using the Products.
6.
In particular, if a transient load (a large amount of load applied in a short period of time, such as pulse. is applied,
confirmation of performance characteristics after on-board mounting is strongly recommended. Avoid applying power
exceeding normal rated power; exceeding the power rating under steady-state loading condition may negatively affect
product performance and reliability.
7.
De-rate Power Dissipation (Pd) depending on Ambient temperature (Ta). When used in sealed area, confirm the actual
ambient temperature.
8.
Confirm that operation temperature is within the specified range described in the product specification.
9.
ROHM shall not be in any way responsible or liable for failure induced under deviant condition from what is defined in
this document.
Precaution for Mounting / Circuit board design
1.
When a highly active halogenous (chlorine, bromine, etc.) flux is used, the residue of flux may negatively affect product
performance and reliability.
2.
In principle, the reflow soldering method must be used; if flow soldering method is preferred, please consult with the
ROHM representative in advance.
For details, please refer to ROHM Mounting specification
Notice - GE
© 2014 ROHM Co., Ltd. All rights reserved.
Rev.002
Datasheet
Precautions Regarding Application Examples and External Circuits
1.
If change is made to the constant of an external circuit, please allow a sufficient margin considering variations of the
characteristics of the Products and external components, including transient characteristics, as well as static
characteristics.
2.
You agree that application notes, reference designs, and associated data and information contained in this document
are presented only as guidance for Products use. Therefore, in case you use such information, you are solely
responsible for it and you must exercise your own independent verification and judgment in the use of such information
contained in this document. ROHM shall not be in any way responsible or liable for any damages, expenses or losses
incurred by you or third parties arising from the use of such information.
Precaution for Electrostatic
This Product is electrostatic sensitive product, which may be damaged due to electrostatic discharge. Please take proper
caution in your manufacturing process and storage so that voltage exceeding the Products maximum rating will not be
applied to Products. Please take special care under dry condition (e.g. Grounding of human body / equipment / solder iron,
isolation from charged objects, setting of Ionizer, friction prevention and temperature / humidity control).
Precaution for Storage / Transportation
1.
Product performance and soldered connections may deteriorate if the Products are stored in the places where:
[a] the Products are exposed to sea winds or corrosive gases, including Cl2, H2S, NH3, SO2, and NO2
[b] the temperature or humidity exceeds those recommended by ROHM
[c] the Products are exposed to direct sunshine or condensation
[d] the Products are exposed to high Electrostatic
2.
Even under ROHM recommended storage condition, solderability of products out of recommended storage time period
may be degraded. It is strongly recommended to confirm solderability before using Products of which storage time is
exceeding the recommended storage time period.
3.
Store / transport cartons in the correct direction, which is indicated on a carton with a symbol. Otherwise bent leads
may occur due to excessive stress applied when dropping of a carton.
4.
Use Products within the specified time after opening a humidity barrier bag. Baking is required before using Products of
which storage time is exceeding the recommended storage time period.
Precaution for Product Label
QR code printed on ROHM Products label is for ROHM’s internal use only.
Precaution for Disposition
When disposing Products please dispose them properly using an authorized industry waste company.
Precaution for Foreign Exchange and Foreign Trade act
Since our Products might fall under controlled goods prescribed by the applicable foreign exchange and foreign trade act,
please consult with ROHM representative in case of export.
Precaution Regarding Intellectual Property Rights
1.
All information and data including but not limited to application example contained in this document is for reference
only. ROHM does not warrant that foregoing information or data will not infringe any intellectual property rights or any
other rights of any third party regarding such information or data. ROHM shall not be in any way responsible or liable
for infringement of any intellectual property rights or other damages arising from use of such information or data.:
2.
No license, expressly or implied, is granted hereby under any intellectual property rights or other rights of ROHM or any
third parties with respect to the information contained in this document.
Other Precaution
1.
This document may not be reprinted or reproduced, in whole or in part, without prior written consent of ROHM.
2.
The Products may not be disassembled, converted, modified, reproduced or otherwise changed without prior written
consent of ROHM.
3.
In no event shall you use in any way whatsoever the Products and the related technical information contained in the
Products or this document for any military purposes, including but not limited to, the development of mass-destruction
weapons.
4.
The proper names of companies or products described in this document are trademarks or registered trademarks of
ROHM, its affiliated companies or third parties.
Notice - GE
© 2014 ROHM Co., Ltd. All rights reserved.
Rev.002
Datasheet
General Precaution
1. Before you use our Pro ducts, you are requested to care fully read this document and fully understand its contents.
ROHM shall n ot be in an y way responsible or liabl e for fa ilure, malfunction or acci dent arising from the use of a ny
ROHM’s Products against warning, caution or note contained in this document.
2. All information contained in this docume nt is current as of the issuing date and subj ect to change without any prior
notice. Before purchasing or using ROHM’s Products, please confirm the la test information with a ROHM sale s
representative.
3.
The information contained in this doc ument is provi ded on an “as is” basis and ROHM does not warrant that all
information contained in this document is accurate an d/or error-free. ROHM shall not be in an y way responsible or
liable for an y damages, expenses or losses incurred b y you or third parties resulting from inaccur acy or errors of or
concerning such information.
Notice – WE
© 2014 ROHM Co., Ltd. All rights reserved.
Rev.001
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