US5881LSO Melexis Inc, US5881LSO Datasheet - Page 16

IC HALL EFFECT SW SOT-23

US5881LSO

Manufacturer Part Number
US5881LSO
Description
IC HALL EFFECT SW SOT-23
Manufacturer
Melexis Inc
Type
Unipolar Switchr
Datasheets

Specifications of US5881LSO

Rohs Status
RoHS non-compliant
Sensing Range
30mT Trip, 9.5mT Release
Voltage - Supply
3.5 V ~ 24 V
Current - Supply
5mA
Current - Output (max)
50mA
Output Type
Digital, Open Drain
Operating Temperature
-40°C ~ 150°C
Package / Case
SOT-23
Features
-
Other names
US5881LSOTR

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Choosing A Magnet
Common Magnetic Materials
There are four classes of commercial permanent magnet materials. They are:
Ceramic
Alnico
Neodymium Iron Boron
Samarium Cobalt
Depending on the application at hand, the use of one material over another may have its benefits. The two
sample magnets provided with The Melexis Hall Effect Sensor Design Kit are both Neodymium 35 mag-
nets. They have very high flux densities for their size and should be handled with caution. These magnets
have been provided to assist in the design and construction of a Hall Effect Sensor System. The square
magnet will be referred to as magnet A, while the cylindrical magnet will be referred to as magnet B.
Graphs 1 through 4 are constructed using magnets A and B. South poles are marked with a do of red paint.
Melexis provides two types of neodymium magnets in the design kit chosen for low cost and high perfor-
0
mance, up to80
C. Neodymium is preferred for small-size magnets typically used with Hall ICs. If larger
magnet sizes or higher temperature ranges are necessary, Alnico or ceramic would be a better choice of
material.
Figure 11, Sample Magnets
N
S
S
dia 9.5mm
10.0mm
4.4mm
3.0mm
4.6mm
A-15
Magnet A, Square
Magnet B, Cylindrical
Section 3 - Applications
3-8

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