Applied voltage
Power dissipation
Operating temperature
Storage temperature
V
CC
Pd
Topr
Tstg
V
mW
C
C
30
550
*
70
125
Limits
30 ~ +75
*Derating : 5.5mW/C for operation above Ta=25C
(Mounted on a 70.0mm
70.0mm
1.6mm glass epoxy PCB.)
Output current
I
OMAX
mA
Junction temperature
T
jmax
C
Unit
Symbol
Parameter
2-phase half-wave motor pre-driver
BA6409F
1) Built-in discrete diode for reverse connection
protection. (Maximum reverse connection
protection voltage: 80V)
2) Lock-up detector function & lock-up detector
output pin.
3) Compact SOP8-pin package. Fewer external
components make mounting spaces smaller.
4) Automatic restart when lock-up is removed.
5) Hall element input hysteresis circuit is built-in.
The BA6409F is a two-phase half-wave motor pre-
driver for fan motors. The built-in protection diode
eliminates an external diode and the concern of
connecting in reverse when fan motors equipped.
The device also has a lock-up detector and
automatic restart function. There is a lock-up
detector output pin on the IC.
SOP8
99W031A
1999
5
22
Dimension
(Units : mm)
Description
Features
Absolute Maximum Ratings
(Ta=25C)
Applications
Two-phase half-wave motor pre-driver for fan motor
High reliability
55 ~ +125
Applied voltage
Power dissipation
Operating temperature
Storage temperature
V
CC
Pd
Topr
Tstg
V
mW
C
C
30
550
*
70
125
Limits
30 ~ +75
*Derating : 5.5mW/C for operation above Ta=25C
(Mounted on a 70.0mm
70.0mm
1.6mm glass epoxy PCB.)
Output current
I
OMAX
mA
Junction temperature
T
jmax
C
Unit
Symbol
Parameter
2-phase half-wave motor pre-driver
BA6409F
1) Built-in discrete diode for reverse connection
protection. (Maximum reverse connection
protection voltage: 80V)
2) Lock-up detector function & lock-up detector
output pin.
3) Compact SOP8-pin package. Fewer external
components make mounting spaces smaller.
4) Automatic restart when lock-up is removed.
5) Hall element input hysteresis circuit is built-in.
The BA6409F is a two-phase half-wave motor pre-
driver for fan motors. The built-in protection diode
eliminates an external diode and the concern of
connecting in reverse when fan motors equipped.
The device also has a lock-up detector and
automatic restart function. There is a lock-up
detector output pin on the IC.
SOP8
99W031A
1999
5
22
Dimension
(Units : mm)
Description
Features
Absolute Maximum Ratings
(Ta=25C)
Applications
Two-phase half-wave motor pre-driver for fan motor
High reliability
55 ~ +125
V
V
28
Vcc-1.7
Input voltage *
VBH
1.0
--
--
Supply voltage
V
CC
5.2
Parameter
Symbol
Min.
Typ.
Max.
Unit
*Input voltage includes signal amplitude.
Pin6 charge/discharge
current ratio
rcd
8
4.5
3
I6c/I6d
Circuit current
Hall amplifier input hysteresis (+)
Pin3 "L"output voltage
Pin3 current capacity
Pin6 charge current
Pin6 discharge current
Pin6 clamp voltage
Pin6 comparater voltage
V6cp
V
0.8
0.6
0.4
I
CC
V
hya+
V
hya
V3L
I3
I6C
I6d
V6cL
mA
mV
mV
V
mA
A
A
V
5.0
+15
--
--
--
--
--
--
--
--
--
--
15
0.5
5.25
1.45
3.0
3.2
3.45
0.80
2.6
+3
3
8.0
2.0
0.35
2.2
Output off
VB=6V
(Voltage on Pin2 with respect to Pin4)
VB=6V
I3L=5.0mA
V3L=2.0V
V6PIN=1.5V
V6PIN=1.5V
Conditions
Symbol
Unit
Min.
Typ.
Max.
*
The products described herein are not designed to be X ray proof.
Pin7 "H"output voltage
Pin8 "H"output voltage
V7H
V8H
8.8
8.8
9.8
9.8
V
V
Io=10mA
Io=10mA
Parameter
(Unless otherwise noted, Ta=25
C
, Vcc=12V)
Recommended Operating Conditions (Ta=25C)
Electrical Characteristics
Application circuit
AUTOMATIC
RESET
CIRCUIT
LOCK
DETECTION
LOGIC
REGU-
LATOR
Hall AMP
4
3
HALL
ELEMENT
2
1
8
7
6
5
Vcc
(Voltage on Pin2 with respect to Pin4)
Hall amplifier input hysteresis ()
V
V
28
Vcc-1.7
Input voltage *
VBH
1.0
--
--
Supply voltage
V
CC
5.2
Parameter
Symbol
Min.
Typ.
Max.
Unit
*Input voltage includes signal amplitude.
Pin6 charge/discharge
current ratio
rcd
8
4.5
3
I6c/I6d
Circuit current
Hall amplifier input hysteresis (+)
Pin3 "L"output voltage
Pin3 current capacity
Pin6 charge current
Pin6 discharge current
Pin6 clamp voltage
Pin6 comparater voltage
V6cp
V
0.8
0.6
0.4
I
CC
V
hya+
V
hya
V3L
I3
I6C
I6d
V6cL
mA
mV
mV
V
mA
A
A
V
5.0
+15
--
--
--
--
--
--
--
--
--
--
15
0.5
5.25
1.45
3.0
3.2
3.45
0.80
2.6
+3
3
8.0
2.0
0.35
2.2
Output off
VB=6V
(Voltage on Pin2 with respect to Pin4)
VB=6V
I3L=5.0mA
V3L=2.0V
V6PIN=1.5V
V6PIN=1.5V
Conditions
Symbol
Unit
Min.
Typ.
Max.
*
The products described herein are not designed to be X ray proof.
Pin7 "H"output voltage
Pin8 "H"output voltage
V7H
V8H
8.8
8.8
9.8
9.8
V
V
Io=10mA
Io=10mA
Parameter
(Unless otherwise noted, Ta=25
C
, Vcc=12V)
Recommended Operating Conditions (Ta=25C)
Electrical Characteristics
Application circuit
AUTOMATIC
RESET
CIRCUIT
LOCK
DETECTION
LOGIC
REGU-
LATOR
Hall AMP
4
3
HALL
ELEMENT
2
1
8
7
6
5
Vcc
(Voltage on Pin2 with respect to Pin4)
Hall amplifier input hysteresis ()
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