Sharp LT205A Datasheet
Hall IC LT205A
GaAs Hall IC for Fan Motor with
LT205A
(under development)
■ 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)
■ Applications
¡Brushless fan motor
¡ Cooling fan motor for personal computers,word
processors, etc.
¡Directly cooling fan for cooling fin, PCB, etc.
■ Outline Dimentions
Variable Speed by Temperature
(Unit : Fmm)
Y
0.8
12 7
0.35
205
4.4
6.5
S
16
0.7
(5.05)
0.15
■ Motor drive current vs. temperature (Example)
100%
50%
Output current
25˚C(*1) 45˚C(*2)
*1,*2 Set at random
Thermistor ambient
temperature
■ Block diagram
0.1µF
Thermistor
Hall device
Temperature
1
control
circuit
C+
Output time
2
control
C-
Hall IC in the dotted line
REG
+
Rotation
detection
circuit
Lock/automatic
reset
4 6 7
C
EXT
GND1A
Regulator
LOUT
12
V
11
10
GND
O
9
O
8
V
CC
V
REG
CC
2
UT1
UT2
Fan Motor
■ Electrical Characteristics
Operating supply voltage
Parameter
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
V
CC
=12V, IO=0.5A
V
O
=55V
0.6
5.0
Terminal connection
1 : C+
2 : C3 : NC
4 : C
5 : NC
6 : GND
EXT
1
7 : A
LOUT
8 : O
UT2
9 : O
UT1
10 : GND
11 : V
CC
12 : V
REG
2
As for dimensions of tape-packaged products, refer to page 44 .
(Ta=25˚C)
MAX.
-10
TYP.
28
8
-
-
-
-
-
(0.5)
(1.5)
30
-
-
-
Conditions
MIN.
- - 10 mT
Unit
V
A
V
µA
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.
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