Version 4 SHEET 1 1196 864 WIRE 848 -384 -448 -384 WIRE -112 -368 -176 -368 WIRE 224 -368 -112 -368 WIRE 512 -368 224 -368 WIRE -176 -352 -176 -368 WIRE 736 -352 128 -352 WIRE 128 -336 128 -352 WIRE 224 -336 224 -368 WIRE 512 -320 512 -368 WIRE -176 -272 -176 -288 WIRE -112 -272 -112 -368 WIRE -96 -272 -112 -272 WIRE 0 -272 -16 -272 WIRE 464 -272 448 -272 WIRE -464 -176 -576 -176 WIRE -304 -176 -464 -176 WIRE -224 -176 -304 -176 WIRE -112 -176 -112 -272 WIRE 736 -176 736 -352 WIRE 736 -176 592 -176 WIRE 864 -176 736 -176 WIRE 944 -176 864 -176 WIRE -576 -160 -576 -176 WIRE -224 -160 -224 -176 WIRE 592 -160 592 -176 WIRE 944 -160 944 -176 WIRE -304 -144 -304 -176 WIRE 736 -144 736 -176 WIRE 0 -80 -176 -80 WIRE 544 -80 448 -80 WIRE -576 -64 -576 -80 WIRE -304 -64 -304 -80 WIRE 736 -64 736 -80 WIRE 944 -64 944 -80 WIRE -112 16 -112 -112 WIRE 0 16 -112 16 WIRE 512 16 512 -256 WIRE 512 16 448 16 WIRE -112 32 -112 16 WIRE 512 32 512 16 WIRE -448 112 -448 -384 WIRE -448 112 -528 112 WIRE -432 112 -448 112 WIRE -336 112 -352 112 WIRE -320 112 -336 112 WIRE -224 112 -224 -64 WIRE -224 112 -240 112 WIRE -112 112 -112 96 WIRE -112 112 -224 112 WIRE 0 112 -112 112 WIRE 512 112 512 96 WIRE 512 112 448 112 WIRE 592 112 592 -64 WIRE 592 112 512 112 WIRE 624 112 592 112 WIRE 736 112 704 112 WIRE 752 112 736 112 WIRE 848 112 848 -384 WIRE 848 112 832 112 WIRE -528 128 -528 112 WIRE -224 128 -224 112 WIRE 592 128 592 112 WIRE 0 208 -176 208 WIRE 544 208 448 208 WIRE -528 224 -528 208 WIRE -224 256 -224 224 WIRE 592 256 592 224 WIRE -448 304 -448 112 WIRE 0 304 -448 304 WIRE 848 304 848 112 WIRE 848 304 448 304 WIRE -464 384 -464 -176 WIRE 864 384 864 -176 WIRE -336 400 -336 112 WIRE 0 400 -336 400 WIRE 736 400 736 112 WIRE 736 400 448 400 WIRE -464 496 -464 464 WIRE 0 496 -464 496 WIRE 864 496 864 464 WIRE 864 496 448 496 WIRE -464 512 -464 496 WIRE 864 512 864 496 WIRE -192 592 -224 592 WIRE 0 592 -128 592 WIRE 560 592 448 592 WIRE 656 592 624 592 WIRE -464 608 -464 592 WIRE 864 608 864 592 WIRE 0 688 -208 688 WIRE 576 688 448 688 WIRE -208 704 -208 688 WIRE 576 704 576 688 WIRE -208 784 -208 768 WIRE 128 784 128 752 WIRE 224 784 224 752 WIRE 320 784 320 752 WIRE 576 784 576 768 FLAG -176 -272 0 FLAG -528 224 0 FLAG -224 256 0 FLAG -304 -64 0 FLAG -576 -64 0 FLAG -576 -176 OUT1 FLAG -528 112 IN FLAG -464 608 0 FLAG -208 784 0 FLAG 224 784 0 FLAG 320 784 0 FLAG 128 784 0 FLAG -224 592 0 FLAG 592 256 0 FLAG 736 -64 0 FLAG 944 -64 0 FLAG 944 -176 OUT2 FLAG 864 608 0 FLAG 576 784 0 FLAG 656 592 0 FLAG 464 -272 0 SYMBOL cap -192 -352 R0 SYMATTR InstName C1 SYMATTR Value 4.7µ SYMBOL res -112 -256 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R1 SYMATTR Value 100K SYMBOL voltage -528 112 R0 SYMATTR InstName V1 SYMATTR Value 8 SYMBOL res -448 128 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R2 SYMATTR Value 4m SYMBOL ind -336 128 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 SYMATTR InstName L1 SYMATTR Value 3.3µ SYMBOL nmos -176 -160 M0 WINDOW 0 0 9 Right 2 WINDOW 3 38 119 Right 2 SYMATTR InstName Q1 SYMATTR Value Si4840DY SYMBOL nmos -176 128 M0 WINDOW 0 -3 31 Right 2 WINDOW 3 34 105 Right 2 SYMATTR InstName Q2 SYMATTR Value Si4840DY SYMBOL cap -128 32 R0 SYMATTR InstName C2 SYMATTR Value .1µ SYMBOL schottky -128 -176 R0 SYMATTR InstName D1 SYMATTR Value MBR0540 SYMATTR Description Diode SYMATTR Type diode SYMBOL cap -320 -144 R0 SYMATTR InstName C3 SYMATTR Value 300µ SYMBOL res -480 496 R0 SYMATTR InstName R3 SYMATTR Value 12.1K SYMBOL res -480 368 R0 SYMATTR InstName R4 SYMATTR Value 232K SYMBOL cap -224 704 R0 SYMATTR InstName C4 SYMATTR Value .005µ SYMBOL cap -128 576 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 WINDOW 39 62 30 VTop 2 SYMATTR InstName C5 SYMATTR Value 15n SYMATTR SpiceLine Rser=8.66K Cpar=100p SYMBOL res 848 128 M270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R5 SYMATTR Value 3m SYMBOL ind 720 128 M270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 SYMATTR InstName L2 SYMATTR Value 1.25µ SYMBOL nmos 544 -160 R0 WINDOW 0 57 5 Left 2 WINDOW 3 53 103 Left 2 SYMATTR InstName Q3 SYMATTR Value Si4840DY SYMBOL nmos 544 128 R0 WINDOW 0 56 35 Left 2 WINDOW 3 59 95 Left 2 SYMATTR InstName Q4 SYMATTR Value Si4840DY SYMBOL cap 496 32 R0 SYMATTR InstName C6 SYMATTR Value .1µ SYMBOL cap 720 -144 R0 SYMATTR InstName C7 SYMATTR Value 300µ SYMBOL res 848 496 R0 SYMATTR InstName R6 SYMATTR Value 12.1K SYMBOL res 848 368 R0 SYMATTR InstName R7 SYMATTR Value 110K SYMBOL cap 560 704 R0 WINDOW 3 24 57 Left 2 SYMATTR Value .005µ SYMATTR InstName C8 SYMBOL cap 560 576 M90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 WINDOW 39 63 31 VTop 2 SYMATTR InstName C9 SYMATTR Value 15n SYMATTR SpiceLine Rser=2.7K Cpar=100p SYMBOL schottky 496 -320 R0 SYMATTR InstName D2 SYMATTR Value MBR0540 SYMATTR Description Diode SYMATTR Type diode SYMBOL PowerProducts\\LTC3788-1 224 208 R0 SYMATTR InstName U1 SYMBOL res -592 -176 R0 SYMATTR InstName Rload1 SYMATTR Value 8 SYMBOL res 928 -176 R0 SYMATTR InstName Rload2 SYMATTR Value 1.2 TEXT 800 712 Left 2 !.tran 2m startup