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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
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