cyclesios8

2A/1.
25A,1.
2MHz,Synchronous,Step-DownDC-to-DCRegulatorsDataSheetADP2119/ADP2120Rev.
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FEATURESContinuousoutputcurrentADP2119:2AADP2120:1.
25A145mand70mintegratedMOSFETsInputvoltagerangefrom2.
3Vto5.
5VOutputvoltagefrom0.
6VtoVIN±1.
5%outputaccuracy1.
2MHzfixedswitchingfrequencySynchronizablebetween1MHzand2MHzSelectablePWMorPFMmodeoperationCurrentmodearchitecturePrecisionthresholdenableinputPower-goodflagVoltagetrackingIntegratedsoftstartInternalcompensationStartupwithprechargedoutputUVLO,OVP,OCP,andthermalshutdown10-lead,3mm*3mmLFCSP_WDpackageSupportedbyADIsimPowerdesigntoolAPPLICATIONSPointofloadconversionCommunicationsandnetworkingequipmentIndustrialandinstrumentationConsumerelectronicsMedicalapplicationsTYPICALAPPLICATIONCIRCUIT10ENADP2119/ADP21201VIN9SYNC/MODE2PVIN8PGOOD3SW7TRK4PGND6FB5GNDR210kVIN5VCIN22FX5R6.
3VCOUT22FX5R6.
3VC10.
1FR110RBOT2.
21kVOUT3.
3VL1.
5HRTOP10k08716-001Figure1.
GENERALDESCRIPTIONTheADP2119/ADP2120arelowquiescentcurrent,synchronous,step-downdc-to-dcregulatorsinacompact3mm*3mmLFCSP_WDpackage.
Bothdevicesuseacurrentmode,constantfrequencypulse-widthmodulation(PWM)controlschemeforexcellentstabilityandtransientresponse.
Underlightloadconditions,theycanbeconfiguredtooperateinapulsefrequencymodulation(PFM)mode,whichreducesswitchingfrequencytosavepower.
TheADP2119/ADP2120supportinputvoltagesfrom2.
3Vto5.
5V.
Theoutputvoltagecanbeadjustedfrom0.
6Vuptotheinputvoltage(VIN)fortheadjustableversion,whereasthefixedoutputversionisavailableinpresetoutputvoltageoptionsof3.
3V,2.
5V,1.
8V,1.
5V,1.
2V,and1.
0V.
TheADP2119/ADP2120requireminimalexternalpartsandprovideahighefficiencysolutionwiththeirintegratedpowerswitches,synchronousrectifiers,andinternalcompensation.
EachICdrawslessthan2Acurrentfromtheinputsourcewhenitisdisabled.
Otherkeyfeaturesincludeundervoltagelockout(UVLO),integratedsoftstarttolimitinrushcurrentatstartup,overvoltageprotection(OVP),overcurrentprotection(OCP),andthermalshutdown(TSD).
10090807060504030201000.
010.
11EFFICIENCY(%)OUTPUTCURRENT(A)PFMFPWMVIN=5VVOUT=1.
8V08716-002Figure2.
ADP2119Efficiencyvs.
OutputCurrentADP2119/ADP2120DataSheetRev.
A|Page2of24TABLEOFCONTENTSFeatures1Applications.
1TypicalApplicationCircuit1GeneralDescription.
1RevisionHistory2Specifications.
3AbsoluteMaximumRatings.
5ThermalResistance.
5BoundaryCondition.
5ESDCaution.
5PinConfigurationandFunctionDescriptions.
6TypicalPerformanceCharacteristics7FunctionalBlockDiagram15TheoryofOperation16ControlScheme16PWMModeOperation.
16PFMModeOperation.
16SlopeCompensation16Enable/Shutdown16IntegratedSoftStart16Tracking.
17OscillatorandSynchronization.
17CurrentLimitandShort-CircuitProtection17OvervoltageProtection(OVP)17UndervoltageLockout(UVLO)17ThermalShutdown17PowerGood(PGOOD)17ApplicationsInformation.
18ADIsimPowerDesignTool18OutputVoltageSelection.
18InductorSelection.
18OutputCapacitorSelection.
18InputCapacitorSelection.
19VoltageTracking.
19TypicalApplicationCircuits20OutlineDimensions.
22OrderingGuide22REVISIONHISTORY8/12—Rev.
0toRev.
AChangetoFeaturesSection.
1AddedADIsimPowerDesignToolSection.
18UpdatedOutlineDimensions.
22ChangestoOrderingGuide226/10—Revision0:InitialVersionDataSheetADP2119/ADP2120Rev.
A|Page3of24SPECIFICATIONSVIN=VPVIN=3.
3V,EN=VIN,SYNC/MODE=VINatTJ=40°Cto+125°C,unlessotherwisenoted.
Table1.
ParameterSymbolTestConditions/CommentsMinTypMaxUnitVINandPVINVINVoltageRangeVIN2.
35.
5VPVINVoltageRangeVPVIN2.
35.
5VQuiescentCurrentIVINNoswitching,SYNC/MODE=GND150200ASwitching,noload,SYNC/MODE=VIN680900AShutdownCurrentISHDNVIN=VPVIN=5.
5V,EN=GND0.
32AVINUndervoltageLockoutThresholdUVLOVINrising2.
22.
3VVINfalling22.
1VOUTPUTCHARACTERISTICSLoadRegulation1ADP2119,IO=0Ato2A0.
08%/ALoadRegulation2ADP2120,IO=0Ato1.
25A0.
08%/ALineRegulation1ADP2119,IO=1A0.
05%/VLineRegulation2ADP2120,IO=1A0.
05%/VFBFBRegulationVoltageVFBVIN=2.
3Vto5.
5V0.
5910.
60.
609VFBBiasCurrentIFBVIN=2.
3Vto5.
5V0.
010.
1ASWHigh-SideOnResistance3VIN=VPVIN=3.
3V,ISW=200mA145190mLow-SideOnResistance3VIN=VPVIN=3.
3V,ISW=200mA70100mSWPeakCurrentLimitHigh-sideswitch,VIN=VPVIN=3.
3V(ADP2119)2.
533.
5AHigh-sideswitch,VIN=VPVIN=3.
3V(ADP2120)1.
622.
4ASWMaximumDutyCycleVIN=VPVIN=5.
5V,fullfrequency100%SWMinimumOnTime4VIN=VPVIN=5.
5V,fullfrequency100nsTRKTRKInputVoltageRange0600mVTRK-to-FBOffsetVoltageTRK=0mVto500mV15+15mVTRKInputBiasCurrent100nAFREQUENCYOscillatorFrequencyfS1.
021.
21.
38MHzSYNC/MODESynchronizationRange12MHzSYNCMinimumPulseWidth100nsSYNCMinimumOffTime100nsSYNCInputHighVoltage1.
3VSYNCInputLowVoltage0.
4VINTEGRATEDSOFTSTARTSoftStartTimeAllswitchingfrequencies1024ClockcyclesfS=1.
2MHz853sPGOODPower-GoodRangeFBrisingthreshold105110115%FBrisinghysteresis2.
5%FBfallingthreshold859095%FBfallinghysteresis2.
5%Power-GoodDeglitchTimeFromFBtoPGOOD16ClockcyclesPGOODLeakageCurrentVPGOOD=5V0.
11APGOODOutputLowVoltageIPGOOD=1mA150200mVPGOODOutputLowResistorIPGOOD=1mA150200ADP2119/ADP2120DataSheetRev.
A|Page4of24ParameterSymbolTestConditions/CommentsMinTypMaxUnitENENInputRisingThresholdVIN=2.
3Vto5.
5V1.
121.
21.
28VENInputHysteresisVIN=2.
3Vto5.
5V100mVENPull-DownResistor1MTHERMALThermalShutdownThreshold150°CThermalShutdownHysteresis25°C1SpecifiedbythecircuitinFigure54.
2SpecifiedbythecircuitinFigure58.
3Pin-to-pinmeasurements.
4Guaranteedbydesign.
DataSheetADP2119/ADP2120Rev.
A|Page5of24ABSOLUTEMAXIMUMRATINGSTable2.
ParameterRatingVIN,PVIN0.
3Vto+6VSW0.
3Vto+6VFB,SYNC/MODE,EN,TRK,PGOOD0.
3Vto+6VPGNDtoGND0.
3Vto+0.
3VOperatingJunctionTemperatureRange40°Cto+125°CStorageTemperatureRange65°Cto+150°CSolderingConditionsJEDECJ-STD-020StressesabovethoselistedunderAbsoluteMaximumRatingsmaycausepermanentdamagetothedevice.
Thisisastressratingonly;functionaloperationofthedeviceattheseoranyotherconditionsabovethoseindicatedintheoperationalsectionofthisspecificationisnotimplied.
Exposuretoabsolutemaximumratingconditionsforextendedperiodsmayaffectdevicereliability.
THERMALRESISTANCEθJAisspecifiedfortheworst-caseconditions,thatis,adevicesolderedinacircuitboardforsurface-mountpackages.
Table3.
ThermalResistancePackageTypeθJAUnit10-LeadLFCSP_WD40°C/WBOUNDARYCONDITIONθJAismeasuredusingnaturalconvectiononaJEDEC4-layerboard,andtheexposedpadissolderedtotheprintedcircuitboard(PCB)withthermalvias.
ESDCAUTIONADP2119/ADP2120DataSheetRev.
A|Page6of24PINCONFIGURATIONANDFUNCTIONDESCRIPTIONS10ENADP2119/ADP2120EXPOSEDPAD1VIN9SYNC/MODE2PVIN8PGOOD3SW7TRK4PGND6FB5GNDNOTES1.
THEEXPOSEDPADSHOULDBESOLDEREDTOANEXTERNALGROUNDPLANEUNDERNEATHTHEICFORTHERMALDISSIPATION.
08716-003Figure3.
PinConfiguration(TopView)Table4.
PinFunctionDescriptionsPinNo.
MnemonicDescription1VINBiasVoltageInputPin.
Connectabypasscapacitor(0.
1Fminimum)betweenthispinandGNDandasmall(10)resistorbetweenthispinandPVIN.
2PVINPowerInputPin.
Connectthispintotheinputpowersource.
ConnectabypasscapacitorbetweenthispinandPGND.
3SWSwitchNodeOutput.
Connectthispintotheoutputinductor.
4PGNDPowerGround.
ConnectthispintothepowergroundplaneandtothehighcurrentreturnforthepowerMOSFET.
5GNDAnalogGround.
Connectthispintothegroundplane.
6FBFeedbackVoltageSenseInput.
ConnectthispintoaresistordividerfromVOUT.
Forthefixedoutputversion,connecttoVOUTdirectly.
7TRKTrackingInput.
Totrackamastervoltage,driveTRKfromaresistordividerfromthemastervoltage.
Ifthetrackingfunctionisnotused,connectTRKtoVIN.
8PGOODPower-GoodOutput(OpenDrain).
Connectthispintoaresistortoanypull-upvoltage1MHzand2MHztosynchronizetheswitchingfrequencytotheexternalclock(seetheOscillatorandSynchronizationsectionfordetails).
FPWM/PFMSelection(MODE).
WhenthispinisconnectedtoVIN,thePFMmodeisdisabledandthepartworksincontinuousconductionmode(CCM)only.
Whenthispinisconnectedtoground,thePFMmodeisenabledandbecomesactiveatlightloads.
10ENPrecisionThresholdEnableInputPin.
Anexternalresistordividercanbeusedtosettheturn-onthreshold.
Toenablethepartautomatically,connecttheENpintoVIN.
Thispinhasa1Mpull-downresistortoGND.
EPADExposedPadTheexposedpadshouldbesolderedtoanexternalgroundplaneunderneaththeICforthermaldissipation.
DataSheetADP2119/ADP2120Rev.
A|Page7of24TYPICALPERFORMANCECHARACTERISTICSTA=25°C,VIN=VPVIN=5V,VOUT=1.
2V,L=1.
5H,CIN=22F,COUT=2*22F,unlessotherwisenoted.
100010203040506070809000.
20.
40.
60.
81.
01.
21.
41.
61.
82.
0EFFICIENCY(%)OUTPUTCURRENT(A)VOUT=1.
0VVOUT=1.
2VVOUT=1.
5VVOUT=1.
8VVOUT=2.
5VINDUCTORSUMIDACDRH5D18BHPNP-1R5M08716-004Figure4.
Efficiency(ADP2119,VIN=3.
3V,FPWM)vs.
OutputCurrent100010203040506070809000.
20.
40.
60.
81.
01.
21.
41.
61.
82.
0EFFICIENCY(%)OUTPUTCURRENT(A)VOUT=1.
0VVOUT=1.
2VVOUT=1.
5VVOUT=1.
8VVOUT=2.
5VVOUT=3.
3VINDUCTORSUMIDACDRH5D18BHPNP-1R5M08716-005Figure5.
Efficiency(ADP2119,VIN=5V,FPWM)vs.
OutputCurrent100010203040506070809000.
20.
40.
60.
81.
01.
21.
4EFFICIENCY(%)OUTPUTCURRENT(A)VOUT=1.
0VVOUT=1.
2VVOUT=1.
5VVOUT=1.
8VVOUT=2.
5VINDUCTORSUMIDACDRH5D18BHPNP-1R5M08716-006Figure6.
Efficiency(ADP2120,VIN=3.
3V,FPWM)vs.
OutputCurrent100010203040506070809000.
20.
40.
60.
81.
01.
21.
41.
61.
82.
0EFFICIENCY(%)OUTPUTCURRENT(A)VOUT=1.
0VVOUT=1.
2VVOUT=1.
5VVOUT=1.
8VVOUT=2.
5VINDUCTORSUMIDACDRH5D18BHPNP-1R5M08716-007Figure7.
Efficiency(ADP2119,VIN=3.
3V,PFM)vs.
OutputCurrent100010203040506070809000.
20.
40.
60.
81.
01.
21.
41.
61.
82.
0EFFICIENCY(%)OUTPUTCURRENT(A)VOUT=1.
0VVOUT=1.
2VVOUT=1.
5VVOUT=1.
8VVOUT=2.
5VVOUT=3.
3VINDUCTORSUMIDACDRH5D18BHPNP-1R5M08716-008Figure8.
Efficiency(ADP2119,VIN=5V,PFM)vs.
OutputCurrent100010203040506070809000.
20.
40.
60.
81.
01.
21.
4EFFICIENCY(%)OUTPUTCURRENT(A)VOUT=1.
0VVOUT=1.
2VVOUT=1.
5VVOUT=1.
8VVOUT=2.
5VINDUCTORSUMIDACDRH5D18BHPNP-1R5M08716-009Figure9.
Efficiency(ADP2120,VIN=3.
3V,PFM)vs.
OutputCurrentADP2119/ADP2120DataSheetRev.
A|Page8of24100010203040506070809000.
20.
40.
60.
81.
01.
21.
4EFFICIENCY(%)OUTPUTCURRENT(A)VOUT=1.
0VVOUT=1.
2VVOUT=1.
5VVOUT=1.
8VVOUT=2.
5VVOUT=3.
3VINDUCTORSUMIDACDRH5D18BHPNP-1R5M08716-010Figure10.
Efficiency(ADP2120,VIN=5V,FPWM)vs.
OutputCurrent9008508007507006506005505004504002.
35.
55.
14.
74.
33.
93.
53.
12.
7QUIESCENTCURRENT(A)VIN(V)TJ=+125°CTJ=+25°CTJ=–40°C08716-011Figure11.
QuiescentCurrentvs.
VIN(Switching)27525022520017515012510075502.
35.
55.
14.
74.
33.
93.
53.
12.
7PFETRESISTOR(m)VIN(V)TJ=+125°CTJ=+25°CTJ=–40°C08716-012Figure12.
PFETResistorvs.
VIN(Pin-to-PinMeasurements)100010203040506070809000.
20.
40.
60.
81.
01.
21.
4EFFICIENCY(%)OUTPUTCURRENT(A)VOUT=1.
0VVOUT=1.
2VVOUT=1.
5VVOUT=1.
8VVOUT=2.
5VVOUT=3.
3VINDUCTORSUMIDACDRH5D18BHPNP-1R5M08716-013Figure13.
Efficiency(ADP2120,VIN=5V,PFM)vs.
OutputCurrent605604603602601600599598597596595594–40120100806040200–20FEEDBACKVOLTAGE(mV)TEMPERATURE(°C)08716-014Figure14.
FeedbackVoltagevs.
Temperature(VIN=3.
3V)120110100908070605040302.
35.
55.
14.
74.
33.
93.
53.
12.
7NFETRESISTOR(m)VIN(V)TJ=+125°CTJ=+25°CTJ=–40°C08716-015Figure15.
NFETResistorvs.
VIN(Pin-to-PinMeasurements)DataSheetADP2119/ADP2120Rev.
A|Page9of241.
301.
001.
051.
101.
151.
201.
25–40120100806040200–20ENTHRESHOLD(V)TEMPERATURE(°C)FALLINGRISING08716-016Figure16.
ENThresholdvs.
Temperature3.
12.
52.
62.
72.
82.
93.
0–40120100806040200–20PEAKCURRENTLIMIT(A)TEMPERATURE(°C)08716-017Figure17.
PeakCurrentLimitvs.
Temperature(ADP2119,VIN=3.
3V)2.
102.
051.
751.
801.
851.
901.
952.
00–40120100806040200–20PEAKCURRENTLIMIT(A)TEMPERATURE(°C)08716-018Figure18.
PeakCurrentLimitvs.
Temperature(ADP2120,VIN=3.
3V)2.
302.
002.
052.
102.
152.
202.
25–40120100806040200–20UVLOTHRESHOLD(V)TEMPERATURE(°C)FALLINGRISING08716-019Figure19.
UVLOThresholdvs.
Temperature(VIN=3.
3V)3.
53.
33.
12.
92.
72.
52.
32.
12.
35.
55.
14.
74.
33.
93.
53.
12.
7PEAKCURRENTLIMIT(A)VIN(V)TJ=+125°CTJ=+25°CTJ=–40°C08716-020Figure20.
PeakCurrentLimitvs.
VIN(ADP2119)2.
22.
12.
01.
91.
81.
71.
62.
35.
55.
14.
74.
33.
93.
53.
12.
7PEAKCURRENTLIMIT(A)VIN(V)TJ=+125°CTJ=+25°CTJ=–40°C08716-021Figure21.
PeakCurrentLimitvs.
VIN(ADP2120)ADP2119/ADP2120DataSheetRev.
A|Page10of24CH1500mVCH25.
00VCH35.
00VCH42.
00AM400sACH33.
60VT30.
4%3124TENVOUTPGOODIL08716-022Figure22.
SoftStartwithFullLoad(ADP2119,VIN=5V)CH150.
0mVCH41.
00AM200sACH4880mAT596.
0s14TVOUT(AC)IO08716-023Figure23.
LoadTransient(ADP2119,PFM,VIN=5V)CH150.
0mVCH41.
00AM200sACH4960mAT396.
0s14TVOUT(AC)IO08716-024Figure24.
LoadTransient(ADP2120,PFM,VIN=5V)CH1500mVCH25.
00VCH35.
00VCH42.
00AM400sACH33.
50VT784.
0s3124TENVOUTPGOODIL08716-025Figure25.
SoftStartwithPrechargedOutput(ADP2119,VIN=5V)CH150.
0mVCH41.
00AM200sACH4880mAT596.
0s14TVOUT(AC)IO08716-026Figure26.
LoadTransient(ADP2119,FPWM,VIN=5V)CH150.
0mVCH41.
00AM200sACH4960mAT396.
0s14TVOUT(AC)IO08716-027Figure27.
LoadTransient(ADP2120,FPWM,VIN=5V)DataSheetADP2119/ADP2120Rev.
A|Page11of24CH1500mVCH25.
00VCH42.
00AM2.
0msACH1480mVT3.
92ms124TVOUTSWIL08716-028Figure28.
OutputShort(ADP2119)CH1500mVCH25.
00VCH42.
00AM2.
0msACH1200mVT3.
96ms124TVOUTSWIL08716-029Figure29.
OutputShort(ADP2120)CH1500mVCH2500mVM2.
0msACH2730mVT44.
4%1TTRKFB08716-030Figure30.
TrackingFunctionCH1500mVCH25.
00VCH42.
00AM2.
0msACH1560mVT–2.
08ms124TVOUTSWIL08716-031Figure31.
OutputShortRecovery(ADP2119)CH1500mVCH25.
00VCH42.
00AM2.
0msACH1560mVT–2.
12ms124TVOUTSWIL08716-032Figure32.
OutputShortRecovery(ADP2120)CH12.
0VCH22.
0VM400nsACH14.
12VT0.
0s12SYNCSWT08716-033Figure33.
Synchronizedto1MHzADP2119/ADP2120DataSheetRev.
A|Page12of24CH120.
0mVCH25.
00VCH4500mAM4.
0sACH4820mAT–40.
0ns124TVOUT(AC)SWIL08716-034Figure34.
PFMModeCH15.
0mVCH25.
00VCH4500mAM1.
0sACH24.
3VT–40.
0ns124TVOUT(AC)SWIL08716-035Figure35.
DiscontinuousConductionMode(DCM)CH15.
0mVCH25.
00VCH41.
0AM1.
0sACH24.
3VT–40.
0ns124TVOUT(AC)SWIL08716-036Figure36.
ContinuousConductionMode(CCM)80–80–64–48–32–16016324864200–200–160–120–80–40040801201601k10k100k1MMAGNITUDE(dB)PHASE(Degrees)FREQUENCY(Hz)CROSSFREQUENCY:124kHzPHASEMARGIN:46°08716-037Figure37.
ADP2119BodePlotatVIN=5V,VOUT=1.
0V,IO=2A,L=1H,COUT=2*22F80–80–64–48–32–16016324864200–200–160–120–80–40040801201601k10k100k1MMAGNITUDE(dB)PHASE(Degrees)FREQUENCY(Hz)CROSSFREQUENCY:105kHzPHASEMARGIN:47°08716-038Figure38.
ADP2119BodePlotatVIN=5V,VOUT=1.
2V,IO=2A,L=1.
5H,COUT=2*22F80–80–64–48–32–16016324864200–200–160–120–80–40040801201601k10k100k1MMAGNITUDE(dB)PHASE(Degrees)FREQUENCY(Hz)CROSSFREQUENCY:112kHzPHASEMARGIN:48°08716-039Figure39.
ADP2119BodePlotatVIN=5V,VOUT=1.
5V,IO=2A,L=1.
5H,COUT=22F+10FDataSheetADP2119/ADP2120Rev.
A|Page13of2480–80–64–48–32–16016324864200–200–160–120–80–40040801201601k10k100k1MMAGNITUDE(dB)PHASE(Degrees)FREQUENCY(Hz)CROSSFREQUENCY:99kHzPHASEMARGIN:52°08716-040Figure40.
ADP2119BodePlotatVIN=5V,VOUT=1.
8V,IO=2A,L=1.
5H,COUT=22F+10F80–80–64–48–32–16016324864200–200–160–120–80–40040801201601k10k100k1MMAGNITUDE(dB)PHASE(Degrees)FREQUENCY(Hz)CROSSFREQUENCY:107kHzPHASEMARGIN:49°08716-041Figure41.
ADP2119BodePlotatVIN=5V,VOUT=2.
5V,IO=2A,L=1.
5H,COUT=22F80–80–64–48–32–16016324864200–200–160–120–80–40040801201601k10k100k1MMAGNITUDE(dB)PHASE(Degrees)FREQUENCY(Hz)CROSSFREQUENCY:89kHzPHASEMARGIN:58°08716-042Figure42.
ADP2119BodePlotatVIN=5V,VOUT=3.
3V,IO=2A,L=1.
5H,COUT=22F80–80–64–48–32–16016324864200–200–160–120–80–40040801201601k10k100k1MMAGNITUDE(dB)PHASE(Degrees)FREQUENCY(Hz)CROSSFREQUENCY:87kHzPHASEMARGIN:48°08716-043Figure43.
ADP2120BodePlotatVIN=5V,VOUT=1.
0V,IO=1.
25A,L=1.
5H,COUT=22F+10F80–80–64–48–32–16016324864200–200–160–120–80–40040801201601k10k100k1MMAGNITUDE(dB)PHASE(Degrees)FREQUENCY(Hz)CROSSFREQUENCY:80kHzPHASEMARGIN:54°08716-044Figure44.
ADP2120BodePlotatVIN=5V,VOUT=1.
2V,IO=1.
25A,L=1.
5H,COUT=22F+10F80–80–64–48–32–16016324864200–200–160–120–80–40040801201601k10k100k1MMAGNITUDE(dB)PHASE(Degrees)FREQUENCY(Hz)CROSSFREQUENCY:67kHzPHASEMARGIN:51°08716-045Figure45.
ADP2120BodePlotatVIN=5V,VOUT=1.
5V,IO=1.
25A,L=2.
2H,COUT=22F+10FADP2119/ADP2120DataSheetRev.
A|Page14of2480–80–64–48–32–16016324864200–200–160–120–80–40040801201601k10k100k1MMAGNITUDE(dB)PHASE(Degrees)FREQUENCY(Hz)CROSSFREQUENCY:78kHzPHASEMARGIN:50°08716-046Figure46.
ADP2120BodePlotatVIN=5V,VOUT=1.
8V,IO=1.
25A,L=2.
2H,COUT=2*10F80–80–64–48–32–16016324864200–200–160–120–80–40040801201601k10k100k1MMAGNITUDE(dB)PHASE(Degrees)FREQUENCY(Hz)CROSSFREQUENCY:61kHzPHASEMARGIN:54°08716-047Figure47.
ADP2120BodePlotatVIN=5V,VOUT=2.
5V,IO=1.
25A,L=2.
2H,COUT=2*10F80–80–64–48–32–16016324864200–200–160–120–80–40040801201601k10k100k1MMAGNITUDE(dB)PHASE(Degrees)FREQUENCY(Hz)CROSSFREQUENCY:48kHzPHASEMARGIN:60°08716-048Figure48.
ADP2120BodePlotatVIN=5V,VOUT=3.
3V,IO=1.
25A,L=2.
2H,COUT=2*10FDataSheetADP2119/ADP2120Rev.
A|Page15of24FUNCTIONALBLOCKDIAGRAMNMOSCURRENTSENSEAMPLIFIERZERO-CROSSINGCOMPARATORPGNDPVINPMOSCURRENTSENSEAMPLIFIER0.
6VERRORAMPLIFIER0.
54VFBSLOPECOMPENSATIONOSCILLATORSKIPMODETHRESHOLDSKIPCOMPARATORSYNC/MODEPWMANDPROTECTIONLOGICCONTROLCLKSWENUVLOVINPFETNFETGNDTRKZCOMP0.
66VPGOODSOFTSTARTGmADP2119/ADP212008716-049Figure49.
FunctionalBlockDiagramADP2119/ADP2120DataSheetRev.
A|Page16of24THEORYOFOPERATIONTheADP2119/ADP2120arestep-down,dc-to-dcregulatorsthatuseafixedfrequency,peakcurrentmodearchitecturewithintegratedhigh-sideswitchandlow-sidesynchronousrectifier.
Thehighswitchingfrequencyandtiny10-lead,3mm*3mmLFCSP_WDpackageprovideasmallstep-downdc-to-dcregulatorsolution.
Theintegratedhigh-sideswitch(P-channelMOSFET)andsynchronousrectifier(N-channelMOSFET)yieldhighefficiencyatmedium-to-fullloadswhilelightloadefficiencyisimprovedusingthePFMmode.
TheADP2119/ADP2120supportinputvoltagesfrom2.
3Vto5.
5Vandregulatetheoutputvoltagedownto0.
6V.
TheADP2119/ADP2120arealsoavailablewithpresetoutputvoltageoptionsof3.
3V,2.
5V,1.
8V,1.
5V,1.
2V,and1.
0V.
CONTROLSCHEMETheADP2119/ADP2120useafixedfrequency,peakcurrentmodePWMcontrolarchitectureandoperateinPWMmodeformedium-to-fullloadsbutshifttoPFMmode(ifenabled)atlightloadstomaintainhighefficiency.
WhenoperatinginfixedfrequencyPWMmode,thedutycycleoftheintegratedswitchesisadjustedtoregulatetheoutputvoltage.
WhenoperatinginPFMmodeatlightloads,theswitchingfrequencyisadjustedtoregulatetheoutputvoltage.
TheADP2119/ADP2120operateinPWMmodewhentheloadcurrentisgreaterthanthepulse-skippingthresholdcurrent.
Atloadcurrentsbelowthisvalue,theregulatorsmoothlytransitionstothePFMmodeofoperation.
PWMMODEOPERATIONInPWMmode,theADP2119/ADP2120operateatafixedfrequency.
Atthestartofeachoscillatorcycle,theP-channelMOSFETswitchisturnedon,puttingapositivevoltageacrosstheinductor.
Currentintheinductorincreasesuntilthecurrentsensesignalcrossesthepeakinductorcurrentlevel,turnsofftheP-channelMOSFETswitch,andturnsontheN-channelMOSFETsynchronousrectifier.
Thisputsanegativevoltageacrosstheinductor,causingtheinductorcurrenttodecrease.
Thesynchronousrectifierstaysonfortherestofthecycleoruntiltheinductorcurrentreacheszero,whichcausesthezero-crossingcomparatortoturnofftheN-channelMOSFETaswell.
ThepeakinductorcurrentlevelissetbyVCOMP.
VCOMPistheoutputofatransconductanceerroramplifierthatcomparesthefeedbackvoltagewithaninternal0.
6Vreference.
PFMMODEOPERATIONWhenPFMmodeisenabled,theregulatorsmoothlytransitionstothevariablefrequencyPFMmodeofoperationwhentheloadcurrentdecreasesbelowthepulse-skippingthresholdcurrent.
Switchingcontinuesonlyasnecessarytomaintaintheoutputvoltagewithinregulation.
Whentheoutputvoltagedropsbelowregulation,thepartentersPWMmodeforafewoscillatorcyclestoincreasetheoutputvoltagebacktoregulation.
Duringthewaittimebetweenbursts,bothpowerswitchesareoff,andtheoutputcapacitorsuppliestheloadcurrent.
Becausetheoutputvoltagedipsandrecoversoccasionally,theoutputvoltagerippleinthismodeislargerthantherippleinthePWMmodeofoperation.
SLOPECOMPENSATIONSlopecompensationstabilizestheinternalcurrentcontrolloopoftheADP2119/ADP2120whenoperatingclosetoandbeyondthe50%dutycycletopreventsubharmonicoscillations.
Slopecompensationisimplementedbysumminganartificialvoltageramptothecurrentsensesignalduringtheon-timeoftheP-channelMOSFETswitch.
Thisvoltagerampdependsontheoutputvoltage.
Whenoperatingathighoutputvoltages,thereismoreslopecompensation.
Theslopecompensationrampvaluedeterminestheminimuminductorthatcanbeusedtopreventsubharmonicoscillations.
ENABLE/SHUTDOWNTheENinputpinhasaprecisionanalogthresholdof1.
2V(typical)with100mVofhysteresis.
Whentheenablevoltageexceeds1.
2V,theregulatorturnson,andwhenitfallsbelow1.
1V(typical),theregulatorturnsoff.
Toforcetheparttoautomaticallystartwheninputpowerisapplied,connectENtoVIN.
WhentheADP2119/ADP2120areshutdown,thesoftstartcapacitorisdischarged.
Thiscausesanewsoftstartcycletobeginwhenthepartisreenabled.
Aninternalpull-downresistor(1M)preventsanaccidentalenableifENisleftfloating.
INTEGRATEDSOFTSTARTTheADP2119/ADP2120includeintegratedsoftstartcircuitrytolimittheoutputvoltagerisetimeandreduceinrushcurrentatstartup.
Thesoftstarttimeisfixedat1024clockcycles.
Iftheoutputvoltageisprechargedpriortoturn-on,thepartpreventsreverseinductorcurrent(whichwoulddischargetheoutputcapacitor)bykeepingbothMOSFETsturnedoffuntilthesoftstartvoltageexceedsthevoltageontheFBpin.
DataSheetADP2119/ADP2120Rev.
A|Page17of24TRACKINGTheADP2119/ADP2120haveatrackinginput,TRK,thatallowstheoutputvoltagetotrackanothervoltage(mastervoltage).
ThetrackinginputisespeciallyusefulincoreandI/OvoltagetrackingforFPGAs,DSPs,andASICs.
Theinternalerroramplifierincludesthreepositiveinputs:theinternalreferencevoltage,thesoftstartvoltage,andtheTRKvoltage.
TheerroramplifierregulatestheFBvoltagetothelowestofthethreevoltages.
Totrackamastervoltage,tietheTRKpintoaresistordividerfromthemastervoltage.
Ifthetrackingfunctionisnotused,connecttheTRKpintoVIN.
OSCILLATORANDSYNCHRONIZATIONTosynchronizetheADP2119/ADP2120,driveanexternalclockattheSYNC/MODEpin.
Thefrequencyoftheexternalclockcanbeinthe1MHzto2MHzrange.
Duringsynchronization,theregulatoroperatesinCCMmodeonly,andtheswitchingfrequencyisinphasewiththeexternalclock.
CURRENTLIMITANDSHORT-CIRCUITPROTECTIONTheADP2119/ADP2120haveapeakcurrentlimitprotectioncircuittopreventcurrentrunaway.
Whentheinductorpeakcurrentreachesthecurrentlimitvalue,thehigh-sideMOSFETturnsoffandthelow-sideMOSFETturnsonuntilthenextcyclestarts.
Theovercurrentcounterincrementsduringthistime.
Iftheovercurrentcountercountexceeds10,thepartentershiccupmodeandboththehigh-sideMOSFETandlow-sideMOSFETareturnedoff.
Thepartremainsinthismodefor4096clockcyclesandthenattemptstorestartfromsoftstart.
Ifthecurrentlimitfaulthascleared,thepartresumesnormaloperation.
Otherwise,itreentershiccupmodeagainaftercounting10currentlimitviolations.
OVERVOLTAGEPROTECTION(OVP)TheoutputvoltageiscontinuouslymonitoredbyacomparatorthroughtheFBpin,whichisat0.
6V(typical)undernormaloperation.
ThiscomparatorissettoactivatewhentheFBvoltageexceeds0.
66V(typical),thusindicatinganoutputovervoltagecondition.
Ifthevoltageremainsabovethisthresholdfor16clockcycles,thehigh-sideMOSFETturnsoffandthelow-sideMOSFETturnsonuntilthecurrentthroughthelow-sideMOSFETreachesthelimit(0.
6Aforforcedcontinuousconductionmodeand0AforPFMmode).
Thereafter,boththeMOSFETsareheldintheoffstateuntilFBfallsbelow0.
54V(typical),atthispoint,thepartrestarts.
ThebehaviorofPGOODunderthisconditionisdescribedinthePowerGoodsection.
UNDERVOLTAGELOCKOUT(UVLO)UndervoltagelockoutcircuitryisintegratedintheADP2119/ADP2120.
Iftheinputvoltagedropsbelow2.
1V,thepartshutsdownandboththepowerswitchandsynchronousrectifierturnoff.
Whenthevoltagerisesagainabove2.
2V,thesoftstartperiodisinitiated,andthepartisenabled.
THERMALSHUTDOWNIftheADP2119/ADP2120junctiontemperaturesriseabove150°C,thethermalshutdowncircuitturnsofftheregulators.
Extremejunctiontemperaturescanbetheresultofhighcurrentoperation,poorcircuitboarddesign,and/orhighambienttemperature.
A25°Chysteresisisincludedsothatifthermalshutdownoccurs,thepartdoesnotreturntooperationuntiltheon-chiptemperaturedropsbelow125°C.
Whencomingoutofthermalshutdown,softstartisinitiated.
POWERGOOD(PGOOD)PGOODisanactivehigh,open-drainoutputandrequiresaresistortopullituptoavoltage.
AhighindicatesthatthevoltageontheFBpin(andthereforetheoutputvoltage)iswithin±10%ofthedesiredvalue.
AlowonthispinindicatesthatthevoltageontheFBpinisnotwithin±10%ofthedesiredvalue.
Thereisa16cyclewaitingperiodafterFBisdetectedasbeingoutofbounds.
ADP2119/ADP2120DataSheetRev.
A|Page18of24APPLICATIONSINFORMATIONADIsimPowerDESIGNTOOLTheADP2119/ADP2120aresupportedbyADIsimPowerdesigntoolset.
ADIsimPowerisacollectionoftoolsthatproducecompletepowerdesignsoptimizedforaspecificdesigngoal.
Thetoolsenabletheusertogenerateafullschematic,billofmaterials,andcalculateperformanceinminutes.
ADIsimPowercanoptimizedesignsforcost,area,efficiency,andpartscountwhiletakingintoconsiderationtheoperatingconditionsandlimitationsoftheICandallrealexternalcomponents.
FormoreinformationaboutADIsimPowerdesigntools,refertowww.
analog.
com/ADIsimPower.
Thetoolsetisavailablefromthiswebsite,anduserscanalsorequestanunpopulatedboardthroughthetool.
ThissectiondescribestheselectionoftheexternalcomponentsfortheADP2119/ADP2120.
ThetypicalapplicationcircuitfortheADP2119isshowninFigure50.
10ENADP21191VIN9SYNC/MODE2PVIN8PGOOD3SW7TRK4PGND6FB5GNDR210kVIN5VCIN22FX5R6.
3VCOUT22FX5R6.
3VC10.
1FR110RBOT15kVOUT2.
5V2AL1.
5HRTOP47.
5k08716-050Figure50.
TypicalApplicationCircuitOUTPUTVOLTAGESELECTIONTheoutputvoltageoftheadjustableversioncanbesetbyanexternalresistivevoltagedivider,andthefollowingequationcalculatestheoutputvoltage.
)(10.
6BOTTOPOUTRRV+*=TolimittheoutputvoltageaccuracydegradationduetoFBbiascurrent(0.
1Amaximum)tolessthan0.
5%(maximum),ensurethatRBOTislessthan30k.
INDUCTORSELECTIONTheinductorvalueisdeterminedbytheoperatingfrequency,inputvoltage,outputvoltage,andripplecurrent.
Asmallinductorvalueleadstoalargerinductorcurrentrippleandprovidesafastertransientresponse;however,itdegradesefficiency.
Alargeinductorvalueleadstoasmallercurrentrippleandgoodefficiencybutslowsthetransientresponse.
Asaguideline,theinductorcurrentripple,ΔIL,istypicallysetto1/3ofthemaximumloadcurrenttrade-offbetweenthetransientresponseandefficiency.
Theinductorvaluecanbecalculatedusingthefollowingequation:()SLOUTINfIDVVL**=Δwhere:VINistheinputvoltage.
VOUTistheoutputvoltage.
ΔIListheinductorcurrentripple.
Disthedutycycle.
D=VOUT/VIN.
Theregulatorusesslopecompensationinthecurrentlooptopreventsubharmonicoscillationswhenthedutycycleislargerthan50%.
Theinternalslopecompensationlimitstheminimuminductorvalue.
Thenegativecurrentlimit(0.
6A)alsolimitstheminimuminductorvalue.
Theinductorcurrentripple(ΔIL)calculatedbytheselectedinductorshouldnotexceed1.
2A.
Thepeakinductorcurrentshouldbekeptbelowthepeakcurrentlimitthresholdvalueandcanbecalculatedfrom2LOPEAKIII+=Ensurethatthermscurrentoftheselectedinductorisgreaterthanthemaximumloadcurrentandthatitssaturationcurrentisgreaterthanthepeakcurrentlimitoftheregulator.
OUTPUTCAPACITORSELECTIONTheoutputvoltageripple,loadsteptransient,andloopstabilitydeterminetheoutputcapacitorselection.
TheESRandthecapacitancedeterminetheoutputripple.
**+*=SOUTLOUTfCESRIV81Theloadtransientresponsedependsontheinductor,theoutputcapacitor,andthecontrolloop.
TheADP2119/ADP2120haveintegratedloopcompensationtoprovideasimplepowersolutiondesign.
Table5andTable6showthetypicalrecommendedinductorsandcapacitorsfortheADP2119/ADP2120.
X5RorX7Rceramiccapacitorsarehighlyrecommended.
Table5.
RecommendedLandCOUTValuesfortheADP2119VIN(V)VOUT(V)L(H)COUT(F)3.
31.
0122+223.
31.
2122+223.
31.
5122+103.
31.
81223.
32.
512251.
0122+2251.
21.
522+2251.
51.
522+1051.
81.
522+1052.
51.
52253.
31.
522DataSheetADP2119/ADP2120Rev.
A|Page19of24Table6.
RecommendedLandCOUTValuesfortheADP2120VIN(V)VOUT(V)L(H)COUT(F)3.
31.
01.
522+103.
31.
21.
522+103.
31.
51.
522+103.
31.
81.
510+103.
32.
51.
510+1051.
01.
522+1051.
21.
522+1051.
52.
222+1051.
82.
210+1052.
52.
210+1053.
32.
210+10Higherorlowerinductorandoutputcapacitorvaluescanbeusedintheregulator,butthesystemstabilityandloadtransientperformanceneedtobechecked.
Theminimumoutputcapacitoris22FfortheADP2119and10FfortheADP2120,andtheinductorrangeis1Hto3.
3H.
Table7.
RecommendedInductorsManufacturerPartNumberSumidaCDRH5D18BHPNP,CDR6D23MNNPTOKODE4518C,D62LCBCoilcraftLPS5030,LPS5015Table8.
RecommendedCapacitorsManufacturerPartNumberDescriptionMurataGRM31CR60J226KE1922F,6.
3V,X5R,1206MurataGRM319R60J106KE1910F,6.
3V,X5R,1206TDKC3216X5R0J226M22F,6.
3V,X5R,1206TDKC3216X5R0J106M10F,6.
3V,X5R,1206INPUTCAPACITORSELECTIONTheinputcapacitorreducestheinputvoltageripplecausedbytheswitchcurrentonPVIN.
PlacetheinputcapacitorascloseaspossibletothePVINpin.
A10For22Fceramiccapacitorisrecommended.
Thermscurrentratingoftheinputcapacitorshouldbelargerthancalculatedbythefollowingequation:)1(DDIIORMS**=VOLTAGETRACKINGTheADP2119/ADP2120includeatrackingfeaturethatallowstheoutput(slavevoltage)tobeconfiguredtotrackanexternalvoltage(mastervoltage),asshowninFigure51.
ADP2119/ADP2120TRKFBVMASTERRTRKBRTRKTRBOTRTOPVSLAVE08716-051Figure51.
VoltageTrackingAcommonapplicationiscoincidenttracking(seeFigure52).
Coincidenttrackinglimitstheslaveoutputvoltagetobethesameasthemastervoltageuntilitreachesregulation.
ConnecttheTRKpintoaresistordividerfromthemastervoltage.
Forcoincidenttracking,setRTRKT=RTOPandRTRKB=RBOT.
VOLTAGETIMEVMASTERVSLAVE08716-052Figure52.
CoincidentTrackingRatiometrictrackingisshowninFigure53.
Theslaveoutputislimitedtoafractionofthemastervoltage.
Inthisapplication,theslaveandmastervoltagesreachthefinalvalueatthesametime.
Theratiooftheslaveoutputvoltagetothemastervoltageisafunctionofthetwodividers(seethefollowingequation).
TRKBTRKTBOTTOPMASTERSLAVERRRRVV++=11VOLTAGETIMEVMASTERVSLAVE08716-053Figure53.
RatiometricTrackingADP2119/ADP2120DataSheetRev.
A|Page20of24TYPICALAPPLICATIONCIRCUITS10ENADP21191VIN9SYNC/MODE2PVIN8PGOOD3SW7TRK4PGND6FB5GNDR210kVIN5VCIN22FX5R6.
3VCOUT222FX5R6.
3VCOUT122FX5R6.
3VC10.
1FR110RBOT10kVOUT1.
2V2AL1.
5HRTOP10kL:CDRH5D18BHPNP-1R5MSUMIDACIN,COUT1,COUT2:GRM31CR60J226KE19MURATA08716-054Figure54.
1.
2V,2A,Step-DownRegulator,ForcedContinuousConductionMode(ADP2119)10ENADP21191VIN9SYNC/MODE2PVIN8PGOOD3SW7TRK4PGND6FB5GNDR210kVIN5VCIN22FX5R6.
3VCOUT222FX5R6.
3VCOUT110FX5R6.
3VC10.
1FR110RBOT10kVOUT1.
8V2AL1.
5HRTOP20kL:CDRH5D18BHPNP-1R5MSUMIDACIN,COUT2:GRM31CR60J226KE19MURATACOUT1:GRM319R60J106KE19MURATA08716-055Figure55.
1.
8V,2A,Step-DownRegulator,EnablePFMMode(ADP2119)DataSheetADP2119/ADP2120Rev.
A|Page21of2410ENADP21191VIN9SYNC/MODE2PVIN8PGOOD3SW7TRK4PGND6FB5GNDR210kVIN5VEXTERNALCLOCKCIN22FX5R6.
3VCOUT22FX5R6.
3VC10.
1FR110RBOT15kVOUT2.
5V2AL1.
5HRTOP47.
5kL:CDRH5D18BHPNP-1R5MSUMIDACIN,COUT:GRM31CR60J226KE19MURATA08716-056Figure56.
2.
5V,2A,Step-DownRegulator,SynchronizedtoExternalClock(ADP2119)10ENADP21201VIN9SYNC/MODE2PVIN8PGOOD3SW7TRK4PGND6FB5GNDR210kVIN5VCIN22FX5R6.
3VCOUT210FX5R6.
3VCOUT122FX5R6.
3VC10.
1FR110RBOT10kRTRKB10kRTRKT15kVOUT1.
5V1.
25AL2.
2HRTOP15kL:LPS5030-222MLBCOILCRAFTCIN,COUT1:GRM31CR60J226KE19MURATACOUT2:GRM319R60J106KE19MURATAVMASTER08716-057Figure57.
1.
5V,1.
25A,Step-DownRegulator,TrackingMode(ADP2120)10ENADP21201VIN9SYNC/MODE2PVIN8PGOOD3SW7TRK4PGND6FB5GNDR210kVIN5VCIN22FX5R6.
3VCOUT210FX5R6.
3VCOUT122FX5R6.
3VC10.
1FR110RBOT10kVOUT1.
2V1.
25AL1.
5HRTOP10kL:CDRH5D18BHPNP-1R5MSUMIDACIN,COUT1:GRM31CR60J226KE19MURATACOUT2:GRM319R60J106KE19MURATA08716-058Figure58.
1.
2V,1.
25A,Step-DownRegulator,ForcedContinuousConductionMode(ADP2120)ADP2119/ADP2120DataSheetRev.
A|Page22of24OUTLINEDIMENSIONS2.
482.
382.
230.
500.
400.
30TOPVIEW101650.
300.
250.
20BOTTOMVIEWPIN1INDEXAREASEATINGPLANE0.
800.
750.
701.
741.
641.
490.
20REF0.
05MAX0.
02NOM0.
50BSCEXPOSEDPAD3.
103.
00SQ2.
90PIN1INDICATOR(R0.
15)FORPROPERCONNECTIONOFTHEEXPOSEDPAD,REFERTOTHEPINCONFIGURATIONANDFUNCTIONDESCRIPTIONSSECTIONOFTHISDATASHEET.
COPLANARITY0.
0802-27-2012-BFigure59.
10-LeadLeadFrameChipScalePackage[LFCSP_WD]3mm*3mmBody,VeryVeryThin,DualLead(CP-10-9)DimensionsshowninmillimetersORDERINGGUIDEModel1OutputCurrentTemperatureRangeOutputVoltagePackageDescriptionPackageOptionBrandingADP2119ACPZ-R72A40°Cto+125°CADJ10-LeadLFCSP_WDCP-10-9LFLADP2119ACPZ-1.
0-R72A40°Cto+125°C1.
0V10-LeadLFCSP_WDCP-10-9LEVADP2119ACPZ-1.
2-R72A40°Cto+125°C1.
2V10-LeadLFCSP_WDCP-10-9LFKADP2119ACPZ-1.
5-R72A40°Cto+125°C1.
5V10-LeadLFCSP_WDCP-10-9LFMADP2119ACPZ-1.
8-R72A40°Cto+125°C1.
8V10-LeadLFCSP_WDCP-10-9LFNADP2119ACPZ-2.
5-R72A40°Cto+125°C2.
5V10-LeadLFCSP_WDCP-10-9LFPADP2119ACPZ-3.
3-R72A40°Cto+125°C3.
3V10-LeadLFCSP_WDCP-10-9LFRADP2120ACPZ-R71.
25A40°Cto+125°CADJ10-LeadLFCSP_WDCP-10-9LEWADP2120ACPZ-1.
0-R71.
25A40°Cto+125°C1.
0V10-LeadLFCSP_WDCP-10-9LFSADP2120ACPZ-1.
2-R71.
25A40°Cto+125°C1.
2V10-LeadLFCSP_WDCP-10-9LFTADP2120ACPZ-1.
5-R71.
25A40°Cto+125°C1.
5V10-LeadLFCSP_WDCP-10-9LFUADP2120ACPZ-1.
8-R71.
25A40°Cto+125°C1.
8V10-LeadLFCSP_WDCP-10-9LFVADP2120ACPZ-2.
5-R71.
25A40°Cto+125°C2.
5V10-LeadLFCSP_WDCP-10-9LFWADP2120ACPZ-3.
3-R71.
25A40°Cto+125°C3.
3V10-LeadLFCSP_WDCP-10-9LFXADP2119-EVALZEvaluationBoardADP2120-EVALZEvaluationBoard1Z=RoHSCompliantPart.
DataSheetADP2119/ADP2120Rev.
A|Page23of24NOTESADP2119/ADP2120DataSheetRev.
A|Page24of24NOTES2010–2012AnalogDevices,Inc.
Allrightsreserved.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
D08716-0-8/12(A)