Version 4 SHEET 1 1204 948 WIRE -320 -432 -448 -432 WIRE 64 -432 -320 -432 WIRE 656 -432 64 -432 WIRE -448 -416 -448 -432 WIRE 464 -416 -48 -416 WIRE 768 -416 464 -416 WIRE -176 -400 -240 -400 WIRE -112 -400 -176 -400 WIRE -32 -400 -112 -400 WIRE 208 -400 -32 -400 WIRE 512 -400 208 -400 WIRE 560 -400 512 -400 WIRE 768 -400 768 -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 -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 512 -304 512 -400 WIRE 768 -304 768 -320 WIRE 560 -288 560 -400 WIRE -112 -208 -112 -240 WIRE -16 -208 -112 -208 WIRE 512 -208 512 -224 WIRE 512 -208 432 -208 WIRE -320 -192 -320 -432 WIRE -176 -192 -176 -400 WIRE 656 -192 656 -432 WIRE -16 -112 -272 -112 WIRE 608 -112 432 -112 WIRE -464 -16 -496 -16 WIRE -320 -16 -320 -96 WIRE -320 -16 -384 -16 WIRE -272 -16 -320 -16 WIRE -176 -16 -176 -128 WIRE -176 -16 -208 -16 WIRE -16 -16 -176 -16 WIRE 560 -16 560 -224 WIRE 560 -16 432 -16 WIRE 656 -16 656 -96 WIRE 656 -16 624 -16 WIRE 704 -16 656 -16 WIRE 832 -16 784 -16 WIRE -320 80 -320 -16 WIRE -16 80 -320 80 WIRE 656 80 656 -16 WIRE 656 80 432 80 WIRE -320 96 -320 80 WIRE 656 96 656 80 WIRE -16 176 -272 176 WIRE 608 176 432 176 WIRE -320 208 -320 192 WIRE 656 208 656 192 WIRE -496 272 -496 -16 WIRE -16 272 -496 272 WIRE 832 272 832 -16 WIRE 832 272 432 272 WIRE -496 368 -496 352 WIRE -16 368 -496 368 WIRE 832 368 832 352 WIRE 832 368 432 368 WIRE -496 464 -496 368 WIRE -496 464 -624 464 WIRE -448 464 -496 464 WIRE -320 464 -368 464 WIRE -16 464 -320 464 WIRE 672 464 432 464 WIRE 720 464 672 464 WIRE 832 464 832 368 WIRE 832 464 800 464 WIRE 944 464 832 464 WIRE -624 480 -624 464 WIRE -496 480 -496 464 WIRE -320 480 -320 464 WIRE 672 480 672 464 WIRE 832 480 832 464 WIRE 944 480 944 464 WIRE -128 560 -144 560 WIRE -16 560 -64 560 WIRE 480 560 432 560 WIRE 560 560 544 560 WIRE -624 576 -624 560 WIRE -496 576 -496 544 WIRE -320 576 -320 560 WIRE 672 576 672 560 WIRE 832 576 832 544 WIRE 944 576 944 560 WIRE -128 656 -144 656 WIRE -16 656 -64 656 WIRE 480 656 432 656 WIRE 560 656 544 656 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 656 208 0 FLAG 352 928 0 FLAG 64 928 0 FLAG 672 576 0 FLAG 560 656 0 FLAG 560 560 0 FLAG -320 208 0 FLAG -320 576 0 FLAG -144 656 0 FLAG -448 -320 0 FLAG -240 -304 0 FLAG 464 752 0 FLAG 832 576 0 FLAG -496 576 0 FLAG -144 560 0 FLAG -624 576 0 FLAG 944 576 0 FLAG 208 928 0 FLAG -448 -432 IN FLAG -624 464 OUT1 FLAG 944 464 OUT2 FLAG 768 -304 0 FLAG 768 -416 RUN SYMBOL voltage -448 -432 R0 SYMATTR InstName V1 SYMATTR Value 12 SYMBOL cap 560 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 816 256 R0 SYMATTR InstName R1 SYMATTR Value .01 SYMBOL schottky 544 -288 R0 WINDOW 3 32 63 Left 2 SYMATTR Value BAT54 SYMATTR InstName D1 SYMATTR Description Diode SYMATTR Type diode SYMBOL res 816 448 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R2 SYMATTR Value 193K SYMBOL res 656 464 R0 SYMATTR InstName R3 SYMATTR Value 20K SYMBOL cap 544 640 R90 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 Q3 SYMATTR Value Si7884DP SYMBOL cap -208 0 M270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName C4 SYMATTR Value .1µ SYMBOL ind -368 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 -512 256 R0 WINDOW 0 41 45 Left 2 SYMATTR InstName R5 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 -464 448 M90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R6 SYMATTR Value 62.5K SYMBOL res -336 464 R0 SYMATTR InstName R7 SYMATTR Value 20K SYMBOL cap -128 640 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 4.7µ SYMBOL res -128 -336 R0 SYMATTR InstName R8 SYMATTR Value 100K SYMBOL res 528 -320 M0 SYMATTR InstName R9 SYMATTR Value 100K SYMBOL cap 816 480 R0 SYMATTR InstName C7 SYMATTR Value 150µ SYMATTR SpiceLine Rser=50m SYMBOL cap -512 480 R0 WINDOW 3 25 61 Left 2 SYMATTR Value 150µ SYMATTR InstName C8 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 C9 SYMATTR Value 680p SYMATTR SpiceLine Rser=15K SYMBOL res -640 464 R0 SYMATTR InstName Rload1 SYMATTR Value .66 SYMBOL res 928 464 R0 SYMATTR InstName Rload2 SYMATTR Value 2.4 SYMBOL nmos -272 96 M0 SYMATTR InstName Q1 SYMATTR Value Si7884DP SYMBOL nmos 608 -192 R0 SYMATTR InstName Q2 SYMATTR Value Si7884DP SYMBOL nmos 608 96 R0 SYMATTR InstName Q4 SYMATTR Value Si7884DP SYMBOL voltage 768 -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 C3 SYMATTR Value 680p SYMATTR SpiceLine Rser=15K SYMBOL PowerProducts\\LTC3858 208 272 R0 SYMATTR InstName U1 TEXT 648 704 Left 2 !.tran 1m startup