Version 4 SHEET 1 1204 948 WIRE -320 -432 -448 -432 WIRE -48 -432 -320 -432 WIRE 64 -432 -48 -432 WIRE 464 -432 64 -432 WIRE 656 -432 464 -432 WIRE -448 -416 -448 -432 WIRE -176 -400 -240 -400 WIRE -112 -400 -176 -400 WIRE 208 -400 -112 -400 WIRE 512 -400 208 -400 WIRE 560 -400 512 -400 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 -432 WIRE -16 -304 -48 -304 WIRE 464 -304 464 -432 WIRE 464 -304 432 -304 WIRE 512 -304 512 -400 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 720 -16 656 -16 WIRE 848 -16 800 -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 848 272 848 -16 WIRE 848 272 432 272 WIRE -496 368 -496 352 WIRE -16 368 -496 368 WIRE 848 368 848 352 WIRE 848 368 432 368 WIRE -496 464 -496 368 WIRE -496 464 -640 464 WIRE -448 464 -496 464 WIRE -320 464 -368 464 WIRE -16 464 -320 464 WIRE 672 464 432 464 WIRE 736 464 672 464 WIRE 848 464 848 368 WIRE 848 464 816 464 WIRE 960 464 848 464 WIRE -640 480 -640 464 WIRE -496 480 -496 464 WIRE -320 480 -320 464 WIRE 672 480 672 464 WIRE 848 480 848 464 WIRE 960 480 960 464 WIRE -192 560 -208 560 WIRE -112 560 -128 560 WIRE -16 560 -32 560 WIRE 448 560 432 560 WIRE 544 560 528 560 WIRE 624 560 608 560 WIRE -640 576 -640 560 WIRE -496 576 -496 544 WIRE -320 576 -320 560 WIRE 672 576 672 560 WIRE 848 576 848 544 WIRE 960 576 960 560 WIRE -96 656 -112 656 WIRE -16 656 -32 656 WIRE 448 656 432 656 WIRE 528 656 512 656 WIRE -16 752 -48 752 WIRE 464 752 432 752 WIRE 64 832 64 816 WIRE 208 832 208 816 WIRE 352 832 352 816 FLAG 656 208 0 FLAG 352 832 0 FLAG 64 832 0 FLAG 672 576 0 FLAG 528 656 0 FLAG 624 560 0 FLAG -320 208 0 FLAG -320 576 0 FLAG -112 656 0 FLAG -448 -320 0 FLAG -240 -304 0 FLAG 464 752 0 FLAG -48 752 0 FLAG 848 576 0 FLAG -496 576 0 FLAG -208 560 0 FLAG -640 576 0 FLAG 960 576 0 FLAG 208 832 0 FLAG -448 -432 IN FLAG -640 464 OUT1 FLAG 960 464 OUT2 SYMBOL PowerProducts\\LTC3827 208 272 R0 SYMATTR InstName U1 SYMBOL voltage -448 -432 R0 SYMATTR InstName V1 SYMATTR Value 10 SYMBOL nmos 608 -192 R0 SYMATTR InstName Q1 SYMATTR Value FDS6680A SYMBOL nmos 608 96 R0 SYMATTR InstName Q2 SYMATTR Value FDS6680A 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 704 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 832 256 R0 SYMATTR InstName R1 SYMATTR Value .015 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 832 448 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R2 SYMATTR Value 192.5K SYMBOL res 656 464 R0 SYMATTR InstName R3 SYMATTR Value 20K SYMBOL cap 512 640 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C2 SYMATTR Value .001µ SYMBOL cap 544 576 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName C3 SYMATTR Value 220p SYMBOL res 544 544 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R4 SYMATTR Value 15K SYMBOL nmos -272 -192 M0 SYMATTR InstName Q3 SYMATTR Value FDS6680A SYMBOL nmos -272 96 M0 WINDOW 0 -2 21 Right 2 WINDOW 3 20 106 Right 2 SYMATTR InstName Q4 SYMATTR Value FDS6680A 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 .015 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 -96 640 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 832 480 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 -128 576 M270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName C9 SYMATTR Value 220p SYMBOL res -128 544 M90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R10 SYMATTR Value 15K SYMBOL res -656 464 R0 SYMATTR InstName Rload1 SYMATTR Value .66 SYMBOL res 944 464 R0 SYMATTR InstName Rload2 SYMATTR Value 2.5 TEXT 648 704 Left 2 !.tran 1m startup