Version 4 SHEET 1 1212 948 WIRE -320 -432 -448 -432 WIRE 64 -432 -320 -432 WIRE 672 -432 64 -432 WIRE -448 -416 -448 -432 WIRE 464 -416 -48 -416 WIRE 736 -416 464 -416 WIRE -176 -400 -240 -400 WIRE -112 -400 -176 -400 WIRE -32 -400 -112 -400 WIRE 208 -400 -32 -400 WIRE 496 -400 208 -400 WIRE 576 -400 496 -400 WIRE 736 -400 736 -416 WIRE -240 -384 -240 -400 WIRE 64 -368 64 -432 WIRE 208 -368 208 -400 WIRE 352 -368 352 -384 WIRE -448 -320 -448 -336 WIRE -112 -320 -112 -400 WIRE 576 -320 576 -400 WIRE -240 -304 -240 -320 WIRE -48 -304 -48 -416 WIRE -16 -304 -48 -304 WIRE 464 -304 464 -416 WIRE 464 -304 432 -304 WIRE 496 -304 496 -400 WIRE 736 -304 736 -320 WIRE -112 -208 -112 -240 WIRE -16 -208 -112 -208 WIRE 496 -208 496 -224 WIRE 496 -208 432 -208 WIRE -320 -192 -320 -432 WIRE -176 -192 -176 -400 WIRE 672 -192 672 -432 WIRE -16 -112 -272 -112 WIRE 624 -112 432 -112 WIRE -432 -16 -464 -16 WIRE -320 -16 -320 -96 WIRE -320 -16 -352 -16 WIRE -272 -16 -320 -16 WIRE -176 -16 -176 -128 WIRE -176 -16 -208 -16 WIRE -16 -16 -176 -16 WIRE 576 -16 576 -256 WIRE 576 -16 432 -16 WIRE 592 -16 576 -16 WIRE 672 -16 672 -96 WIRE 672 -16 656 -16 WIRE 704 -16 672 -16 WIRE 816 -16 784 -16 WIRE -320 80 -320 -16 WIRE -16 80 -320 80 WIRE 672 80 672 -16 WIRE 672 80 432 80 WIRE -320 96 -320 80 WIRE 672 96 672 80 WIRE -16 176 -272 176 WIRE 624 176 432 176 WIRE -320 208 -320 192 WIRE 672 208 672 192 WIRE -464 272 -464 -16 WIRE -16 272 -464 272 WIRE 816 272 816 -16 WIRE 816 272 432 272 WIRE -464 368 -464 352 WIRE -16 368 -464 368 WIRE 816 368 816 352 WIRE 816 368 432 368 WIRE -464 464 -464 368 WIRE -464 464 -592 464 WIRE -400 464 -464 464 WIRE -272 464 -320 464 WIRE -16 464 -272 464 WIRE 656 464 432 464 WIRE 704 464 656 464 WIRE 816 464 816 368 WIRE 816 464 784 464 WIRE 928 464 816 464 WIRE -592 480 -592 464 WIRE -272 480 -272 464 WIRE 656 480 656 464 WIRE 928 480 928 464 WIRE -464 496 -464 464 WIRE 816 496 816 464 WIRE -128 560 -144 560 WIRE -16 560 -64 560 WIRE 480 560 432 560 WIRE 560 560 544 560 WIRE -592 576 -592 560 WIRE -464 576 -464 560 WIRE -272 576 -272 560 WIRE 656 576 656 560 WIRE 816 576 816 560 WIRE 928 576 928 560 WIRE -112 656 -144 656 WIRE -16 656 -48 656 WIRE 464 656 432 656 WIRE 560 656 528 656 WIRE -32 752 -32 -400 WIRE -16 752 -32 752 WIRE 464 752 432 752 WIRE 64 928 64 912 WIRE 208 928 208 912 WIRE 352 928 352 912 FLAG 672 208 0 FLAG 352 928 0 FLAG 64 928 0 FLAG 656 576 0 FLAG 560 656 0 FLAG 560 560 0 FLAG -320 208 0 FLAG -272 576 0 FLAG -144 656 0 FLAG -448 -320 0 FLAG -240 -304 0 FLAG 464 752 0 FLAG 816 576 0 FLAG -464 576 0 FLAG -144 560 0 FLAG -592 576 0 FLAG 928 576 0 FLAG 208 928 0 FLAG -448 -432 IN FLAG -592 464 OUT1 FLAG 928 464 OUT2 FLAG 736 -304 0 FLAG 736 -416 RUN SYMBOL voltage -448 -432 R0 SYMATTR InstName V1 SYMATTR Value 10 SYMBOL cap 592 0 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName C1 SYMATTR Value .1µ SYMBOL ind 688 0 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 SYMATTR InstName L1 SYMATTR Value 7.2µ SYMATTR SpiceLine Rpar=2K SYMBOL res 800 256 R0 SYMATTR InstName R1 SYMATTR Value .01 SYMBOL schottky 560 -320 R0 WINDOW 3 24 69 Left 2 SYMATTR Value BAT54 SYMATTR InstName D1 SYMATTR Description Diode SYMATTR Type diode SYMBOL res 800 448 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R2 SYMATTR Value 193K SYMBOL res 640 464 R0 SYMATTR InstName R3 SYMATTR Value 20K SYMBOL cap 464 640 M90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C2 SYMATTR Value .001µ SYMBOL nmos -272 -192 M0 SYMATTR InstName Q1 SYMATTR Value Si7884DP SYMBOL cap -208 0 M270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName C3 SYMATTR Value .1µ SYMBOL ind -336 0 M270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 SYMATTR InstName L2 SYMATTR Value 3.3µ SYMATTR SpiceLine Rpar=2K SYMBOL res -480 256 R0 WINDOW 0 41 45 Left 2 SYMATTR InstName R4 SYMATTR Value .007 SYMBOL schottky -192 -192 R0 WINDOW 3 32 63 Left 2 SYMATTR Value BAT54 SYMATTR InstName D2 SYMATTR Description Diode SYMATTR Type diode SYMBOL res -416 448 M90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R5 SYMATTR Value 62.5K SYMBOL res -288 464 R0 SYMATTR InstName R6 SYMATTR Value 20K SYMBOL cap -48 640 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C4 SYMATTR Value .001µ SYMBOL cap -256 -384 R0 SYMATTR InstName C5 SYMATTR Value 4.7µ SYMBOL res -128 -336 R0 SYMATTR InstName R7 SYMATTR Value 100K SYMBOL res 480 -320 R0 WINDOW 3 27 86 Left 2 SYMATTR Value 100K SYMATTR InstName R8 SYMBOL cap 800 496 R0 SYMATTR InstName C6 SYMATTR Value 150µ SYMATTR SpiceLine Rser=50m SYMBOL cap -480 496 R0 WINDOW 3 25 61 Left 2 SYMATTR Value 150µ SYMATTR InstName C7 SYMATTR SpiceLine Rser=50m SYMBOL cap -64 576 M270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 WINDOW 39 -17 42 VBottom 2 SYMATTR InstName C8 SYMATTR Value 680p SYMATTR SpiceLine Rser=15K SYMBOL LTC3857 208 272 R0 SYMATTR InstName U1 SYMBOL nmos -272 96 M0 SYMATTR InstName Q2 SYMATTR Value Si7884DP SYMBOL nmos 624 -192 R0 SYMATTR InstName Q3 SYMATTR Value Si7884DP SYMBOL nmos 624 96 R0 SYMATTR InstName Q4 SYMATTR Value Si7884DP SYMBOL voltage 736 -416 R0 SYMATTR InstName V2 SYMATTR Value 5 SYMBOL cap 480 576 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 WINDOW 39 -17 42 VBottom 2 SYMATTR InstName C9 SYMATTR Value 680p SYMATTR SpiceLine Rser=15K SYMBOL res -608 464 R0 SYMATTR InstName Rload1 SYMATTR Value .66 SYMBOL res 912 464 R0 SYMATTR InstName Rload2 SYMATTR Value 2.4 TEXT 680 704 Left 2 !.tran 1m startup