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A3141-UA 데이터시트 PDF




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부품번호 A3141-UA 기능
기능 SENSITIVE HALL-EFFECT SWITCHES FOR HIGH-TEMPERATURE OPERATION
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A3141-UA 데이터시트, 핀배열, 회로
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.
V
CC
12
3
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–.
Dwg. PH-003A
Pinning is shown viewed from branded side.
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 SOT-89/TO-243AA transis-
tor package for surface-mount applications; suffix ‘–U’ is a three-lead
plastic mini-SIP, while suffix ‘–UA’ is a three-lead ultra-mini-SIP.
ABSOLUTE MAXIMUM RATINGS
at TA = +25°C
Supply Voltage, VCC ............................ 28 V
Reverse
Battery
Voltage,
V
RCC
...........
-35
V
Magnetic Flux Density, B .......... Unlimited
Output OFF Voltage, V
OUT
..................
28 V
Reverse Output Voltage, VOUT ........... -0.5 V
Continuous Output Current, IOUT ...... 25 mA
Operating Temperature Range, T
A
Suffix ‘E–’ .................. -40°C to +85°C
Suffix ‘L–’ ................ -40°C to +150°C
Storage Temperature Range,
TS .............................. -65°C to +170°C
FEATURES and BENEFITS
I Superior Temp. Stability for Automotive or Industrial Applications
I 4.5 V to 24 V Operation … Needs Only An Unregulated Supply
I Open-Collector 25 mA Output … Compatible with Digital Logic
I Reverse Battery Protection
I Activate with Small, Commercially Available Permanent Magnets
I Solid-State Reliability
I Small Size
I Resistant to Physical Stress
Always order by complete part number, e.g., A3141ELT .




A3141-UA pdf, 반도체, 판매, 대치품
3141 THRU 3144
SENSITIVE
HALL-EFFECT SWITCHES
FOR HIGH-TEMP. OPERATION
SENSOR LOCATIONS
(±0.005” [0.13 mm] die placement)
Suffix “LT”
ACTIVE AREA DEPTH
0.030"
0.76 mm
NOM
0.089"
2.26 mm
A
0.043"
1.09 mm
12
3
Dwg. MH-008-2C
Suffix “U”
ACTIVE AREA DEPTH
0.016"
0.41 mm
NOM
0.091"
2.31 mm
0.070"
1.78 mm
A
BRANDED
SURFACE
1
2
3
Dwg. MH-002-2B
Suffix “UA”
ACTIVE AREA DEPTH
0.019"
0.48 mm
NOM
0.082"
2.07 mm
TYPICAL OPERATING CHARACTERISTICS (cont.)
CHANGE IN OPERATE POINT
20
15
TA = +25°C
10
5.0
0
-5.0
0
5 10 15
SUPPLY VOLTAGE IN VOLTS
20 25
Dwg. GH-042-1
OPERATION
The output of these devices (pin 3) switches low when the magnetic field
at the Hall sensor exceeds the operate point threshold (BOP). At this point, the
output voltage is VOUT(SAT). When the magnetic field is reduced to below the
release point threshold (BRP), the device output goes high. The difference in
the magnetic operate and release points is called the hysteresis (Bhys) of the
device. This built-in hysteresis allows clean switching of the output even in
the presence of external mechanical vibration and electrical noise.
A
BRANDED
SURFACE
1
2
0.055"
1.39 mm
3
Dwg. MH-011-10
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000

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A3141-UA 전자부품, 판매, 대치품
3141 THRU 3144
SENSITIVE
HALL-EFFECT SWITCHES
FOR HIGH-TEMP. OPERATION
PACKAGE DESIGNATOR ‘UA’
Dimensions in Inches
(controlling dimensions)
Dimensions in Millimeters
(for reference only)
0.164
0.159
0.062
45° 0.058
0.122
0.117
0.085 1 2 3 0.031
MAX
0.640
0.600
SEE NOTE
0.016
45°
0.015
0.050
BSC
Dwg. MH-014D in
4.17
4.04
45°
1.57
1.47
3.10
2.97
2.16 1 2 3 0.79
MAX
16.26
15.24
SEE NOTE
0.41
45°
0.38
1.27
BSC
Dwg. MH-014D mm
NOTES: 1.
2.
3.
Tolerances on package height and width represent allowable mold offsets. Dimensions given are
measured at the widest point (parting line).
Exact body and lead configuration at vendor’s option within limits shown.
Height does not include mold gate flash.
Allegro MicroSystems, Inc. reserves the right to make, from time to time,
such departures from the detail specifications as may be required to permit
improvements in the design of its products.
The information included herein is believed to be accurate and reliable.
However, Allegro MicroSystems, Inc. assumes no responsibility for its use;
nor for any infringements of patents or other rights of third parties which
may result from its use.

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