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3142

Description
SENSITIVE HALL-EFFECT SWITCHES FOR HIGH-TEMPERATURE OPERATION
File Size141KB,8 Pages
ManufacturerAllegro
Websitehttp://www.allegromicro.com/
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SENSITIVE HALL-EFFECT SWITCHES FOR HIGH-TEMPERATURE OPERATION

3141
THRU
3144
SENSITIVE HALL-EFFECT SWITCHES
FOR HIGH-TEMPERATURE OPERATION
These Hall-effect switches are monolithic integrated circuits with
tighter magnetic specifications, designed to operate continuously over
extended temperatures to +150°C, and are more stable with both
temperature and supply voltage changes. The unipolar switching
characteristic makes these devices ideal for use with a simple bar or rod
magnet. The four basic devices (3141, 3142, 3143, and 3144) are
identical except for magnetic switch points.
Each device includes a voltage regulator for operation with supply
voltages of 4.5 to 24 volts, reverse battery protection diode, quadratic
Hall-voltage generator, temperature compensation circuitry, small-
signal amplifier, Schmitt trigger, and an open-collector output to sink
up to 25 mA. With suitable output pull up, they can be used with
bipolar or CMOS logic circuits. The A3141– and A3142– are im-
proved replacements for the UGN/UGS3140–; the A3144– is the
improved replacement for the UGN/UGS3120–.
The first character of the part number suffix determines the device
operating temperature range. Suffix ‘E–’ is for the automotive and
industrial temperature range of -40°C to +85°C. Suffix ‘L–’ is for the
automotive and military temperature range of -40°C to +150°C. Three
package styles provide a magnetically optimized package for most
applications. Suffix ‘–LT’ is a miniature SOT89/TO-243AA transistor
package for surface-mount applications; suffix ‘–UA’ is a three-lead
ultra-mini-SIP.
Data Sheet
27621.6B*
V
X
CC
1
2
3
GROUND
Dwg. PH-003A
Pinning is shown viewed from branded side.
OUTPUT
SUPPLY
FEATURES and BENEFITS
ABSOLUTE MAXIMUM RATINGS
at T
A
= +25
°
C
Supply Voltage, V
CC
............................
28 V
Reverse Battery Voltage, V
RCC
...........
-35 V
Magnetic Flux Density, B ..........
Unlimited
Output OFF Voltage, V
OUT
..................
28 V
Reverse Output Voltage, V
OUT
...........
-0.5 V
Continuous Output Current, I
OUT
......
25 mA
Operating Temperature Range, T
A
Suffix ‘E–’ ..................
-40
°
C to +85
°
C
Suffix ‘L–’ ................
-40
°
C to +150
°
C
Storage Temperature Range,
T
S
..............................
-65
°
C to +170
°
C
s
s
s
s
s
s
s
s
Superior Temp. Stability for Automotive or Industrial Applications
4.5 V to 24 V Operation … Needs Only An Unregulated Supply
Open-Collector 25 mA Output … Compatible with Digital Logic
Reverse Battery Protection
Activate with Small, Commercially Available Permanent Magnets
Solid-State Reliability
Small Size
Resistant to Physical Stress
Always order by complete part number, e.g.,
A3141ELT
.
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