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Solved by SPX1521 TM 300mA Low Dropout Voltage Regulator FEATURES %OutputAccuracy3.3V,5V, at300mAOutput VeryLowQuiescentCurrent 0.3V(Typ.)DropoutVoltageat300mA ExtremelyTightLoadandLineRegulation Current&ThermalLimiting ReverseBatteryProtection EquivalentReplacementForLT52 AvailableinRoHSCompliant,LeadFreePackages: TO-252,SOT-223,TO-220&TO-263 SPX1521 3 Pin TO-263 1 2 3 VOUT GND VIN DESCRIPTION TheSPX52isalowpowervoltageregulator.Thisdeviceisanexcellentchoiceforuseinbatterypoweredapplicationssuchascordlesstelephones,radiocontrolsystems,andportablecomputers. TheSPX52featuresverylowquiescentcurrentandverylowdropoutvoltage.Thisincludesatight initial tolerance of 1% max, and very low output temperature coefficient, making the SPX1521 useful asalow-powervoltagereference. TheSPX52isofferedin3pinTO-252,SOT-223,TO-220&TO-263packages. TYPICAL APPLICATIONS CIRCUIT VOUT IIN IN OUT 5V IL SPX1521 0.1F + GND + 2.2F LOAD IIN = IL + IG IG May5-07 SPX52300mALowDropoutVoltageRegulator (c)2007SipexCorporation PowerDissipation........................................................ InternallyLimited LeadTemp.(Soldering,5Seconds) ............................................. 260C . StorageTemperatureRange ........................................ -65Cto+50C . OperatingJunctionTemperatureRange...................... -40Cto+25C InputSupplyVoltage...................................................-20Vto+20V ABSOLUTE MAXIMUM RATINGS ShutdownInputVoltage...................................................-0.6Vto+6.5V ESDRating ...............................................................................2kVMin . ElectricalcharacteristicsatVIN=6V,IO=mA,COUT=2.2F,TA= 25C, unless otherwise specified. Boldfaceappliesoverthefulloperatingtemperaturerange. PARAMETER 3.3V Version OutputVoltage ReverseOutputCurrent 5.0V Version OutputVoltage ReverseOutputCurrent All Voltage Options OutputVoltage Temperature Coefficient Line Regulation LoadRegulation(Note3) DropoutVoltage(Note5) GroundCurrent CurrentLimit RippleRejection InputReverseLeakageCurrent CONDITIONS (Note 2) mA IL 300mA VOUT=3.3V,VIN=0V mA IL 300mA VOUT=5.0V,VIN=0V (Note1) 6V VIN 20V (Note 4) IL=to300mA IL=mA IL=300mA IL=mA IL=0mA IL=50mA IL=00mA IL=300mA VOUT=0 VIN-VOUT=V(Avg), VRIPPLE=0.5Vp-p, FRIPPLE=20Hz,ILOAD=50mA VIN=-20V,VOUT=0V TYP MIN MAX ELECTRICAL CHARACTERISTICS UNITS 3.3 3.3 6 5.0 5.0 6 20 1.5 4 0.3 0.30 100 350 1.5 2 5 330 58 3.267 3.217 4.950 4.880 3.333 3.382 25 5.050 5.120 25 100 20 20 30 0.7 0.25 0.55 0.70 150 500 3 6 14 500 V A V A ppm/C mV mV V 50 A mA mA dB 1.0 mA Note 1: Output or reference voltage temperature coefficients defined as the worst case voltage change divided bythetotaltemperaturerange. Note 2: Unless otherwise specified all limits are guaranteed for Tj=25C,VIN=6V,IL=mAandCL=2.2F. Note 3:Regulationismeasuredatconstantjunctiontemperature,usingpulsetestingwithalowdutycycle. Changes in output voltage due to heating effects are covered under the specification for thermal regulation. Note 4:LineregulationfortheSPX52istestedat25CforIL=mA.ForTJ=25C,lineregulationis guaranteedbydesign. Note 5: Dropout voltage is defined as the input to output differential at which the output voltage drops 100 mV belowitsnominalvaluemeasuredatVdifferential. May5-07 SPX52300mALowDropoutVoltageRegulator (c)2007SipexCorporation 2 APPLICATION INFORMATION External Capacitors The stability of the SPX52 requires a 2.2Forgreatercapacitorbetweenoutput andground.Oscillationcouldoccurwithout this capacitor. Most types of tantalum or aluminum electrolytic works fine here. For operationsofbelow-25Csolidtantalumis recommended since the many aluminum typeshaveelectrolytesthatfreezeatabout -30C. The ESR of about 5 or less and resonantfrequencyabove500kHzarethe most important parameters in the value of thecapacitor.Thecapacitorvaluecanbe increasedwithoutlimit. The SPX52, unlike other low dropout regulatorswillremainstableandinregulationwithnoloadinadditiontotheinternal voltage divider. This feature is especially important in applications like CMOS RAM keep-alive. Ifthereismorethan0inchesofwirebetween the input and the AC filter capacitor, orifabatteryisusedastheinput,thena 0.F tantalum or aluminum electrolytic capacitorshouldbeplacedfromtheinput totheground. Reducing Output Noise ItmaybeanadvantagetoreducetheAC noisepresentattheoutput.Onewayistoreducetheregulatorbandwidthbyincreasing thesizeoftheoutputcapacitor.Increasing thecapacitorfromFto220Fonlydecreasesthenoisefrom430Vto60Vrms fora00kHzbandwidthat5Voutput. Note:TabisconnectedtoGND SOT-223 (M3) TO-263-3 (T) TO-220-3 (U) PINOUTS TO-252 (R) 3 VIN GND VOUT SPX1521 1 2 3 1 SPX1521 2 3 SPX1521 1 2 3 2 1 VIN GND VOUT Top View Front View VOUT GND VIN Top View ThermalResistance(ThetaJA) SOT-223------62.3C/W TO-262------3.4C/W TO-220------29.4C/W TO-252------50.0C/W VOUT GND VIN Front View May5-07 SPX52300mALowDropoutVoltageRegulator (c)2007SipexCorporation 3 PACKAGE: 3 PIN TO-263 May5-07 SPX52300mALowDropoutVoltageRegulator (c)2007SipexCorporation 4 PACKAGE: 3 PIN TO-220 May5-07 SPX52300mALowDropoutVoltageRegulator (c)2007SipexCorporation 5 PACKAGE: 3 PIN TO-252 May5-07 SPX52300mALowDropoutVoltageRegulator (c)2007SipexCorporation 6 PACKAGE: 3 PIN SOT223 May5-07 SPX52300mALowDropoutVoltageRegulator (c)2007SipexCorporation 7 ORDERING INFORMATION Package RoHS Status Code SOT-223-3 SOT-223-3 SOT-223-3 TO-252 TO-263-3 TO-252 TO-252 TO-252 TO-252 TO-252 TO-252 TO-252 TO-263-3 TO-263-3 TO-263-3 TO-263-3 TO-263-3 TO-263-3 TO-263-3 TO-220-3 TO-220-3 TO-220-3 TO-220-3 Active Active Active EOL EOL OBS OBS OBS OBS OBS OBS OBS OBS OBS OBS OBS OBS OBS OBS OBS OBS OBS OBS Part Number SPX52M3-L-3-3 SPX52M3-L-5-0 SPX52M3-L-5-0/TR SPX52R-3-3 SPX52T-L-5-0 SPX52R-3-3/TR SPX52R-5-0 SPX52R-5-0/TR SPX52R-L-3-3 SPX52R-L-3-3/TR SPX52R-L-5-0 SPX52R-L-5-0/TR SPX52T-3-3 SPX52T-3-3/TR SPX52T-5-0 SPX52T-5-0/TR SPX52T-L-3-3 SPX52T-L-3-3/TR SPX52T-L-5-0/TR SPX52U-3-3 SPX52U-5-0 SPX52U-L-3-3 SPX52U-L-5-0 Pack Type Tube Tube Tape&Reel Tube Tube Tape&Reel Tube Tape&Reel Tube Tape&Reel Tube Tape&Reel Tube Tape&Reel Tube Tape&Reel Tube Tape&Reel Tape&Reel Tube Tube Tube Tube Pack Qty 78 78 2500 77 50 2500 77 2500 77 2500 77 2500 50 500 50 500 50 500 500 50 50 50 50 Solved by Sipex Corporation Headquarters and Sales Office 233SouthHillviewDrive Milpitas,CA95035 TEL:(408)934-7500 FAX:(408)935-7600 TM SipexCorporationreservestherighttomakechangestoanyproductsdescribedherein.Sipexdoesnotassumeanyliabilityarisingoutoftheapplicationoruseofanyproductorcircuitdescribedherein;neitherdoesitconveyanylicenseunderitspatentrightsnortherightsofothers. May5-07 SPX52300mALowDropoutVoltageRegulator (c)2007SipexCorporation 8 |
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