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s
Outline Dimentions
(Unit : Fmm)
Hall IC
LT230A
s
Features
Same temperature coefficient of magnetic flux density as
a magnet
Operation by small magnet due to high sensitivity
Operating point <20mT
Combining a GaAs Hall device and an IC in a compact
package (2.9
X
1.5
X
1.1mm)
Wide operation temperature range obtained by GaAs Hall
device (-20 to +125C)
Long life time due to noncontact-type
s
Applications
FDD
HDD
Noncontact switch
*
Soldering time : within 10 seconds
s
Absolute Maximum Ratings
(T
a
=25C)
Supply voltage
Output voltage
Output current
Power dissipation
Operating temperature
Storage temperature
Soldering temperature
*
Symbol
V
CC
V
OUT
I
O
P
D
T
opr
T
stg
T
sol
Rating
18
18
5
100
-20 to +125
-55 to +150
260
Unit
V
V
mA
mW
C
C
C
Parameter
s
Electrical Characteristics
(T
a
=25C)
Hysteresis breadth
Operating voltage
Supply current
Low level output voltage
Output leakage current
Operating point temperature drift
Symbol
B
OP
B
RP
B
H
V
CC
I
CC
V
OL
I
OH
B
OP
Condition
V
CC
=5V
V
OO
=5V
R
L
=10K
V
CC
=16V, B=<5mT
I
O
=4mA, B>=20mT
V
CC
=16V, V
OO
=16V, B=<10mT
V
CC
=5V, T
a
=-20C to +80C
MIN.
-
5
1
4.5
-
-
-
-
TYP.
13
11
-
-
-
-
-
-0.2
MAX.
20
-
6
16
10.5
0.4
10
-
Unit
mT
mT
mT
V
mA
V
A
%/C
Parameter
Operating magnetic flux density
2.70.3
1.50.2
1
2
4
3
0.6
0.4
0.4
0.4
1.9
2.90.2
0.85
0.95
2.90.2
4-R0.2
S
Z
0.6
0.6
0.3
0.8
(0to0.15)
0.16
+0.10
-0.06
1.1
+0.2
-0.1
1:V
CC
2:V
OUT
3:Don't use.
4:GND
+
-
H
REG
Y
X
Hall device center line
X:+0.050.23mm against package center
Y:-0.050.1mm against package lead center between
No.2 and No.3 terminals
Z:0.810.15mm from package surface
*No.3 terminal and the section of leads(both sides
of package in X direction)are connected with the
terminal of internal IC. Be careful in connecting other circuits.
Terminal connections
Hall
device
As for dimensions of tape-packaged products, refer to page 44 .
LT230A
GaAs Hall IC for Noncontact Switch
(Unidirestional magnetic field-type)
Hall IC
Fig. 1 Operating Magnetic Flux Density vs.
Supply Voltage
Fig. 3 Supply Current vs. Supply Voltage
Fig. 4 Supply Current vs. Ambient
Temperature
Fig. 5 Low Level Output Voltage vs.
Output Current
Fig. 6 Low Level Output Voltage vs.
Ambient Temperature
Fig. 2 Operating Magnetic Flux Density
vs. Ambient Temperature
T
a
=25C
B
OP
B
RP
0
0
16
8
12
4
20
20
16
8
4
24
12
Operating magnetic flux density B
(mT)
Supply voltage V
CC
(V)
V
CC
=5V
B
OP
B
RP
0
80
0
40
-40
120
20
16
8
4
24
12
Operating magnetic flux density B
(mT)
Ambient temperature T
a
(C)
B=<10mT
T
a
=25C
0
0
16
4
8
12
20
10
8
6
4
2
Supply current I
CC
(mA)
Supply voltage V
CC
(V)
V
CC
=5V
B=<10mT
0
-40
120
0
40
80
10
8
6
4
2
Supply current I
CC
(mA)
Ambient temperature T
a
(C)
V
CC
=16V
B>=30mT
T
a
=25C
0
0
4
1
2
3
5
0.5
0.4
0.3
0.2
0.1
Low level output voltage V
OL
(V)
Output current I
O
(mA)
V
CC
=16V
I
O
=4mA
B>=30mT
0
80
-40
0
40
120
0.5
0.4
0.3
0.2
0.1
Low level output voltage V
OL
(V)
Ambient temperature T
a
(C)
LT230A
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