Sharp LT251A Gaas hall ic for noncontact swich(unidirectional magnetic field-type) Datasheet

Hall IC
LT251A
GaAs Hall IC for Noncontact Swich
(Unidirectional magnetic field-type)
Z
0.95
2
S
3
2.9±0.2
0.6
(Unit : mm)
2.9±0.2
1.9
0.4
■ Features
■ Outline Dimensions
2.7±0.3
¡Operation by small magnet due to high sensitivity Operating
point<30mT
Y
¡Combining a GaAs Hall device and an IC in a compact
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
0.85
LT251A
0.4
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
Terminal connections
1.5±0.2
0.6
0.6
REG
Hall
+
device
H
Unit
V
V
mA
mW
˚C
˚C
˚C
*1 Soldering time : within 10 seconds
+0.2
0.8
-
1 : VCC
2 : VOUT
3 : Don't use.
*No.3 terminal and the section of leads (both sides
4 : GND
of package in X direction) are connected with the
terminal of internal IC. Be careful in connecting other circuits.
As for dimensions of tape-packaged products, refer to page 44 .
■ Operating Explanation
Output voltage
Symbol
Rating
VCC
18
VOUT
18
IO
5
PD
100
Topr
-20 to +125
-55 to +150
Tstg
260
Tsol
1.1-0.1
(Ta=25˚C)
(0to0.15)
■ Absolute Maximum Ratings
0.16+0.10
-0.06
0.3
¡FDD
¡HDD
¡Water meter
¡Car stereo
¡Microswitch, etc.
Parameter
Supply voltage
Output voltage
Output current
Power dissipation
Operating temperature
Storage temperature
Soldering temperature*1
0.4
X
■ Applications
<Unidirectional magnetic field-type>
0
BRP
BOP
+B
Magnetic flux density
■ Electrical Characteristics
Parameter
Operating magnetic flux density
Hysteresis breadth
Operating voltage
Supply current
Low level output voltage
High level output voltage
Output short circuit current
Operating point temperature drift
(Ta=25˚C)
Symbol
BOP
BRP
BH
VCC
ICC
VOL
VOH
IOS
∆BOP
Conditions
VCC=16V
VCC=16V, B=<10mT
VCC=16V, IO=4mA, B>=30mT
VCC=16V, IO=-100µA, B=<10mT
VCC=16V
VCC=16V, Ta=-5˚C to+60˚C
VCC=16V, Ta=-20˚C to+80˚C
MIN.
11
10
1
4.5
13.9
-1.55
-
TYP.
2.0
2.5
MAX.
30
29
5
16
10.5
0.4
-0.80
4.5
8.0
Unit
mT
mT
mT
V
mA
V
V
mA
mT
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.
Hall IC
LT251A
Ta=25˚C
24
20
BOP
16
12
BRP
8
4
0
0
Fig. 3
Supply current ICC (mA)
Supply current ICC (mA)
6
4
2
0
Fig. 5
4
8
12
16
Supply voltage VCC (V)
0.8
0.6
0.4
.02
0
0
1
2
3
4
Output current IO (mA)
12
5
BRP
8
4
0
-40
0
40
80
120
Ambient temperature Ta (˚C)
Supply Current vs. Ambient
Temperature
VCC=16V
B=<10mT
8
6
4
2
Fig. 6
1.0
VCC=16V
B>=30mT
Ta=25˚C
BOP
16
0
20
Low Level Output Voltage vs.
Output Current
1.0
20
10
8
0
VCC=16V
Fig. 4
B=<10mT
Ta=25˚C
Operating Magnetic Flux Density
vs. Ambient Temperature
24
20
Supply Current vs. Supply Voltage
10
Low level output voltage VOL (V)
4
8
12
16
Supply voltage VCC (V)
Fig. 2
Operating magnetic flux density B (mT)
Operating Magnetic Flux Density
vs. Supply Voltage
Low level output voltage VOL (V)
Operating magnetic flux density B (mT)
Fig. 1
0.8
-40
0
40
80
120
Ambient temperature Ta (˚C)
Low Level Output Voltage vs.
Ambient Temperature
VCC=16V
IO=4mA
B>=30mT
0.6
0.4
0.2
0
-40
0
40
80
120
Ambient temperature Ta (˚C)
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