TECHNICAL NOTE
DC Brushless Motor Driver Series for Cooling Fans
Standard Single-phase Full-wave
DC Brushless Fan Motor Drivers
BA6427F,BA6428F,BA6908F,BA6906F,BA6423AF,BA6424AFS
●Description
This is the summary of models of the single-phase full-wave fan motor driver with standard function.
They incorporate lock protection and automatic restart circuit.
●Features
1) Lock protection and automatic restart circuit
2) Soft switched drive(BA6908F、BA6906F)
3) Rotating speed pulse signal (FG) output (BA6427F、BA6908F、BA6424AFS)
4) Lock alarm signal (AL) output (BA6428F、BA6906F、BA6423AF、BA6424AFS)
●
Applications
For application of desktop PC and general consumer equipment
●Lineup
Standard
single-phase full-wave
12V power supply
Soft switching not available
FG
output
AL
output
BA6427F
BA6428F
BA6908F
BA6906F
BA6423AF
BA6424AFS
Soft switching available
FG
output
AL
output
24V power supply
Soft switching not available
AL
output
FG・AL
output
Jan. 2007
●Absolute
Maximum Ratings
◎BA6427F,
BA6428F
Parameter
Supply voltage
Power dissipation
Operation temperature
Storage temperature
Low side output current
Output voltage
FG signal output current
AL signal output current
FG signal output voltage
AL signal output voltage
Junction temperature
＊
Symbol
Vcc
Pd
Topr
Tstg
Iomax
VOUT
IFG
IAL
VFG
VAL
Tjmax
Limit
15
780＊
-40½+85
-55½+150
0.7＊＊
15
15
15
15
15
150
Unit
V
mW
℃
℃
A
V
mA
mA
V
V
℃
Reduce by 6.24mW/℃ over 25℃.
(On 70.0mm×70.0mm×1.6mm glass epoxy board)
＊＊
This value is not to exceed Pd.
◎BA6908F,
BA6906F
Parameter
Supply voltage
Power dissipation
Operation temperature
Storage temperature
Output current
Output voltage
FG signal output current
AL signal output current
FG signal output voltage
AL signal output voltage
Junction temperature
＊
Symbol
Vcc
Pd
Topr
Tstg
Iomax
VOUT
IFG
IAL
VFG
VAL
Tjmax
Limit
15
780＊
-40½+100
-55½+150
0.7＊＊
15
15
15
15
15
150
Unit
V
mW
℃
℃
A
V
mA
mA
V
V
℃
Reduce by 6.24mW/℃ over 25℃.
(On 70.0mm×70.0mm×1.6mm glass epoxy board)
＊＊
This value is not to exceed Pd.
◎BA6423AF
Parameter
Supply voltage
Power dissipation
Operation temperature
Storage temperature
Output current
Output voltage
AL signal output voltage
Junction temperature
＊
＊＊
Symbol
Vcc
Pd
Topr
Tstg
Iomax
VOUT
VAL
Tjmax
Limit
30
780＊
-40½+100
-55½+150
1.0＊＊
30
30
150
Unit
V
mW
℃
℃
A
V
V
℃
Reduce by 6.24mW/℃ over 25℃.
(On 70.0mm×70.0mm×1.6mm glass epoxy board)
This value is not to exceed Pd.
2/16
◎BA6424AFS
Parameter
Supply voltage
Power dissipation
Operation temperature
Storage temperature
Output current
Output voltage
AL signal output voltage
FG signal output voltage
Junction temperature
＊
＊＊
Symbol
Vcc
Pd
Topr
Tstg
Iomax
VOUT
VAL
VFG
Tjmax
Limit
30
812.5＊
-40½+100
-55½+150
1.0＊＊
30
30
30
150
Unit
V
mW
℃
℃
A
V
V
V
℃
Reduce by 6.24mW/℃ over 25℃.
(On 70.0mm×70.0mm×1.6mm glass epoxy board)
This value is not to exceed Pd.
●OPERATING
CONDITIONS
◎BA6427F,
BA6428F
Parameter
Operating supply voltage range
Hall input voltage range
◎BA6908F,
BA6906F
Parameter
Operating supply voltage range
Hall input voltage range
◎BA6423AF
Parameter
Operating supply voltage range
Hall input voltage range
◎BA6424AFS
Parameter
Operating supply voltage range
Hall input voltage range
Symbol
Vcc
VH
Limit
6.0½28.0
2.5½Vcc
Unit
V
V
Symbol
Vcc
VH
Limit
6.0½28.0
2.5½Vcc
Unit
V
V
Symbol
Vcc
VH
Limit
3.0½14.0
0½Vcc-2.0
Unit
V
V
Symbol
Vcc
VH
Limit
3.0½14.0
0½Vcc-2.0
Unit
V
V
●Truth
table
◎BA6427F,
BA6908F, BA6424AFS
H+
H
L
H-
L
H
OUT1
H
L
OUT2
L
H
FG
H
L
◎BA6428F,
BA6906F, BA6423AF
H+
H
L
H-
L
H
OUT1
H
L
OUT2
L
H
3/16
●ELECTRICAL
CHARACTERISTICS
◎BA6427F,
BA6428F (Unless otherwise specified Ta=25℃,Vcc=5V)
Parameter
Circuit current
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
Output voltage L
Output voltage H
FG output voltage L
AL output voltage L
FG output leak current
AL output leak current
Symbol
Min.
Limit
Typ.
Max.
Parameter
Conditions
At output OFF
VLD=1.1V
VLD=1.1V
rCD=ILDC/ILDD
Characteristics
Icc
ILDC
ILDD
rCD
VLDCL
VLDCP
VOL
VOH
VFGL
VALL
IFGL
IALL
2.2
1.60
0.24
4.5
1.27
0.47
-
3.9
-
-
-
-
4.5
2.90
0.48
6.0
1.93
0.76
0.2
4.1
0.3
0.3
0
0
9.0
4.64
0.80
10.0
2.60
1.06
0.3
-
0.5
0.5
50
50
mA
μA
μA
-
V
V
V
V
V
V
μA
μA
Fig.1
Fig.2
Fig.2
-
Fig.3
Fig.3
Io=200mA
Io=-200mA
IFG=5mA
IAL=5mA
VFG=15V
VAL=15V
Fig.4
Fig.5
-
-
-
-
◎BA6908F,
BA6906F (Unless otherwise specified Ta=25℃,Vcc=5V)
Parameter
Circuit current
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
Output voltage L
Output voltage H
FG output voltage L
AL output voltage L
FG output leak current
AL output leak current
Hall input offset voltage
Hall input-output gain
Symbol
Min.
Limit
Typ.
Max.
Parameter
Conditions
At output OFF
VLD=1.1V
VLD=1.1V
rCD=ILDC/ILDD
Characteristics
Icc
ILDC
ILDD
rCD
VLDCL
VLDCP
VOL
VOH
VFGL
VALL
IFGL
IALL
Hofs
GHO
1.5
1.50
0.24
4.2
1.14
0.47
-
3.9
-
-
-
-
-10
320
3.4
2.75
0.48
5.7
1.80
0.76
0.2
4.1
0.3
0.3
0
0
-
500
8.7
4.50
0.90
9.5
2.47
1.06
0.3
-
0.5
0.5
50
50
10
680
mA
μA
μA
-
V
V
V
V
V
V
μA
μA
mV
-
Fig.7
Fig.8
Fig.8
-
FIg.9
Fig.9
Io=200mA
Io=-200mA
IFG=5mA
IAL=5mA
VFG=15V
VAL=15V
Fig.10
Fig.11
-
-
-
-
-
-
4/16
◎BA6423AF
(Unless otherwise specified Ta=25℃,Vcc=12V)
Parameter
Circuit current
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
Output voltage L
Output voltage H
AL output voltage L
AL output leak current
Symbol
Min.
Limit
Typ.
Max.
Parameter
Conditions
At output OFF
VLD=1.8V
VLD=1.8V
rCD=ILDC/ILDD
Characteristics
Icc
ILDC
ILDD
rCD
VLDCL
VLDCP
VOL
VOH
VALL
IALL
2.7
1.55
0.33
3.0
2.00
0.70
-
-
-
-
5.4
3.10
0.66
4.7
2.48
0.99
0.8
0.9
0.1
0
8.1
4.65
0.99
6.4
3.00
1.30
1.2
1.4
0.3
10
mA
μA
μA
-
V
V
V
V
V
μA
Fig.13
-
-
-
-
-
Io=200mA
Io=-200mA
IAL=10mA
VAL=30V
Fig.14
Fig.15
Fig.16
-
◎BA6424AFS
(Unless otherwise specified Ta=25℃,Vcc=12V)
Parameter
Circuit current
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
Output voltage L
Output voltage H
AL output voltage L
AL output leak current
FG output voltage L
FG output leak current
Symbol
Min.
Limit
Typ.
Max.
Parameter
Conditions
At output OFF
VLD=1.8V
VLD=1.8V
rCD=ILDC/ILDD
Characteristics
Icc
ILDC
ILDD
rCD
VLDCL
VLDCP
VOL
VOH
VALL
IALL
VFGL
IFGL
2.7
1.55
0.33
3.0
2.00
0.70
-
-
-
-
-
-
5.4
3.10
0.66
4.7
2.48
0.99
0.8
0.9
0.1
0
0.1
0
8.1
4.65
0.99
6.4
3.00
1.30
1.2
1.4
0.3
10
0.3
10
mA
μA
μA
-
V
V
V
V
V
μA
V
μA
Fig.19
-
-
-
-
-
Io=200mA
Io=-200mA
IAL=10mA
VAL=30V
IFG=10mA
VFG=30V
Fig.20
Fig.21
Fig.22
-
Fig.22
-
5/16
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