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PDF A3134 Data sheet ( Hoja de datos )

Número de pieza A3134
Descripción BIPOLAR HALL-EFFECT SWITCH FOR HIGH-TEMPERATURE OPERATION
Fabricantes Allegro MicroSystems 
Logotipo Allegro MicroSystems Logotipo



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3134
BIPOLAR HALL-EFFECT SWITCH
FOR HIGH-TEMPERATURE OPERATION
V
CC
12
3
Dwg. PH-003A
Pinning is shown viewed from branded side.
This low-hysteresis bipolar Hall-effect switch is an extremely
temperature-stable and stress-resistant sensor especially suited for
operation over extended temperature ranges to +150°C. Superior
high-temperature performance is made possible through a novel Schmitt
trigger circuit that maintains operate and release point stability by
compensating for temperature changes in the Hall element. Additionally,
internal compensation provides magnetic switch points that become more
sensitive with temperature, hence offsetting the usual degradation of the
magnetic field with temperature. Its low hysteresis makes this device
ideal for detecting small changes in magnetic field strength or for use
with inexpensive magnets.
The device includes on a single silicon chip a voltage regulator,
quadratic Hall-voltage generator, temperature compensation circuit,
signal amplifier, Schmitt trigger, and a buffered open-collector output to
sink up to 25 mA. The on-board regulator permits operation with supply
voltages of 4.5 volts to 24 volts.
The first character of the part number suffix determines the device
operating temperature range. Suffix ‘E–’ is for -40°C to +85°C, and
suffix ‘L–’ is -40°C to +150°C. Two package styles provide a magneti-
cally optimized package for most applications. Suffix ‘–LT’ is a minia-
ture SOT89/TO-243AA transistor package for surface-mount applica-
tions while suffix ‘–UA’ is a three-lead ultra-mini-SIP.
ABSOLUTE MAXIMUM RATINGS
at TA = +25°C
Supply Voltage, VCC ............................. 30 V
Reverse Battery Voltage, VRCC .......... -30 V
Magnetic Flux Density, B .......... Unlimited
Output OFF Voltage, VOUT .................. 30 V
Reverse Output Voltage, VOUT ........... -0.5 V
Continuous Output Current,
IOUT ............................................ 25 mA
Operating Temperature Range, TA
Suffix ‘E–’ .................. -40°C to +85°C
Suffix ‘L–’ ................ -40°C to +150°C
Storage Temperature Range,
TS .............................. -65°C to +170°C
FEATURES
s Superior Temperature Stability
s Operation From Unregulated Supply
s Open-Collector 25 mA Output
s Reverse Battery Protection
s Activate With Small, Commercially Available Permanent Magnets
s Solid-State Reliability
s Small Size
s Resistant to Physical Stress
Always order by complete part number, e.g., A3134ELT .

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A3134 pdf
3134
LOW-HYSTERESIS
BIPOLAR HALL-EFFECT SWITCH
FOR HIGH-TEMP. OPERATION
PACKAGE DESIGNATOR ‘LT’
(SOT89/TO-243AA)
Dimensions in Inches
(for reference only)
Dimensions in Millimeters
(controlling dimensions)
0.167
0.155
0.181
0.173
0.072
0.064
0.102
1 2 3 0.090
0.047
0.035
0.059
BSC
0.0189
0.0142
0.0221
0.0173
0.118
BSC
0.063
0.055
0.090
0.084
0.0173
0.0138
Dwg. MA-009-3A in
4.25
3.94
4.60
4.40
1.83
1.62
2.60
1 2 3 2.29
1.20
0.89
1.50
BSC
0.48
0.36
0.56
0.44
3.00
BSC
1.60
1.40
2.29
2.13
0.44
0.35
Dwg. MA-009-3A mm
0.098
0.079
B
A
0.031
0.102
0.181
1 2 3 0.047
0.028
TYP
0.031
TYP
Pads 1, 2, 3, and A Standard SOT89 Layout
Pads 1, 2, 3, and B Low-Stress Version
Pads 1, 2, and 3 only Lowest Stress, But Not Self Aligning
Dwg. MA-012-3 in
2.5
2.0
B
A
0.8
2.6
4.6
1 2 3 1.2
0.7 0.8
TYP TYP
Pads 1, 2, 3, and A Standard SOT89 Layout
Pads 1, 2, 3, and B Low-Stress Version
Pads 1, 2, and 3 only Lowest Stress, But Not Self Aligning
Dwg. MA-012-3 mm
NOTES: 1. Exact body and lead configuration at vendor’s option within limits shown.
2. Supplied in bulk pack (500 pieces per bag) or add "TR" to part number for tape and reel.
3. Only low-temperature (240°C) reflow-soldering techniques are recommended for SOT89 devices.
www.allegromicro.com

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