US5881ESE Melexis Inc, US5881ESE Datasheet - Page 9
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US5881ESE
Manufacturer Part Number
US5881ESE
Description
IC HALL EFFECT SW TSOT-23
Manufacturer
Melexis Inc
Type
Unipolar Switchr
Specifications of US5881ESE
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
Features
Regulated Voltage
Operating Temperature
-40°C ~ 85°C
Package / Case
TO-236-3, SC-59, SOT-23-3
Other names
US5881ESETR
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
US5881ESE-AAA-000-RE
Manufacturer:
MELEXIS/迈来芯
Quantity:
20 000
R
Figure 7, Rotary Slide-by Switch
The Rotary Slide-by Switch in Figure 7 is generally used to measure rotary speed to synchronize switch-
ing with position. The Hall IC is activated by a rotating magnet. When the South pole passes by the Hall
IC, the IC is switched ON. As the North pole passes, the Hall IC is switched OFF. The solid circular mag-
net, shown in Figure 7A, is called a Ring Magnet. A ring magnet has alternating North and South poles.
Ring magnets may have from two poles to thirty-six or more, depending on size. Graph 1, below illus-
trates the transition between North and South polarity at various air gaps. Notice the transition point is
similar at the various gaps.
Graph 1, Rotary Slide-by vs. Air gap
otary Slide-by Switch
N
-100
-150
150
100
-50
50
0
0
S
Figure 7A
50
N
100
A-11
S
Rotation in Degrees
150
3-7
6 Pole Ring Magnet
200
250
300
Section 3 - Applications
350
400
S
Figure 7B
0 Airgap
0.025" airgap
0.050" Airgap
0.100" Airgap
0.150" airgap
A-12
N