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Электронный компонент: 3177

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These Hall-effect latches are temperature-stable and stress-resistant
sensors especially suited for electronic commutation in brushless dc
motors using multipole ring magnets. Each device includes a voltage
regulator, quadratic Hall voltage generator, temperature compensation
circuit, signal amplifier, Schmitt trigger, and an open-collector output on
a single silicon chip. The on-board regulator permits operation with
supply voltages of 4.5 volts to 18 volts. The switch output can sink
10 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 surface-mount SOT89/
TO-243AA package; suffixe `UA' features wire leads for through-hole
mounting.
HALL-EFFECT LATCHES
Always order by complete part number, e.g.,
UGN3175LT .
See Magnetic Characteristics table for differences between devices.
Data Sheet
27609.4C
FEATURES
s Symmetrical Response
s 4.5 V to 18 V Operation
s Open-Collector Output
s Reverse Battery Protection
s Activate With Small, Commercially Available Permanent Magnets
s Solid-State Reliability
s Small Size
s Superior Temperature Stability
s Resistant to Physical Stress
ABSOLUTE MAXIMUM RATINGS
Supply Voltage, V
CC
. . . . . . . . . . . . . 18 V
Reverse Battery Voltage, V
RCC
. . . . -18 V
Magnetic Flux Density, B . . . . Unlimited
Output OFF Voltage, V
OUT
. . . . . . . . 18 V
Continuous Output Current, I
OUT
. 15 mA
Operating Temperature Range,
T
A
. . . . . . . . . . . . . . . -20
C to +85
C
Storage Temperature Range,
T
S
. . . . . . . . . . . . . . . -65
C to +150
C
Pinning is shown viewed from branded side.
3175
AND
3177
Dwg. PH-003A
1
SUPPLY
V
CC
GROUND
3
2
OUTPUT
X
3175
AND
3177
HALL-EFFECT
LATCHES
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
FUNCTIONAL BLOCK DIAGRAM
NOTE: As used here, negative flux densities are defined as less than zero (algebraic convention).
Complete part number includes a suffix denoting package type (LT or UA).
T
A
= +25
C
T
A
= -20
C to +85
C
Characteristic
Min.
Typ.
Max.
Min.
Typ.
Max.
Operate Point, B
OP
UGN3175
25
--
170
15
--
180
UGN3177
50
--
150
25
--
150
Release Point, B
RP
UGN3175
-170
--
-25
-180
--
-15
UGN3177
-150
--
-50
-150
--
-25
Hysteresis, B
hys
UGN3175
100
200
--
80
180
--
UGN3177
100
200
--
50
180
--
V
CC
X
REG.
Dwg. FH-005-2
GROUND
OUTPUT
3
2
1
Part
Number*
Limits
Characteristic
Symbol
Test Conditions
Min.
Typ.
Max.
Units
Supply Voltage
V
CC
Operating
4.5
--
18
V
Output Saturation Voltage
V
OUT(SAT)
V
CC
= 18 V, I
OUT
= 10 mA, B > B
OP
--
200
300
mV
Output Leakage Current
I
OFF
V
OUT
= 18 V, B < B
RP
--
0.05
5.0
A
Supply Current
I
CC
V
CC
= 4.5 V, B < B
RP
(Output OFF)
--
5.0
10
mA
Output Rise Time
t
r
V
CC
= 12 V, R
L
= 1.1 k
, C
L
= 20 pF
--
0.04
2.0
s
Output Fall Time
t
f
V
CC
= 12 V, R
L
= 1.1 k
, C
L
= 20 pF
--
0.18
2.0
s
ELECTRICAL CHARACTERISTICS at T
A
= +25
C, V
CC
= 4.5 V to 18 V (unless otherwise noted).
MAGNETIC CHARACTERISTICS in gauss; V
CC
= 4.5 V to 18 V.
Copyright 1991, 2002 Allegro MicroSystems, Inc.
3175
AND
3177
HALL-EFFECT
LATCHES
www.allegromicro.com
TYPICAL OPERATING CHARACTERISTICS
Suffix "UA"
-10
10
30
50
90
AMBIENT TEMPERATURE IN



C
-30
Dwg. GH-020
SWITCH POINT IN GAUSS
0
100
200
-100
-200
70
V = 14 V
CC
OPERATE POINT
RELEASE POINT
1
3
2
Dwg. MH-011C
0.0195"
0.50 mm
NOM
BRANDED
SURFACE
ACTIVE AREA DEPTH
0.083"
2.12 mm
0.055"
1.39 mm
A
Suffix "LT"
0.045"
1.15 mm
1
3
2
Dwg. MH-008-1C
0.0305"
0.775 mm
NOM
ACTIVE AREA DEPTH
0.090"
2.30 mm
A
SENSOR LOCATIONS
(
0.005" [0.13mm] die placement)
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.
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 responsi-
bility for its use; nor for any infringements of patents or other rights of
third parties that may result from its use.
3175
AND
3177
HALL-EFFECT
LATCHES
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000
PACKAGE DESIGNATOR `LT'
(SOT89/TO-243AA)
Dimensions in Inches
(for reference only)
Dimensions in Millimeters
(controlling dimensions)
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.
Dwg. MA-009-3A in
1
2
3
0.072
0.064
0.167
0.155
0.059
BSC
0.0189
0.0142
0.047
0.035
0.102
0.090
0.063
0.055
0.0173
0.0138
0.090
0.084
0.0221
0.0173
0.118
BSC
0.181
0.173
Dwg. MA-009-3A mm
1
2
3
4.60
4.40
1.83
1.62
4.25
3.94
1.50
BSC
0.48
0.36
1.20
0.89
2.60
2.29
1.60
1.40
0.44
0.35
2.29
2.13
0.56
0.44
3.00
BSC
1
B
0.098
0.031
0.102
0.047
0.181
0.079
Dwg. MA-012-3 in
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
2
0.028
TYP
0.031
TYP
A
3
1
3
B
2.5
0.8
2.6
1.2
4.6
2.0
Dwg. MA-012-3 mm
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
2
0.7
TYP
0.8
TYP
A
3175
AND
3177
HALL-EFFECT
LATCHES
www.allegromicro.com
Dimensions in Inches
(controlling dimensions)
Dimensions in Millimeters
(for reference only)
PACKAGE DESIGNATOR `UA'
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.
3.
Height does not include mold gate flash.
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).
Dwg. MH-014E in
0.164
0.159
0.062
0.058
0.0173
0.0138
0.050
BSC
45
0.640
0.600
0.0189
0.0142
0.085
MAX
45
0.031
1
2
3
0.122
0.117
SEE NOTE
Dwg. MH-014E mm
4.17
4.04
1.57
1.47
0.44
0.35
1.27
BSC
45
16.26
15.24
0.48
0.36
2.16
MAX
45
0.79
1
2
3
3.10
2.97
SEE NOTE
Radial Lead Form (order A317xxUA-LC)
NOTE:
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).
0.620"
0.500"
(15.7 mm
12.7 mm)
0.100"
(2.5 mm)
Dwg. MH-026
0.108"
(2.74 mm)
1
2
3