A3132 and A3133: Ultrasensitive Bipolar Hall-Effect Switches

A3132 and A3133
Ultrasensitive Bipolar Hall Effect Switches
Discontinued Product
These parts are no longer in production The device should not be
purchased for new design applications. Samples are no longer available.
Date of status change: October 31, 2005
Recommended Substitutions:
For new customers and applications:
• for the A3132 refer to the A1203
• for the A3133 refer to the A1202
NOTE: For detailed information on purchasing options, contact your
local Allegro field applications engineer or sales representative.
Allegro MicroSystems, Inc. reserves the right to make, from time to time, revisions to the anticipated product life cycle plan for a
product to accommodate changes in production capabilities, alternative product availabilities, or market demand. 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.
Data Sheet
27631.2C
3132 AND
3133
ULTRA-SENSITIVE BIPOLAR
HALL-EFFECT SWITCHES
X
These Hall-effect switches are designed for magnetic actuation using
a bipolar magnetic field, i.e., a north-south alternating field. They
combine extreme magnetic sensitivity with excellent stability over
varying temperature and supply voltage. The high sensitivity permits
their use with multi-pole ring magnets over relatively large distances.
2
3
OUTPUT
1
GROUND
CC
SUPPLY
V
Each device includes a voltage regulator, quadratic Hall voltage
generator, temperature stability circuit, signal amplifier, Schmitt trigger,
and open-collector output on a single silicon chip. The on-board regulator permits operation with supply voltages of 4.5 to 24 V. The switch
output can sink up to 25 mA. With suitable output pull up, they can be
used directly with bipolar or MOS logic circuits.
The three package styles available provide a magnetically optimized
package for most applications. Suffix ‘LT’ is a miniature SOT89/TO243AA transistor package for surface-mount applications; suffix ‘UA’
features wire leads for through-hole mounting. Prefix ‘UGN’ devices
are rated for continuous operation over the temperature range of -20°C to
+85°C, prefix ‘UGS’ devices over an extended range of -40°C to
+125°C, and prefix ‘UGL’ devices over the range of -40°C to +150°C.
FEATURES
Dwg. PH-003A
Pinning is shown viewed from branded side.
■ 4.5 V to 24 V Operation
■ Reverse Battery Protection
■ Superior Temperature Stability
■ Superior Supply Voltage Stability
ABSOLUTE MAXIMUM RATINGS
Supply Voltage, VCC . . . . . . . . . . . . . 25 V
Reverse Battery Voltage, VRCC . . . . -35 V
Magnetic Flux Density, B . . . . Unlimited
Output OFF Voltage, VOUT . . . . . . . . 25 V
Continuous Output Current, IOUT . 25 mA
Operating Temperature Range, TA
Prefix UGL . . . . . . . -40°C to +150°C
Prefix UGN . . . . . . . . -20°C to +85°C
Prefix UGS . . . . . . . -40°C to +125°C
Storage Temperature Range,
TS . . . . . . . . . . . . . . . -65°C to +150°C
■ Activate with Multi-Pole Ring Magnets
■ Solid-State Reliability
■ Small Size
■ Constant Output Amplitude
■ Resistant to Physical Stress
Always order by complete part number
including prefix and suffix, e.g., UGN3132LT .
3132 AND 3133
BIPOLAR
HALL-EFFECT SWITCHES
FUNCTIONAL BLOCK DIAGRAM
1
VCC
REG.
X
3
OUTPUT
2
GROUND
Dwg. FH-005-2
ELECTRICAL CHARACTERISTICS at TA = +25°C
Limits
Characteristic
Symbol
Supply Voltage
VCC
Min.
Typ.
Max.
Units
Operating
4.5
—
24
V
VOUT(SAT)
IOUT = 20 mA, B ≥ BOP
—
145
400
mV
Output Leakage Current
IOFF
VOUT = 24 V, B ≤ BRP
—
<1.0
10
µA
Supply Current
ICC
VCC = 24 V, B ≤ BRP
—
4.3
9.0
mA
Output Saturation Voltage
Test Conditions
Output Rise Time
tr
VCC = 12 V, RL = 820 Ω, CL = 20 pF
—
0.04
2.0
µs
Output Fall Time
tf
VCC = 12 V, RL = 820 Ω, CL = 20 pF
—
0.18
2.0
µs
MAGNETIC CHARACTERISTICS over operating temperature and voltage range.
Limits
Characteristic
Symbol
Operate Point
BOP
Release Point
Hysteresis
BRP
Bhys
Device Type*
Min.
Typ.
Max.
Units
3132
—
32
95
G
3133
—
32
75
G
3132
-95
-20
—
G
3133
-75
-20
—
G
Both
30
52
—
G
NOTE: As used here, negative flux densities are defined as less than zero (algebraic convention.)
Typical values are at TA = +25°C and VCC = 12 V.
1 gauss (G) is exactly equal to 0.1 millitesla (mT).
*
Complete part number includes a prefix denoting operating temperature range (UGL, UGN, or UGS)
and a suffix denoting package type (LT or UA).
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
Copyright © 1996, 2003 Allegro MicroSystems, Inc.
3132 AND 3133
BIPOLAR
HALL-EFFECT SWITCHES
TYPICAL CHARACTERISTICS
40
40
OPERATE POINT
OPERATE POINT
20
SWITCH POINT IN GAUSS
SWITCH POINT IN GAUSS
20
VCC = 12 V
0
I OUT = 20 mA
RELEASE POINT
-20
T A = 25°C
0
I OUT = 20 mA
-20
RELEASE POINT
-40
-50
-25
0
25
50
75
AMBIENT TEMPERATURE IN ° C
-40
4.0
125
100
8.0
12
16
SUPPLY VOLTAGE IN VOLTS
Dwg. GH-022
Dwg. GH-021
6.0
200
I OUT = 20 mA
VCC = 12 V
SUPPLY CURRENT IN mA
SATURATION VOLTAGE IN mV
B ≥ B OP
175
150
5.0
4.0
B ≤ B RP
125
100
-50
28
24
20
-25
0
25
50
75
100
125
-25
0
25
50
75
AMBIENT TEMPERATURE IN ° C
AMBIENT TEMPERATURE IN ° C
Dwg. GH-024
Powering up in the absence of a magnetic field (less than
BOP and higher than BRP) will allow an indeterminate output
state. The correct state is warranted after the first excursion
beyond BOP or BRP.
www.allegromicro.com
3.0
-50
100
125
Dwg. GH-023
Bipolar switches may switch on removal of field but
require field reversal for reliable operation over temperature
range; latches will not switch on removal of magnetic field.
3132 AND 3133
BIPOLAR
HALL-EFFECT SWITCHES
ELEMENT LOCATIONS
(±0.005” [0.13mm] die placement)
SUFFIX “LT”
ACTIVE AREA DEPTH
0.0305"
0.775 mm
NOM
0.089"
2.26 mm
0.043"
1.09 mm
A
1
2
3
Dwg. MH-008-2D
SUFFIX “UA”
ACTIVE AREA DEPTH
0.0195"
0.50 mm
NOM
0.082"
2.07 mm
0.055"
1.39 mm
A
BRANDED
SURFACE
The products described herein are manufactured under one or
more of the following U.S. patents: 5,045,920; 5,264,783; 5,442,283;
5,389,889; 5,581,179; 5,517,112; 5,619,137; 5,621,319; 5,650,719;
5,686,894; 5,694,038; 5,729,130; 5,917,320; and other patents
pending.
1
2
3
Dwg. MH-011-10A
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 performance, reliability, or
manufacturability of its products. Before placing an order, the user is
cautioned to verify that the information being relied upon is current.
Allegro products are not authorized for use as critical components
in life-support appliances, devices, or systems without express written
approval.
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 that may result from its use.
Allegro
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
3132 AND 3133
BIPOLAR
HALL-EFFECT SWITCHES
PACKAGE DESIGNATOR ‘LT’
(SOT89/TO-243AA)
Dimensions in Inches
(for reference only)
0.181
0.173
0.072
0.064
0.167
0.155
1
2
0.063
0.055
0.102
0.090
3
Dimensions in Millimeters
(controlling dimensions)
0.0173
0.0138
0.090
0.084
4.25
3.94
0.0189
0.0142
0.0221
0.0173
0.047
0.035
0.059
4.60
4.40
1.83
1.62
3.00
BSC
Dwg. MA-009-3A in
Dwg. MA-009-3A mm
2.5
2.0
0.098
0.079
B
B
0.031
0.102
A
0.8
2.6
A
4.6
0.181
1
2
2.29
2.13
0.56
0.44
1.50
0.118
BSC
2.60
2.29
3
0.44
0.35
0.48
0.36
1.20
0.89
BSC
BSC
2
1
1.60
1.40
3 0.047
1
2
3
1.2
0.028
0.031
0.7
0.8
TYP
TYP
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
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
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.
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3132 AND 3133
BIPOLAR
HALL-EFFECT SWITCHES
PACKAGE DESIGNATOR ‘UA’
Dimensions in Millimeters
(for reference only)
Dimensions in Inches
(controlling dimensions)
0.164
0.159
4.17
4.04
0.062
0.058
45°
1.57
1.47
45°
0.122
0.117
3.10
2.97
45°
0.085
1
2
3
45°
0.031
2.16
MAX
1
2
0.79
3
MAX
0.0173
0.0138
0.640
0.600
0.0189
0.0142
SEE NOTE
0.44
0.35
16.26
15.24
0.48
0.36
SEE NOTE
0.050
BSC
1.27
BSC
Dwg. MH-014E in
Dwg. MH-014E mm
Radial Lead Form (order UGx313xUA-LC)
NOTES: 1. Tolerances on package height and width represent
allowable mold offsets. Dimensions given are measured at the
widest point (parting line).
2. Exact body and lead configuration at vendor’s option
within limits shown.
1
3. Height does not include mold gate flash.
2
3
0.108"
(2.74 mm)
0.620"
0.500"
(15.7 mm
12.7 mm)
4. Recommended minimum PWB hole diameter to clear
transition area is 0.035" (0.89 mm).
5. Where no tolerance is specified, dimension is nominal.
6. Supplied in bulk pack (500 pieces per bag).
0.100"
(2.5 mm)
NOTE:
Dwg. MH-026
Lead-form dimensions are the nominals produced on the forming
equipment. No dimensional tolerance is implied or guaranteed for
bulk packaging (500 pieces per bag).
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000