US3881EUA Melexis Inc, US3881EUA Datasheet - Page 31
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US3881EUA
Manufacturer Part Number
US3881EUA
Description
IC HALL ELFFECT SW MP TO-92UA
Manufacturer
Melexis Inc
Type
Digital Latchr
Specifications of US3881EUA
Sensing Range
9mT Trip, -9mT Release
Voltage - Supply
2.2 V ~ 18 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
-
Other names
Q3906089
Applications
Balance, Level, Vibration, Acceleration
A magnet suspended from a pendulum, free to move in the X - Y plane, may be used to detect level posi-
tion, acceleration and vibration. Figure 12 shows a magnet with the center as a North pole and an outer
ring of South pole. In a level, stable condition, the North pole turns OFF the switch. Motion will cause
the magnet to move in such a way that the South pole is over the Hall IC, turning the switch ON.
Obviously, the mechanical configuration is not trivial, and will vary greatly depending on the application.
Switches like this are used in some washing machines.
Figure 17, Level and Motion Switch
S
S
S
N
S
A-18
The magnet is free to move relative to the Hall IC.
Any force disturbing the magnet may result in a South pole
facing the Hall IC, resulting in an ON condition
Section 3 - Applications
3-17