BD6712AF-E2 [ROHM]
Brushless DC Motor Controller, 0.04A, PDSO8, ROHS COMPLIANT, SOP-8;
| 型号： | BD6712AF-E2 |
| 厂家： | 
ROHM |
| 描述： | Brushless DC Motor Controller, 0.04A, PDSO8, ROHS COMPLIANT, SOP-8 电动机控制 光电二极管 |
| 文件： | 总29页 (文件大小：535K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
DC Brushless Motor Drivers for Cooling Fans
Two-phase Full-wave
DC Brushless Fan Motor Drivers
No.12010EAT03
BD6701F, BA6406F, BA6506F, BA6901F, BD6712AF
●Description
This is the summary of models for two-phase half-wave fan motor driver. They incorporate lock protection, automatic restart
circuit and FG/AL output. Some of them have variable speed control function, 48V power supply adaptation.
●Feature
1) Power Tr incorporated(BD6701F)
2) Pre-driver(BA6406F、BA6901F、BD6712AF、BA6506F)
3) Variable speed control(BA6901F)
4) Incorporates reverse connection protection diode(BD6701F)
5) Incorporates lock protection and automatic restart circuit
6) Rotation speed pulse signal (FG) output(BD6701F、BA6901F、BD6712AF、BA6506F)
7) Lock alarm signal (AL) output(BD6701F、BA6901F、BD6712AF、BA6406F)
●Applications
For desktop PC, server, general consumer equipment, communication equipment and industrial equipment.
●Lineup
Two-phase half wave
Power Tr incorporated
Pre-driver
BD6701F
24V power supply
BA6406F
BA6506F
BD6712AF
BD6712AF
24V power supply
24V power supply
48V power supply
48V power supply
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2012.03 - Rev.A
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© 2012 ROHM Co., Ltd. All rights reserved.
BD6701F, BA6406F, BA6506F, BA6901F, BD6712AF
Technical Note
●Absolute maximum ratings
◎BD6701FV
Symbol
Vcc
Limit
36
Unit
V
Parameter
Supply voltage
Pd
780＊
mW
Power dissipation
Topr
Tstg
-40～+100
℃
℃
Operating temperature range
Storage temperature range
Output current
-55～+150
Iomax
IAL
800＊＊
mA
mA
V
10
AL signal output current
AL signal output voltage
FG signal output current
FG signal output voltage
Junction temperature
VAL
36
IFG
10
mA
V
VFG
Tjmax
36
150
℃
*
**
Reduce by 6.24 mW/°C over 25°C. (On 70.0 mm x 70.0 mm x 1.6 mm glass epoxy board)
This value is not to exceed Pd.
◎BA6406F
Symbol
Vcc
Limit
Unit
V
Parameter
Supply voltage
30
624＊
-40～+100
-55～+125
70
Power dissipation
Pd
mW
℃
Operating temperature
Storage temperature
Output current
Topr
Tstg
℃
Iomax
IAL
mA
mA
V
AL signal output current
AL signal output voltage
Junction temperature
8
VAL
30
Tjmax
125
℃
*
Reduce by 6.24 mW/°C over 25°C. (On 70.0 mm x 70.0 mm x 1.6 mm glass epoxy board)
◎BA6506F
Symbol
Vcc
Limit
Unit
V
Parameter
Supply voltage
30
624＊
-40～+100
-55～+125
70
Power dissipation
Pd
mW
℃
Operating temperature
Storage temperature
Output current
Topr
Tstg
℃
Iomax
IFG
mA
mA
V
FG signal output current
FG signal output voltage
Junction temperature
8
VFG
Tjmax
30
125
℃
*
Reduce by 6.24 mW/°C over 25°C. (On 70.0 mm x 70.0 mm x 1.6 mm glass epoxy board)
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2012.03 - Rev.A
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© 2012 ROHM Co., Ltd. All rights reserved.
BD6701F, BA6406F, BA6506F, BA6901F, BD6712AF
Technical Note
◎BA6901F
Symbol
Vcc
Limit
36
Unit
V
Parameter
Supply voltage
Power dissipation
Operating temperature
Storage temperature
Output current
Pd
625＊
mW
Topr
Tstg
-40～+100
℃
℃
-55～+150
Iomax
IFG
70
15
mA
mA
V
FG signal output current
FG signal output voltage
AL signal output current
AL signal output voltage
Junction temperature
VFG
IAL
36
15
mA
V
VAL
36
Tjmax
150
℃
*
Reduce by 5.0 mW/°C over 25°C. (On 70.0 mm x 70.0 mm x 1.6 mm glass epoxy board)
◎BAD6712AF
Symbol
Pd
Limit
780＊
-35～+95
-55～+150
40
Unit
mW
℃
Parameter
Supply voltage
Power dissipation
Topr
Operating temperature range
Storage temperature range
Output current
Tstg
℃
Iomax
IAL
mA
mA
V
15
AL signal output current
VAL
60
AL signal output voltage
Tjmax
150
℃
*
Reduce by 6.24 mW/°C over 25°C. (On 70.0 mm x 70.0 mm x 1.6 mm glass epoxy board)
●Operating Conditions
◎BD6701F
Symbol
Vcc
Limit
Unit
V
Parameter
6.0～28.0
0～Vcc-3.0
Operating supply voltage range
Hall input voltage range
VH
V
◎BA6406F
Parameter
Parameter
Parameter
Parameter
Symbol
Vcc
Limit
Unit
V
Operating supply voltage range
Hall input voltage range
4.0～28.0
1.0～Vcc-0.5
VH
V
◎BA6506F
Symbol
Vcc
Limit
Unit
V
Operating supply voltage range
Hall input voltage range
4.0～28.0
1.0～Vcc-0.5
VH
V
◎BA6901F
Symbol
Vcc
Limit
Unit
V
Operating supply voltage range
Hall input voltage range
3.5～28.0
0～Vcc-2.2
VH
V
◎BD6712AF
Symbol
Vcc
Limit
3.5～Vcz
1～30
Unit
V
Operating supply voltage range
Hall input voltage range
VH
V
FG output voltage range，AL output voltage range
VSI
0～48
V
Hall input voltage range
VH
0～Vcz-1.5
V
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© 2012 ROHM Co., Ltd. All rights reserved.
2012.03 - Rev.A
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BD6701F, BA6406F, BA6506F, BA6901F, BD6712AF
Technical Note
●Electrical Characteristics
◎BD6701FV(Unless otherwise specified Ta=25℃,Vcc=12V)
Limit
Symbol
Parameter
Circuit current
Characteristics
Unit
Conditions
Min.
Typ.
Max.
9
3
6
mA
mV
mV
V
Fig.1
-
Icc
Hall input offset voltage
Hall input hysteresis
Output L voltage
-10
-
10
VHofs
Vhys
VOL
±5
±10
±15
0.50
100
58
Fig.2
Fig.3
-
-
0.30
Io=200mA
Output leak current
-
-
μA
V
IOL
Vo=45V
Output zenner voltage
Lock detection ON time
Lock detection OFF time
FG output voltage L
FG output leak current
AL output voltage L
AL output leak current
50
54
Fig.4
Fig.5
Fig.6
Fig.7,8
-
VOZ
TON
TOFF
VALL
IALL
VFGL
IFGL
Clamp current =10mA
0.30
0.50
0.70
7.0
0.4
50
sec
sec
V
3.0
5.0
IFG=5mA
VFG=36V
IAL=5mA
VAL=36V
-
-
-
-
-
-
-
-
μA
V
0.4
50
Fig.7,8
-
μA
◎BA6406F(Unless otherwise specified Ta=25℃,Vcc=12V)
Limit
Typ.
Symbol
Parameter
Circuit current
Characteristics
Unit
Conditions
Min.
-
Max.
5.0
±15
0.5
-
At output OFF
Icc
Vhys
VALL
IAL
3.2
mA
mV
V
Fig.10
Fig.11
Fig.12
-
Hall input hysteresis
AL output L voltage
AL current capacity
±3
-
-
-
-
IAL=5mA
VAL=2V
8.0
mA
Charge current of capacitor for
lock detection
Discharge current of capacitor
for lock detection
Charge-discharge current ratio of
capacitor for lock detection
Clamp voltage of capacitor for
lock detection
VLD=1.5V
ILDC
ILDD
2.0
0.35
3
3.45
0.80
4.5
5.25
1.45
8
μA
μA
-
Fig.13
Fig.13
-
VLD=1.5V
rCD=ILDC/ILDD
rCD
VLDCL
2.2
2.6
3.0
V
Fig.14
Comparison voltage of capacitor
for lock detection
Output H voltage
VLDCP
VOH
0.4
10
0.6
0.8
-
V
V
Fig.14
Fig.15
Io=10mA
10.5
◎BA6506F(Unless otherwise specified Ta=25℃,Vcc=12V)
Limit
Typ.
Symbol
Parameter
Circuit current
Characteristics
Unit
Conditions
Min.
-
Max.
5.0
±15
0.5
-
At output OFF
Icc
Vhys
VALL
IAL
3.2
mA
mV
V
Fig.16
Fig.17
Fig.18
-
Hall input hysteresis
FG output L voltage
FG current capacity
±3
-
-
-
-
IAL=5mA
VAL=2V
8.0
mA
Charge current of capacitor for
lock detection
Discharge current of capacitor
for lock detection
Charge-discharge current ratio of
capacitor for lock detection
Clamp voltage of capacitor for
lock detection
VLD=1.5V
ILDC
ILDD
2.0
0.35
3
3.45
0.80
4.5
5.25
1.45
8
μA
μA
-
Fig.19
Fig.19
-
VLD=1.5V
rCD
rCD=ILDC/ILDD
VLDCL
2.2
2.6
3.0
V
Fig.20
Comparison voltage of capacitor
for lock detection
Output H voltage
VLDCP
VOH
0.4
10
0.6
0.8
-
V
V
Fig.20
Fig.21
10.5
Io=10mA
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© 2012 ROHM Co., Ltd. All rights reserved.
2012.03 - Rev.A
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BD6701F, BA6406F, BA6506F, BA6901F, BD6712AF
Technical Note
◎BA6901F(Unless otherwise specified Ta=25℃,Vcc=12V)
Limit
Symbol
Parameter
Circuit current
Characteristics
Unit
Conditions
At output OFF
Min.
3.0
±4
Typ.
7.0
Max.
12.0
±20
Icc
mA
mV
Fig.22
Fig.23
Hall input hysteresis
Vhys
±10
Charge current of capacitor for
lock detection
Discharge current of capacitor
for lock detection
Charge-discharge current ratio of
capacitor for lock detection
Clamp voltage of capacitor for
lock detection
Comparison voltage of capacitor
for lock detection
VLD=1.5V
ILDC
ILDD
2.0
0.2
4
5.0
0.5
8.0
0.8
μA
μA
-
Fig.24
Fig.24
-
VLD=1.5V
rCD=ILDC/ILDD
rCD
10
16
VLDCL
VLDCP
1.60
0.25
2.40
0.60
3.20
0.95
V
Fig.25
Fig.25
V
Io=-10mA
Voltage between output
and Vcc
Output H voltage
VOH
-
1.5
2.0
V
Fig.26
FG output L voltage
IFG=5mA
VFGL
VALL
-
0.10
0.10
92.0
50
0.50
0.50
99.5
150
-
V
V
Fig.27
Fig.28
Fig.29
-
AL output L voltage
IAL,IALB=5mA
CL=100mV
-
75.0
-
CL-CS offset voltage
Response time for current limit
PWM input voltage H
PWM input voltage L
VofsCS
TCS
mV
μsec
V
At output ON
At output OFF
Fig.30
Fig.30
VPWMH
VPWML
2.0
-
-
-
0.8
V
Charge-discharge pulse
comparison voltage
-
-
-
VCRCP 0.26
0.35
0.44
V
V
V
ITO=-0.5mA
Charge-discharge pulse output
voltage H
Voltage between output
and Vcc
VTOH
VTOL
0.7
0.7
1.0
1.3
Charge-discharge pulse output
voltage L
ITO=0.5mA
1.0
1.3
◎BD6712AF (Unless otherwise specified Ta=25℃,Vcc=5V)
Limit
Typ.
Symbol
Parameter
Internal voltage
Characteristics
Unit
Conditions
Min.
5.5
0.5
4
Max.
6.5
3.0
9.5
25
-
Vcz
Icc1
6.0
1.5
6.7
15
0.5
5
V
Icc=10mA
＊
-
Circuit current1
mA
mA
mV
sec
sec
＊＊
Fig.31
-
Circuit current2
Icc2
Hall input hysteresis voltage
Lock detection ON time
Lock detection OFF time
Vhys
TON
TOFF
5
Fig.32
Fig.33
0.25
2.5
1
10
Vcc-0. Vcc-0.
Fig.34,35
Output H voltage
VOH
Vcc
V
Io=-10mA
5
-
2
0.2
0.15
0
Fig.36,37
Output L voltage
VOL
VFGL
IFGL
VALL
IALL
0.5
0.5
10
V
V
Io=10mA
IFG=5mA
VFG=48V
IAL=5mA
VAL=48V
Fig.38,39
FG output L voltage
FG output leak current
AL output L voltage
AL output leak current
-
-
-
μA
V
Fig.38,39
-
-
0.15
0
0.5
10
-
μA
*
**
H+:3V,H-:2V,Output,FG,AL terminal are open
Hall-input is 100Hz square wave. Output is connected with 1kΩto ground. FG and AL are connected with 50kΩto Vcc.
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© 2012 ROHM Co., Ltd. All rights reserved.
BD6701F, BA6406F, BA6506F, BA6901F, BD6712AF
Technical Note
●Truth table
◎BD6701F
H+
H
H-
L
OUT1
OUT2
FG
H
L
L
(Output Tr OFF)
(Output Tr ON)
(Output Tr ON)
L
H
H
L
H
(Output Tr ON)
(Output Tr OFF)
(Output Tr OFF)
◎BA6406F
H+
H
H-
L
A1
A2
H
L
(Output Tr ON)
(Output Tr OFF)
L
H
L
H
(Output Tr OFF)
(Output Tr ON)
◎BA6506F
H+
H
H-
L
A1
A2
FG
H
L
H
(Output Tr ON)
(Output Tr OFF)
(Output Tr OFF)
L
H
L
L
H
(Output Tr OFF)
(Output Tr ON)
(Output Tr ON)
◎BA6901F
H+
H
L
H-
L
PWM
H, OPEN
H, OPEN
L
A1
A2
FG
H
L
H
(Output Tr ON)
(Output Tr OFF)
(Output Tr OFF)
L
H
L
H
L
(Output Tr OFF)
(Output Tr ON)
(Output Tr ON)
L
L
H
H
L
(Output Tr OFF)
(Output Tr OFF)
(Output Tr OFF)
L
(Output Tr ON)
L
L
H
L
(Output Tr OFF)
(Output Tr OFF)
◎BD6712AF
H+
H-
L
OUT1
OUT2
FG
H
H
L
H
L
L
(Output Tr OFF)
L
H
H
(Output Tr ON)
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© 2012 ROHM Co., Ltd. All rights reserved.
BD6701F, BA6406F, BA6506F, BA6901F, BD6712AF
Technical Note
●Reference Data
◎BD6701F
BD6701F
BD6701F
BD6701F
12
20
10
0
5
4
3
2
1
0
100℃
100℃
9
25℃
-40℃
6
25℃
-40℃
100℃
25℃
-40℃
25℃
3
-10
-20
Operating Voltage Range
Operating Voltage Range
100℃
0
0
6
12
18
24
30
0
6
12
18
24
30
0
0.2
0.4
0.6
0.8
-40℃
Supply voltage, Vcc [V]
Supply voltage, Vcc [V]
Output current, Io [mA]
Fig.1 Circuit current
Fig.2 Hall input hysteresis
Fig.3 Output L voltage
BD6701F
BD6701F
BD6701F
60
58
56
54
52
50
0.60
0.55
0.50
0.45
0.40
6.0
5.5
5.0
4.5
4.0
100℃
100℃
100℃
25℃
25℃
25℃
-40℃
-40℃
Operating Voltage Range
Operating Voltage Range
Operating Voltage Range
-40℃
0
6
12
18
24
30
0
6
12
18
24
30
0
6
12
18
24
30
Supply voltage, Vcc [V]
Supply voltage,Vcc [V]
Supply voltage, Vcc [V]
Fig.5 Lock detection ON time
Fig.4 Output zenner voltage
Fig.6 Lock detection OFF time
BD6701F
BD6701F
BD6701F
0.20
0.15
0.10
0.05
0.00
0.20
0.15
0.10
0.05
0.00
10.0
100℃
6V
25℃
1.0
0.8
12V
28V
-40℃
36
0.1
0
2
4
6
8
10
0.1
1.0
10.0
100.0
0
2
4
6
8
10
FG/AL current, IFG/IAL [mA]
Drain - source voltage, Vds[V]
Fig.9 Output Tr ASO
(Ton=100msec)
FG/AL current, IFG/IAL [mA]
Fig.7 FG/AL output L voltage
(Temperature characteristics)
Fig.8 FG/AL output L voltage
(Voltage characteristics)
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2012.03 - Rev.A
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BD6701F, BA6406F, BA6506F, BA6901F, BD6712AF
Technical Note
◎BA6406F
BA6406F
BA6406F
BA6406F
5
1.0
0.8
0.6
0.4
0.2
0.0
20
Operating Voltage Range
4
3
2
1
0
-40℃
10
0
100℃
100℃
25℃
-40℃
25℃
25℃
-40℃
25℃
100℃
-40℃
-10
-20
100℃
Operating Voltage Range
0
6
12
18
24
30
0
6
12
18
24
30
0
2
4
6
8
10
Supply voltage, Vcc [V]
AL current, IAL[mA]
Supply voltage, Vcc [V]
Fig.10 Circuit current
Fig.11 Hall input hysteresis
Fig.12 AL output L voltage
BA6406F
Operating Voltage Range
BA6406F
BA6406F
0.0
-1.0
-2.0
-3.0
-4.0
-5.0
5.0
4.0
3.0
2.0
1.0
0.0
-1.0
5.0
4.0
3.0
2.0
1.0
0.0
100℃
100℃
25℃
25℃
-40℃
-40℃
-40℃
25℃
-40℃
25℃
100℃
100℃
0
20
40
60
80
0
6
12
18
24
30
0
6
12
18
24
30
Output current, Io [mA]
Supply voltage, Vcc [V]
Supply voltage, Vcc [V]
Fig.13 Charge-discharge current of
capacitor for lock detection
Fig.14 Clamp-comparison voltage
of capacitor for lock detection
Fig.15 Output H voltage
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© 2012 ROHM Co., Ltd. All rights reserved.
BD6701F, BA6406F, BA6506F, BA6901F, BD6712AF
Technical Note
◎BA6506F
BA6406F
BA6406F
BA6406F
5
1.0
0.8
0.6
0.4
0.2
0.0
20
Operating Voltage Range
4
3
2
1
0
-40℃
10
0
100℃
100℃
25℃
-40℃
25℃
25℃
-40℃
25℃
100℃
-40℃
-10
-20
100℃
Operating Voltage Range
0
6
12
18
24
30
0
6
12
18
24
30
0
2
4
6
8
10
Supply voltage, Vcc [V]
AL current, IAL[mA]
Supply voltage, Vcc [V]
Fig.16 Circuit current
Fig.17 Hall input hysteresis
Fig.18AL output L voltage
BA6406F
Operating Voltage Range
BA6406F
BA6406F
5.0
4.0
3.0
2.0
1.0
0.0
-1.0
5.0
4.0
3.0
2.0
1.0
0.0
0.0
-1.0
-2.0
-3.0
-4.0
-5.0
Operating Voltage Range
100℃
25℃
-40℃
100℃
25℃
-40℃
-40℃
25℃
100℃
-40℃
25℃
-40℃
25℃
100℃
100℃
0
6
12
18
24
30
0
6
12
18
24
30
0
20
40
60
80
Supply voltage, Vcc [V]
Supply voltage, Vcc [V]
Output current, Io [mA]
Fig.19 Charge-discharge current of
capacitor for lock detection
Fig.20 Clamp-comparison voltage
of capacitor for lock detection
Fig.21 Output H voltage
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© 2012 ROHM Co., Ltd. All rights reserved.
BD6701F, BA6406F, BA6506F, BA6901F, BD6712AF
Technical Note
◎BA6901F
BA6901F
100℃
BA6901F
BA6901F
6.0
4.0
2.0
0.0
-2.0
10
8
20
10
0
100℃
25℃
100℃
25℃
25℃
-40℃
-40℃
-40℃
6
4
-40℃
25℃
100℃
25℃
-10
-20
2
Operating Voltage Range
100℃
Operating Voltage Range
Operating Voltage Range
-40℃
0
0
6
12
18
24
30
0
6
12
18
24
30
0
6
12
18
24
30
80
30
25℃
Supply voltage, Vcc [V]
Supply voltage, Vcc [V]
Supply voltage, Vcc [V]
Fig.22 Circuit current
Fig.23 Hall input hysteresis
Fig.24 Charge-discharge current of
capacitor for lock detection
BA6901F
BA6901F
BA6901F
5.0
4.0
3.0
2.0
1.0
0.0
0.0
-1.0
-2.0
-3.0
-4.0
-5.0
1.0
Operating Voltage Range
100℃
0.8
0.6
-40℃
25℃
25℃
-40℃
100℃
100℃
0.4
0.2
0.0
25℃
-40℃
0
6
12
18
24
30
0
20
40
60
0
3
6
9
12
15
Supply voltage, Vcc [V]
Output current, Io [mA]
FG current, IFG[mA]
Fig.25 Clamp-comparison voltage of
capacitor for lock detection
Fig.26 Output H voltage
Fig.27 FG Output L voltage
BA6901F
BA6901F
BA6901F
1.0
1.0
0.8
0.5
0.3
0.0
2.0
1.5
1.0
0.5
0.0
-40℃
0.8
0.6
-40℃
25℃
25℃
100℃
100℃
100℃
0.4
0.2
0.0
25℃
Operating Voltage Range
Operating Voltage Range
-40℃
0
3
6
9
12
15
0
6
12
18
24
0
6
12
18
24
30
AL current, IAL[mA]
Supply voltage, Vcc[V]
Supply voltage, Vcc[V]
Fig29 CS-CL offset voltage
Fig.30 PWM input threshold voltage
Fig28 AL Output L voltage
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2012.03 - Rev.A
10/28
BD6701F, BA6406F, BA6506F, BA6901F, BD6712AF
Technical Note
◎BD6712AF
BD6712AF
BD6712AF
BD6712AF
10
8
0.5
0.4
0.3
0.2
0.1
5
4
3
2
1
95℃
95℃
-35℃
-35℃
25℃
-35℃
6
25℃
95℃
25℃
4
2
Operating Voltage Range
Operating Voltage Range
Operating Voltage Range
0
0
6
12
18
24
30
0
6
12
Supply voltage, Vcc [V]
18
24
30
0
6
12
18
24
30
Supply voltage, Vcc [V]
Supply voltage, Vcc [V]
Fig.31 Circuit current
Fig.32 Lock detection ON time
Fig.33 Lock detection OFF time
BD6712AF
BD6712AF
BD6712AF
0
0
-0.2
-0.4
-0.6
-0.8
-1
1
-0.2
-0.4
-0.6
-0.8
-1
0.8
0.6
0.4
0.2
0
-35℃
25℃
28V
12V
95℃
25℃
95℃
-35℃
3.5V
0
10
20
30
40
0
10
20
30
40
0
10
20
30
40
Output current, Io [mA]
Output current, Io [mA]
Output current, Io [mA]
Fig.34 Output H voltage
(Temperature characteristics)
Fig.35 Output H voltage
(Voltage characteristics)
Fig.36 Output L voltage
(Temperature characteristics)
BD6712AF
BD6712AF
BD6712AF
1
0.8
0.6
0.4
0.2
0
0.4
0.3
0.2
0.1
0
0.4
0.3
0.2
0.1
0
3.5V
95℃
25℃
3.5V
12V
12V
28V
-35℃
28V
0
10
20
30
40
0
2
4
6
8
10
0
2
4
6
8
10
Output current, Io [mA]
Fig.37 Output L voltage
(Voltage characteristics)
FG/AL current, IFG/IAL [mA]
FG/AL current, IFG/IAL [mA]
Fig.38 FG/AL output L voltage
(Temperature characteristics)
Fig.39 FG/AL output L voltage
(Voltage characteristics)
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© 2012 ROHM Co., Ltd. All rights reserved.
2012.03 - Rev.A
11/28
BD6701F, BA6406F, BA6506F, BA6901F, BD6712AF
Technical Note
●Block diagram, application circuit, and pin assignment
◎BD6701F
OUT2
1
GND
8
Lock
Detect
Auto
Pre Drive
Connect
a
pull-up resistor
because open collector output
is set.
Restart
AL
2
OUT1
7
P.25
Set according to the amplitude
of hall element output and hall
input voltage range.
OSC
P.22
FG
3
H-
6
HALL
Take a measure against Vcc voltage
rise generated by reverse connection
of current and back electromotive
force.
Control
TSD
P.25
HALL
AMP
REG
H+
5
Vcc
4
-
+
Terminal
PIN No.
Function
name
OUT2
AL
Motor output terminal 2
1
2
3
4
5
6
7
8
Lock alarm signal output terminal
Rotating speed pulse signal output terminal
Power terminal
FG
Vcc
Hall input terminal+
H+
Hall input terminal-
H-
Motor output terminal 1
GND terminal
OUT1
GND
◎BA6406F
Take a measure against Vcc voltage
rise generated by reverse connection
of current and back electromotive
force.
Output Tr is equipped externally.
Provide back electromotive force
Vcc
1
A2
8
a
regenerating current route by Zenner
diode for clamping.
P.25
P.25
REG
A1
7
H+
HALL
AMP
Set according to the amplitude
of hall element output and hall
input voltage range.
HALL
2
+
-
LOGIC
P.22
AL
3
LD
6
0.33μF
～4.7μF
Connect
because open collector output
is set.
a
pull-up resistor
Lock detection ON time and lock
detection OFF time can be set.
Lock
+
-
Detect
Auto
GND
5
H-
4
P.25
Restart
P.17
+
-
Terminal
PIN No.
Function
name
Vcc
H+
AL
Power terminal
1
2
3
4
5
6
7
8
Hall input terminal +
Lock alarm signal output terminal
Hall input terminal -
H-
GND
LD
GND terminal
Lock detection and automatic restart capacitor connecting terminal
A1
Output terminal 1
Output terminal 2
A2
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2012.03 - Rev.A
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© 2012 ROHM Co., Ltd. All rights reserved.
BD6701F, BA6406F, BA6506F, BA6901F, BD6712AF
Technical Note
◎BA6506F
Take a measure against Vcc voltage
rise generated by reverse connection
Output Tr is equipped externally.
Vcc
A2
8
Provide
a back electromotive force
of current and back electromotive
1
regenerating current route by Zenner
diode for clamping.
force.
P.25
P.25
REG
A1
7
H+
HALL
AMP
Set according to the amplitude
of hall element output and hall
input voltage range.
HALL
2
+
-
LOGIC
P.22
FG
3
LD
6
0.33μF
～4.7μF
Connect
because open collector output
is set.
a
pull-up resistor
Lock detection ON time and lock
detection OFF time can be set.
Lock
+
-
Detect
Auto
GND
5
H-
4
P.25
Restart
P.17
+
-
Terminal
PIN No.
Function
name
Vcc
H+
Power terminal
1
2
3
4
5
6
7
8
Hall input terminal +
FG
H-
Rotating speed pulse signal output terminal
Hall input terminal -
GND
LD
GND terminal
Lock detection and automatic restart capacitor connecting terminal
A1
Output terminal 1
Output terminal 2
A2
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2012.03 - Rev.A
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© 2012 ROHM Co., Ltd. All rights reserved.
BD6701F, BA6406F, BA6506F, BA6901F, BD6712AF
Technical Note
◎BA6901F
Incorporates
charging
and
Take a measure against Vcc voltage
discharging pulse circuit and enables
speed control corresponding to
ambient temperature with use of
thermistor.
rise generated by reverse connection
of current and back electromotive
force.
5kΩ
～200kΩ
CR
TOUT
P.25
+
-
P.19
1
16
Output Tr is equipped externally.
0.1μF
～4.7μF
FG
Vcc
Provide
a back electromotive force
Incorporates power supply
clamp circuit and enables
application of high voltage.
regenerating current route by Zenner
diode for clamping.
2
15
REG
A2
AL
P.25
P.25
A2
A1
3
14
Lock
Detect
Auto
ALB
Current limit setting resistor.
P.20
A1
Enables speed control by
pulse input.
4
13
Restart
PWM
CL
P.18
Output current detecting resistor. Pay
attention to wattage because large
current is present
PWM
5
12
～5Ω
0.47μF
-
～4.7μF
Lock detection ON time and lock
detection OFF time can be set.
+
LD
CS
+
-
P.20
6
11
0.001μF
～0.1μF
P.17
CNF
Set according to the amplitude
of hall element output and hall
input voltage range.
H-
7
10
Phase compensating capacitor
when current is limited.
-
+
-
HALL
GND
+
H+
P.22
P.20
8
9
Terminal
PIN No.
Function
name
CR
FG
Charging and discharging pulse circuit capacitor and resistor connecting terminal
Rotating speed pulse signal output terminal
Lock alarm signal output terminal
1
2
AL
3
ALB
PWM
LD
Lock alarm signal terminal(inversion signal of AL)
PWM input terminal(H or OPEN:Output ON, L:Output OFF)
Lock detection and automatic restart capacitor connecting terminal
Phase compensating capacitor connecting terminal
GND terminal
4
5
6
CNF
GND
H+
7
8
Hall input terminal +
9
H-
Hall input terminal -
10
11
12
13
14
15
16
CS
Current detecting input terminal
CL
Current limiting input terminal
A1
Output terminal 1
A2
Output terminal 2
Vcc
TOUT
Power terminal
Charging and discharging pulse output terminal
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2012.03 - Rev.A
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© 2012 ROHM Co., Ltd. All rights reserved.
BD6701F, BA6406F, BA6506F, BA6901F, BD6712AF
Technical Note
◎BD6712AF
Take a measure against Vcc voltage
rise generated by reverse connection
of current and back electromotive
force.
P25
0Ω
～100kΩ
Vcc
OUT2
Incorporates power supply
clamp circuit and enables
application of high voltage.
1
8
REG
TSD
Output Tr is equipped externally.
P.21
Provide
a back electromotive force
regenerating current route by Zenner
diode for clamping
OUT1
H+
+
HALL
2
7
Control
P.25
-
Set according to the amplitude
of hall element output and hall
input voltage range..
HALL
AMP
Connect
because open collector output
is set.
a
pull-up resistor
P.22
FG
AL
3
6
Lock
Detect
Auto
P.25
Restart
Connect
a
pull-up resistor
because open collector output
is set.
H-
GND
4
5
P.25
Terminal
name
PIN No.
Function
Vcc
Power terminal
Hall input terminal+
1
2
3
4
5
6
7
8
H+
AL
Lock alarm signal output terminal
Hall input terminal
H-
GND
FG
GND terminal
Rotating speed pulse signal output terminal
Output terminal 1
OUT1
OUT2
Output terminal 2
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2012.03 - Rev.A
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© 2012 ROHM Co., Ltd. All rights reserved.
BD6701F, BA6406F, BA6506F, BA6901F, BD6712AF
Technical Note
●Description of operations
Function table
Reference
page
BD6701F
BA6406F
BA6506F
BA6901F
BD6712AF
Incorporated
counter
Lock
protection auto
restart
〇
〇
P.16
CR timer
〇
〇
〇
〇
P.17
P.18
P.18,
19
PWM input
Variable speed control
〇
〇
Current limit circuit
Supply voltage clamping circuit
FG output
P.20
P.21
P.25
P.25
〇
〇
〇
〇
〇
〇
〇
〇
AL output
〇
1) Lock protection and automatic restart
○Incorporated counter system ＜BD6701F、BD6712AF＞
Motor rotation is detected by hall signal, and lock detection ON time (TON) and lock detection OFF time (TOFF) are set
by IC internal counter. Timing chart is shown in Fig.40.
H+
TOFF
TON
ON
OUT1
Output Tr OFF
OUT2
FG
Hi (Open collector)
AL
Motor
locking
Lock
release
Recovers
normal operation
Lock
detection
Fig.40 Lock protection (incorporated counter system) timing chart
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2012.03 - Rev.A
16/28
BD6701F, BA6406F, BA6506F, BA6901F, BD6712AF
Technical Note
○CR timer system ＜BA6406F、BA6506F、BA6901F＞
Charging and discharging time at LD terminal depends on the capacitor equipped externally on LD terminal. Charging
and discharging time is determined as follows:
C×(VLDCL-VLDCP)
TON(charging time) =
ILDC
C×(VLDCL-VLDCP)
TOFF(discharging time)=
ILDD
C
： Capacity of capacitor equipped externally on LD terminal
ＶLDCL ： LD terminal clamping voltage
ＶLDCP ： LD terminal comparator voltage
ＩLDC
ＩLDD
： LD terminal charging current
： LD terminal discharging current
For reference, charging and discharging time when C = 1.0μF can be calculated as follows(BA6901F);
Charging time＝0.36sec(output ON)
Discharging time＝3.6sec(output OFF)
Timing chart of LD terminal is shown in Fig.41.
H-
A1
TOFF
TON
ON
Output Tr OFF
LD terminal clamping
voltage
LD
LD terminal comparator
voltage
HIGH(open collector)
AL
FG
Motor Lock
locking detection
Lock Recovers normal
release operation
Fig.41 Lock protection (CR timer system) timing chart
When the motor is locked with hall input terminal (H-) in Lo status, FG logic is reversed.
AL might be high for few hundred ms in turning on. (BA6406F)
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2012.03 - Rev.A
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BD6701F, BA6406F, BA6506F, BA6901F, BD6712AF
Technical Note
3) PWM terminal ＜BA6901F＞
The signal input to PWM terminal is below L (0.8V or less), output (A1 and A2) turns off. And when it is above H (2.0V or
more), output turns on. PWM terminal is pulled up by resistor (30kΩ:typ.) inside IC. When it is open, the output is in
operating mode.
H+
PWM
A1
A2
FG
Fig.42 Timing chart in PWM control
4) Charging and discharging pulse circuit compatible with temperature variable speed control ＜BA6901F＞
When an external capacitor and resistor are connected to CR terminal, saw wave is generated by charging and
discharging of capacitor corresponding to the cycle of hall signal. Saw wave of CR terminal changes with the external
capacitor and resistor. Waveform of CR terminal is output to TOUT by buffer amplifier.
CR terminal is variable from VCRCP (0.35V:typ., see the electric characteristics) to Vcc. When CR voltage is above
Vcc-VTOH (1V:typ., see the electric characteristics), CR terminal signal is not output to TOUT terminal as shown in
Fig.43.
Hall input
Hall input
Vcc-VTOH
(typ. Vcc-1V)
：
Vcc-VTOH
(typ. Vcc-1V)
：
VCRCP
(typ. 0.35V)
：
VCRCP
(typ. 0.35V)
：
CR
CR
Vcc-VTOH
(typ. Vcc-1V)
：
VTOL
(typ. 1V)
：
TOUT
VTOL
(typ. 1V)
：
TOUT
Fig.43 CR terminal and TOUT terminal timing chart
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© 2012 ROHM Co., Ltd. All rights reserved.
BD6701F, BA6406F, BA6506F, BA6901F, BD6712AF
Technical Note
5) Variable speed control application ＜BA6901F＞
This is an example of the application which makes the fan motor rotating speed variable corresponding to ambient
temperature with thermistor by use of charging and discharging pulse circuit and PWM input.
TOUT
CR
+
-
16
1
Vcc
FG
15
2
REG
AL
3
A2
A2
A1
14
Lock
Detect
Auto
ALB
4
A1
13
Restart
CL
PWM
+
-
12
PWM
5
VTH
-
CS
+
LD
Thermistor
11
+
-
6
H-
CNF
10
7
-
+
-
HALL
+
GND
H+
8
9
Fig. 44 Example of temperature variable speed application
VTH
TOUT
PWM
A1
A2
Fig. 45 Temperature variable speed timing chart
When the temperature becomes the lower and the thermistor terminal voltage the higher, PWM pulse becomes the
shorter and speed is reduced as shown in Fig. 45.
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2012.03 - Rev.A
19/28
BD6701F, BA6406F, BA6506F, BA6901F, BD6712AF
Technical Note
6) Current limiting circuit ＜BA6901F＞
Output current limitation can be set by the voltage (VCL) input to CL terminal. Connect a resistor (RNF) for detecting
output current between the emitter of external output transistor and GND, and input the voltage generated by resistor to
CS terminal, thereby detecting the output current. The output current is limited so that CL terminal and CS terminal has
the same potential. There is an offset between CL terminal and CS terminal. Current limiting value can be calculated by
the formula below:
VCL－VofsCS
Current limiting
value ＝
RNF
VofsCS = CL-CS offset
When limiting the output current, capacitor for phase compensation must be connected between CNF terminal and Vcc
terminal. When the output current is not to be limited, fix CL terminal voltage to High level (Vcc) and CS terminal to Low
level (GND).
CNF Vcc
A1
CNF Vcc
A1
A2
A2
CS
CS
Current limiting
CL
CL
(a) When current limiting is applied
(b) When current limiting is not applied
Fig.46 External circuit of output
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BD6701F, BA6406F, BA6506F, BA6901F, BD6712AF
Technical Note
7) Power supply voltage clamping circuit ＜BD6712AF＞
When the external supply voltage exceeds supply clamping voltage Vcz (see the electric characteristics), supply
clamping turns on. Adjust the capacity of bypass capacitor (C2) so that the transient peak voltage does not exceed the
maximum of supply clamping voltage at IC power supply terminal (Vcc).
When you use the external supply voltage above supply clamping voltage, insert the limiting resistor (R1) between the
external supply and IC supply terminal. Set the limiting resistor (R1) so that Icc does not exceed the operation power
supply amperage.
Example of calculation for BD6712AF is shown below:
External supply voltage
：VS
Supply clamping voltage
Hall current limiting resistor
Hall element current
：Vcz=6V(typ.)
：R2
Supply current limiting resistor ：R1
Circuit crrent
Supply terminal voltage
Then,
：Icc
：IH
：Vcc
Hall element resistance
：RH
VS - Vcc
Icc + IH
R1 =
・・・①
Icc
Vcc
R1
OUT2
1
8
VS
C2
REG
TSD
R2
IH
H+
AL
+
-
2
3
4
7
Control
OUT1
RH
HALL
AMP
FG
6
Lock
Detect
Auto
Restart
GND
5
H-
Fig.47 Example of supply voltage clamping application circuit
Assuming R2 = 2kΩ and RH = 0.5kΩ, IH is calculated as follows:
Vcc
IH =
・・・②
R2 + RH
=
=
6V / (2kΩ+0.5kΩ)
2.4mA
Icc has minimum 4mA and maximum 30mA, therefore the minimum and maximum value of R1 is calculated as follows
by the formula ①:
VS
5V
R1 Min. value
0Ω
R1 Max. value
0kΩ
550Ω
2.8kΩ
24V
48V
1.3kΩ
6.6kΩ
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© 2012 ROHM Co., Ltd. All rights reserved.
BD6701F, BA6406F, BA6506F, BA6901F, BD6712AF
Technical Note
8) Hall input setting
Hall input voltage range is shown in operating conditions.
Vcc
Hall input voltage range upper limit
Hall input voltage range lower limit
GND
Fig.48 Hall input voltage range
Adjust the hall element bias resistor R1 and R2 in Fig.49 so that the input voltage at hall amplifier is input in "hall input
voltage range" including the amplitude of signal.
For a model having hall input voltage range lower limit 0V,R2 = 0Ωis acceptable.
○Reduction of noise of hall signal
Hall element may be affected by Vcc noise or the like depending on the wiring pattern of board. In this case, place a
capacitor like C1 in Fig.49. In addition, when wiring from the hall element output to IC hall input is long, noise may be
loaded on wiring. In this case, place a capacitor like C2 in Fig.49.
H-
H+
Vcc
C2
R1
C1
Hall element
RH
R2
Hall bias current ＝ Vcc / (R1+R2+RH )
Fig.49 Application near of hall signal
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© 2012 ROHM Co., Ltd. All rights reserved.
BD6701F, BA6406F, BA6506F, BA6901F, BD6712AF
Technical Note
●Equivalent circuit
◎BD6701F
1) Hall input terminal
2) Output terminal
OUT1
OUT2
Vcc
1k
1k
Ω
Ω
3 FG output terminal
4) AL output terminal
FG
AL
◎BA6406F
1) Hall input terminal
2) Output terminal
3)AL signal output terminal
Vcc
AL
H+
H-
1k
1k
Ω
Ω
A1,A2
15k
Ω
◎BA6506F
1) Hall input terminal
2) Output terminal
3)FG signal output terminal
Vcc
FG
H+
H-
1k
1k
Ω
Ω
A1,A2
15k
Ω
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BD6701F, BA6406F, BA6506F, BA6901F, BD6712AF
Technical Note
◎BA6901F
1) Hall input terminal
2) Current limiting input terminal
3) Charge-discharge pulse
output terminal
Output current detecting terminal
Vcc
Vcc
Vcc
30
30
Ω
Ω
1k
Ω
TOUT
1k
1k
Ω
Ω
1k
1k
Ω
Ω
H+
H-
CS
CL
4) PWM input terminal
5) Output terminal
6) Signal output terminal
FG AL ALB
、
、
Vcc
Vcc
30k
Ω
Ω
A1, A2
1k
Ω
PWM
100k
15k
Ω
GND
◎BD6712AF
1) Hall input terminal
2) Output terminal
Vcc
Vcc
OUT1
OUT2
1k
Ω
H+
H-
1k
1k
Ω
Ω
1k
Ω
3) FG output terminal or AL output terminal
4) Power supply terminal
FG
or
AL
Vcc
50k
Ω
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BD6701F, BA6406F, BA6506F, BA6901F, BD6712AF
Technical Note
●Safety measure
1) Reverse connection protection diode
Reverse connection of power results in IC destruction as shown in Fig 50. When reverse connection is possible, reverse
connection protection diode must be added between power supply and Vcc.
Reverse power connection
Vcc
After reverse connection
destruction prevention
Vcc
In normal energization
Vcc
Circuit
block
Each
pin
Circuit
block
Each
pin
Circuit
block
Each
pin
GND
GND
GND
Internal circuit impedance high
Large current flows
Thermal destruction
No destruction
amperage small
Fig.50 Current flow when power is connected reversely
＊As for BD6701F, this diode is built-in in the IC, so a protection diode between power supply -Vcc terminal is unnecessary.
2) About measures of voltage rise by back electromotive force
The voltage of output terminal rises by back electromotive force. The diode D1 of Fig.51 is necessary to divide a power
supply line of motor with small signal line, so that the voltage of the output does not affect a power supply line.
D1
IC
Fig.51 Separation of a power supply line
The models that incorporate power Tr (BD6701F) have the circuit, which clamps the output voltage so that back
electromotive force does not exceed the maximum rating voltage of output Tr.
3) FG, AL output
Vcc
Pull-up
resistor
FG /AL
Protection
resistor R1
Connector
of board
Fig.52 Protection of FG and AL terminal
FG and AL output is an open collector and requires pull-up resistor.
The IC can be protected by adding resistor R1. An excess of absolute maximum rating, when FG or AL output terminal
is directly connected to power supply, could damage the IC.
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BD6701F, BA6406F, BA6506F, BA6901F, BD6712AF
Technical Note
4) Problem of GND line PWM switching
Do not perform PWM switching of GND line because GND terminal potential cannot be kept to a minimum.
Vcc
Motor
Driver
Controller
GND
PWM input
Prohibite
Fig.53 GND Line PWM switching prohibited
●Calculation of power consumption by IC
Vcc
Power consumption of this IC is approximately calculated as follows:
Pc=Pc1+Pc2+Pc3
Icc
・Pc1：Power consumption by circuit current
Pc1=Vcc×Icc
・Pc2：Power consumption on output stage
Pc2=VOL×Io
FG
IFG
VOL is the L voltage of output terminal 1 and 2.
Io is the current flowing to output terminal 1 and 2.
・Pc3：Power consumption at FG and AL
Pc3=VFG×IFG＋VAL×IAL
OUT1
OUT2
VFG is L voltage of FG output.
Io
VAL is L voltage of AL output.
IFG and IAL are the current of FG and AL.
Fig.54 Calculation of power consumption by IC
Power consumption by IC greatly changes with use condition of IC such as power supply voltage and output current.
Consider thermal design so that the maximum power dissipation on IC package is not exceeded.
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BD6701F, BA6406F, BA6506F, BA6901F, BD6712AF
Technical Note
●Thermal derating curve
Power dissipation (total loss) indicates the power that can be consumed by IC at Ta = 25ºC (normal temperature). IC is
heated when it consumes power, and the temperature of IC chip becomes higher than ambient temperature. The
temperature that can be accepted by IC chip depends on circuit configuration, manufacturing process, etc, and consumable
power is limited. Power dissipation is determined by the temperature allowed in IC chip (maximum junction temperature) and
thermal resistance of package (heat dissipation capability). The maximum junction temperature is in general equal to the
maximum value in the storage temperature range.
Heat generated by consumed power of IC is radiated from the mold resin or lead frame of package. The parameter which
indicates this heat dissipation capability (hardness of heat release) is called heat resistance, represented by the symbol θja
[℃/W]. The temperature of IC inside the package can be estimated by this heat resistance. Fig.55 shows the model of heat
resistance of the package.
Heat resistance θja, ambient temperature Ta, junction temperature Tj, and power consumption P can be calculated by the
equation below:
θja ＝ (Tj－Ta) / P
[℃/W]
Thermal derating curve indicates power that can be consumed by IC with reference to ambient temperature. Power that can
be consumed by IC begins to attenuate at certain ambient temperature. This gradient is determined by thermal resistance
θja.
Thermal resistance θja depends on chip size, power consumption, package ambient temperature, packaging condition, wind
velocity, etc., even when the same package is used. Thermal derating curve indicates a reference value measured at a
specified condition. Fig.56 shows a thermal derating curve (Value when mounting FR4 glass epoxy board 70 [mm] x 70 [mm]
x 1.6 [mm] (copper foil area below 3 [%]))
θja = (Tj-Ta) / P [℃/W]
Ambient temperature Ta[℃]
Chip surface temperature Tj[℃]
Power consumption P[W]
Fig.55 Thermal resistance
Pd(mW)
800
Pd(mW)
800
780
700
700
625
600
560
624
600
BA6901F
500
400
500
400
BD6712AF
BD6701F
BA6406F
300
200
300
200
100
0
100
0
25
50
75 95 100 125
150
Ta(
)
25
50
75 85 95100 125
150
Ta(
)
℃
℃
＊
Reduce by 6.24 mW/°C over 25°C.＜BD6701F, BA6406F, BD6712AF＞
Reduce by 5.0 mW/°C over 25°C.＜BA6901F＞
(70.0mm×70.0mm×1.6mm glass epoxy board)
Fig.56 Thermal derating curve
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© 2012 ROHM Co., Ltd. All rights reserved.
BD6701F, BA6406F, BA6506F, BA6901F, BD6712AF
Technical Note
●Cautions on use
1) Absolute maximum ratings
An excess in the absolute maximum rations, such as supply voltage, temperature range of operating conditions, etc.,
can break down the devices, thus making impossible to identify breaking mode, such as a short circuit or an open circuit.
If any over rated values will expect to exceed the absolute maximum ratings, consider adding circuit protection devices,
such as fuses.
2) Connecting the power supply connector backward
Connecting of the power supply in reverse polarity can damage IC. Take precautions when connecting the power supply
lines. An external direction diode can be added.
3) Power supply line
Back electromotive force causes regenerated current to power supply line, therefore take a measure such as placing a
capacitor between power supply and GND for routing regenerated current. And fully ensure that the capacitor
characteristics have no problem before determine a capacitor value. (when applying electrolytic capacitors, capacitance
characteristic values are reduced at low temperatures)
4) GND potential
The potential of GND pin must be minimum potential in all operating conditions. Also ensure that all terminals except
GND terminal do not fall below GND voltage including transient characteristics. However, it is possible that the motor
output terminal may deflect below GND because of influence by back electromotive force of motor. Malfunction may
possibly occur depending on use condition, environment, and property of individual motor. Please make fully
confirmation that no problem is found on operation of IC.
5) Thermal design
Use a thermal design that allows for a sufficient margin in light of the power dissipation(Pd) in actual operating
conditions.
6) 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.
7) Actions in strong electromagnetic field
Use caution when using the IC in the presence of a strong electromagnetic field as doing so may cause the IC to
malfunction.
8) ASO
When using the IC, set the output transistor so that it does not exceed absolute maximum rations or ASO.
9) Thermal shut down circuit(＊1)
The IC incorporates a built-in thermal shutdown circuit (TSD circuit). Operation temperature is 175℃(typ.) and has a
hysteresis width of 25℃(typ.). When IC chip temperature rises and TSD circuit works, the output terminal becomes an
open state. 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. Do not continue to use the IC after operation this circuit or use the IC in an environment
where the operation of this circuit is assumed. (＊1:BA6406F does not incorporate TSD circuit.)
10) Testing on application boards
When testing the IC on an application board, connecting a capacitor to a pin with low impedance subjects the IC to
stress. Always discharge capacitors after each process or step. Always turn the IC’s power supply off before connecting
it to or removing it from a jig or fixture during the inspection process. Ground the IC during assembly steps as an
antistatic measure. Use similar precaution when transporting or storing the IC.
11) GND wiring pattern
When using both small signal and large current GND patterns, it is recommended to isolate the two ground patterns,
placing a single ground point at the ground potential of application so that the pattern wiring resistance and voltage
variations caused by large currents do not cause variations in the small signal ground voltage. Be careful not to change
the GND wiring pattern of any external components, either.
12) Capacitor between output and GND
When a large capacitor is connected between output and GND, if Vcc is shorted with 0V or GND for some cause, it is
possible that the current charged in the capacitor may flow into the output resulting in destruction. Keep the capacitor
between output and GND below 100uF.
13) IC terminal input
When Vcc voltage is not applied to IC, do not apply voltage to each input terminal. When voltage above Vcc or below
GND is applied to the input terminal, parasitic element is actuated due to the structure of IC. Operation of parasitic
element causes mutual interference between circuits, resulting in malfunction as well as destruction in the last. Do not
use in a manner where parasitic element is actuated.
14) In use
We are sure that the example of application circuit is preferable, but please check the character further more in
application to a part which requires high precision. In using the unit with external circuit constant changed, consider the
variation of externally equipped parts and our IC including not only static character but also transient character and
allow sufficient margin in determining.
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2012.03 - Rev.A
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Notice
N o t e s
No copying or reproduction of this document, in part or in whole, is permitted without the
consent of ROHM Co.,Ltd.
The content specified herein is subject to change for improvement without notice.
The content specified herein is for the purpose of introducing ROHM's products (hereinafter
"Products"). If you wish to use any such Product, please be sure to refer to the specifications,
which can be obtained from ROHM upon request.
Examples of application circuits, circuit constants and any other information contained herein
illustrate the standard usage and operations of the Products. The peripheral conditions must
be taken into account when designing circuits for mass production.
Great care was taken in ensuring the accuracy of the information specified in this document.
However, should you incur any damage arising from any inaccuracy or misprint of such
information, ROHM shall bear no responsibility for such damage.
The technical information specified herein is intended only to show the typical functions of and
examples of application circuits for the Products. ROHM does not grant you, explicitly or
implicitly, any license to use or exercise intellectual property or other rights held by ROHM and
other parties. ROHM shall bear no responsibility whatsoever for any dispute arising from the
use of such technical information.
The Products specified in this document are intended to be used with general-use electronic
equipment or devices (such as audio visual equipment, office-automation equipment, commu-
nication devices, electronic appliances and amusement devices).
The Products specified in this document are not designed to be radiation tolerant.
While ROHM always makes efforts to enhance the quality and reliability of its Products, a
Product may fail or malfunction for a variety of reasons.
Please be sure to implement in your equipment using the Products safety measures to guard
against the possibility of physical injury, fire or any other damage caused in the event of the
failure of any Product, such as derating, redundancy, fire control and fail-safe designs. ROHM
shall bear no responsibility whatsoever for your use of any Product outside of the prescribed
scope or not in accordance with the instruction manual.
The Products are not designed or manufactured to be used with any equipment, device or
system which requires an extremely high level of reliability the failure or malfunction of which
may result in a direct threat to human life or create a risk of human injury (such as a medical
instrument, transportation equipment, aerospace machinery, nuclear-reactor controller, fuel-
controller or other safety device). ROHM shall bear no responsibility in any way for use of any
of the Products for the above special purposes. If a Product is intended to be used for any
such special purpose, please contact a ROHM sales representative before purchasing.
If you intend to export or ship overseas any Product or technology specified herein that may
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More detail product informations and catalogs are available, please contact us.
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A
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