Version 4 SHEET 1 1204 948 WIRE -320 -432 -448 -432 WIRE 64 -432 -320 -432 WIRE 688 -432 64 -432 WIRE -448 -416 -448 -432 WIRE 496 -416 -128 -416 WIRE 800 -416 496 -416 WIRE -160 -400 -240 -400 WIRE 208 -400 -160 -400 WIRE 528 -400 208 -400 WIRE 800 -400 800 -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 -240 -304 -240 -320 WIRE 800 -304 800 -320 WIRE -128 -288 -128 -416 WIRE -112 -288 -128 -288 WIRE -16 -288 -32 -288 WIRE 464 -288 432 -288 WIRE -128 -192 -128 -288 WIRE -16 -192 -128 -192 WIRE 496 -192 496 -416 WIRE 496 -192 432 -192 WIRE 528 -192 528 -400 WIRE -320 -176 -320 -432 WIRE -160 -176 -160 -400 WIRE 688 -176 688 -432 WIRE -16 -96 -272 -96 WIRE 640 -96 432 -96 WIRE -464 0 -496 0 WIRE -320 0 -320 -80 WIRE -320 0 -384 0 WIRE -272 0 -320 0 WIRE -160 0 -160 -112 WIRE -160 0 -208 0 WIRE -16 0 -160 0 WIRE 528 0 528 -128 WIRE 528 0 432 0 WIRE 592 0 528 0 WIRE 688 0 688 -80 WIRE 688 0 656 0 WIRE 736 0 688 0 WIRE 896 0 816 0 WIRE -320 96 -320 0 WIRE -16 96 -320 96 WIRE 688 96 688 0 WIRE 688 96 432 96 WIRE -320 112 -320 96 WIRE 688 112 688 96 WIRE -16 192 -272 192 WIRE 640 192 432 192 WIRE -320 224 -320 208 WIRE 688 224 688 208 WIRE -496 288 -496 0 WIRE -16 288 -496 288 WIRE 896 288 896 0 WIRE 896 288 432 288 WIRE -496 384 -496 368 WIRE -16 384 -496 384 WIRE 896 384 896 368 WIRE 896 384 432 384 WIRE -496 480 -496 384 WIRE -496 480 -624 480 WIRE -416 480 -496 480 WIRE -320 480 -336 480 WIRE -16 480 -320 480 WIRE 672 480 432 480 WIRE 720 480 672 480 WIRE 896 480 896 384 WIRE 896 480 800 480 WIRE 1008 480 896 480 WIRE -624 496 -624 480 WIRE -320 496 -320 480 WIRE 672 496 672 480 WIRE 1008 496 1008 480 WIRE -496 512 -496 480 WIRE 896 512 896 480 WIRE -176 576 -192 576 WIRE -16 576 -112 576 WIRE 528 576 432 576 WIRE 608 576 592 576 WIRE -624 592 -624 576 WIRE -496 592 -496 576 WIRE -320 592 -320 576 WIRE 672 592 672 576 WIRE 896 592 896 576 WIRE 1008 592 1008 576 WIRE -112 672 -128 672 WIRE -16 672 -48 672 WIRE 448 672 432 672 WIRE 544 672 512 672 WIRE 64 752 64 736 WIRE 208 752 208 736 WIRE 352 752 352 736 FLAG 688 224 0 FLAG 352 752 0 FLAG 64 752 0 FLAG 672 592 0 FLAG 544 672 0 FLAG 608 576 0 FLAG -320 224 0 FLAG -320 592 0 FLAG -128 672 0 FLAG -448 -320 0 FLAG -240 -304 0 FLAG 464 -288 0 FLAG 896 592 0 FLAG -496 592 0 FLAG -192 576 0 FLAG -624 592 0 FLAG 1008 592 0 FLAG 208 752 0 FLAG -448 -432 IN FLAG -624 480 OUT1 FLAG 1008 480 OUT2 FLAG 800 -304 0 FLAG 800 -416 RUN SYMBOL voltage -448 -432 R0 SYMATTR InstName V1 SYMATTR Value 23 SYMBOL cap 592 16 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName C1 SYMATTR Value .1µ SYMBOL ind 720 16 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 880 272 R0 SYMATTR InstName R1 SYMATTR Value 10m SYMBOL schottky 512 -192 R0 WINDOW 3 32 63 Left 2 SYMATTR Value BAT54 SYMATTR InstName D1 SYMATTR Description Diode SYMATTR Type diode SYMBOL res 816 464 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R2 SYMATTR Value 193K SYMBOL res 656 480 R0 SYMATTR InstName R3 SYMATTR Value 20K SYMBOL cap 512 656 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C2 SYMATTR Value .001µ SYMBOL nmos -272 -176 M0 WINDOW 0 40 -10 Right 2 WINDOW 3 32 102 Right 2 SYMATTR InstName Q3 SYMATTR Value Si7884DP SYMBOL cap -208 16 M270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName C4 SYMATTR Value .1µ SYMBOL ind -368 16 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 -512 272 R0 WINDOW 0 41 45 Left 2 SYMATTR InstName R5 SYMATTR Value 7m SYMBOL schottky -176 -176 R0 WINDOW 3 32 63 Left 2 SYMATTR Value BAT54 SYMATTR InstName D2 SYMATTR Description Diode SYMATTR Type diode SYMBOL res -432 464 M90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R6 SYMATTR Value 62.5K SYMBOL res -336 480 R0 SYMATTR InstName R7 SYMATTR Value 20K SYMBOL cap -112 656 M90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C5 SYMATTR Value .001µ SYMBOL cap -256 -384 R0 SYMATTR InstName C6 SYMATTR Value 1µ SYMBOL cap 880 512 R0 SYMATTR InstName C7 SYMATTR Value 150µ SYMATTR SpiceLine Rser=50m SYMBOL cap -512 512 R0 WINDOW 3 25 61 Left 2 SYMATTR Value 150µ SYMATTR InstName C8 SYMATTR SpiceLine Rser=50m SYMBOL cap -112 592 M270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 WINDOW 39 -21 32 VBottom 2 SYMATTR InstName C9 SYMATTR Value 680p SYMATTR SpiceLine Rser=15K SYMBOL res -640 480 R0 SYMATTR InstName Rload1 SYMATTR Value 1.5 SYMBOL res 992 480 R0 SYMATTR InstName Rload2 SYMATTR Value 5 SYMBOL nmos -272 112 M0 WINDOW 0 -7 24 Right 2 WINDOW 3 12 97 Right 2 SYMATTR InstName Q1 SYMATTR Value Si7884DP SYMBOL nmos 640 -176 R0 SYMATTR InstName Q2 SYMATTR Value Si7884DP SYMBOL nmos 640 112 R0 SYMATTR InstName Q4 SYMATTR Value Si7884DP SYMBOL voltage 800 -416 R0 SYMATTR InstName V2 SYMATTR Value 5 SYMBOL cap 528 592 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 WINDOW 39 -21 32 VBottom 2 SYMATTR InstName C3 SYMATTR Value 680p SYMATTR SpiceLine Rser=15K SYMBOL PowerProducts\\LTC3857-1 208 192 R0 SYMATTR InstName U1 SYMBOL res -16 -304 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R4 SYMATTR Value 100K TEXT 648 704 Left 2 !.tran 1m startup