n"E.44BB. p@pAA B4B4Bp4BH4B 4B4B4B 4B4B A4BA4BA4B B4BHB4BpB4BB BBABpAB@BBpBB B4B4pB4HB4 B4A4A4 A44 444 4H4p4VREFVCCOUTBVCPGNDOUTAGNDILIMSSRAMPCTRTCLK/LEBEAOUTNIINV+)C:\psimwork\PWM-IC\UC3823_25\UC3823B.sch UC2825A.sch DDQ}?V.TIMEh㈵>{Gz?GroundR DIODESSWIVDC&COMP'SUM2(SUM2P/ANDGATE0ORGATE1NOTGATE2 NANDGATE4SRFFEVSENGONCTRLJCTOPQVVCVSSIVCCS\ICCCS`IDCORGATE3 OP_AMP_2z_CCCCCC??%D hVDC1ffffff@|@-rC*CӍCCCaC??2.8 Courier NewSA&SAA&A`AA_pC CC CCC??%D hVDC4333333@|B-}Cd CC??GD hON2kAC B4CAC??1D hR4R@`-|w1BCVBn#C`?bBC??10k Courier NewSA&SAA&ARAAR4B AC B??'BABACAB??@NCBC CC C?&D hCOMP3LDCDC@ DC??0D hOR1MDCDD@ DD??/D hAND1MDDDD@ D D??/D hAND2MDC*DC#DC??/D hAND3MDCDCDC??1D hNOT1MDC*D D#DD??D hOR31LD D'DD@!DD??0D hOR2BDDDDDD??ABD DD DD D?? ABDDDDDD?? ABDDD DD D?? ABDDD DD@D??ppA\;DCHDCADC?4"D hSRFF2PNM/DC;DC@5DC??/D hAND4M*DC/DD,DC??1D hNOT2B*DC/DC,DC?? AB,DC/DC-DC??@B*DD,DD@+DD??@B,DD;DD4DD??AMJDCWDDPDC??D hOR32MDCDD@DC??1D hNOT3MDCDC@DC??1D hNOT44DCDD@DC??4DCDC@DC?? BCCDC@DC??ppABCCC DCD??ABC DD D@D D??ppABDCDCDC??@BDCDDDD?? BBDDDDDD??@BDCDCDC?? A BDCDDDC??AB DDDDDD?? AuCDLD5D˝ChD??PWM_IN Courier NewS&SA&APABDDJDD@0DD??BB%DDDDD D??AN3C DCDCD??&D hCOMP4r6C DCDC@ D??(8D hSUMP1a?a?_8C DCDC D??%D hVDC6?}JvCDkC"DCD??1.25 Courier New&&&A&A&A8B?CDCDC@D??@B@zCDCDCD??B`AHCDzCDaCD??E&D hVSEN3A"0?4DD AD D??!`ECDC"DCD??E&D hVSEN4A"0?4D AD D??)4%D A*D 'D??+4*D A/D ,D??-afC9DCCDuC>D?Q'D hVVCVS2A"0?zCd;DC@DC>D??1 Courier New&&&@&A&@A"0gfC*DzC6DpC@0D? -D hD6`-BpCCDpCEDpC@DD??@NCWDCaDC\D??&D hCOMP5NChDCrDCmD??&D hCOMP6NCzDCDCD??&D hCOMP7_zCmDCrDCpD??%D hVDC8333333?|$CpDCMuDCrD??1.2 Courier NewSA&SAA&A`AABfCYDfCkDfC@bD?? B`4CTDfC^DMCYD??E&D hVSEN5A"0?`RCwDCDkC|D??E&D hVSEN6A"0?BBzDRCzD CzD??HBH4MD ARD OD??4TD AYD WD??BDDD\DD@5D??C|*|C^SDaECNVDޕC+UD??Current Limit Courier New/Q&/QB&A0QB{*H|CdDIWCEhDCxfD?? Over Current Courier NewSA&SAB&ARAB|BxC]bwD?CzDهC*/yD??Restart Delay Courier New/Q&/QB&A0QB\ DuDDDDzD??4"D hSRFF3PNMCwD DD@D|D??/D hAND5MCpDCzDCuD?1D hNOT5B DpD DwD DsD??pApMC|DCDCD??1D hNOT6BCpD DpD@DpD??ABCpDCpDCpD?? ALCkDCuDCpD??0D hOR3BCrDCrDCrD??@B CrDCDC D??\\BN"DWD/DaD(D\D??&D hCOMP8`DTD"D^D@DYD??E&D hVSEN7A"0?` D^D%DkD"DdD??&D hVDC10@zL&DdbDI(DfD'DdD??5 Courier New&&&@&A'@M /DpD;DzD@5DuD??/D hAND6B"/D\D/DrD/D@gD??44BL$@DrDMD|DFDwD??0D hOR4B%;DuD@DuD>DuD?? A B&>DzD@DzD@?DzD??@B)>DzD>DD>DD?? B\.MDuDYDD@SDzD??4"D hSRFF4PNL0YDTDaDYD@]DWD??GD hON3h1aDRDhD^DdD@XD.D hSS3`-_2cDaDhDmDfD@gD??`%D hIDC2Mb0?};\DwhDdDـlDr`D=|jD??250u Courier New&&&A&A&A2g6kDaDpDmDmD@gD?? -D hD7`-_=cD@DhDMDfDFD??`%D hIDC3?̔>{_]D%yDD2aD]HD_D}FD??9u Courier New&&&A&A'A=BIuDJDuDMDuDKD??@BXDkDDwDD@qD??ABYDwDDwD@DwD??@4cD AD @D?? Ne\C@DC@DuCD??&D hCOMP9qf4CD\CDHCD??'7D hSUM2*?L{BVSCD{cCDji[CFD??-6 Courier New&&&A&A&AfLBiHCDHCDHC D??@`nCDHCD/CD??E&D hVSEN8A"0?axCDCDCD??Q'D hVVCVS3A"0ffffff@|nCDCNDACD??5.1 Courier NewSA&SAA&A`AAxA"0B|CDCDC D??@BCDCDCD?? ANDD DDDD??2D hNAND1`CDCDCD??E&D hVSEN9A"0?OD@DD@D@DD??&D hCOMP10BD@DD@DD@D?? AxV D2DNDyDoDD?? Vref GOOD Courier NewK&KB&AKBs/CcPDC/DObC6D??UVLO Courier New&&&A&A&ABD@DDDDD?? AB>DD>DD>DD??AB;DC;DD;DD??ppABHDCJDC@IDC??@NCDCDC@D??JD hCTOP1g]kD@DpDMDmDFD?? -D hD9`-BkBODCODCOD??CCCBr DD>DD/DD??ppBBvCD>DDDD??**CaHBCBCBC??Q'D hVVCVS4A"0@zB,Cb6B(?C#B5C??3 Courier New&&&@&A&@A"0aC\C4CC%CpC?Q'D hVVCVS5A"0@z/CgC7 8CnxC4CpC??4 Courier New&&&@&A&@A"0arD@DzDJD@vDED?Q'D hVVCVS6A"0@zcyD DDyzDFDzDED??6 Courier New1yh1yh@@yh@A"0BzDHDzDMDzDJD?? ABuDMDzDMDwDMD?? ABHBCHBCHBC??@B CC4CC*CC?? ABC DC DC D?? ABpC6DpC9DpC7D??@B\CD\CD\CD??ABHCD\CDRCD?? 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BBCCCCCC??ABCCCCCC??@BCCCCCC??@BCCCCCC??ABCCCCCC??ABC CCCCC??99CBBBB CB C??ABB\C C\CC\C??ABC>CCCCC??BBCCCCCC??@BCCCCCC??44BBCCDC@DC??BBDCJDC4DC??BBJDCJDCJDC??BBDCDCDC??BBC CC CC C??BBzCCCCCC??ABBCBCBC?? ABpCDpC*DpC"D??ABCDCDC@D??ABC*DpC*D9C*D??\\BBC;DC;DC;D??BBpCDCDCD??BBDDDDDD?? AB'D D'DD'DD?? A BD D'D D"D D??ABfDMDfDODfD@ND??@BfDaDmDaDiDaD??ppABfDmDmDmDiDmD??ppAB YDWDYDwDYD@gD??BB fDMDmDMDiDMD??ppABfD@DmD@DiD@D??pApBCCCC CC?? AB4CCCCCC?? CB$ DkDDkDDkD??AB& DDDDDD??AB'DODDWDD@SD??pApB(CODDOD DOD??HHBB+C@DCDCD??@B,CDCDCD?? AB-CDC@DCD?? AB5BDBDBD??AB8B@DBDBD??BB9HBDBDBD??ppAB:BDBDBD??AB;BDBDBD??ppAB>CDCDC@D??AB?HCDCDkCD?? BBACDCDCD??ABDC@DC@DC@D??ABJ ACBCpBC??HHBBM A@DB@D4B@D?? BBS AODBODpBOD??HHBBU AWD4CWDBWD??BB^ A'DB'D4B'D?? BB` A,DB,D4B,D?? BBb ADpCDBD??BBd ADHCDBD??BBe ADBD4BD?? BBffD;DuD;DmD;D??ABjfDODfDRDfDPD??@BkfD^DfDaDfD_D??@BnfD;DfD@DfD>D?? ABpuD;DuD@DuD>D?? ABqCDDDCD??ABt ABABAB?? AByABBBBB?? BB{BBHCBCB??44BB~BRCB\CBWC??@BBCBCBC??@BBC CCBC??ppABBC CCBC??pApBBCBCBC??@BB\CBCBC??HHBB C>CC>CC>C??CBBDCD\CD?? CBCmDCmDCmD?? BBfCkDCkDCkD?? BBCDCDCD??\\BBC|DC|DC|D??ABC@DCCDCAD??@BpCCDCCDzCCD?? A BpCEDCEDzCED?? AB CC4CC*CC?? AB4CzC4CC4CC??@8CCDCHDCED??GND8 CDHCD4CD??GND8CDC"DC D??GND8 CYD4C^D C\D??GND8 DYDD^DD\D??GNDB CC CC CC??pApBBC CCCC??AB CCRCC9CC??A8 CC4CC CC??GND8*CCRCC>CC??GND8 ACHBCAC??GND84CC\CCHCC??GND8A*CB>CHB4C??GND8 CCHCC4C C??GND8BDCDCD??GND8CDCDCD??GND8*C|DRCD>CD??GND8 CD4CD C@D??GND8CDCDCD??GND8mDkDwDpDrDmD??GND8zDJDDODDMD??GND9CDCDC@D??UVLO9 ACHBCAC??UVLO94C\C\CpCHCfC??UVLO9zD@DDEDDCD??UVLOBB@DC@DB@D?? BBC@DCDCD??ABDODfDOD>DOD?? ClACBC\BC??2D hR11R-C6?`-B ACACAC?? ABBCBCBC??@BACACAC?? ABACBCpBC??A4D@DDD@DD??BD D>D D,D D??BB>D D>DzD>DMD??44CBDDD DDD??ABDDDDDD??ABJDCJDDJD D??HHBB DD DkD DAD??%%CBrDDuDDsDD??@BrDCuDCsDC??@B>D DrD D@XD D??BB mDCuDC@qDC??ppA4 DDD@D@DD??4DDDD@DD??BCDDD2DD??CLuDCDC@{DC??0D hOR5LuDCDD@{DC??0D hOR6BmDCuDC@qDC??ppABmDCmDCmDC??ABWDCmDC@bDC??44BB#rDDrD DrDD??ppBB$rDCrDDrDC??A%P8DUDn~DD[DD??J or N Package; DW Package Courier New}+þK}+CKA|+Cu&@DDTODD GDD??1: INV Courier New(K(AKA(At'@D@DfLD웲DFDmD??2: NI Courier NewKAKAAw(Ӓ@DDEXTDDuJDD?? 3: EAOUT Courier Newp!¾Kp!BKAp!By)@D@DYD웷D?3MDmD?? 4: CLK/LEB Courier NewI¾KIBKAIBt*@DDfLDDFDD??5: RT Courier NewKAKAAt+@D@DfLD웼DFDmD??6: CT Courier NewKAKAAv,@DDQDDb&IDD??7: RAMP Courier NewB ¾KB BKAB Bt-@D@DfLDDFDmD??8: SS Courier NewKAKAAv.(eD@DvDDNnDmD??9: ILIM Courier New{ A{ AAv/((cDDttDDkDD??10: GND Courier NewB ¾KB BKAB Bw0cD@DrEwD웼DbmDmD?? 11: OUTA Courier Newp!¾Kp!BKAp!Bw1cDDrEwDDbmDD?? 12: PGND Courier Newp!¾Kp!BKAp!Bu2"bD@D8qD웷D-MjDmD??13: VC Courier New(K(AKA(Aw3cDDrEwDDbmDD?? 14: OUTB Courier Newp!¾Kp!BKAp!B4;DD{D۩D٠[DD??DIL-16, SOIC-16 (TOP VIEW) Courier New}+þK}+CKA|+Cv5.mcDbDtDoDlDyD??15: VCC Courier NewB ¾KB BKAB Bw6cDDrEwDDbmDD?? 16: VREF Courier Newp!¾Kp!BKAp!Bt7pD qDp!ӂD??Note: Courier Newp&pA&ApA8D\CD\CCD??<- All functions of the IC are modelled, including the UVLO, Courier Newn&nC&AnC9nD^$CsD#;CpD??:- This model applies to UC1823B (Ta = -50 oC to +125 oC), Courier NewB f&B fC&AB fC?HD`CD`ICӂD??9current limiting, leading-edge blanking, and soft start. Courier New b& bC&A bC@,RDb{CDL|CD??DUC2823B (Ta = -40 oC to +85 oC), and UC3823B (Ta = 0 oC to +70 oC). Courier New4&4C&A4CDnCnB+/DA