3121, 3122, AND 3123
HALL-EFFECT SWITCHES
FOR HIGH-TEMPERATURE
OPERATION
TYPICAL OPERATING CHARACTERISTICS
SWITCH POINTS
OUTPUT SATURATION VOLTAGE
400
300
200
I
= 20 mA
OUT
OPERATE POINT
V
= 4.5–24 V
CC
RELEASE POINT
V
= 12 V
CC
100
0
150
100
125
-50
-25
0
25
50
75
100
125
150
-50
-25
0
25
50
75
AMBIENT TEMPERATURE IN °C
AMBIENT TEMPERATURE IN °C
Dwg. GH-040
Dwg. GH-038
SUPPLY CURRENT
SUPPLY CURRENT
7.0
6.0
5.0
4.0
10
V
= 12 V
CC
8.0
6.0
4.0
B ≥ B
OP
B ≥ B
OP
B ≤ B
RP
T
= +25°C
2.0
0
A
B ≤ B
RP
125
150
100
-50
-25
0
25
50
75
0
5
10
15
20
25
AMBIENT TEMPERATURE IN °C
SUPPLY VOLTAGE IN VOLTS
Dwg. GH-041
Dwg. GH-039
* Complete part number includes a suffix denoting operating temperature range (E- or L-) and package type ( -LT, -U, or -UA).
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