Version 4 SHEET 1 1688 1092 WIRE -432 -576 -464 -576 WIRE 1184 -576 1152 -576 WIRE -464 -544 -464 -576 WIRE 1184 -544 1184 -576 WIRE -1216 -448 -1264 -448 WIRE -1168 -448 -1216 -448 WIRE -1040 -448 -1088 -448 WIRE -800 -448 -1040 -448 WIRE -1216 -416 -1216 -448 WIRE -1216 -320 -1216 -352 WIRE -1040 -320 -1040 -448 WIRE -304 -256 -352 -256 WIRE -208 -256 -304 -256 WIRE -112 -256 -208 -256 WIRE 544 -256 -112 -256 WIRE 624 -256 544 -256 WIRE 656 -256 624 -256 WIRE 768 -256 720 -256 WIRE 848 -256 768 -256 WIRE 880 -256 848 -256 WIRE 992 -256 960 -256 WIRE 1056 -256 992 -256 WIRE 544 -240 544 -256 WIRE 848 -240 848 -256 WIRE 992 -240 992 -256 WIRE -1040 -224 -1040 -256 WIRE -304 -224 -304 -256 WIRE -208 -224 -208 -256 WIRE -112 -176 -112 -256 WIRE -80 -176 -112 -176 WIRE 16 -176 -16 -176 WIRE 624 -176 624 -256 WIRE 656 -176 624 -176 WIRE 768 -176 768 -256 WIRE 768 -176 736 -176 WIRE -1328 -144 -1408 -144 WIRE -1136 -144 -1248 -144 WIRE -1104 -144 -1136 -144 WIRE -976 -144 -1024 -144 WIRE 992 -144 992 -176 WIRE -80 -128 -80 -160 WIRE 16 -128 16 -176 WIRE 544 -128 544 -160 WIRE 544 -128 16 -128 WIRE 624 -128 544 -128 WIRE 672 -128 624 -128 WIRE 768 -128 720 -128 WIRE 848 -128 848 -160 WIRE 848 -128 768 -128 WIRE 880 -128 848 -128 WIRE -1408 -112 -1408 -144 WIRE -304 -112 -304 -144 WIRE -208 -112 -208 -160 WIRE 624 -112 624 -128 WIRE 768 -112 768 -128 WIRE -128 -48 -160 -48 WIRE -16 -48 -64 -48 WIRE 80 -48 -16 -48 WIRE 336 -48 144 -48 WIRE 624 -16 624 -48 WIRE 768 -16 768 -48 WIRE -1408 0 -1408 -32 WIRE -1136 32 -1136 -144 WIRE -976 32 -1136 32 WIRE -224 32 -336 32 WIRE -160 32 -160 -48 WIRE -160 32 -224 32 WIRE -112 32 -160 32 WIRE -16 32 -16 -48 WIRE -16 32 -48 32 WIRE 80 32 -16 32 WIRE 192 32 144 32 WIRE 336 32 336 -48 WIRE 336 32 272 32 WIRE -160 48 -160 32 WIRE -16 48 -16 32 WIRE -224 80 -224 32 WIRE -112 96 -112 48 WIRE 80 144 80 48 WIRE -1184 160 -1248 160 WIRE -736 160 -816 160 WIRE -160 160 -160 112 WIRE -16 160 -16 128 WIRE -224 176 -224 144 WIRE -224 288 -224 256 WIRE -1248 304 -1248 160 WIRE 16 304 -352 304 WIRE -1456 352 -1536 352 WIRE -1312 352 -1376 352 WIRE -304 384 -352 384 WIRE -256 384 -304 384 WIRE -112 384 -176 384 WIRE -80 384 -112 384 WIRE 16 384 16 304 WIRE 16 384 -16 384 WIRE -304 416 -304 384 WIRE -112 432 -112 384 WIRE -80 432 -112 432 WIRE 992 432 896 432 WIRE 1040 432 992 432 WIRE -80 448 -128 448 WIRE 16 448 16 384 WIRE 16 448 -16 448 WIRE -1248 464 -1248 400 WIRE -816 464 -816 160 WIRE 896 464 896 432 WIRE 992 464 992 432 WIRE 848 480 800 480 WIRE -304 512 -304 480 WIRE -64 528 -64 496 WIRE 624 528 592 528 WIRE 832 528 688 528 WIRE 848 528 832 528 WIRE 992 560 992 528 WIRE -1248 576 -1248 544 WIRE -1008 576 -1248 576 WIRE 624 576 624 544 WIRE 896 576 896 544 WIRE 992 576 896 576 WIRE 1056 576 992 576 WIRE -816 592 -816 544 WIRE -1248 608 -1248 576 WIRE 16 608 16 448 WIRE 896 608 896 576 WIRE 992 608 992 576 WIRE -816 624 -816 592 WIRE 832 624 832 528 WIRE 832 624 768 624 WIRE 848 624 832 624 WIRE 704 672 608 672 WIRE 800 672 800 480 WIRE 800 672 704 672 WIRE 848 672 800 672 WIRE 16 688 16 672 WIRE 80 688 16 688 WIRE 192 688 80 688 WIRE 288 704 256 704 WIRE 384 704 288 704 WIRE 608 704 608 672 WIRE 608 704 544 704 WIRE -1248 720 -1248 688 WIRE -304 720 -368 720 WIRE -256 720 -304 720 WIRE -128 720 -176 720 WIRE 192 720 -128 720 WIRE 896 720 896 688 WIRE 992 720 992 672 WIRE 992 720 896 720 WIRE 1040 720 992 720 WIRE 16 736 16 688 WIRE 80 736 80 688 WIRE 336 752 336 32 WIRE 384 752 336 752 WIRE 896 752 896 720 WIRE -304 768 -304 720 WIRE -128 768 -128 720 WIRE 192 768 192 736 WIRE 16 832 16 800 WIRE 80 832 80 800 WIRE 384 832 384 800 WIRE -304 864 -304 832 WIRE -128 864 -128 832 WIRE 336 864 336 752 WIRE 352 864 336 864 WIRE 464 912 464 800 WIRE 464 912 416 912 WIRE 288 928 288 704 WIRE 352 928 288 928 WIRE 368 960 368 928 WIRE -464 1088 -464 1056 WIRE -432 1088 -464 1088 WIRE 1184 1088 1184 1056 WIRE 1184 1088 1152 1088 FLAG 1056 576 Out IOPIN 1056 576 In FLAG 992 -144 COM FLAG 1056 -256 Ref IOPIN 1056 -256 In FLAG -336 32 Osc IOPIN -336 32 In FLAG -128 864 COM FLAG -352 384 Vfb IOPIN -352 384 In FLAG -352 304 Err IOPIN -352 304 In FLAG 16 832 COM FLAG -368 720 Ifb IOPIN -368 720 In FLAG -304 864 COM FLAG -304 512 COM FLAG -160 160 COM FLAG -128 448 2v5 FLAG -352 -256 Vcc IOPIN -352 -256 In FLAG 768 -16 COM FLAG 1040 432 Vcc IOPIN 1040 432 In FLAG 1040 720 Com IOPIN 1040 720 In FLAG 992 560 COM FLAG 880 -128 2v5 FLAG 592 528 Ref FLAG 80 832 COM FLAG -208 -112 COM FLAG 624 -16 COM FLAG 768 624 fault FLAG -304 -112 COM FLAG 624 576 COM FLAG -64 528 COM FLAG 368 960 COM FLAG -80 -128 COM FLAG 896 752 COM FLAG 192 768 COM FLAG 384 832 COM FLAG 704 672 T1 IOPIN 704 672 Out FLAG 80 144 COM FLAG -1040 -224 0 FLAG -800 -448 Osc IOPIN -800 -448 BiDir FLAG -1264 -448 Ref IOPIN -1264 -448 BiDir FLAG -1216 -320 0 FLAG -976 -144 Err IOPIN -976 -144 BiDir FLAG -736 160 Vcc IOPIN -736 160 Out FLAG -816 624 0 FLAG -1248 720 0 FLAG -1008 576 Ifb IOPIN -1008 576 Out FLAG -1536 352 Osc IOPIN -1536 352 In FLAG -816 592 Com FLAG -112 96 COM FLAG -16 160 COM FLAG -224 288 COM FLAG -1408 0 0 FLAG -976 32 Vfb IOPIN -976 32 Out FLAG -1184 160 Vref IOPIN -1184 160 In SYMBOL current -304 -224 R0 WINDOW 3 -40 -56 Left 0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 WINDOW 0 -40 0 Left 0 SYMATTR Value TBL(0 0 1 .2m) SYMATTR InstName I1 SYMBOL zener -224 -160 M180 WINDOW 0 32 64 Left 0 WINDOW 3 32 0 Left 0 SYMATTR InstName D1 SYMATTR Value 34V SYMBOL Digital\\schmtbuf -80 -240 R0 WINDOW 0 0 32 Left 0 WINDOW 3 0 -40 Left 0 WINDOW 38 48 32 Left 0 WINDOW 123 0 0 Left 0 SYMATTR InstName A1 SYMATTR Value Vt=8.2 Vh=0.3 SYMATTR Value2 Vhigh=2.5 Rout=1k SYMBOL res 528 -256 R0 SYMATTR InstName R1 SYMATTR Value 8e6 SYMBOL cap 608 -112 R0 WINDOW 0 32 8 Left 0 WINDOW 3 32 56 Left 0 SYMATTR InstName C1 SYMATTR Value 1p SYMBOL sw 752 -176 M270 WINDOW 0 40 88 VRight 0 WINDOW 3 40 32 VLeft 0 SYMATTR InstName S1 SYMATTR Value ref SYMBOL diode 720 -272 R90 WINDOW 0 -8 56 VRight 0 WINDOW 3 -8 0 VLeft 0 SYMATTR InstName D2 SYMATTR Value V65 SYMBOL cap 784 -112 M0 WINDOW 3 32 56 Left 0 WINDOW 39 -16 32 Right 0 WINDOW 0 32 8 Left 0 SYMATTR Value 1p SYMATTR SpiceLine Rpar=240 SYMATTR InstName C2 SYMBOL res 864 -144 R180 WINDOW 0 36 76 Left 0 WINDOW 3 36 40 Left 0 SYMATTR InstName R2 SYMATTR Value 240 SYMBOL res 976 -272 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R3 SYMATTR Value 280m SYMBOL cap 976 -176 M180 WINDOW 0 32 56 Left 0 WINDOW 3 32 8 Left 0 SYMATTR InstName C3 SYMATTR Value 10p SYMBOL cap -144 48 M0 WINDOW 3 32 56 Left 0 WINDOW 0 32 8 Left 0 SYMATTR Value 5p SYMATTR InstName C4 SYMBOL cap -288 416 M0 WINDOW 0 32 8 Left 0 WINDOW 3 32 56 Left 0 SYMATTR InstName C5 SYMATTR Value 1p SYMBOL res -160 368 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R4 SYMATTR Value 165k SYMBOL cap -16 368 R90 WINDOW 0 0 32 VBottom 0 WINDOW 3 32 32 VTop 0 WINDOW 39 -40 32 VCenter 0 SYMATTR InstName C6 SYMATTR Value 1p SYMATTR SpiceLine Rpar=10G SYMBOL Digital\\or -48 400 R0 WINDOW 0 -160 96 Left 0 WINDOW 38 -112 96 Left 0 WINDOW 3 48 144 Right 0 WINDOW 123 48 176 Right 0 WINDOW 39 48 208 Right 0 SYMATTR InstName A4 SYMATTR SpiceModel OTA SYMATTR Value Vhigh=6 Vlow=0.7 Isrc=1m Isink=-6m SYMATTR Value2 Rclamp=1 g=5 Rout=25k Cout=5p SYMATTR SpiceLine eaclk=A2 powerup=!V(fault,Com) SYMBOL cap -288 768 M0 WINDOW 0 32 8 Left 0 WINDOW 3 32 56 Left 0 SYMATTR InstName C7 SYMATTR Value 5p SYMBOL res -160 704 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R5 SYMATTR Value 75k SYMBOL cap -144 768 R0 WINDOW 0 32 8 Left 0 WINDOW 3 32 56 Left 0 SYMATTR InstName C8 SYMATTR Value 1p SYMBOL diode 32 608 M0 WINDOW 3 40 56 Left 0 WINDOW 0 40 24 Left 0 SYMATTR Value 2R SYMATTR InstName D3 SYMBOL diode 32 736 M0 WINDOW 3 41 40 Left 0 WINDOW 0 41 8 Left 0 SYMATTR Value 1R SYMATTR InstName D4 SYMBOL cap 64 736 R0 WINDOW 0 32 8 Left 0 WINDOW 3 40 32 Left 0 WINDOW 39 32 56 Left 0 SYMATTR InstName C9 SYMATTR Value 1p SYMATTR SpiceLine Rpar=1e6 SYMBOL Digital\\schmtinv 624 464 R0 WINDOW 0 0 32 Left 0 WINDOW 3 32 88 Left 0 WINDOW 38 48 32 Left 0 WINDOW 123 32 120 Left 0 SYMATTR InstName A6 SYMATTR Value Vt=4.8 Vh=.1 SYMATTR Value2 trise=200n SYMBOL sw 896 560 M180 WINDOW 0 32 88 Left 0 WINDOW 3 32 32 Left 0 SYMATTR InstName S2 SYMATTR Value Ho SYMBOL sw 896 704 M180 WINDOW 0 32 88 Left 0 WINDOW 3 32 32 Left 0 SYMATTR InstName S3 SYMATTR Value Lo SYMBOL cap 976 464 R0 WINDOW 3 32 56 Left 0 WINDOW 0 32 8 Left 0 SYMATTR Value 20p SYMATTR InstName C10 SYMBOL cap 976 608 R0 WINDOW 0 32 8 Left 0 WINDOW 3 32 64 Left 0 SYMATTR InstName C11 SYMATTR Value 20p SYMBOL Digital\\diffschmtbuf 192 640 R0 WINDOW 3 -36 -13 Left 0 SYMATTR Value Vt=0.1 Vh=0.1 Trise=10n Tfall=10n tripdt=5n SYMATTR InstName A5 SYMBOL Digital\\dflop 464 656 R0 WINDOW 3 -82 -46 Left 0 SYMATTR Value Trise=50n Tfall=50n tripdt=5n SYMATTR InstName A7 SYMBOL Digital\\and 384 832 R0 SYMATTR InstName A8 SYMBOL Digital\\buf1 80 -32 R0 WINDOW 38 48 32 Left 0 WINDOW 0 0 32 Left 0 WINDOW 3 0 0 Invisible 0 SYMATTR SpiceModel Counter SYMATTR InstName A3 SYMATTR Value cycles=2 Trise=10n Tfall=10n tripdt=5n SYMBOL cap -1056 -320 R0 SYMATTR InstName C12 SYMATTR Value 22.44n SYMBOL res -1072 -464 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R6 SYMATTR Value 9.77k SYMBOL cap -1232 -416 R0 SYMATTR InstName C13 SYMATTR Value 0.33u SYMBOL res -1008 -160 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R7 SYMATTR Value 10k SYMBOL voltage -816 448 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V1 SYMATTR Value 11.9 SYMBOL npn -1312 304 R0 SYMATTR InstName Q1 SYMATTR Value 2N2222 SYMBOL Digital\\schmtinv -112 -32 R0 WINDOW 3 -587 296 Invisible 0 SYMATTR Value Vhigh=5V Vt={(LT3845A_osc_high+LT3845A_osc_low)*0.5} Vh={(LT3845A_osc_high-LT3845A_osc_low)*0.5} Trise=10n Tfall=10n Rout=100m SYMATTR InstName A2 SYMBOL diode -128 -32 R270 WINDOW 0 32 32 VTop 0 WINDOW 3 0 32 VBottom 0 SYMATTR InstName D6 SYMATTR Value OscILim SYMBOL current -16 48 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName I2 SYMATTR Value 10m SYMBOL diode 144 -64 R90 WINDOW 0 0 32 VBottom 0 WINDOW 3 32 32 VTop 0 SYMATTR InstName D7 SYMATTR Value DIdeal SYMBOL diode -208 144 R180 WINDOW 0 24 72 Left 0 WINDOW 3 24 0 Left 0 SYMATTR InstName D8 SYMATTR Value DIdeal SYMBOL voltage -224 160 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 WINDOW 3 24 44 Left 0 SYMATTR InstName V2 SYMATTR Value {LT3845A_osc_low-1m} SYMBOL voltage -1408 -128 R0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V3 SYMATTR Value 2 SYMBOL res -1232 -160 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R8 SYMATTR Value 10k SYMBOL res -1264 448 R0 SYMATTR InstName R9 SYMATTR Value 0.75MEG SYMBOL res -1264 592 R0 SYMATTR InstName R10 SYMATTR Value 4.25k SYMBOL res -1360 336 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R11 SYMATTR Value 10k SYMBOL res 288 16 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R12 SYMATTR Value 1k TEXT 624 816 Left 0 !.model 1R d(Vfwd=1 Ron=1) TEXT 624 784 Left 0 !.model 2R d(Vfwd=1.3 Ron=2e6) TEXT 504 200 Left 0 !.model 34V d(Ron=.5 Vfwd=.5 Vrev=34 Rrev=22 Roff=1MEG) TEXT 504 232 Left 0 !.model ref sw(Vh=-11m Ilimit=100m) TEXT 504 328 Left 0 !.model Ho sw(Vt= .48 Vh=-.25 Ron=2 Roff=100k Vser=0.1) TEXT 504 360 Left 0 !.model Lo sw(Vt=-.52 Vh=-.25 Ron=6 Roff=300k) TEXT 504 168 Left 0 !.model V65 d(Vfwd=0.65 Ron=1 Roff=1MEG) TEXT 144 -528 Center 0 ;>> UC3845A <<\nLTspice A-Device Behavioral Model\nCopyright 2004 by analog@ieee.org TEXT -424 -448 Left 0 ;NOTES:\nUC3842A: for A1 Vt=13 Vh=3.0 and bypass A3 (delete)\nUC3843A: for A1 Vt=8.2 Vh=0.3 and bypass A3 (delete)\nUC3844A: for A1 Vt=13 Vh=3.0; for A3 cycles=2\nUC3845A: for A1 Vt=8.2 Vh=0.3; for A3 cycles=2 TEXT -1120 816 Left 0 !.tran 0 10m 0 100n TEXT 504 136 Left 0 !.model OscILim D(Vfwd=0.1 ilimit={LT3845A_osc_discharge} Ron=10 Roff=1MEG) TEXT 504 104 Left 0 !.model DIdeal D(Vfwd=1m Ron=100 Roff=1MEG) TEXT 416 -512 Left 0 !.PARAM LT3845A_osc_low=1.625 LT3845A_osc_high=3.0 TEXT 416 -480 Left 0 !.PARAM LT3845A_osc_discharge=8.2m RECTANGLE Normal 1168 1072 -448 -560