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LT280A Datasheet

GaAs Hall IC for Noncontact Switch(Unidirectional magnetic field-type)

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Hall IC
LT280A
LT280A
GaAs Hall IC for Noncontact Switch
(Unidirectional magnetic field-type)
s Features
s Outline Dimensions
¡Suitable for portable equipment due to 3V operation
¡Operation by small magnet due to high sensitivity
Operating point<30mT
¡Combining a GaAs Hall device and an IC in a compact
2.7±0.3
Y
1
4
package (2.9X1.5X1.1mm)
¡Wide operation temperature range obtained by GaAs Hall
device (-20 to +125˚C)
¡Long life time due to noncontact-type
23
S
X
(Unit :mm)
Z
s Applications
¡FDD
¡HDD
¡Water meter
¡Car stereo
¡Microswitch, etc.
4-R0.2
Hall device center line
X : +0.05±0.23mm against package center
Y : -0.05±0.1mm against package lead center between
No.2 and No.3 terminals
Z : 0.81±0.15mm from package surface
0.6 1.5±0.2 0.6
Terminal connections
REG
Hall
device
H
+
-
s Absolute Maximum Ratings
(Ta=25˚C)
Parameter
Supply voltage
Output voltage
Output current
Power dissipation
Operating temperature
Storage temperature
Soldering temperature*1
Symbol
VCC
VOUT
IO
PD
Topr
Tstg
Tsol
Rating
6.5
6.5
5
100
-20 to +125
-55 to +150
260
Unit
V
V
mA
mW
˚C
˚C
˚C
*1 Soldering time : within 10 seconds
1 : VCC
2 : VOUT
*No.3 terminal and the section of lead (both sides
of package in X direction) are connected with the
3 : Don't use.
4 : GND
terminal of internal IC. Be careful in connecting other circuits.
As for dimensions of tape-packaged products, refer to page 44 .
s Operating Explanation
<Unidirectional magnetic field-type>
0 BRP BOP
+B
Magnetic flux density
s Electrical Characteristics
Parameter
Operating magnetic flux density
Hysteresis breadth
Operating voltage
Supply current
Low level output voltage
Output leakage current
Operating point temperature drift
Symbol
BOP
BRP
BH
VCC
ICC
VOL
IOH
BOP
VCC=3V
VOO=3V
RL=4.7k
Condition
VCC=3V, B=<10mT
IO=4mA, B>=30mT
VCC=3V, VOO=3V, B=<10mT
VCC=3V, Ta=-20˚C to +80˚C
MIN.
11.0
10.0
1.0
2.7
-
-
-
-
TYP.
-
-
-
-
3.5
-
-
2.5
(Ta=25˚C)
MAX.
30.0
29.0
6.0
6.0
7.0
0.4
10
8.0
Unit
mT
mT
mT
V
mA
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.


Sharp Electronic Components Datasheet

LT280A Datasheet

GaAs Hall IC for Noncontact Switch(Unidirectional magnetic field-type)

No Preview Available !

Hall IC
Fig. 1 Operating Magnetic Flux Density vs.
Supply Voltage
TA=25˚C
24
20
16
12
BOP
BRP
8
4
0
0 2 4 6 8 10
Supply voltage VCC (V)
Fig. 3 Supply Current vs. Supply Voltage
10
B=<10mT
Ta=25˚C
8
6
4
2
0
0 2 4 6 8 10
Supply voltage VCC (V)
Fig. 5 Low Level Output Voltage vs.
Output Current
0.5
VCC= V
B>=30mT
0.4 Ta=25˚C
0.3
0.2
0.1
0
0 12 34 5
Output current IO (mA)
LT280A
Fig. 2 Operating Magnetic Flux Density vs.
Ambient Temperature
VCC=3V
24
BOP
20
BRP
16
12
8
4
0
-40
0
40 80 120
Ambient temperature Ta (˚C)
Fig. 4 Supply Current vs. Ambient
Temperature
10
VCC=3V
B=<10mT
8
6
4
2
0
-40 0 40 80 120
Ambient temperature Ta (˚C)
Fig. 6 Low Level Output Voltage vs.
Ambient Temperature
0.5
VCC=3V
IO=4mA
0.4 B>=30mT
0.3
0.2
0.1
0
-40
0
40 80 120
Ambient temperature Ta (˚C)


Part Number LT280A
Description GaAs Hall IC for Noncontact Switch(Unidirectional magnetic field-type)
Maker Sharp Electrionic Components
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