A3283LLT资料

3185 THRU3189HALL-EFFECT LATCHES

FOR HIGH-TEMPERATURE OPERATION

These Hall-effect latches are extremely temperature-stable and stress-resistant sensors especially suited for operation over extended temperatureranges to +150°C. Superior high-temperature performance is made possiblethrough a novel Schmitt trigger circuit that maintains operate and releasepoint symmetry by compensating for temperature changes in the Hall ele-ment. Additionally, internal compensation provides magnetic switch pointsthat become more sensitive with temperature, hence offsetting the usual

degradation of the magnetic field with temperature. The symmetry capabilitymakes these devices ideal for use in pulse-counting applications where dutycycle is an important parameter. The four basic devices (3185, 3187, 3188,and 3189) are identical except for magnetic switch points.

Each device includes on a single silicon chip a voltage regulator, qua-dratic Hall-voltage generator, temperature compensation circuit, signal

amplifier, Schmitt trigger, and a buffered open-collector output to sink up to25 mA. The on-board regulator permits operation with supply voltages of 3.8to 24 volts.

The first character of the part number suffix determines the deviceoperating temperature range. Suffix ‘E–’ is for -40°C to +85°C, and suffix‘L–’ is for -40°C to +150°C. Three package styles provide a magneticallyoptimized package for most applications. Suffix‘–LT’ is a miniature SOT-89/TO-243AA transistor package for surface-mount applications; suffix ‘–U’is a three-lead plastic mini-SIP, while suffix ‘–UA’ is a three-lead ultra-mini-SIP.

Data Sheet27609.2AVXCC123GROUNDDwg. PH-003APinning is shown viewed from branded side.ABSOLUTE MAXIMUM RATINGSat TA = +25°CSupply Voltage, VCC............................30 VReverse Battery Voltage, VRCC...........-30 VMagnetic Flux Density, B...........UnlimitedOutput OFF Voltage, VOUT..................30 VReverse Output Voltage, VOUT..........-0.5 VContinuous Output Current, IOUT.....25 mAOperating Temperature Range, TASuffix ‘E–’...................-40°C to +85°CSuffix ‘L–’.................-40°C to +150°CStorage Temperature Range,TS...............................-65°C to +170°COUTPUTSUPPLYFEATURES

I Symmetrical Switch PointsI Superior Temperature Stability

I Operation From Unregulated SupplyI Open-Collector 25 mA OutputI Reverse Battery Protection

I Activate With Small, Commercially Available Permanent MagnetsI Solid-State ReliabilityI Small Size

I Resistant to Physical Stress

Always order by complete part number: the prefix ‘A’ + the basic four-digitpart number + a suffix to indicate operating temperature range +a suffix to indicate package style, e.g., A3185ELT .元器件交易网www.cecb2b.com

3185 THRU 3189HALL-EFFECT LATCHESFOR HIGH-TEMPERATUREOPERATION

FUNCTIONAL BLOCK DIAGRAM1VCCREG.X3OUTPUTGROUND2Dwg. FH-005-3ELECTRICAL CHARACTERISTICS over operating temperature range, at VCC = 12 V.

Limits

CharacteristicSupply Voltage

Output Saturation VoltageOutput Leakage CurrentSupply Current

SymbolVCCVOUT(SAT)

IOFFICC

Test ConditionsOperating

IOUT = 20 mA, B > BOPVOUT = 24 V, B < BRPB < BRP (Output OFF)B > BOP (Output ON)

Output Rise TimeOutput Fall Time

trtf

RL = 820 Ω, CL = 20 pFRL = 820 Ω, CL = 20 pF

Min.3.8——————

Typ.—1750.054.755.7100100

Max.244005.08.0———

UnitsVmVµAmAmAnsns

MAGNETIC CHARACTERISTICS in gauss over operating supply voltage range.

Part Numbers*

A3185

CharacteristicBOP at TA = 25°C

over operating temp. rangeBRP at TA = 25°C

over operating temp. rangeBhys at TA = 25°C

over operating temp. range

Min.170140-270-300340280

Max.270300-170-140540600

A3187Min.5050-150-175100100

Max.150175-50-50300350

A3188Min.10080-180-200200160

Max.180200-100-80360400

A3189Min.5050-230-250100100

Max.230250-50-50460500

NOTES: BOP = operate point (output turns ON); BRP = release point (output turns OFF); Bhys = hysteresis (BOP - BRP).

As used here, negative flux densities are defined as less than zero (algebraic convention).

*Complete part number includes a suffix to identify operating temperature range (E or L) and package type ( LT, U, or UA).

115 Northeast Cutoff, Box 15036

Worcester, Massachusetts 01615-0036 (508) 853-5000Copyright © 1995, 1999, Allegro MicroSystems, Inc.

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3185 THRU 3189HALL-EFFECT LATCHESFOR HIGH-TEMPERATURE

OPERATION

TYPICAL OPERATING CHARACTERISTICS

A3185* SWITCH POINTS

300150A3187* SWITCH POINTS

200OPERATE POINT100OPERATE POINTSWITCH POINT IN GAUSS100SWITCH POINT IN GAUSS500V = 12 V CC0V = 12 V CC-100-50RELEASE POINT-100RELEASE POINT-200-300-50-250255075100125150Dwg. GH-026-150-50-250255075100125150AMBIENT TEMPERATURE IN °CAMBIENT TEMPERATURE IN °CDwg. GH-027OUTPUT SATURATION VOLTAGE

300SUPPLY CURRENT

7.0I = 20 mAOUTV = 4.5–24 VCCV = 12 VCCSATURATION VOLTAGE IN mVSUPPLY CURRENT IN mA2006.0B ≥ B OP1005.0B ≤ B RP0 -50-2502550751001251504.0-50-250255075100125150AMBIENT TEMPERATURE IN °CDwg. GH-029AMBIENT TEMPERATURE IN °CDwg. GH-028SUPPLY CURRENT10OPERATE POINT208.0CHANGE IN OPERATE POINT IN GAUSS15T = +25°CA10SUPPLY CURRENT IN mA6.0B ≥ B OPB ≤ B RP4.05.02.0T = +25°CA000510152025Dwg. GH-030-5.00510152025Dwg. GH-037SUPPLY VOLTAGE IN VOLTSSUPPLY VOLTAGE IN VOLTS* Complete part number includes a suffix denoting operating temperature range (E or L) and package type (LT, U, or UA).

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3185 THRU 3189HALL-EFFECT LATCHESFOR HIGH-TEMPERATUREOPERATION

(±0.005” [0.13 mm] die placement)Package Designators “LT”

ACTIVE AREA DEPTH0.030\"0.76 mmNOM0.090\"2.27 mm0.050\"1.27 mmSENSOR LOCATIONS

A123Dwg. MH-008-4BPackage Designator “U”

ACTIVE AREA DEPTH0.015\"0.38 mmNOM0.092\"2.33 mmVBB0.077\"1.96 mmOUTPUT VOLTAGE IN VOLTSBRPBOPABRANDEDSURFACE123VOUT(SAT)0-B0FLUX DENSITYDwg. MH-002-7B+BDwg. GH-034-4Package Designators “UA” and \"UA-TL\"

ACTIVE AREA DEPTH0.018\"0.46 mmNOM0.083\"2.10 mmThe simplest form of magnet that will operate these devices is a ringmagnet, as shown below. Other methods of operation are possible.

0.060\"1.51 mmABRANDEDSURFACE123Dwg. A-11,899

Dwg. MH-011-4BAlthough sensor location is accurate to threesigma for a particular design, product improve-ments may result in small changes to sensorlocation.

115 Northeast Cutoff, Box 15036

Worcester, Massachusetts 01615-0036 (508) 853-5000

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3185 THRU 3189HALL-EFFECT LATCHESFOR HIGH-TEMPERATURE

OPERATION

PACKAGE DESIGNATOR ‘U’

Dimensions in Inches(controlling dimensions)

Dimensions in Millimeters

(for reference only)

0.1830.1780.0630.0594.654.521.601.500.1810.17645°0.086MAX1234.604.4745°2.18MAX1230.0180.460.6000.5600.016SEE NOTE0.01515.2414.230.41SEE NOTE0.380.0500.100Dwg. MH-003D in1.272.54Dwg. MH-003D mmDevices in the ‘U’ package are

NOT RECOMMENDED FOR NEW DESIGN

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.Minimum lead length was 0.500\" (12.70 mm). If existing product to the original specifications is not acceptable,

contact sales office before ordering.

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3185 THRU 3189HALL-EFFECT LATCHESFOR HIGH-TEMPERATUREOPERATION

PACKAGE DESIGNATOR ‘UA’

Dimensions in Inches(controlling dimensions)

0.1640.159Dimensions in Millimeters

(for reference only)

4.174.0445°0.0620.05845°1.571.470.1220.11745°0.085MAX3.102.9745°2.16MAX1230.0311230.790.6400.6000.01516.2615.240.38SEE NOTE0.016SEE NOTE0.410.050BSCDwg. MH-014D in1.27BSCDwg. MH-014D mmSurface-Mount Lead Form (Suffix ‘-TL’)

0.095±0.0052.41±0.130.002MAX0.051MAX0.0040°–8°MAX0.020MINFLATDwg. MH-015 in0.10MAX0°–8°0.51MINFLATDwg. MH-015 mmNOTES: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.

115 Northeast Cutoff, Box 15036

Worcester, Massachusetts 01615-0036 (508) 853-5000

元器件交易网www.cecb2b.com

3185 THRU 3189HALL-EFFECT LATCHESFOR HIGH-TEMPERATURE

OPERATION

PACKAGE DESIGNATOR ‘LT’

(SOT-89/TO-243AA)Dimensions in Inches(for reference only)0.1730.1810.0640.0720.1550.1670.0900.1020.0550.0630.0140.0171230.0840.0900.0350.0470.059BSC0.0140.0190.0170.0220.118BSCDwg. MA-009-3 inDimensions in Millimeters(controlling dimensions)

4.404.601.621.833.944.252.292.601.401.600.350.441232.132.290.891.201.50BSC0.440.563.00BSC0.360.48Dwg. MA-009-3 mmNOTE: Exact body and lead configuration at vendor’s option within limits shown.

Allegro MicroSystems, Inc. reserves the right to make, from time totime, such departures from the detail specifications as may be requiredto permit improvements in the design of its products.

The information included herein is believed to be accurate andreliable. However, Allegro MicroSystems, Inc. assumes no responsi-bility for its use; nor for any infringements of patents or other rights ofthird parties which may result from its use.

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3185 THRU 3189HALL-EFFECT LATCHESFOR HIGH-TEMPERATUREOPERATION

HALL-EFFECT SENSORS SELECTION GUIDE

Partial PartNumber324032103361336231613141323551403142314331443122312331213150

Avail. Oper.Characteristics at TA = +25°CTemp.BOP(max)BRP(min)Bhys(typ)Features

HALL-EFFECT UNIPOLAR SWITCHES in order of BOP and BhysE/LEEEEE/LSEE/LE/LE/LE/LE/LE/LJ

+50±70+120+120+160+160+175-25+200+230+340+350+400+440+450+40 to +850

+5.0±5.0+50+50+30+10+25-175+50+75+165+50+140+180+125–

107.75.0*5.0*205515*15*5555555510510510520

chopper stabilized

micropower, chopper stabilized2-wire, chopper stabilized2-wire, chopper stabilized2-wireoutput 1output 2

300 mA output

Notes1

221, 3

programmable, chopper stabilized1

†HALL-EFFECT LATCHES & BIPOLAR SWITCHES in order of BOP and Bhys

3260E/L+30-3020bipolar, chopper stabilized3280E/L+40-4045chopper stabilized3134E/L+50-5027bipolar switch3133K/L/S+75-7552bipolar switch3281E/L+90-90100chopper stabilized3132K/L/S+95-9552bipolar switch3187E/L+150-150100*3177S+150-1502003625S+150-150200900 mA outputs1, 3, 53626S+150-150200400 mA outputs1, 3, 53195E/L+160-1602201, 43197L+160-16023013175S+170-1702003188E/L+180-180200*3283E/L+180-180300chopper stabilized3189E/L+230-230100*3275S+250-250100*53185E/L+270-270340*Operating Temperature Ranges:

S = -20°C to +85°C, E = -40°C to +85°C, J = -40°C to +115°C, K = -40°C to +125°C, L = -40°C to +150°C

Notes1.Protected.

2.Output 1 switches on south pole, output 2 switches on north pole for 2-phase, bifilar-wound, unipolar-driven brushless dcmotor control.

3.Power driver output.4.Active pull down.

5.Complementary outputs for 2-phase bifilar-wound, unipolar-driven brushless dc motor control.

*Minimum.

†Latches will not switch on removal of magnetic field; bipolar switches may switch on removal of field but require field reversalfor reliable operation over operating temperature range.

115 Northeast Cutoff, Box 15036

Worcester, Massachusetts 01615-0036 (508) 853-5000