28 霍尔传感器霍尔传感器a3144eu

1、3141 THRU3144Data Sheet27621.6ASENSITIVE HALL-EFFECT SWITCHES FOR HIGH-TEMPERATURE OPERATIONVCC123Dwg. PH-003APinning is shown viewed from branded side.ABSOLUTE MAXIMUM RATINGSASupply Voltage, VCCVReverse Battery Voltage, VRCC . -35 VMagnetic Flux Density, BUnlimitedat T = +25COutput OFF Voltage, VV

2、OUTReverse Output Voltage, VVOUTContinuous Output Current, I25 mAOUTOperating Temperature Range, TASuffix E. -40C to +85CSuffix L. -40C to +150CStorage Temperature Range,TS. -65C to +170CXThese Hall-effect switches are monolithic integrated circuits with tighter magnetic specifications, designed to

3、operate continuously over extended temperatures to +150C, and are more stable with both temperature and supply voltage changes. The unipolar switching characteristic makes these devices ideal for use with a simple bar or rod magnet. The four basic devices (3141, 3142, 3143, and 3144) are identical e

4、xcept for magnetic switch points.Each device includes a voltage regulator for operation with supply voltages of 4.5 to 24 volts, reverse battery protection diode, quadratic Hall-voltage generator, temperature compensation circuitry, small- signal amplifier, Schmitt trigger, and an open-collector out

5、put to sink up to 25 mA. With suitable output pull up, they can be used with bipolar or CMOS logic circuits. The A3141 and A3142 are im- proved replacements for the UGN/UGS3140; the A3144 is the improved replacement for the UGN/UGS3120.SUPPLYGROUNDOUTPUTThe first character of the part number suffix

6、determines the device operating temperature range. Suffix E is for the automotive and industrial temperature range of -40C to +85C. Suffix L is for the automotive and military temperature range of -40C to +150C. Three package styles provide a magnetically optimized package for most applications. Suf

7、fix LT is a miniature SOT-89/TO-243AA transis- tor package for surface-mount applications; suffix U is a three-lead plastic mini-SIP, while suffix UA is a three-lead ultra-mini-SIP.FEATURES and BENEFITS Superior Temp. Stability for Automotive or Industrial Applications 4.5 V to 24 V Operation Needs

8、Only An Unregulated Supply Open-Collector 25 mA Output Compatible with Digital Logic Reverse Battery Protection Activate with Small, Commercially Available Permanent Magnets Solid-State Reliability Small Size Resistant to Physical StressA3141ELTAlways order by complete part number, e.g.,.3141 THRU 3

9、144SENSITIVE HALL-EFFECT SWITCHES FOR HIGH-TEMP. OPERATIONFUNCTIONAL BLOCK DIAGRAM1VCCREG.X3 OUTPUT 2 GROUNDDwg. FH-005-2ELECTRICAL CHARACTERISTICS at VCC = 8 V over operating temperature range.CharacteristicSymbolTest ConditionsLimitsMin.Typ.Max.UnitsSupply VoltageVCCOperating4.524VOutput Saturatio

10、n VoltageVOUT(SAT)IOUT = 20 mA, B BOP175400mVOutputLeakageCurrentIOFFVOUT = 24 V, B BRP1.01mASupply CurrentICCB BRP (Output OFF)4.49.mAOutput Rise TimetrRL = 820 W, CL = 20 pF0.042.0msOutput Fall TimetfRL = 820 W, CL = 20 pF0.182.0msMAGNETIC CHARACTERISTICS in gauss over operating supply voltage ran

11、ge.CharacteristicPart Numbers*A3141A3142A3143A3144Min.Typ.Max.Min. Typ.Max.Min. Typ.Max.Min. Typ.Max.BOPat TA = 25C501001613018023220280347035over operating temp. range3010017511518024520528035535450BRPat TA = 25C104513751251751652252855033over operating temp. range10451456012519015022530025430Bhysa

12、t TA = 25C2055830558305582055over operating temp. range2055803055803055802055NOTES: Typical values are at TA = +25C and VCC = 8 V.BOP = operate point (output turns ON); BRP = release point (output turns OFF); Bhys = hysteresis (BOP - BRP).*Complete part number includes a suffix to identify operating

13、 temperature range (E- or L-) and package type ( -LT, -U, or -UA).115 Northeast Cutoff, Box 15036Worcester, Massachusetts 01615-0036 (508) 853-5000 Copyright 1993, 1999, Allegro MicroSystems, Inc.TYPICAL OPERATING CHARACTERISTICSA3142 SWITCH POINTSOUTPUT SATURATION VOLTAGEV CC= 8 VOPERATE POINTRELEA

14、SE POINTI OUT = 20 mA VCC = 4.524 V400300SATURATION VOLTAGE IN mV300SWITCH POINT IN GAUSS2002001001000-50-250255075100125150AMBIENT TEMPERATURE IN CDwg. GH-0440-50-250255075100125150AMBIENT TEMPERATURE IN CDwg. GH-040-1SUPPLY CURRENTSUPPLY CURRENTTA = +25CB BRPB B OPB B OPB BRPVCC = 8 V107.08.0SUPPL

15、Y CURRENT IN mASUPPLY CURRENT IN mA6.06.04.02.05.04.000510152025SUPPLY VOLTAGE IN VOLTSDwg. GH-041-1-50-250255075100AMBIENT TEMPERATURE IN C125150Dwg. GH-039-1* Complete part number includes a suffix denoting operating temperature range (E- or L-) and package type ( -LT, -U, or -UA).3141 THRU 3144SE

16、NSITIVE HALL-EFFECT SWITCHES FOR HIGH-TEMP. OPERATIONTYPICAL OPERATING CHARACTERISTICS (cont.)CHANGE IN OPERATE POINTTA = +25C20CHANGE IN OPERATE POINT IN GAUSS15105.00-5.00510152025SUPPLY VOLTAGE IN VOLTSDwg. GH-042-1OPERATIONThe output of these devices (pin 3) switches low when the magnetic fielda

17、t the Hall sensor exceeds the operate point threshold (BOP). At this point, theSENSOR LOCATIONS(0.005” 0.13 mm die placement)Suffix “LT”ACTIVE AREA DEPTH0.0300.76 mm NOM0.0892.26 mm0.0431.09 mmA123Dwg. MH-008-2CSuffix “U”ACTIVE AREA DEPTH0.0160.41 mm NOM0.0912.31 mm0.0701.78 mmABRANDEDSURFACE123Dwg.

18、 MH-002-2BSuffix “UA”ACTIVE AREA DEPTH0.0190.48 mm NOM0.0822.07 mmA0.0551.39 mmBRANDEDSURFACE123Dwg. MH-011-10output voltage is VOUT(SAT). When the magnetic field is reduced to below the release point threshold (BRP), the device output goes high. The difference in the magnetic operate and release po

19、ints is called the hysteresis (Bhys) of the device. This built-in hysteresis allows clean switching of the output even in the presence of external mechanical vibration and electrical noise.PACKAGE DESIGNATOR LT(SOT-89/TO-243AA)Dimensions in Inches (for reference only)0.1730.1810.0640.0720.1550.1670.

20、0900.1020.0350.0470.059BSC0.0140.019 0.017 0.0220.118BSC1230.0550.0630.0840.0900.0140.017Dwg. MA-009-3 inDimensions in Millimeters (controlling dimensions)4.404.601.621.833.944.252.292.600.891.201.50BSC0.360.480.440.563.00BSC1231.401.602.132.290.350.44Dwg. MA-009-3 mmNOTES: 1. Tolerances on package

21、height and width represent allowable mold offsets. Dimensions given are measured at the widest point (parting line).2. Exact body and lead configuration at vendors option within limits shown.3. Height does not include mold gate flash.PACKAGE DESIGNATOR UDimensions in InchesDimensions in Millimeters

22、(controlling dimensions)(for reference only) 0.183 0.1780.0630.059 4.65 4.521.601.50450.0180.015450.460.380.1814.600.1764.470.086123MAX0.6000.5602.18123MAX15.2414.23SEE NOTE0.016SEE NOTE0.410.0500.1 0Dwg. MH-003D in1.272.54Dwg. MH-003D mmDevices in the U package areNOT RECOMMENDED FOR NEW DESIGNNOTE

23、S: 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 vendors option within limits shown.3. Height does not include mold gate flash.4. Recommended minimum PWB hole diamet

24、er to clear transition area is 0.035 (0.89 mm).PACKAGE DESIGNATOR UADimensions in InchesDimensions in Millimeters (controlling dimensions)(for reference only) 0.164 0.159450.0620.058 4.17 4.04451.571.470.1220.1170.085 1MAX23 00.6400.600450310.0150.0163.102.9745.2.16 1MAX16.2615.24230.790.38SEE NOTES

25、EE NOTE0.410.050BSCDwg. MH-014D in1.27BSCDwg. MH-014D 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 vendors option within limits shown.3. Height does not in

26、clude mold gate flash.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 design of its products.The information included herein is believed to be accurate and reliable. However, All

27、egro 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.HALL-EFFECT SENSORS SELECTION GUIDEPartial PartAvail. Oper.Characteristics at TA = +25CNumberTemp.BOP(max)BRP(min)Bhys(typ)FeaturesNotesH

28、ALL-EFFECT UNIPOLAR SWITCHES in order of BOP and Bhys3240E/L+50+5.010chopper stabilized13210E705.07.7micropower, chopper stabilized3361E+120+505.0*2-wire, chopper stabilized3362E+120+505.0*2-wire, chopper stabilized3161E+160+30202-wire3141E/L+160+10553235S+175+2515*output 12-25-17515*output 225140E+

29、200+5055300 mA output1, 33142E/L+230+75553143E/L+340+165553144E/L+350+50553122E/L+400+1401053123E/L+440+1801053121E/L+450+1251053150J+40 to +85020programmable, chopperstabilized1HALL-EFFECT LATCHES & BIPOLAR SWITCHES in order of BOP and Bhys3260E/L+30-3020bipolar, chopper stabilized3280E/L+40-4045chopper stabilized3134E/L+50-5027bipolar switch3133K/L/S+7