|
Details, datasheet, quote on part number:3175
| |
Datasheet text preview:
3175 AND 3177
HALL-EFFECT LATCHES
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.
Data Sheet 27609.4C
V
X
CC
1
2
3
GROUND
OUTPUT
SUPPLY
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
Dwg. PH-003A
Pinning is shown viewed from branded side.
ABSOLUTE MAXIMUM RATINGS
Supply Voltage, VCC . . . . . . . . . . . . . 18 V Reverse Battery Voltage, VRCC . . . . -18 V Magnetic Flux Density, B . . . . Unlimited Output OFF Voltage, VOUT . . . . . . . . 18 V Continuous Output Current, IOUT . 15 mA Operating Temperature Range, TA . . . . . . . . . . . . . . . -20°C to +85°C Storage Temperature Range, TS . . . . . . . . . . . . . . . -65°C to +150°C
Always order by complete part number, e.g., UGN3175LT . See Magnetic Characteristics table for differences between devices.
3175 AND 3177 HALL - EFFECT LATCHES
FUNCTIONAL BLOCK DIAGRAM
1
VCC
REG.
X
3
OUTPUT GROUND
2
Dwg. FH-005-2
ELECTRICAL CHARACTERISTICS at TA = +25°C, VCC = 4.5 V to 18 V (unless otherwise noted).
Limits Characteristic Supply Voltage Output Saturation Voltage Output Leakage Current Supply Current Output Rise Time Output Fall Time Symbol VC C VO U T ( S A T ) I OFF I CC tr tf Test Conditions Operating VCC = 18 V, IOUT = 10 mA, B > BOP VOUT = 18 V, B < BRP VCC = 4.5 V, B < BRP (Output OFF) VCC = 12 V, RL = 1.1 k, CL = 20 pF VCC = 12 V, RL = 1.1 k, CL = 20 pF Min. 4.5 -- -- -- -- -- Typ. -- 200 0.05 5.0 0 .04 0 .18 Max. 18 300 5.0 10 2.0 2.0 Units V mV µA mA µs µs
MAGNETIC CHARACTERISTICS in gauss; VCC = 4.5 V to 18 V.
Characteristic Operate Point, BOP Part Number* UGN3175 UGN3177 Release Point, BRP UGN3175 UGN3177 H y s t e r e s i s , B hys UGN3175 UGN3177 TA = +25°C Min. 25 50 -170 -150 100 100 Typ. -- -- -- -- 200 200 Max. 170 150 -25 -50 -- -- Min. 15 25 -180 -150 80 50 TA = -20°C to +85°C Typ. -- -- -- -- 180 180 Max. 180 150 -15 -25 -- --
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).
115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 Copyright © 1991, 2002 Allegro MicroSystems, Inc.
3175 AND 3177 HALL - EFFECT LATCHES
SENSOR LOCATIONS
(±0.005" [0.13mm] die placement) Suffix "LT"
ACTIVE AREA DEPTH 0.0305" 0.775 mm NOM 0.090" 2.30 mm 0.045" 1.15 mm
SWITCH POINT IN GAUSS
100 200
TYPICAL OPERATING CHARACTERISTICS
OPERATE POINT
V 0
CC
= 14 V
A
1 2 3
-100
RELEASE POINT
-200
Dwg. MH-008-1C
-30
-10
10
30
50
70
90
AMBIENT TEMPERATURE IN °C
Suffix "UA"
ACTIVE AREA DEPTH 0.0195" 0.50 mm NOM
Dwg. GH-020
0.083" 2.12 mm
A
BRANDED SURFACE 1 2 3
0.055" 1.39 mm
Dwg. MH-011C
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 responsibility for its use; nor for any infringements of patents or other rights of third parties that may result from its use.
www.allegromicro.com
3175 AND 3177 HALL - EFFECT LATCHES
PACKAGE DESIGNATOR `LT'
(SOT89/TO-243AA) Dimensions in Inches (for reference only) Dimensions in Millimeters (controlling dimensions)
0.181 0.173 0.072 0.064 0.167 0.155 0.102 0.090
0.063 0.055
0.0173 0.0138
4.60 4.40 1.83 1.62 4.25 3.94 2.60 2.29
1.60 1.40
0.44 0.35
1
2
3
0.090 0.084
1
2
3
2.29 2.13
0.047 0.035 0.059
BSC
0.0189 0.0142 0.0221 0.0173 0.118
BSC
Dwg. MA-009-3A in
1.20 0.89 1.50
BSC
0.48 0.36 0.56 0.44 3.00
BSC
Dwg. MA-009-3A mm
0.098 0.079 B A 0.031 0.102 0.181 3 0.047 0.031
TYP
2.5 2.0 B A 0.8 2.6 4.6 1.2 0.8
TYP
1 0.028
TYP
2
1 0.7
TYP
2
3
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
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.
115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000
3175 AND 3177 HALL - EFFECT LATCHES
PACKAGE DESIGNATOR `UA'
Dimensions in Inches (controlling dimensions)
0.164 0.159
Dimensions in Millimeters (for reference only)
4.17 4.04
45°
0.062 0.058
45°
1.57 1.47
0.122 0.117
45° 0.031
3.10 2.97
45° 0.79
0.085
MAX
1
2
3
2.16
MAX
1
2
3
0.640 0.600
0.0173 0.0138
16.26 15.24
0.44 0.35
SEE NOTE
0.0189 0.0142
SEE NOTE
0.48 0.36
0.050
BSC
Dwg. MH-014E in
1.27
BSC
Dwg. MH-014E mm
Radial Lead Form (order A317xxUA-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. 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).
1
2
3
0.620" 0.500" (15.7 mm 12.7 mm)
0.108" (2.74 mm)
0.100" (2.5 mm)
Dwg. MH-026
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).
www.allegromicro.com
|
|
