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LT205A Datasheet

GaAs Hall IC for Fan Motor with Variable Speed by Temperature

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Hall IC
LT205A
LT205A (under development)
GaAs Hall IC for Fan Motor with
Variable Speed by Temperature
s Features
¡Space saving mounting due to combining a Hall device
and a driver IC in a small 12-pin SOP package
¡Wind control depending on calorific value
¡Low noise
¡With automatic reset and alarm output function when a
motor is locked
¡Surface mount type (Taping: 1,000 pcs/reel)
s Outline Dimentions
Y
0.8
12
0.35
7
205
S
(Unit : Fmm)
s Applications
¡Brushless fan motor
¡Cooling fan motor for personal computers,word
processors, etc.
¡Directly cooling fan for cooling fin, PCB, etc.
16
0.15
0.7
s Motor drive current vs. temperature (Example)
100%
50%
25˚C(*1)
*1,*2 Set at random
45˚C(*2)
Thermistor ambient
temperature
s Block diagram
0.1µF
Hall device
-
+
Temperature
1 control
C+ circuit
2
Output time
control
C-
Hall IC in the dotted line
REG
VCC
12 VREG
11 VCC
Rotation
detection
circuit
Regulator
10 GND2
9 OUT1
Lock/automatic
reset
8 OUT2
Fan Motor
Thermistor
46 7
CEXT GND1 ALOUT
0.6
5.0
Terminal connection
1 : C+
2 : C-
3 : NC
4 : CEXT
5 : NC
6 : GND1
7 : ALOUT
8 : OUT2
9 : OUT1
10 : GND2
11 : VCC
12 : VREG
As for dimensions of tape-packaged products, refer to page 44 .
s Electrical Characteristics
Parameter
Operating supply voltage
Output current
Output saturation voltage
Output cut-off current
Operating magnetic flux density
Symbol
VCC
IOUT
VOUT
IOC
B1
B2
Conditions
VCC=12V, IO=0.5A
VO=55V
MIN.
8
-
-
-
-10
-
TYP.
-
-
-
-
-
-
(Ta=25˚C)
MAX.
28
(0.5)
(1.5)
30
-
Unit
V
A
V
µA
mT
10 mT
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.


Part Number LT205A
Description GaAs Hall IC for Fan Motor with Variable Speed by Temperature
Maker Sharp Electrionic Components
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LT205A Datasheet PDF






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