Hall IC
LT205A
LT205A
(under development)
GaAs Hall IC for Fan Motor with
Variable Speed by Temperature
s
Outline Dimentions
Y
s
Features
隆Space
saving mounting due to combining a Hall device
and a driver IC in a small 12-pin SOP package
隆Wind
control depending on calorific value
隆Low
noise
隆With
automatic reset and alarm output function when a
motor is locked
隆Surface
mount type (Taping: 1,000 pcs/reel)
s
Applications
隆Brushless
fan motor
隆
Cooling fan motor for personal computers,word
processors, etc.
隆Directly
cooling fan for cooling fin, PCB, etc.
s
Motor drive current vs. temperature (Example)
(Unit : Fmm)
0.8
12
7
0.35
S
1
6
0.15
0.7
0.6
5.0
Output current
100%
Terminal connection
1 : C+
2 : C-
3 : NC
4 : C
EXT
5 : NC
6 : GND
1
7 : A
LOUT
8 : O
UT2
9 : O
UT1
10 : GND
2
11 : V
CC
12 : V
REG
50%
25藲C(*1)
*1,*2 Set at random
45藲C(*2)
Thermistor ambient
temperature
s
Block diagram
Hall IC in the dotted line
V
CC
Hall device
-
+
As for dimensions of tape-packaged products, refer to page 44 .
REG
Rotation
detection
circuit
12 V
REG
V
CC
11
Regulator
10 GND
2
9 O
UT1
8
O
UT2
Fan Motor
1
C+
2
0.1碌F
Thermistor
C-
Temperature
control
circuit
Output time
control
Lock/automatic
reset
4
6
7
C
EXT
GND
1
A
LOUT
s
Electrical Characteristics
Parameter
Operating supply voltage
Output current
Output saturation voltage
Output cut-off current
Operating magnetic flux density
Symbol
V
CC
I
OUT
V
OUT
I
OC
B
1
B
2
Conditions
MIN.
8
-
-
-
-10
-
TYP.
-
-
-
-
-
-
MAX.
28
(0.5)
(1.5)
30
-
10
(5.05)
205
4.4
6.5
(T
a
=25藲C)
Unit
V
A
V
碌A(chǔ)
mT
mT
V
CC
=12V, I
O
=0.5A
V
O
=55V
In the absence of confirmation by device specification sheets, SHARP takes no responsibility for any defects that may occur in equipment using any SHARP devices
shown in catalogs, data books, etc. Contact SHARP in order to obtain the latest device spcification sheets before using any SHARP device.
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