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BA6956AN
Technical data
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ROHM BA6956AN Technical data

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Reversible Motor Drivers for Brush Motors
1.0A Reversible Motor Drivers (Single Motor)
●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)
Parameter Symbol
Supply voltage VCC 18 18 18 30 36 V Supply voltage VM 18 18 18 30 36 V Output current I
OMAX
BA6956AN BA6287F BA6285FS BA6285AFP-Y BA6920FP-Y
1*1 1*1 1*1 1*1 1*1 A
Ratings
No.11008EBT02
Unit
Operating temperature T Storage temperature T Power dissipation Pd 1.19*2 0.689*3 0.813*4 1.45*5 1.45*5 W Junction temperature T
*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
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
-20 ~ 75 -20 ~ 75 -20 ~ 75 -40 ~ 85 -30 ~ 85 ℃
OPR
-55 ~ 150 -55 ~ 150 -55 ~ 150 -55 ~ 150 -55 ~ 150 ℃
STG
150 150 150 150 150 ℃
jmax
Ratings
BA6956AN BA6287F BA6285FS BA6285AFP-Y BA6920FP-Y
Unit
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1/17
2011.05 - Rev.B
●Electrical characteristics (BA6956AN, unless otherwise specified, Ta=25℃ and VCC=9V, VM=9V)
Parameter Symbol
Min. Typ. Max.
Limits
Unit Conditions
Technical Note
Supply current 1 I Supply current 2 I Supply current 3 I
- 29 44 mA FWD/REV mode
CC1
- 56 80 mA Brake mode
CC2
- 0 15 µA Standby mode
CC3
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 I
- 10 25 µA IO=0.2A, VREF=6V
REF
●Electrical characteristics (BA6287F, unless otherwise specified, Ta=25℃ and VCC=9V, VM=9V, VREF=9V)
Parameter Symbol
Supply current 1 I Supply current 2 I
Min. Typ. Max.
12 24 36 mA FWD/REV mode
CC1
29 48 67 mA Brake mode
CC2
Limits
Unit Conditions
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 I
6 12 18 mA IO=0.2A, FWD or REV mode
REF
●Electrical characteristics (BA6285FS, unless otherwise specified, Ta= 25℃ and VCC=9V, VM=9V, VREF=9V)
Parameter Symbol
Supply current 1 I Supply current 2 I
Min. Typ. Max.
12 24 36 mA FWD/REV mode
CC1
29 48 67 mA Brake mode
CC2
Limits
Unit Conditions
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 V Power save off voltage V
2.0 - VCC V Standby mode
PSON
0 - 0.8 V Operation
PSOFF
Output saturation voltage VCE - 1.0 1.5 V IO=0.2A, vertically total VREF bias current I
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6 12 18 mA IO=0.2A, FWD or REV mode
REF
2/17
2011.05 - Rev.B
Technical Note
●Electrical characteristics (BA6285AFP-Y, unless otherwise specified, Ta=25℃ and VCC=9V, VM=9V, VREF=9V)
Parameter Symbol
Min. Typ. Max.
Limits
Unit Conditions
Supply current 1 I Supply current 2 I
10 20 30 mA FWD/REV mode
CC1
21 42 63 mA Brake mode
CC2
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 V Power save off voltage V
- - 0.8 V Operation
PSON
2.0 - VCC V Standby mode
PSOFF
Output saturation voltage VCE - 1.0 1.5 V IO=0.2A, vertically total VREF bias current I
9 15 21 mA IO=0.2A, FWD or REV mode
REF
●Electrical characteristics (BA6920FP-Y, unless otherwise specified, Ta=25℃ and VCC=12V, VM=12V)
Parameter Symbol
Supply current 1 I Supply current 2 I
Min. Typ. Max.
5 8 12 mA FWD/REV mode
CC1
3 5 8 mA Brake mode
CC2
Limits
Unit Conditions
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 V Power save off voltage V
2.0 - VCC V Standby mode
PSON
- - 0.8 V Operation
PSOFF
Output saturation voltage VCE - 2.2 3.3 V IO=0.2A, vertically total VREF bias current I
- 12 35 µA IO=0.1A, VREF=6V
REF
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3/17
2011.05 - Rev.B
Technical Note
●Electrical characteristic curves (Reference data)
40
80
30
35
70
25
30
60
20
25
Supply Current: Icc1 [mA] _
20
6 9 12 15
Supply Voltage: Vcc [V]
Fig.1 Supply current 1 (forward) Fig.2 Supply current 2 (brake) Fig.3 Supply current 1 (forward) (BA6956AN) (BA6956AN) (BA6287F)
60
-20°C 25°C 75°C
50
Circuit Current: Icc2 [mA] _
40
6 9 12 15
Supply Voltage: Vcc [V]
40
55
35
-20°C 25°C 75°C
-20°C 25°C 75°C
15
Circuit Current: Icc1 [mA] _
10
4 8 12 16
Supply Voltage: Vcc [V]
60
55
-20°C 25°C 75°C
50
45
Supply Current: Icc2 [mA] _
40
4 8 12 16
Supply Voltage: Vcc [V]
Fig.4 Supply current 2 (brake) Fig.5 Supply current 1 (forward) Fig.6 Supply current 2 (brake) (BA6287F) (BA6285FS) (BA6285FS)
35
30
25
-20°C 25°C 75°C
-40°C 25°C 85°C
20
Circuit Current: Icc1 [mA] _
30
25
Circuit Current: Icc1 [mA] _
20
6 9 12 15
Supply Voltage: Vcc [V]
70
60
50
40
Circuit Current: Icc2 [mA] _
30
-40°C 25°C 85°C
50
45
Supply Current: Icc2 [mA] _
40
6 9 12 15
Supply Voltage: Vcc [V]
8
6
4
Circuit Current: Icc1 [mA] _
-25°C 25°C 75°C
-30°C 25°C 85°C
15
4 8 12 16 20 24
Supply Voltage: Vcc [V]
Fig.7 Supply current 1 (forward) Fig.8 Supply current 2 (brake) Fig.9 Supply current 1 (forward) (BA6285AFP-Y) (BA6285AFP-Y) (BA6920FP-Y)
20
4 8 12 16 20 24
Supply Voltage: Vcc [V]
2
6 1218243036
Supply Voltage: Vcc [V]
12
10
8
8.5 75°C
25°C
-20°C
8.0
9.0 75°C
25°C
-20°C
8.5
6
Circuit Current: Icc2 [mA] _
4
6 1218243036
Supply Voltage: Vcc [V]
Fig.10 Supply current 2 (brake) Fig.11 Output high voltage Fig.12 Output high voltage (BA6920FP-Y) (BA6956AN) (BA6287F)
-30°C 25°C 85°C
7.5
Output High Voltage: VOH [V] _
7.0 0 0.2 0.4 0.6 0.8 1
Output Current: Iout [A]
8.0
Output High Voltage: VOH [V] _
7.5 0 0.2 0.4 0.6 0.8 1
Output Current: Iout [A]
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4/17
2011.05 - Rev.B
Technical Note
●Electrical characteristic curves (Reference data) - Continued
9.0
8.5
75°C 25°C
-20°C
8.0
Output High Voltage: VOH [V] _
7.5 0 0.2 0.4 0.6 0.8 1
Output Current: Iout [A]
Fig.13 Output high voltage Fig.14 Output high voltage Fig.15 Output high voltage (BA6285FS) (BA6285AFP-Y) (BA6920FP-Y)
1.0
75°C
0.8
25°C
-20°C
9.0
8.5
8.0
Output High Voltage: VOH [V] _
7.5 0 0.2 0.4 0.6 0.8 1
Output Current: Iout [A]
1.0
0.8
85°C 25°C
-40°C
9.0
8.5
8.0
7.5
Output High Voltage: VOH [V] _
7.0 0 0.2 0.4 0.6 0.8 1
Output Current: Iout [A]
1.0
0.8
85°C 25°C
-30°C
0.6
0.4
0.2
Output Low Voltage: VOL [V] _
0.0 0 0.2 0.4 0.6 0.8 1
Output Current: Iout [A]
Fig.16 Output low voltage Fig.17 Output low voltage Fig.18 Output low voltage (BA6956AN) (BA6287F) (BA6285FS)
1.0
85°C
0.8
0.6
0.4
25°C
-40°C
0.2
Output Low Voltage: VOL [V] _
0.0 0 0.2 0.4 0.6 0.8 1
Output Current: Iout [A]
Fig.19 Output low voltage Fig.20 Output low voltage Fig.21 Thermal derating curve (BA6285AFP-Y) (BA6920FP-Y) (SIP9)
0.6
0.4
0.2
Output Low Voltage: VOL [V] _
0.0 0 0.2 0.4 0.6 0.8 1
Output Current: Iout [A]
1.5
1.2
0.9
0.6
0.3
Output Low Voltage: VOL [V] _
0.0 0 0.2 0.4 0.6 0.8 1
Output Current: Iout [A]
75°C 25°C
-20°C
85°C 25°C
-30°C
0.6
0.4
0.2
Output Low Voltage: VOL [V] _
0.0 0 0.2 0.4 0.6 0.8 1
Output Current: Iout [A]
1.5
i) 1.19W
1.0
Pd [W]
0.5
0.0 0 25 50 75 100 125 150
AMBIENT TEMPERATURE [°C]
i) Package only
75°C 25°C
-20°C
1.5
Pd [W]
ii) Mounted on ROHM standard PCB
(70mm x 70m m x 1.6mm FR4 gl ass-epoxy board)
i) Package only
1.0
ii) 0.689W
0.5
i) 0.563W
1.5
ii) Mounted on ROHM standard PCB
(70mm x 70mm x 1.6mm FR4 glass-epoxy board)
i) Package only
1.0
ii) 0.813W
Pd [W]
0.5
i) 0.625W
3
ii) Mounted on ROHM standard PCB
(70mm x 70m m x 1. 6m m FR4 gl ass-epoxy board)
i) Package only
2
Pd [W]
1
ii)1.45W
i)0.85W
0.0 0 25 50 75 100 125 150
AMBIENT TEMPERATURE [°C]
Fig.22 Thermal derating curve Fig.23 Thermal derating curve Fig.24 Thermal derating curve (SOP8) (SSOP-A16) (HSOP25)
0.0 0 25 50 75 100 125 150
AMBIENT TEMPERATURE [°C]
0
0 25 50 75 100 125 150
AMBIENT TEMPERATURE [°C]
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© 2011 ROHM Co., Ltd. All rights reserved.
5/17
2011.05 - Rev.B
●Block diagram and pin configuration BA6956AN
TSD
VCC
FIN
RIN
VREF
7
9
1
CTRL
R2
R3
8
GND
4
OUT1
C2
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 Power supply (small signal) 7 FIN Control input (forward) 8 GND GND 9 RIN Control input (reverse)
Technical Note
VM
R1
5
VCC
6
C1
RNF
3
2
OUT2
M
C3
VM
FIN
RNF
VREF
OUT2
OUT1
RIN
VCC
GND
Fig.26 BA6956AN (SIP9)
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6/17
2011.05 - Rev.B
●Block diagram and pin configuration BA6287F
R1
C1
VM
VCC
FIN
RIN
2
3
TSD
4
5
CTRL
1
OUT1
C2
M
Fig.27 BA6287F
Table 2 BA6287F
Pin Name Function
1 OUT1 Driver output 2 VM 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
VCC
VREF
6
GND
8
7
OUT2
C3
OUT1
VM
VCC
FIN
Fig.28 BA6287F (SOP8)
Technical Note
R2
ZD
GND OUT2 VREF RIN
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7/17
2011.05 - Rev.B
●Block diagram and pin configuration
BA6285FS
R1
C1
VM
VCC
FIN
RIN
SAVE
POWER
11
4
5
6
8
TSD
CTRL
1
GND
3
OUT1 OUT2
M
C2
Fig.29 BA6285FS
Table 3 BA6285FS
Pin Name Function
1 GND GND 2 NC NC 3 OUT1 Driver output 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 Reference voltage setting pin 13 NC NC 14 OUT2 Driver output 15 NC NC 16 RNF Power ground
Technical Note
VCC
R2
VREF
12
RNF
16
14
C3
GND
NC
OUT1
VM
VCC
FIN NC
PS
Fig.30 BA6285FS (SSOP-A16)
ZD
RNF NC OUT2 NC VREF RIN NC NC
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8/17
2011.05 - Rev.B
●Block diagram and pin configuration BA6285AFP-Y
R1
C1
VM
VCC
FIN
RIN
POWER
SAVE
16
17
18
20
19
TSD
CTRL
7
FIN
8
GND GND
9
OUT1 OUT2
M
C2
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 Refere nce voltage setting pin 22 NC NC 23 NC NC 24 NC NC 25 NC NC
FIN GND GND
Technical Note
VCC
R2
VREF
21
RNF
6
5
C3
NC NC NC NC
OUT2
RNF GND GND
GND
OUT1
NC NC NC NC
Fig.32 BA6285AFP-Y (HSOP25)
ZD
NC NC NC NC VREF RIN
GND PS
FIN VCC VM NC NC
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9/17
2011.05 - Rev.B
●Block diagram and pin configuration BA6920FP-Y
TSD
FIN
RIN
POWER
SAVE
18
20
19
CTRL
8
FIN
GND
9
OUT1
C2
5
M
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
Technical Note
NC NC NC NC
NC
NC NC NC NC
R2
R3
R1
C1
NC NC NC NC VREF RIN
GND PS
FIN VCC VM NC NC
VM
16
VCC
17
VREF
21
RNF
6
OUT2
C3
OUT2
RNF GND
GND
OUT1
Fig.34 BA6920FP-Y (HSOP25)
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10/17
2011.05 - Rev.B
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 o n 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 ( V lower than the VREF pin voltage for BA6287F, BA6285FS and BA6285AFP-Y. (Reference values; V
SAT
≈ 0.25V, VF ≈
SAT
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 mountin g 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 d irection after the motor is temporarily brought to the BRAKE condition or OPEN condition. It is recommended to keep the relevant conditi ons 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.
+ VF )
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11/17
2011.05 - Rev.B
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
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 V
and VOL are expressed by:
OH
VOH = VREF - ( V V
OL
= V
SAT(Q3)
(Reference values; V
+ V
SAT(Q1)
F(Q2)
≈ 0.15V, VF ≈ 0.7V)
SAT
)
In addition, the relation of VREF voltage to output voltage is expressed by:
( V
SAT(Q1)
+ V
) < VREF < VM - V
F(Q2)
SAT(Q2)
+ V
F(Q2)
+ V
SAT(Q1)
Therefore, when the VREF voltage condition is as follows, the output high voltage is restricted.
VREF > VM - V
= VM - V
V
OH
SAT(Q2)
SAT(Q2)
+ V
SAT(Q1)
+ V
F(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:
V
= VREF + ( V
OH
≈ VREF
V
OH
V
= V
OL
SAT(Q6)
= V
V
OL
SAT(Q7)
(Reference values; V
(BA6956AN) + V
+ V
F(Q5)
F(Q6)
F(Q4)
(BA6920FP-Y)
≈ 0.15V, VF ≈ 0.7V)
SAT
) - ( V
F(Q2)
+ V
F(Q3)
)
VREF
Fig.36 BA6956AN Fig.37 BA6920FP-Y
The output high voltage controllable range is expressed by:
VREF < VCC - V VREF < VM - ( V VREF < VM - V
SAT(Q1) SAT(Q2)
SAT(Q3)
- V + V
+ ( V
F(Q4)
F(Q3) F(Q2)
- V
F(Q5)
) + ( V + V
F(Q3)
F(Q2)
) - ( V
+ V
F(Q3)
F(Q4)
) - ( V
+ V
+ V
F(Q4)
F(Q5)
F(Q5)
) (BA6920FP-Y)
When the VREF voltage condition is as follows, the output high voltage is restricted.
- V
- V
VREF > VCC - V VREF > VM - ( V VREF > VM - V
SAT(Q1) SAT(Q2)
SAT(Q3)
+ V
+ ( V
F(Q4)
F(Q3) F(Q2)
F(Q5)
) + ( V + V
F(Q3)
F(Q2)
) - ( V
+ V
F(Q3)
F(Q4)
) - ( V
+ V
+ V
F(Q4)
F(Q5)
F(Q5)
) (BA6920FP-Y)
VOH = VCC - V V
= VM - V
OH
= VM - V
V
OH
- V
SAT(Q1)
- V
SAT(Q2)
(BA6920FP-Y)
SAT(Q3)
- V
F(Q2)
(BA6956AN)
F(Q3)
F(Q3)
Technical Note
VM
VREF
Q1
Q2
OUT
Q3
RNF
(GND, BA6287F)
Fig.35 BA6287F, BD6285FS, BA6285AFP-Y
VM VCC
Q3
OUT
Q6
RNF
Q1
Q2
Q4
Q5
Q3
Q6
) (BA6956AN)
) (BA6956AN)
VM VCC
OUT
RNF
VREF
Q1
Q4
Q5
Q2
Q7
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12/17
2011.05 - Rev.B
●Interfaces
FIN
RIN
POWER
SAVE
(BA6285FS, BA6285AFP-Y, BA6920FP-Y)
Fig. 38 FIN, RIN Fig.39 POWER SAVE
VM VCC
VM VREF
VREF
OUT1 OUT2
OUT1 OUT2
VREF
RNF
RNF
(GND, BA6287F)
(BA6956AN) (BA6287F, BA6285FS, BA6285AFP-Y) (BA6920FP-Y)
Fig. 40 VCC, VM, OUT1, OUT2, VREF, RNF, GND
Technical Note
VM VCC
OUT1 OUT2
RNF
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2011.05 - Rev.B
●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 e xample, a short circuit or an o pen circuit, it is important to consider circuit protection measures – such as adding fuses – 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 direction diode.
3) Power supply lines Return current generated by the motor’s Back-EMF require s countermeasures, such as providing a return curr ent 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 peripher al circuits exceeding the absolute maximum ratin g. To help protect against damage or degradation, physical safety measures should b e taken, such as providing a voltage clamping diode across the power supply and GND.
4) Electrica l p otential 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 groundi ng (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 d issipation (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. T he 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, 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 between output and GND.
11) Testing on application boards When testing the IC on an application board, connecting a capacitor to a l ow 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.
Technical Note
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14/17
2011.05 - Rev.B
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. T herefor e, do not use methods b y which parasitic diodes operate, such as applying a voltage lower than the GND (P substrate) voltage to an input pin.
Pin A
Parasitic element
N
+
P
P
P
P substrate
GND
+
Transistor (NPN)
Resistor
Pin B
B
C
Pin A
N
N N
Parasitic element
+
P
Parasitic element
N
Appendix: Example of monolithic IC structure
E
P
P substrate
GND
Technical Note
Pin B
B C
+
P
N
GND
Other adjacent elements
E
GND
Parasitic element
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15/17
2011.05 - Rev.B
●Ordering part number
Technical Note
B A
Part No. Part No.
SIP9
SOP8
SSOP-A16
5.8±0.2
10.5±0.5
3.5±0.5
6.2±0.3
1.5±0.1
6.2± 0.3
4.4± 0.2
1.5± 0.1
0.11
1.2
1 9
(MAX 5.35 include BURR)
4.4±0.2
0.595
0.11
(MAX 6.95 include BURR)
15
2
0.8
6 2 8 5 A
6956A 6287 6285 6285A 6920
2.8±0.2
0.6
0.3±0.1
0.8
1.3
+
6
°
4
°
−4°
0.3MIN
0.9±0.15
+0.1
0.17
-
0.05
(Unit : mm)
0.3MIN
0.15± 0.1
(Unit : mm)
2.54
5.0±0.2
7
1.27
6.6± 0.2
1216 14
13
453
21.8±0.2
6
438251
0.42±0.1
11
61
0.1
S
0.1 S
9
10
87
0.36± 0.1
F P - Y E 2
Package N : SIP9 F : SOP8 FS : SSOP-A16 FP-Y : HSOP25
<Tape and Reel information>
TubeContainer Quantity Direction of feed
<Tape and Reel information>
Quantity
Direction of feed
<Tape and Reel information>
Quantity
Direction of feed
1000pcs
Direction of products is fixed in a container tube
Embossed carrier tapeTape 2500pcs
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
Reel
Embossed carrier tapeTape 2500pcs
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
Reel
Packaging and forming specification E2: Embossed tape and reel None: Tube
Order quantity needs to be multiple of the minimum quantity.
∗
1pin
Order quantity needs to be multiple of the minimum quantity.
∗
1pin
Order quantity needs to be multiple of the minimum quantity.
∗
Direction of feed
Direction of feed
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2011.05 - Rev.B
HSOP25
7.8 ± 0.3
1.9 ± 0.1
13.6 ± 0.2
(MAX 13.95 include BURR)
2.75 ± 0.1
25 14
5.4 ± 0.2
1
1.95 ± 0.1
0.8
0.11
12.0 ± 0.2
0.36 ± 0.1
13
0.3Min.
0.25 ± 0.1
S
0.1 S
(Unit : mm)
<Tape and Reel information>
Embossed carrier tapeTape
Quantity
Direction of feed
2000pcs 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
Reel
1pin
∗
Technical Note
Direction of feed
Order quantity needs to be multiple of the minimum quantity.
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17/17
2011.05 - Rev.B
Notes
No copying or reproduction of this document, in part or in whole, is permitted without the consent of ROHM Co.,Ltd.
The content specied herein is subject to change for improvement without notice.
The content specied 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 specications, 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 specied 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 specied 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 specied in this document are intended to be used with general-use electronic equipment or devices (such as audio visual equipment, ofce-automation equipment, commu­nication devices, electronic appliances and amusement devices).
The Products specied 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, re or any other damage caused in the event of the failure of any Product, such as derating, redundancy, re 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 injur y (such as a medical instrument, transportation equipment, aerospace machinery, nuclear-reactor controller, fuel­controller 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.
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Notice
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