Version 4 SHEET 1 3636 1892 WIRE 144 368 -224 368 WIRE 160 368 144 368 WIRE 272 368 240 368 WIRE 384 368 272 368 WIRE 592 368 384 368 WIRE 912 368 688 368 WIRE 384 512 352 512 WIRE 496 512 384 512 WIRE 736 512 592 512 WIRE 912 512 912 368 WIRE 912 512 736 512 WIRE 960 512 912 512 WIRE 1136 512 960 512 WIRE 1136 560 1136 512 WIRE 1056 576 1040 576 WIRE 1088 576 1056 576 WIRE 1088 624 1056 624 WIRE -416 656 -512 656 WIRE -368 656 -416 656 WIRE -224 656 -224 368 WIRE -224 656 -368 656 WIRE -112 656 -224 656 WIRE -96 656 -112 656 WIRE 16 656 -16 656 WIRE 352 656 352 512 WIRE 352 656 16 656 WIRE 368 656 352 656 WIRE 736 656 736 512 WIRE 736 656 464 656 WIRE 960 656 960 512 WIRE 1056 672 1056 624 WIRE 1136 672 1136 640 WIRE 1136 672 1056 672 WIRE 1136 688 1136 672 WIRE -512 736 -512 656 WIRE 448 736 448 704 WIRE 576 736 576 560 WIRE 672 768 672 416 WIRE 960 768 960 720 WIRE 448 848 448 816 WIRE 576 848 576 816 WIRE 576 848 448 848 WIRE -512 864 -512 816 WIRE -416 864 -416 656 WIRE 448 896 448 848 WIRE 624 896 576 896 WIRE 672 896 672 848 WIRE 672 896 624 896 WIRE 736 896 736 656 WIRE 1024 896 736 896 WIRE -224 928 -224 656 WIRE -112 928 -112 656 WIRE 16 928 16 656 WIRE 144 928 144 368 WIRE 272 928 272 368 WIRE 448 928 448 896 WIRE 576 928 576 896 WIRE 736 992 736 896 WIRE 736 992 656 992 WIRE 1024 992 1024 896 WIRE 736 1008 736 992 WIRE -416 1024 -416 944 WIRE -416 1024 -512 1024 WIRE -304 1024 -416 1024 WIRE -272 1024 -304 1024 WIRE -512 1056 -512 1024 WIRE 736 1120 736 1088 WIRE 736 1120 656 1120 WIRE 800 1120 736 1120 WIRE -512 1136 -512 1120 WIRE -416 1136 -416 1024 WIRE -272 1136 -416 1136 WIRE -416 1152 -416 1136 WIRE 896 1184 656 1184 WIRE 1024 1184 1024 1072 WIRE 1024 1184 896 1184 WIRE 1024 1232 1024 1184 WIRE -416 1248 -416 1232 WIRE -304 1248 -416 1248 WIRE -272 1248 -304 1248 WIRE 720 1248 656 1248 WIRE 752 1248 720 1248 WIRE 880 1248 832 1248 WIRE -416 1280 -416 1248 WIRE 720 1312 656 1312 WIRE 1024 1360 1024 1312 WIRE -416 1392 -416 1360 WIRE -160 1408 -160 1360 WIRE 64 1408 64 1360 WIRE 128 1408 64 1408 WIRE 176 1408 176 1360 WIRE 176 1408 128 1408 WIRE 288 1408 288 1360 WIRE 400 1408 400 1360 WIRE 496 1408 496 1360 WIRE 64 1424 64 1408 WIRE 288 1440 288 1408 WIRE 496 1440 496 1408 WIRE 176 1488 176 1408 WIRE -32 1520 -32 1360 WIRE 64 1520 64 1504 WIRE 64 1520 -32 1520 WIRE 64 1552 64 1520 WIRE 288 1552 288 1504 WIRE 496 1552 496 1504 WIRE 64 1664 64 1632 WIRE 176 1664 176 1552 WIRE 176 1664 64 1664 WIRE 176 1696 176 1664 FLAG -512 864 0 FLAG -416 1392 0 FLAG 1024 1360 0 FLAG 176 1696 0 FLAG 288 1552 0 FLAG 400 1408 0 FLAG -512 1136 0 FLAG -368 656 IN FLAG 800 1120 VDSFB FLAG 720 1248 PG FLAG 128 1408 IntVcc FLAG 880 1248 IntVcc FLAG 496 1552 0 FLAG 960 768 0 FLAG 960 512 OUT FLAG 1136 688 0 FLAG 720 1312 comm FLAG 896 1184 FB FLAG -304 1024 FLT# FLAG -304 1248 OV FLAG 448 896 G1 FLAG 624 896 G2 FLAG 384 368 sense2- FLAG 384 512 sense1- FLAG 288 1408 tmrfet FLAG 496 1408 tmr FLAG 1056 576 PG SYMBOL voltage -512 720 M0 WINDOW 123 0 0 Left 0 WINDOW 39 0 0 Left 0 SYMATTR InstName V1 SYMATTR Value PWL(0 0 10u 0 1m 48) SYMBOL res -432 848 R0 SYMATTR InstName R1 SYMATTR Value 93.1k SYMBOL res -432 1136 R0 SYMATTR InstName R2 SYMATTR Value 3.01k SYMBOL res -432 1264 R0 SYMATTR InstName R3 SYMATTR Value 4.22k SYMBOL res 0 640 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName Rsns1 SYMATTR Value .2m SYMBOL res 560 720 R0 SYMATTR InstName R6 SYMATTR Value 10 SYMBOL res 720 992 R0 SYMATTR InstName R8 SYMATTR Value 360k SYMBOL res 1008 976 R0 SYMATTR InstName R9 SYMATTR Value 62k SYMBOL res 1008 1216 R0 SYMATTR InstName R10 SYMATTR Value 5.23k SYMBOL res 48 1408 R0 SYMATTR InstName R11 SYMATTR Value 59k SYMBOL res 48 1536 R0 SYMATTR InstName R12 SYMATTR Value 44.2k SYMBOL cap 160 1488 R0 SYMATTR InstName C2 SYMATTR Value .1µ SYMBOL cap 272 1440 R0 SYMATTR InstName C3 SYMATTR Value 1.5µ SYMBOL cap -528 1056 R0 SYMATTR InstName C5 SYMATTR Value .1µ SYMBOL nmos 496 560 R270 WINDOW 0 33 123 VRight 2 WINDOW 3 4 118 VRight 2 SYMATTR InstName M1 SYMATTR Value IPT015N10N5 SYMBOL res 656 752 R0 SYMATTR InstName R14 SYMATTR Value 10 SYMBOL res 432 720 R0 SYMATTR InstName R5 SYMATTR Value 10 SYMBOL nmos 592 416 R270 WINDOW 0 33 123 VRight 2 WINDOW 3 4 118 VRight 2 WINDOW 123 -26 118 VRight 2 SYMATTR InstName M3 SYMATTR Value PSMN7R6100BSE SYMBOL res 848 1232 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R18 SYMATTR Value 10k SYMBOL res 256 352 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName Rsns2 SYMATTR Value 4m SYMBOL nmos 368 704 R270 WINDOW 0 33 123 VRight 2 WINDOW 3 4 118 VRight 2 SYMATTR InstName M2 SYMATTR Value IPT015N10N5 SYMBOL cap 480 1440 R0 SYMATTR InstName C4 SYMATTR Value 180p SYMBOL cap 944 656 R0 SYMATTR InstName CL SYMATTR Value 2400µ SYMBOL sw 1136 656 M180 SYMATTR InstName S1 SYMATTR Value LD SYMBOL LTC4238 192 1120 R0 SYMATTR InstName U1 TEXT 984 1600 Left 2 !.tran 1 TEXT 408 296 Left 2 !.model LD SW(Ron=4 Roff=1000 vt=.5 vh=-200m)