US5781EUA Melexis Inc, US5781EUA Datasheet - Page 6
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US5781EUA
Manufacturer Part Number
US5781EUA
Description
IC HALL EFFECT SWITCH TO-92UA
Manufacturer
Melexis Inc
Type
Unipolar Switchr
Specifications of US5781EUA
Sensing Range
15mT Trip, 3.5mT Release
Voltage - Supply
3.5 V ~ 24 V
Current - Supply
5mA
Current - Output (max)
50mA
Output Type
Digital, Open Drain
Operating Temperature
-40°C ~ 85°C
Package / Case
TO-92UA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Features
-
Proximity Switch
The proximity configuration is the simplest, though it requires the greatest amount of physical movement. It
is also less precise in terms of the position that results in turning the sensor ON and OFF. The magnetic field
intensity is greatest when the magnet is against the branded face of the Hall IC and decreases exponentially as
the magnet is moved away.
Figure 3, Proximity Switch
In Figure 3A, the South magnetic pole is close to the Hall IC, so the switch turns ON. In Figure 3B, the
South magnetic pole has moved too far away, so the switch turns OFF.
Section 3 - Applications
1400
1200
1000
800
600
400
200
0
0
Linear Slide-By, Alnico8
100
Distance in mils (thousands of inch)
200
300
N
S
400
A-06
Figure 3A
500
3-4
600
Head On Gauss
N
S
Figure 3B
A-05