1/17
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Reversible Motor Drivers for Brush Motors
1.0A Reversible
Motor Drivers (Single Motor)
BA6956AN,BA6287F,BA6285FS,BA6285AFP-Y,BA6920FP-Y
●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 sett ing pin
4) Built-in thermal shutdown circuit (TSD)
●Applications
Audio-visual equipment; PC perip herals; Car audios; Car navigation systems; OA equipments
●Absolute maximum ratings (Ta=25℃, All voltages are with respect to ground)
Parameter Symbol Ratings Unit
BA6956AN BA6287F BA6285FS BA6285AFP-Y BA6920FP-Y
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 ℃
Power dissipation Pd 1.19*2 0.689*3 0.813*4 1.45*5 1.45*5 W
Junction temperature Tjmax 150 150 150 150 150 ℃
*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℃)
Parameter Symbol Ratings Unit
BA6956AN BA6287F BA6285FS BA6285AFP-Y BA6920FP-Y
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
No.11008EBT02
Technical Note
2/17
BA6956AN,BA6287F,BA6285FS,BA6285AFP-Y,BA6920FP-Y
www.rohm.com 2011.05 - Rev.B
© 2011 ROHM Co., Ltd. All rights reserved.
●Electrical cha r acteristics (BA6956AN, unl ess otherwise specified, Ta=25℃ and VCC=9V, VM=9V)
Parameter Symbol Limits 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 cha r acteristics (BA6287F, unless otherwise specified, Ta=25℃ and VCC=9V, VM=9V, VREF=9V)
Parameter Symbol Limits 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 cha r acteristics (BA6285FS, unless otherwise specified, Ta=25℃ and VCC=9V, VM= 9V, VREF=9V)
Parameter Symbol Limits 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 IO=0.2A, FWD or REV mode
Technical Note
3/17
BA6956AN,BA6287F,BA6285FS,BA6285AFP-Y,BA6920FP-Y
www.rohm.com 2011.05 - Rev.B
© 2011 ROHM Co., Ltd. All rights reserved.
●Electrical cha r acteristics (BA6285AFP -Y, unless otherwise specified, Ta=25℃ and VCC=9V, VM=9V, VREF=9V)
Parameter Symbol Limits 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 cha r acteristics (BA6920FP-Y, unless other wise specified, Ta=25℃ and VCC= 12V, VM=12V)
Parameter Symbol Limits 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
Technical Note
4/17
BA6956AN,BA6287F,BA6285FS,BA6285AFP-Y,BA6920FP-Y
www.rohm.com 2011.05 - Rev.B
© 2011 ROHM Co., Ltd. All rights reserved.
7.0
7.5
8.0
8.5
0 0.2 0.4 0.6 0.8 1
Outp u t Curren t: Io ut [A ]
Output High Voltage: VOH [V] _
75°C
25°C
-20°C
4
6
8
10
12
6 1218243036
Supply Voltage: Vcc [V]
Circuit Current: Icc2 [mA] _
-30°C
25°C
85°C 7.5
8.0
8.5
9.0
0 0.2 0.4 0.6 0.8 1
Outp u t Curren t: Io ut [A ]
Output High Voltage: VOH [V] _
75°C
25°C
-20°C
15
20
25
30
35
4 8 12 16 20 24
Supply Voltage: Vcc [V]
Circuit Current: Icc1 [mA] _
-40°C
25°C
85°C
20
30
40
50
60
70
4 8 12 16 20 24
Supply Voltage: Vcc [V]
Circuit Current: Icc2 [mA] _
-40°C
25°C
85°C
2
4
6
8
6 1218243036
Supply Voltage: Vcc [V]
Circuit Current: Icc1 [mA] _
-30°C
25°C
85°C
40
45
50
55
60
6 9 12 15
Supply Voltage: Vcc [V]
Supply Current: Icc2 [mA] _
-25°C
25°C
75°C
40
45
50
55
60
4 8 12 16
Supply Voltage: Vcc [V]
Supply Current: Icc2 [mA] _
-20°C
25°C
75°C
20
25
30
35
40
6 9 12 15
Supply Voltage: Vcc [V]
Circuit Current: Icc1 [mA] _
-20°C
25°C
75°C
20
25
30
35
40
6 9 12 15
Supply Voltage: Vcc [V]
Supply Current: Icc1 [mA] _
-20°C
25°C
75°C
10
15
20
25
30
4 8 12 16
Supply Voltage: Vcc [V]
Circuit Current: Icc1 [mA] _
-20°C
25°C
75°C
40
50
60
70
80
6 9 12 15
Supply Voltage: Vcc [V]
Circuit Current: Icc2 [mA] _
-20°C
25°C
75°C
Fig.1 Supply current 1 (forward) Fig.2 Supply current 2 (brake) Fig.3 Supply current 1 (forward)
(BA6956AN) (BA6956AN) (BA6287F)
Fig.4 Supply current 2 (brake) Fig.5 Supply current 1 (forward) Fig.6 Sup pl y current 2 (brake)
(BA6287F) (BA6285FS) (BA6285FS)
Fig.7 Supply current 1 (forward) Fig.8 Supply current 2 (brake) Fig.9 Supply current 1 (forward)
(BA6285AFP-Y) (BA6285AFP-Y) (BA6920FP-Y)
Fig.10 Supply current 2 (brake) Fig.11 Output high voltage Fig.12 Output high voltage
(BA6920FP-Y) (BA6956AN) (BA6287F)
●Electrical c ha racteristic curves (R eference data)
Technical Note
5/17
BA6956AN,BA6287F,BA6285FS,BA6285AFP-Y,BA6920FP-Y
www.rohm.com 2011.05 - Rev.B
© 2011 ROHM Co., Ltd. All rights reserved.
0.0
0.5
1.0
1.5
0 25 50 75 100 125 150
AMBIENT TEMPERATURE [°C]
Pd [W]
i ) 0.563W
i i) 0.689W
i i) Mounted on ROHM standard PCB
(70m m x 70m m x 1. 6mm F R4 gl ass-epoxy board)
i ) Package only
0
1
2
3
0 25 50 75 100 125 150
AMBIENT TEMPERATURE [°C]
Pd [W]
i)0.85W
ii)1.45W
i i) Mounted on ROHM standard PCB
(70m m x 70m m x 1.6mm F R4 gl ass-epoxy board)
i ) Package only
0.0
0.5
1.0
1.5
0 25 50 75 100 125 150
AMBIENT TEMPERATURE [°C]
Pd [W]
i i) 0.813W
i i) Mounted on ROHM standard PCB
(70mm x 70mm x 1.6m m FR4 glass-epoxy board)
i ) Package only
i ) 0.625W
0.0
0.2
0.4
0.6
0.8
1.0
0 0.2 0.4 0.6 0.8 1
Outp u t Curren t: Io ut [A ]
Output Low Voltage: VOL [V] _
85°C
25°C
-40°C
0.0
0.3
0.6
0.9
1.2
1.5
0 0.2 0.4 0.6 0.8 1
Outp u t Curren t: Io ut [A ]
Output Low Voltage: VOL [V] _
85°C
25°C
-30°C
0.0
0.5
1.0
1.5
0 25 50 75 100 125 150
AMBIENT TEMPERATURE [°C]
Pd [W]
i ) 1.19W i) Package only
0.0
0.2
0.4
0.6
0.8
1.0
0 0.2 0.4 0.6 0.8 1
Outp u t Curren t: Io ut [A ]
Output Low Voltage: VOL [V] _
75°C
25°C
-20°C
0.0
0.2
0.4
0.6
0.8
1.0
0 0.2 0.4 0.6 0.8 1
Outp u t Curren t: Io ut [A ]
Output Low Voltage: VOL [V] _
75°C
25°C
-20°C
0.0
0.2
0.4
0.6
0.8
1.0
0 0.2 0.4 0.6 0.8 1
Outp u t Curren t: Io ut [A ]
Output Low Voltage: VOL [V] _
75°C
25°C
-20°C
7.5
8.0
8.5
9.0
0 0.2 0.4 0.6 0.8 1
Outp u t Curren t: Io ut [A ]
Output High Voltage: VOH [V] _
75°C
25°C
-20°C
7.5
8.0
8.5
9.0
0 0.2 0.4 0.6 0.8 1
Outp u t Curren t: Io ut [A ]
Output High Voltage: VOH [V] _
85°C
25°C
-40°C
7.0
7.5
8.0
8.5
9.0
0 0.2 0.4 0.6 0.8 1
Outp u t Curren t: Io ut [A ]
Output High Voltage: VOH [V] _
85°C
25°C
-30°C
Fig.13 Output high voltage Fig.14 Output high voltage Fig.15 Output high voltage
(BA6285FS) (BA6285AFP-Y) (BA6920FP-Y)
Fig.16 Output low voltage Fig.17 Output lo w voltage Fig.18 Output low voltage
(BA6956AN) (BA6287F) (BA6285FS)
Fig.19 Output low voltage Fig.20 Output lo w voltage Fig.21 Thermal derating curve
(BA6285AFP-Y) (BA6920FP-Y) (SIP9)
Fig.22 Thermal derating curve Fig.23 Thermal der ating curve Fig.24 Thermal derating curve
(SOP8) (SSOP-A16) (HSOP25)
●Electrical characteristic curves (Reference d ata) - Continu ed
Technical Note
6/17
BA6956AN,BA6287F,BA6285FS,BA6285AFP-Y,BA6920FP-Y
www.rohm.com 2011.05 - Rev.B
© 2011 ROHM Co., Ltd. All rights reserved.
●Block diagram and pin configuration
BA6956AN
Fig.25 BA6956AN
Table 1 BA6956AN
Pin Name Function
1 VREF Reference voltage setting pin
2 OUT2 Driver output
3 RNF Power ground
4 OUT1 Driver output
5 VM Power supply (driver stage)
6 VCC Po wer supply (small signal)
7 F I N Control input (forward)
8 GND GND
9 RIN Control input (reverse)
R3
C2
C1
3
6
5
2
4
7
9
1
CTRL
TSD
FIN
RIN
VREF
VM
VCC
RNF
OUT1
OUT2
8
GND
R2
R1
VCC
M
C3
Fig.26 BA6956AN (SIP9)
VREF
OUT2
RNF
OUT1
VM
VCC
FIN
GND
RIN
Technical Note
7/17
BA6956AN,BA6287F,BA6285FS,BA6285AFP-Y,BA6920FP-Y
www.rohm.com 2011.05 - Rev.B
© 2011 ROHM Co., Ltd. All rights reserved.
●Block diagram and pin configuration
BA6287F
Fig.27 BA6287F
Table 2 BA6287F
Pin Name Function
1 OUT1 Driver output
2 VM Power suppl y (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
ZD
C2
C1
VM
VCC
OUT1
OUT2
R2
R1
M
C3
3
2
7
1
4
5
CTRL
TSD
FIN
RIN
6
VREF
8
GND
VCC
Fig.28 BA6287F (SOP8)
OUT1
VM
VCC
FIN
GND
OUT2
VREF
RIN
Technical Note
8/17
BA6956AN,BA6287F,BA6285FS,BA6285AFP-Y,BA6920FP-Y
www.rohm.com 2011.05 - Rev.B
© 2011 ROHM Co., Ltd. All rights reserved.
●Block diagram and pin configuration
BA6285FS
Fig.29 BA6285FS
Table 3 BA6285FS
Pin Name Function
1 GND GND
2 NC NC
3 OUT1 Driver output
4 VM Power suppl y (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 Reference voltage setting pin
13 NC NC
14 OUT2 Driver output
15 NC NC
16 RNF Power ground
ZD
C2
C1
R2
R1
M
C3
VCC
5
4
14
3
6
11
CTRL
TSD
FIN
RIN
VM
VCC
OUT1 OUT2
12
VREF
16
RNF
8
POWER
SAVE
1
GND
Fig.30 BA6285FS (SSOP-A16)
GND
NC
OUT1
VM
VCC
FIN
NC
PS
RNF
NC
OUT2
NC
VREF
RIN
NC
NC
Technical Note
9/17
BA6956AN,BA6287F,BA6285FS,BA6285AFP-Y,BA6920FP-Y
www.rohm.com 2011.05 - Rev.B
© 2011 ROHM Co., Ltd. All rights reserved.
●Block diagram and pin configuration
BA6285AFP-Y
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 Reference voltage setting pin
22 NC NC
23 NC NC
24 NC NC
25 NC NC
FIN GND GND
ZD
C2
C1
R2
R1
M
C3
VCC
17
16
5
9
18
20
CTRL
TSD
FIN
RIN
VM
VCC
OUT1 OUT2
21
VREF
6
RNF
19
POWER
SAVE
7
8
FIN
GND GND
Fig.32 BA6285AFP-Y (HSOP25)
NC
NC
GND
NC
NC
OUT2
RNF
GND
GND
OUT1
NC
NC
NC
NC
NC
NC
GND
NC
NC
VREF
RIN
PS
FIN
VCC
VM
NC
NC
Technical Note
10/17
BA6956AN,BA6287F,BA6285FS,BA6285AFP-Y,BA6920FP-Y
www.rohm.com 2011.05 - Rev.B
© 2011 ROHM Co., Ltd. All rights reserved.
●Block diagram and pin configuration
BA6920FP-Y
Fig.33 BA6920FP-Y
Table 5 BA6920FP-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 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 Control input (reverse)
21 VREF Reference voltage setting pin
22 NC NC
23 NC NC
24 NC NC
25 NC NC
FIN GND GND
C2
C1
R1
M
C3
17
16
9
18
20
CTRL
TSD
FIN
RIN
VM
VCC
OUT1
6
RNF
19
POWER
SAVE
8
FIN
GND
5
OUT2
21
VREF
R2
R3
Fig.34 BA6920FP-Y (HSOP25)
NC
NC
GND
NC
NC
OUT2
RNF
NC
GND
OUT1
NC
NC
NC
NC
NC
NC
GND
NC
NC
VREF
RIN
PS
FIN
VCC
VM
NC
NC
Technical Note
11/17
BA6956AN,BA6287F,BA6285FS,BA6285AFP-Y,BA6920FP-Y
www.rohm.com 2011.05 - Rev.B
© 2011 ROHM Co., Ltd. All rights reserved.
●External appl icatio n comp one nts
1) Resistor for the current limitation, R1
This is a current limiting resist or for collector loss reduction and at the time of short-circuited o utput. 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 descri ptions
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. Wh en the motor is connected between the OUT1 and OUT2 pins, the current flo ws 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 releva nt 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.
Technical Note
12/17
BA6956AN,BA6287F,BA6285FS,BA6285AFP-Y,BA6920FP-Y
www.rohm.com 2011.05 - Rev.B
© 2011 ROHM Co., Ltd. All rights reserved.
2) Output high voltage setting
This function optionally sets output voltage by the output hi gh voltage setting pin and cont rols the motor rotating speed.
However, when the output high voltage is set to a low leve l, consumptio n 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
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:
VOH = VREF - ( VSAT(Q1) + VF(Q2) )
VOL = VSAT(Q3)
(Reference values; VSAT ≈ 0.15V, VF ≈ 0.7V)
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)
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
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:
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 < 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)
VREF
VM
OUT
RNF
(G ND, BA6287F)
Q1
Q2
Q3
Fig.35 BA6287F, BD6285FS, BA6285AFP-Y
VM
VCC
OUT
RNF
VREF
Q1
Q2
Q3
Q4
Q5
Q6
Q7
VM
VCC
OUT
RNF
VREF
Q1
Q2
Q3
Q4
Q5
Q6
Fig.36 BA6956AN Fig.37 BA6920FP-Y
Technical Note
13/17
BA6956AN,BA6287F,BA6285FS,BA6285AFP-Y,BA6920FP-Y
www.rohm.com 2011.05 - Rev.B
© 2011 ROHM Co., Ltd. All rights reserved.
●Interfaces
(BA6285FS, BA6285AFP-Y, BA6920FP-Y)
Fig. 38 FIN, RIN Fig.39 POWER SAVE
(BA6956AN) (BA6287F, BA6285FS, BA6285AFP-Y) (BA6920FP-Y)
Fig. 40 VCC, VM, OUT1, OUT2, VREF, RNF, GND
FIN
RIN
VM
VCC
OUT1
OUT2
RNF
VREF
VREF
VM
OUT1
OUT2
RNF
(G N D, BA6287F)
VM
VCC
OUT1
OUT2
RNF
VREF
POWER
SAVE
Technical Note
14/17
BA6956AN,BA6287F,BA6285FS,BA6285AFP-Y,BA6920FP-Y
www.rohm.com 2011.05 - Rev.B
© 2011 ROHM Co., Ltd. All rights reserved.
●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 c annot be id entified as, for e xample, a short circuit or an o pen circuit, it is important
to consider circuit protection measures – such as adding f uses – if any value in excess of absolute maximum ratings i s
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 directio n diode.
3) Power supply lines
Return current generated b y the motor ’s Back-EMF requires counterm easures, such as provid ing a return current path
by inserting capacitors across the po wer supply and GND (10µF, cer amic 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 probl ems with the product, including peripheral c ircuits exceedin g 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 sup ply 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 res istance 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 compon ent.
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 Safet y 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 therma l 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 t o 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 con nected bet ween the out put and GND, i f VCC and VIN are sh ort-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 bet ween output an d GND.
11) Te s ti ng on ap pli cati on boar ds
When testing the IC on an applicati on board, connecting a capacitor to a lo w 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 pro cess. Ground the IC during assembly steps
as an antistatic measure. Use similar precaution when transporting or storing the IC.
Technical Note
15/17
BA6956AN,BA6287F,BA6285FS,BA6285AFP-Y,BA6920FP-Y
www.rohm.com 2011.05 - Rev.B
© 2011 ROHM Co., Ltd. All rights reserved.
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 bet ween each pote ntial 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 ma lfunctions an d ph ysic al dam age. T herefor e, do not use metho ds by
which parasitic diodes operate, such as applying a voltage lower than the GND (P substrate) voltage to an input pin.
Parasitic
element
Appendix: Example of monolithic IC structure
Resistor Transistor (NPN)
N N N P+ P
+
P
P substrate
GND
Parasitic element
Pin A
N
N P+ P+
P
P substrate
GND
Parasitic element
Pin B C B
E
N
GND
Pin A
Pin B
Other adjacent elements
E
B C
GND Parasitic
element
Technical Note
16/17
BA6956AN,BA6287F,BA6285FS,BA6285AFP-Y,BA6920FP-Y
www.rohm.com 2011.05 - Rev.B
© 2011 ROHM Co., Ltd. All rights reserved.
●Ordering part number
B A
6 2 8 5 A F P - Y E 2
Part No. Part No.
6956A
6287
6285
6285A
6920
Package
N : SIP9
F : SOP8
FS : SSOP-A16
FP-Y : HSOP25
Packaging and forming specific ation
E2: Embossed tape and reel
None: T ube
∗
Order quantity needs to be multiple of the minimum quantity.
<Tape and Reel information>
TubeContainer
Quantity
Direction of feed 1000pcs
Direction of products is fixed in a container tube
SIP9
10.5±0.5
1 9
3.5±0.5
0.3±0.1
2.8±0.2
21.8±0.2
1.2
5.8±0.2
2.54
1.3
0.8
0.6
∗
Order quantity needs to be multiple of the minimum quantity.
<Tape and Reel information>
Embossed carrier tapeTape
Quantity
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
2500pcs
E2
()
Direction of feed
Reel 1pin
(Unit : mm)
SOP8
0.9±0.15
0.3MIN
4
°
+
6
°
−
4
°
0.17 +0.1
-
0.05
0.595
6
43
8
2
5
1
7
5.0±0.2
6.2±0.3
4.4±0.2
(MAX 5.35 include BURR)
1.27
0.11
0.42±0.1
1.5±0.1
S
0.1 S
∗
Order quantity needs to be multiple of the minimum quantity.
<Tape and Reel information>
Embossed carrier tapeTape
Quantity
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
2500pcs
E2
()
Direction of feed
Reel 1pin
(Unit : mm)
SSOP-A16
13
87
0.8
9
0.11
15
453
11
0.3MIN
2
1216 14
61
10
6.6±0.2
0.15±0.1
0.36±0.1
1.5±0.1 6.2±0.3
4.4±0.2
(MAX 6.95 include BURR)
0.1
Technical Note
17/17
BA6956AN,BA6287F,BA6285FS,BA6285AFP-Y,BA6920FP-Y
www.rohm.com 2011.05 - Rev.B
© 2011 ROHM Co., Ltd. All rights reserved.
(Unit : mm)
HSOP25
7.8 ± 0.3
5.4 ± 0.2
2.75 ± 0.1
1.95 ± 0.1
25 14
113
0.11
1.9 ± 0.1
0.36 ± 0.1
12.0 ± 0.2
0.3Min.
0.25 ± 0.1
13.6 ± 0.2
0.8
(MAX 13.95 include BURR)
S
0.1 S
∗
Order quantity needs to be multiple of the minimum quantity.
<Tape and Reel information>
Embossed carrier tapeTape
Quantity
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
2000pcs
E2
()
Direction of feed
Reel 1pin
Datasheet
Datasheet
Notice - GE Rev.002
© 2014 ROHM Co., Ltd. All rights reserved.
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
intend to use our Products in devices requiring extremely high reliability (such as medical equipment (Note 1), transport
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 CLASSⅢ CLASSⅡb 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
Datasheet
Datasheet
Notice - GE Rev.002
© 2014 ROHM Co., Ltd. All rights reserved.
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.
DatasheetDatasheet
Notice – WE Rev.001
© 2014 ROHM Co., Ltd. All rights reserved.
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 by you or third parties resulting from inaccur acy or errors of or
concerning such information.
