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352 IN SYMBOL NMOS -736 496 M0 WINDOW 0 32 -11 Right 2 WINDOW 3 38 108 Right 2 SYMATTR InstName Q1 SYMATTR Value FDS6680A SYMBOL nmos -736 784 M0 WINDOW 0 -3 30 Right 2 WINDOW 3 22 101 Right 2 SYMATTR InstName Q2 SYMATTR Value FDS6680A SYMBOL cap -656 656 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C1 SYMATTR Value .1µ SYMBOL cap -160 384 R0 SYMATTR InstName C2 SYMATTR Value 4.7µ SYMBOL schottky -944 880 M180 WINDOW 0 24 72 Left 2 WINDOW 3 24 0 Left 2 SYMATTR InstName D1 SYMATTR Value MBRS140 SYMBOL ind -960 784 M270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 SYMATTR InstName L1 SYMATTR Value 8µ SYMATTR SpiceLine Rpar=2K SYMBOL cap -656 976 R0 SYMATTR InstName C3 SYMATTR Value 1000p SYMBOL res -896 1152 R0 SYMATTR InstName R1 SYMATTR Value 20K SYMBOL res -944 1136 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R2 SYMATTR Value 105K SYMBOL polcap -1152 1168 R0 SYMATTR SpiceLine Rser=0.05 SYMATTR InstName C4 SYMATTR Value 56µ 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 .0001µ SYMBOL res -608 1232 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R3 SYMATTR Value 15K SYMBOL VOLTAGE -1056 352 R0 SYMATTR InstName V1 SYMATTR Value 18 SYMBOL nmos 176 496 R0 SYMATTR InstName Q3 SYMATTR Value FDS6680A SYMBOL nmos 176 784 R0 SYMATTR InstName Q4 SYMATTR Value FDS6680A SYMBOL cap 112 656 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 .015 SYMBOL cap 16 976 R0 SYMATTR InstName C8 SYMATTR Value 1000p SYMBOL res 304 1152 R0 SYMATTR InstName R5 SYMATTR Value 20K SYMBOL res 384 1136 M90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R6 SYMATTR Value 280K SYMBOL polcap 544 1168 R0 SYMATTR SpiceLine Rser=0.065 SYMATTR InstName C9 SYMATTR Value 56µ 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 80 1360 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName C11 SYMATTR Value .0001µ SYMBOL res 96 1264 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R7 SYMATTR Value 15K SYMBOL ind 416 784 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 SYMATTR InstName L2 SYMATTR Value 15µ SYMATTR SpiceLine Rpar=2K SYMBOL res -1152 944 R0 WINDOW 0 39 44 Left 2 SYMATTR InstName R8 SYMATTR Value .015 SYMBOL RES -1344 640 R0 SYMATTR InstName R9 SYMATTR Value 10K SYMBOL POWERPRODUCTS\\LTC3727 -240 960 R0 SYMATTR InstName U1 SYMBOL schottky 352 880 M180 WINDOW 0 24 72 Left 2 WINDOW 3 24 0 Left 2 SYMATTR InstName D2 SYMATTR Value MBRS140 SYMBOL schottky -656 480 R0 SYMATTR InstName D3 SYMATTR Value MBRS140 SYMBOL schottky 16 480 R0 SYMATTR InstName D4 SYMATTR Value MBRS140 SYMBOL cap 80 1536 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C12 SYMATTR Value .01µ SYMBOL res 192 1536 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R10 SYMATTR Value 10K SYMBOL voltage -240 1648 R0 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V2 SYMATTR Value SINE(.8 .8 300K) SYMBOL res 672 1152 R0 SYMATTR InstName Rload2 SYMATTR Value 2.4 SYMBOL RES -1280 1152 R0 SYMATTR InstName Rload1 SYMATTR Value 1 TEXT 320 1392 Left 2 !.tran 800u startup