Version 4 SHEET 1 1312 1684 WIRE -1104 432 -1312 432 WIRE -832 432 -1104 432 WIRE -384 432 -832 432 WIRE 240 432 -384 432 WIRE -560 448 -688 448 WIRE -496 448 -560 448 WIRE -240 448 -496 448 WIRE 32 448 -240 448 WIRE -1104 464 -1104 432 WIRE -560 464 -560 448 WIRE -688 480 -688 448 WIRE 32 480 32 448 WIRE -832 496 -832 432 WIRE -384 496 -384 432 WIRE -240 496 -240 448 WIRE -96 496 -96 480 WIRE 240 496 240 432 WIRE -560 544 -560 528 WIRE -1104 576 -1104 544 WIRE -464 576 -784 576 WIRE 192 576 -16 576 WIRE -1312 656 -1312 432 WIRE -832 672 -832 592 WIRE -784 672 -832 672 WIRE -688 672 -688 544 WIRE -688 672 -720 672 WIRE -464 672 -688 672 WIRE 32 672 32 544 WIRE 32 672 -16 672 WIRE 128 672 32 672 WIRE 240 672 240 592 WIRE 240 672 192 672 WIRE -1104 768 -1136 768 WIRE -992 768 -1024 768 WIRE -832 768 -832 672 WIRE -832 768 -992 768 WIRE -464 768 -832 768 WIRE 240 768 240 672 WIRE 240 768 -16 768 WIRE 400 768 240 768 WIRE 464 768 400 768 WIRE 592 768 544 768 WIRE -832 784 -832 768 WIRE 240 784 240 768 WIRE 400 800 400 768 WIRE -992 816 -992 768 WIRE -464 864 -784 864 WIRE 192 864 -16 864 WIRE 400 880 400 864 WIRE -992 896 -992 880 WIRE -832 896 -832 880 WIRE 240 896 240 880 WIRE -1136 960 -1136 768 WIRE -704 960 -1136 960 WIRE -464 960 -704 960 WIRE 96 960 -16 960 WIRE 592 960 592 768 WIRE 592 960 96 960 WIRE -704 976 -704 960 WIRE 96 976 96 960 WIRE -1136 1056 -1136 1040 WIRE -704 1056 -704 1040 WIRE -704 1056 -1136 1056 WIRE -464 1056 -704 1056 WIRE 96 1056 96 1040 WIRE 96 1056 -16 1056 WIRE 592 1056 592 1040 WIRE 592 1056 96 1056 WIRE -1136 1152 -1136 1056 WIRE -1136 1152 -1264 1152 WIRE -1072 1152 -1136 1152 WIRE -912 1152 -992 1152 WIRE -464 1152 -912 1152 WIRE 352 1152 -16 1152 WIRE 432 1152 352 1152 WIRE 592 1152 592 1056 WIRE 592 1152 512 1152 WIRE 688 1152 592 1152 WIRE -1264 1168 -1264 1152 WIRE -1136 1168 -1136 1152 WIRE 592 1168 592 1152 WIRE 688 1168 688 1152 WIRE -912 1184 -912 1152 WIRE 352 1184 352 1152 WIRE -688 1248 -704 1248 WIRE -592 1248 -608 1248 WIRE -464 1248 -528 1248 WIRE 16 1248 -16 1248 WIRE 96 1248 80 1248 WIRE 192 1248 176 1248 WIRE -1264 1264 -1264 1248 WIRE -1136 1264 -1136 1232 WIRE 592 1264 592 1232 WIRE 688 1264 688 1248 WIRE 352 1280 352 1264 WIRE -912 1312 -912 1264 WIRE -640 1344 -704 1344 WIRE -464 1344 -576 1344 WIRE 64 1344 -16 1344 WIRE 192 1344 128 1344 WIRE -496 1440 -496 448 WIRE -464 1440 -496 1440 WIRE 0 1440 -16 1440 WIRE -1312 1552 -1312 736 WIRE -464 1552 -1312 1552 WIRE 0 1552 -16 1552 WIRE -384 1648 -384 1632 WIRE -240 1648 -240 1632 WIRE -96 1648 -96 1632 FLAG -240 1648 0 FLAG -96 1648 0 FLAG -560 544 0 FLAG -832 896 0 FLAG -992 896 0 FLAG -704 1344 0 FLAG -704 1248 0 FLAG -1136 1264 0 FLAG -912 1312 0 FLAG -1264 1152 OUT1 FLAG -1104 576 0 FLAG 240 896 0 FLAG 400 880 0 FLAG 192 1344 0 FLAG 192 1248 0 FLAG 592 1264 0 FLAG 352 1280 0 FLAG 688 1152 OUT2 FLAG -1264 1264 0 FLAG 688 1264 0 FLAG -384 1648 0 FLAG -1104 432 IN SYMBOL NMOS -784 496 M0 WINDOW 0 23 -9 Right 2 WINDOW 3 39 101 Right 2 SYMATTR InstName Q1 SYMATTR Value FDS6680A SYMBOL nmos -784 784 M0 WINDOW 0 -4 24 Right 2 WINDOW 3 25 97 Right 2 SYMATTR InstName Q2 SYMATTR Value FDS6680A SYMBOL cap -720 656 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C1 SYMATTR Value .1µ SYMBOL cap -576 464 R0 SYMATTR InstName C2 SYMATTR Value 1µ SYMBOL schottky -1008 880 M180 WINDOW 0 24 72 Left 2 WINDOW 3 24 0 Left 2 SYMATTR InstName D2 SYMATTR Value 1N5817 SYMBOL ind -1008 784 M270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 SYMATTR InstName L1 SYMATTR Value 6.3µ SYMATTR SpiceLine Rpar=10000 SYMBOL cap -720 976 R0 SYMATTR InstName C3 SYMATTR Value 1000p SYMBOL res -928 1168 R0 SYMATTR InstName R1 SYMATTR Value 20K SYMBOL res -976 1136 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R2 SYMATTR Value 105K SYMBOL cap -1152 1168 R0 SYMATTR SpiceLine Rser=50m SYMATTR InstName C4 SYMATTR Value 47µ SYMBOL cap -528 1232 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C5 SYMATTR Value 220p SYMBOL cap -576 1328 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C6 SYMATTR Value .001µ SYMBOL res -592 1232 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R3 SYMATTR Value 15K SYMBOL VOLTAGE -1104 448 R0 SYMATTR InstName V1 SYMATTR Value 7 SYMBOL nmos 192 496 R0 SYMATTR InstName Q3 SYMATTR Value FDS6680A SYMBOL nmos 192 784 R0 SYMATTR InstName Q4 SYMATTR Value FDS6680A SYMBOL cap 128 656 M90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C7 SYMATTR Value .1µ SYMBOL schottky 384 864 M180 WINDOW 0 24 72 Left 2 WINDOW 3 24 0 Left 2 SYMATTR InstName D4 SYMATTR Value 1N5817 SYMBOL res 576 944 R0 SYMATTR InstName R4 SYMATTR Value .01 SYMBOL cap 80 976 R0 SYMATTR InstName C8 SYMATTR Value 1000p SYMBOL res 336 1168 R0 SYMATTR InstName R5 SYMATTR Value 20K SYMBOL res 416 1136 M90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R6 SYMATTR Value 63.4K SYMBOL cap 576 1168 R0 SYMATTR SpiceLine Rser=50m SYMATTR InstName C9 SYMATTR Value 47µ SYMBOL cap 16 1264 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName C10 SYMATTR Value 220p SYMBOL cap 64 1360 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName C11 SYMATTR Value .001µ SYMBOL res 80 1264 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R7 SYMATTR Value 15K SYMBOL ind 448 784 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 SYMATTR InstName L2 SYMATTR Value 6.3µ SYMATTR SpiceLine Rpar=10000 SYMBOL res -1152 944 R0 SYMATTR InstName R8 SYMATTR Value .01 SYMBOL RES -1328 640 R0 SYMATTR InstName R9 SYMATTR Value 10K SYMBOL PowerProducts\\LTC3728L -240 960 R0 WINDOW 0 -20 -336 Left 2 SYMATTR InstName U1 SYMBOL res 672 1152 R0 SYMATTR InstName Rload2 SYMATTR Value 10 SYMBOL RES -1280 1152 R0 SYMATTR InstName Rload1 SYMATTR Value 10 SYMBOL schottky -704 480 R0 SYMATTR InstName D1 SYMATTR Value 1N5817 SYMBOL schottky 16 480 R0 SYMATTR InstName D3 SYMATTR Value 1N5817 TEXT 264 1432 Left 2 !.tran 1.6m startup