Version 4 SHEET 1 1688 948 WIRE -464 -544 -464 -576 WIRE -464 704 -464 672 WIRE -432 -576 -464 -576 WIRE -432 704 -464 704 WIRE -304 -256 -352 -256 WIRE -304 -224 -304 -256 WIRE -304 -112 -304 -144 WIRE -304 -48 -352 -48 WIRE -304 -32 -304 -48 WIRE -304 64 -304 32 WIRE -304 192 -352 192 WIRE -304 224 -304 192 WIRE -304 320 -304 288 WIRE -304 512 -368 512 WIRE -304 544 -304 512 WIRE -304 640 -304 608 WIRE -256 192 -304 192 WIRE -256 512 -304 512 WIRE -240 -48 -304 -48 WIRE -240 0 -240 -32 WIRE -208 -256 -304 -256 WIRE -208 -224 -208 -256 WIRE -208 -112 -208 -160 WIRE -128 512 -176 512 WIRE -128 544 -128 512 WIRE -128 640 -128 608 WIRE -112 -256 -208 -256 WIRE -112 -176 -112 -256 WIRE -112 192 -176 192 WIRE -112 240 -112 192 WIRE -80 -176 -112 -176 WIRE -80 -128 -80 -160 WIRE -80 192 -112 192 WIRE -80 240 -112 240 WIRE -80 256 -128 256 WIRE -64 336 -64 304 WIRE 16 -176 -16 -176 WIRE 16 -128 16 -176 WIRE 16 112 -352 112 WIRE 16 192 -16 192 WIRE 16 192 16 112 WIRE 16 256 -16 256 WIRE 16 256 16 192 WIRE 16 432 16 256 WIRE 16 528 16 496 WIRE 16 544 16 528 WIRE 16 640 16 608 WIRE 80 -48 -176 -48 WIRE 80 464 80 -48 WIRE 80 528 16 528 WIRE 80 544 80 528 WIRE 80 640 80 608 WIRE 144 -256 -112 -256 WIRE 144 -240 144 -256 WIRE 144 -128 16 -128 WIRE 144 -128 144 -160 WIRE 144 464 80 464 WIRE 144 512 -128 512 WIRE 144 528 80 528 WIRE 160 560 160 528 WIRE 224 -256 144 -256 WIRE 224 -176 224 -256 WIRE 224 -128 144 -128 WIRE 224 -112 224 -128 WIRE 224 -16 224 -48 WIRE 224 336 192 336 WIRE 224 384 224 352 WIRE 256 -256 224 -256 WIRE 256 -176 224 -176 WIRE 272 -128 224 -128 WIRE 368 -256 320 -256 WIRE 368 -176 336 -176 WIRE 368 -176 368 -256 WIRE 368 -128 320 -128 WIRE 368 -112 368 -128 WIRE 368 -16 368 -48 WIRE 400 480 208 480 WIRE 400 480 400 288 WIRE 432 336 288 336 WIRE 432 432 368 432 WIRE 432 432 432 336 WIRE 448 -256 368 -256 WIRE 448 -240 448 -256 WIRE 448 -128 368 -128 WIRE 448 -128 448 -160 WIRE 448 288 400 288 WIRE 448 336 432 336 WIRE 448 432 432 432 WIRE 448 480 400 480 WIRE 480 -256 448 -256 WIRE 480 -128 448 -128 WIRE 496 272 496 240 WIRE 496 384 496 352 WIRE 496 416 496 384 WIRE 496 528 496 496 WIRE 496 560 496 528 WIRE 592 -256 560 -256 WIRE 592 -240 592 -256 WIRE 592 -144 592 -176 WIRE 592 240 496 240 WIRE 592 272 592 240 WIRE 592 368 592 336 WIRE 592 384 496 384 WIRE 592 416 592 384 WIRE 592 528 496 528 WIRE 592 528 592 480 WIRE 640 240 592 240 WIRE 640 528 592 528 WIRE 656 -256 592 -256 WIRE 656 384 592 384 WIRE 784 -576 752 -576 WIRE 784 -544 784 -576 WIRE 784 704 752 704 WIRE 784 704 784 672 FLAG 656 384 Out IOPIN 656 384 In FLAG 592 -144 COM FLAG 656 -256 Ref IOPIN 656 -256 In FLAG -352 -48 Osc IOPIN -352 -48 In FLAG -128 640 COM FLAG -352 192 Vfb IOPIN -352 192 In FLAG -352 112 Err IOPIN -352 112 In FLAG 16 640 COM FLAG -368 512 Ifb IOPIN -368 512 In FLAG -304 640 COM FLAG -304 320 COM FLAG -304 64 COM FLAG -128 256 2v5 FLAG -352 -256 Vcc IOPIN -352 -256 In FLAG 368 -16 COM FLAG 640 240 Vcc IOPIN 640 240 In FLAG 640 528 Com IOPIN 640 528 In FLAG 592 368 COM FLAG 480 -128 2v5 FLAG 192 336 Ref FLAG 80 640 COM FLAG -208 -112 COM FLAG 224 -16 COM FLAG 368 432 fault FLAG -304 -112 COM FLAG 224 384 COM FLAG -64 336 COM FLAG 160 560 COM FLAG -240 0 COM FLAG -80 -128 COM FLAG 496 560 COM 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 128 -256 R0 SYMATTR InstName R1 SYMATTR Value 8e6 SYMBOL cap 208 -112 R0 WINDOW 0 32 8 Left 0 WINDOW 3 32 56 Left 0 SYMATTR InstName C1 SYMATTR Value 1p SYMBOL sw 352 -176 M270 WINDOW 0 40 88 VRight 0 WINDOW 3 40 32 VLeft 0 SYMATTR InstName S1 SYMATTR Value ref SYMBOL diode 320 -272 R90 WINDOW 0 -8 56 VRight 0 WINDOW 3 -8 0 VLeft 0 SYMATTR InstName D2 SYMATTR Value V65 SYMBOL cap 384 -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 464 -144 R180 WINDOW 0 36 76 Left 0 WINDOW 3 36 40 Left 0 SYMATTR InstName R2 SYMATTR Value 240 SYMBOL res 576 -272 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R3 SYMATTR Value 280m SYMBOL cap 576 -176 M180 WINDOW 0 32 56 Left 0 WINDOW 3 32 8 Left 0 SYMATTR InstName C3 SYMATTR Value 10p SYMBOL cap -288 -32 M0 WINDOW 3 32 56 Left 0 WINDOW 0 32 8 Left 0 SYMATTR Value 5p SYMATTR InstName C4 SYMBOL Digital\\buf1 -240 -112 R0 WINDOW 3 0 128 Left 0 WINDOW 38 48 32 Left 0 WINDOW 0 0 32 Left 0 WINDOW 123 0 160 Left 0 WINDOW 39 0 192 Left 0 SYMATTR Value Vtcap=1.75 Vhcap=.85 SYMATTR SpiceModel ExtOsc SYMATTR InstName A2 SYMATTR Value2 Icharge=1p Idischarge=8.3m SYMATTR SpiceLine duty=.96 tripdt=5n nobreak SYMBOL cap -288 224 M0 WINDOW 0 32 8 Left 0 WINDOW 3 32 56 Left 0 SYMATTR InstName C5 SYMATTR Value 1p SYMBOL res -160 176 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R4 SYMATTR Value 165k SYMBOL cap -16 176 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 -48 208 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 -288 544 M0 WINDOW 0 32 8 Left 0 WINDOW 3 32 56 Left 0 SYMATTR InstName C7 SYMATTR Value 5p SYMBOL res -160 496 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R5 SYMATTR Value 75k SYMBOL cap -144 544 R0 WINDOW 0 32 8 Left 0 WINDOW 3 32 56 Left 0 SYMATTR InstName C8 SYMATTR Value 1p SYMBOL diode 32 432 M0 WINDOW 3 40 56 Left 0 WINDOW 0 40 24 Left 0 SYMATTR Value 2R SYMATTR InstName D3 SYMBOL diode 32 544 M0 WINDOW 3 41 40 Left 0 WINDOW 0 41 8 Left 0 SYMATTR Value 1R SYMATTR InstName D4 SYMBOL cap 64 544 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\\and 176 432 R0 WINDOW 0 -48 16 Left 0 WINDOW 38 0 16 Left 0 WINDOW 3 48 64 Left 0 WINDOW 123 48 96 Left 0 SYMATTR InstName A5 SYMATTR SpiceModel SERflop SYMATTR Value Vt=1u nobreak SYMATTR Value2 trise=200n tripdt=5n SYMBOL Digital\\schmtinv 224 272 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 496 368 M180 WINDOW 0 32 88 Left 0 WINDOW 3 32 32 Left 0 SYMATTR InstName S2 SYMATTR Value Ho SYMBOL sw 496 512 M180 WINDOW 0 32 88 Left 0 WINDOW 3 32 32 Left 0 SYMATTR InstName S3 SYMATTR Value Lo SYMBOL cap 576 272 R0 WINDOW 3 32 56 Left 0 WINDOW 0 32 8 Left 0 SYMATTR Value 20p SYMATTR InstName C10 SYMBOL cap 576 416 R0 WINDOW 0 32 8 Left 0 WINDOW 3 32 64 Left 0 SYMATTR InstName C11 SYMATTR Value 20p TEXT 224 624 Left 0 !.model 1R d(Vfwd=1 Ron=1) TEXT 224 592 Left 0 !.model 2R d(Vfwd=1.3 Ron=2e6) TEXT 112 48 Left 0 !.model 34V d(Ron=.5 Vfwd=.5 Vrev=34 Rrev=22) TEXT 112 80 Left 0 !.model ref sw(Vh=-11m Ilimit=100m) TEXT 112 176 Left 0 !.model Ho sw(Vt= .48 Vh=-.25 Ron=2 Roff=100k Vser=1.2) TEXT 112 208 Left 0 !.model Lo sw(Vt=-.52 Vh=-.25 Ron=6 Roff=300k) TEXT 112 16 Left 0 !.model V65 d(Vfwd=0.65) 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 RECTANGLE Normal 768 688 -448 -560