Version 4 SHEET 1 1444 2964 WIRE -752 352 -1024 352 WIRE -384 352 -752 352 WIRE 240 352 -384 352 WIRE -1024 368 -1024 352 WIRE -496 384 -576 384 WIRE -240 384 -496 384 WIRE 32 384 -240 384 WIRE -496 400 -496 384 WIRE 32 432 32 384 WIRE -1024 464 -1024 448 WIRE -576 480 -576 384 WIRE -496 480 -496 464 WIRE -752 496 -752 352 WIRE -384 496 -384 352 WIRE -240 496 -240 384 WIRE -96 496 -96 480 WIRE 240 496 240 352 WIRE -464 576 -704 576 WIRE 192 576 -16 576 WIRE -752 672 -752 592 WIRE -704 672 -752 672 WIRE -576 672 -576 544 WIRE -576 672 -640 672 WIRE -464 672 -576 672 WIRE 32 672 32 496 WIRE 32 672 -16 672 WIRE 80 672 32 672 WIRE 240 672 240 592 WIRE 240 672 144 672 WIRE -1024 768 -1104 768 WIRE -864 768 -944 768 WIRE -752 768 -752 672 WIRE -752 768 -864 768 WIRE -464 768 -752 768 WIRE 240 768 240 672 WIRE 240 768 -16 768 WIRE 384 768 240 768 WIRE 448 768 384 768 WIRE 560 768 528 768 WIRE -752 784 -752 768 WIRE 240 784 240 768 WIRE -864 816 -864 768 WIRE 384 816 384 768 WIRE -464 864 -704 864 WIRE 192 864 -16 864 WIRE -864 896 -864 880 WIRE 240 912 240 880 WIRE 384 912 384 880 WIRE -752 928 -752 880 WIRE -1104 960 -1104 768 WIRE -624 960 -1104 960 WIRE -464 960 -624 960 WIRE 96 960 -16 960 WIRE 560 960 560 768 WIRE 560 960 96 960 WIRE -624 976 -624 960 WIRE 96 976 96 960 WIRE -1104 1056 -1104 1040 WIRE -624 1056 -624 1040 WIRE -624 1056 -1104 1056 WIRE -464 1056 -624 1056 WIRE 96 1056 96 1040 WIRE 96 1056 -16 1056 WIRE 560 1056 560 1040 WIRE 560 1056 96 1056 WIRE -1104 1152 -1104 1056 WIRE -1104 1152 -1232 1152 WIRE -992 1152 -1104 1152 WIRE -928 1152 -992 1152 WIRE -768 1152 -848 1152 WIRE -464 1152 -768 1152 WIRE 304 1152 -16 1152 WIRE 384 1152 304 1152 WIRE 560 1152 560 1056 WIRE 560 1152 464 1152 WIRE 672 1152 560 1152 WIRE -1232 1168 -1232 1152 WIRE -1104 1168 -1104 1152 WIRE -768 1168 -768 1152 WIRE 304 1168 304 1152 WIRE 672 1168 672 1152 WIRE 560 1184 560 1152 WIRE -640 1248 -656 1248 WIRE -544 1248 -560 1248 WIRE -464 1248 -480 1248 WIRE 0 1248 -16 1248 WIRE 80 1248 64 1248 WIRE 176 1248 160 1248 WIRE -1232 1264 -1232 1248 WIRE -1104 1264 -1104 1232 WIRE -768 1264 -768 1248 WIRE 304 1264 304 1248 WIRE 560 1264 560 1248 WIRE 672 1264 672 1248 WIRE -544 1344 -560 1344 WIRE -464 1344 -480 1344 WIRE 0 1344 -16 1344 WIRE 80 1344 64 1344 WIRE -992 1392 -992 1152 WIRE -464 1440 -480 1440 WIRE 0 1440 -16 1440 WIRE -992 1552 -992 1472 WIRE -464 1552 -992 1552 WIRE 0 1552 -16 1552 WIRE -384 1648 -384 1632 WIRE -240 1648 -240 1632 WIRE -96 1648 -96 1632 FLAG -384 1648 0 FLAG -96 1648 0 FLAG -496 480 0 FLAG -752 928 0 FLAG -864 896 0 FLAG -560 1344 0 FLAG -656 1248 0 FLAG -1104 1264 0 FLAG -768 1264 0 FLAG -1232 1152 OUT1 FLAG -1024 464 0 FLAG 240 912 0 FLAG 384 912 0 FLAG 80 1344 0 FLAG 176 1248 0 FLAG 560 1264 0 FLAG 304 1264 0 FLAG 672 1152 OUT2 FLAG -1232 1264 0 FLAG 672 1264 0 FLAG -1024 352 IN SYMBOL NMOS -704 496 M0 WINDOW 0 19 -11 Right 2 WINDOW 3 33 103 Right 2 SYMATTR InstName Q1 SYMATTR Value FDS6680A SYMBOL nmos -704 784 M0 WINDOW 0 -5 28 Right 2 WINDOW 3 34 103 Right 2 SYMATTR InstName Q2 SYMATTR Value FDS6680A SYMBOL cap -640 656 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C1 SYMATTR Value .1µ SYMBOL cap -512 400 R0 SYMATTR InstName C2 SYMATTR Value 1µ SYMBOL ind -928 784 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 -640 976 R0 SYMATTR InstName C3 SYMATTR Value 1000p SYMBOL res -784 1152 R0 SYMATTR InstName R1 SYMATTR Value 20K SYMBOL res -832 1136 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R2 SYMATTR Value 105K SYMBOL cap -1120 1168 R0 SYMATTR InstName C4 SYMATTR Value 47µ SYMATTR SpiceLine Rser=50m SYMBOL cap -480 1232 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C5 SYMATTR Value 220p SYMBOL cap -480 1328 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C6 SYMATTR Value .001µ SYMBOL res -544 1232 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R3 SYMATTR Value 15K SYMBOL VOLTAGE -1024 352 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 80 656 M90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C7 SYMATTR Value .1µ SYMBOL res 544 944 R0 SYMATTR InstName R4 SYMATTR Value .01 SYMBOL cap 80 976 R0 SYMATTR InstName C8 SYMATTR Value 1000p SYMBOL res 288 1152 R0 SYMATTR InstName R5 SYMATTR Value 20K SYMBOL res 368 1136 M90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R6 SYMATTR Value 63.4K SYMBOL cap 544 1184 R0 SYMATTR InstName C9 SYMATTR Value 47µ SYMATTR SpiceLine Rser=50m SYMBOL cap 0 1264 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName C10 SYMATTR Value 220p SYMBOL cap 0 1360 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName C11 SYMATTR Value .001µ SYMBOL res 64 1264 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R7 SYMATTR Value 15K SYMBOL ind 432 784 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 -1120 944 R0 SYMATTR InstName R8 SYMATTR Value .01 SYMBOL RES -1008 1376 R0 SYMATTR InstName R9 SYMATTR Value 10K SYMBOL PowerProducts\\LTC3707 -240 960 R0 SYMATTR InstName U1 SYMBOL res 656 1152 R0 SYMATTR InstName Rload2 SYMATTR Value 2 SYMBOL RES -1248 1152 R0 SYMATTR InstName Rload1 SYMATTR Value 2 SYMBOL schottky -592 480 R0 SYMATTR InstName D1 SYMATTR Value 1N5817 SYMATTR Description Diode SYMATTR Type diode SYMBOL schottky 16 432 R0 SYMATTR InstName D3 SYMATTR Value 1N5817 SYMATTR Description Diode SYMATTR Type diode SYMBOL schottky -880 880 M180 WINDOW 0 24 72 Left 2 WINDOW 3 24 0 Left 2 SYMATTR InstName D2 SYMATTR Value 1N5817 SYMATTR Description Diode SYMATTR Type diode SYMBOL schottky 368 880 M180 WINDOW 0 24 72 Left 2 WINDOW 3 24 0 Left 2 SYMATTR InstName D4 SYMATTR Value 1N5817 SYMATTR Description Diode SYMATTR Type diode TEXT 312 1456 Left 2 !.tran 2m startup