Version 4 SHEET 1 1300 1092 WIRE -112 -144 -224 -144 WIRE 352 -144 -112 -144 WIRE 480 -144 352 -144 WIRE 352 -112 352 -144 WIRE -224 -64 -224 -144 WIRE -224 48 -224 16 WIRE -112 48 -112 -144 WIRE -32 48 -112 48 WIRE 592 48 288 48 WIRE 896 48 592 48 WIRE 1152 48 896 48 WIRE 896 64 896 48 WIRE 1152 64 1152 48 WIRE -144 128 -192 128 WIRE -32 128 -64 128 WIRE 352 128 352 -48 WIRE 352 128 288 128 WIRE 592 128 592 48 WIRE 896 160 896 128 WIRE 1152 160 1152 144 WIRE -384 208 -448 208 WIRE -112 208 -304 208 WIRE -32 208 -112 208 WIRE 544 208 288 208 WIRE 352 224 352 128 WIRE 592 224 592 208 WIRE -448 288 -448 272 WIRE -112 288 -112 272 WIRE -112 288 -448 288 WIRE -32 288 -112 288 WIRE 352 288 288 288 WIRE 592 288 592 224 WIRE 592 288 352 288 WIRE 672 288 592 288 WIRE 864 288 752 288 WIRE 1040 288 864 288 WIRE 1088 288 1040 288 WIRE 1216 288 1152 288 WIRE 1040 304 1040 288 WIRE 1216 304 1216 288 WIRE -832 368 -880 368 WIRE -736 368 -752 368 WIRE -144 368 -544 368 WIRE -32 368 -64 368 WIRE 480 368 480 -144 WIRE 480 368 288 368 WIRE -880 384 -880 368 WIRE 592 400 592 288 WIRE 768 400 592 400 WIRE 1040 400 1040 368 WIRE 1216 400 1216 384 WIRE -192 432 -192 128 WIRE -192 432 -544 432 WIRE -192 448 -192 432 WIRE -32 448 -192 448 WIRE 480 448 480 368 WIRE 480 448 288 448 WIRE 592 448 592 400 WIRE -736 464 -784 464 WIRE -880 512 -880 464 WIRE -784 512 -784 464 WIRE -448 512 -448 288 WIRE -432 512 -448 512 WIRE -336 512 -368 512 WIRE -240 512 -256 512 WIRE -192 528 -192 448 WIRE -144 528 -192 528 WIRE -32 528 -80 528 WIRE 544 528 288 528 WIRE 768 560 768 400 WIRE -448 608 -448 512 WIRE -416 608 -448 608 WIRE -240 608 -240 512 WIRE -240 608 -336 608 WIRE -192 608 -192 528 WIRE -32 608 -192 608 WIRE 592 608 592 544 WIRE 592 608 288 608 WIRE -240 656 -240 608 WIRE 864 656 864 288 WIRE 864 656 -240 656 WIRE -448 672 -448 608 WIRE -448 768 -448 752 WIRE -192 768 -192 608 WIRE 592 768 592 608 WIRE 768 768 768 624 FLAG 1152 160 0 FLAG -224 48 0 FLAG 1040 400 0 FLAG 1216 400 0 FLAG -448 768 0 FLAG 1216 288 Batteries FLAG 592 768 0 FLAG -192 768 0 FLAG -784 512 0 FLAG -880 512 0 FLAG 896 160 0 FLAG 768 768 0 FLAG 1040 288 Out SYMBOL PowerProducts\\LTC3703 128 336 R0 SYMATTR InstName U1 SYMBOL nmos 544 128 R0 SYMATTR InstName Q1 SYMATTR Value IRFP90N20D SYMBOL nmos 544 448 R0 SYMATTR InstName Q2 SYMATTR Value IRFP90N20D SYMBOL voltage -224 -80 R0 WINDOW 0 29 24 Left 0 SYMATTR InstName V1 SYMATTR Value 10 SYMBOL voltage 1152 48 R0 SYMATTR InstName Generator SYMATTR Value 90 SYMBOL cap 1024 304 R0 WINDOW 3 39 33 Left 0 WINDOW 123 28 60 Left 0 SYMATTR Value 270µ SYMATTR Value2 x2 SYMATTR SpiceLine Rser=10m SYMATTR InstName C1 SYMBOL res -48 352 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R1 SYMATTR Value 20k SYMBOL res -48 112 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R2 SYMATTR Value 25K SYMBOL res -288 192 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R3 SYMATTR Value 100K SYMBOL cap -464 208 R0 WINDOW 0 30 21 Left 0 WINDOW 3 28 56 Left 0 SYMATTR InstName C2 SYMATTR Value 2200p SYMBOL res -320 592 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R4 SYMATTR Value 140K SYMBOL res -240 496 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R5 SYMATTR Value 100 SYMBOL cap -368 496 R90 WINDOW 0 0 32 VBottom 0 WINDOW 3 32 32 VTop 0 SYMATTR InstName C3 SYMATTR Value 2200p SYMBOL cap -80 512 R90 WINDOW 0 0 32 VBottom 0 WINDOW 3 32 32 VTop 0 SYMATTR InstName C4 SYMATTR Value .001µ SYMBOL cap 336 224 R0 WINDOW 0 30 5 Left 0 WINDOW 3 37 44 Left 0 SYMATTR InstName C5 SYMATTR Value .1µ SYMBOL res -464 656 R0 SYMATTR InstName R6 SYMATTR Value 8.06K SYMBOL cap -128 208 R0 WINDOW 0 35 21 Left 0 WINDOW 3 28 56 Left 0 SYMATTR InstName C6 SYMATTR Value 1000p SYMBOL schottky 368 -112 M0 WINDOW 3 99 58 Top 0 SYMATTR Value MBR20100CT SYMATTR InstName D2 SYMATTR Description Diode SYMATTR Type diode SYMBOL ind 656 304 R270 WINDOW 0 32 56 VTop 0 WINDOW 3 5 56 VBottom 0 SYMATTR InstName L1 SYMATTR Value 10µ SYMATTR SpiceLine Ipk=10 Rser=0.0226 Rpar=942 Cpar=0 mfg="Coilcraft" pn="DO5010P-103HC" SYMBOL Optos\\4N25 -640 432 R0 SYMATTR InstName U2 SYMBOL voltage -880 368 R0 WINDOW 0 26 24 Left 0 SYMATTR InstName uC SYMATTR Value 5 SYMBOL Misc\\battery 1216 288 R0 SYMATTR InstName V4 SYMATTR Value 13.4 SYMBOL diode 1088 304 R270 WINDOW 0 32 32 VTop 0 WINDOW 3 0 32 VBottom 0 SYMATTR InstName D3 SYMBOL cap 880 64 R0 WINDOW 3 39 33 Left 0 WINDOW 123 28 60 Left 0 SYMATTR Value 22µ SYMATTR Value2 x2 SYMATTR SpiceLine Rser=10m SYMATTR InstName C7 SYMBOL schottky 784 624 R180 WINDOW 0 24 72 Left 0 WINDOW 3 24 0 Left 0 SYMATTR InstName D1 SYMATTR Value MBR20100CT SYMATTR Description Diode SYMATTR Type diode SYMBOL res -736 352 R90 WINDOW 0 0 56 VBottom 0 WINDOW 3 32 56 VTop 0 SYMATTR InstName R7 SYMATTR Value 220 TEXT 920 664 Left 0 !.tran 3m startup