ETC1 BA6409F 2-phase half-wave motor pre-driver Datasheet

99W031A
High reliability
2-phase half-wave motor pre-driver
BA6409F
Description
Dimension (Units : mm)
The BA6409F is a two-phase half-wave motor predriver 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.
Features
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.
SOP8
Applications
Two-phase half-wave motor pre-driver for fan motor
Absolute Maximum Ratings (Ta=25˚C)
Parameter
Applied voltage
Power dissipation
Symbol
Limits
Unit
VCC
30
550 *
mW
V
Operating temperature
Pd
Topr
Storage temperature
Tstg
–30 ~ +75
–55 ~ +125
˚C
Output current
IOMAX
70
mA
Junction temperature
Tjmax
125
˚C
˚C
*Derating : 5.5mW/˚C for operation above Ta=25˚C
(Mounted on a 70.0mm¥70.0mm¥1.6mm glass epoxy PCB.)
1999
5
22
Recommended Operating Conditions (Ta=25˚C)
Symbol
Min.
Typ.
Max.
Unit
Supply voltage
VCC
5.2
—
28
V
Input voltage *
VBH
1.0
—
Vcc-1.7
V
Parameter
*Input voltage includes signal amplitude.
Electrical Characteristics (Unless otherwise noted, Ta=25 ˚C , Vcc=12V)
Parameter
Symbol
Min.
Typ.
Max.
Unit
Circuit current
Hall amplifier input hysteresis (+)
ICC
—
3.2
5.0
mA
Output off
Vhya+
+3
—
+15
mV
VB=6V (Voltage on Pin2 with respect to Pin4)
–3
Pin3 "L"output voltage
Vhya–
V3L
—
—
–15
0.5
mV
V
VB=6V (Voltage on Pin2 with respect to Pin4)
I3L=5.0mA
Pin3 current capacity
I3
—
—
mA
V3L=2.0V
Hall amplifier input hysteresis (–)
—
8.0
Conditions
Pin6 charge current
I6C
2.0
3.45
5.25
µA
V6PIN=1.5V
Pin6 discharge current
I6d
0.35
0.80
1.45
µA
V6PIN=1.5V
Pin6 charge/discharge
current ratio
rcd
3
4.5
8
—
I6c/I6d
Pin6 clamp voltage
V6cL
2.2
2.6
3.0
V
Pin6 comparater voltage
V6cp
0.4
0.6
V
Pin7 "H"output voltage
Pin8 "H"output voltage
V7H
V8H
8.8
8.8
9.8
9.8
0.8
—
V
V
—
Io=10mA
Io=10mA
* The products described herein are not designed to be X ray proof.
Application circuit
Vcc
8
7
6
5
AUTOMATIC
RESET
CIRCUIT
LOGIC
LOCK
DETECTION
Hall AMP
REGULATOR
1
2
3
HALL
ELEMENT
4
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