LT205A Datasheet, PDF (1/1 Pages) Sharp Electrionic Components – GaAs Hall IC for Fan Motor with Variable Speed by Temperature

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.
1
6
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. Unit
28
V
(0.5)
A
(1.5)
V
30
µA
-
mT
10
mT
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shown in catalogs, data books, etc. Contact SHARP in order to obtain the latest device spcification sheets before using any SHARP device.