Version 4 SHEET 1 1208 928 WIRE -48 -80 -160 -80 WIRE 656 -80 -48 -80 WIRE -160 -64 -160 -80 WIRE -48 -16 -48 -80 WIRE -16 -16 -48 -16 WIRE 464 -16 432 -16 WIRE 512 -16 464 -16 WIRE 592 -16 576 -16 WIRE 464 0 464 -16 WIRE 656 0 656 -80 WIRE -160 32 -160 16 WIRE 608 80 432 80 WIRE -176 176 -224 176 WIRE -16 176 -96 176 WIRE 464 176 464 64 WIRE 464 176 432 176 WIRE 528 176 464 176 WIRE 656 176 656 96 WIRE 656 176 592 176 WIRE 656 272 656 176 WIRE 656 272 432 272 WIRE 688 272 656 272 WIRE 784 272 768 272 WIRE 800 272 784 272 WIRE 896 272 880 272 WIRE 928 272 896 272 WIRE 960 272 928 272 WIRE 1120 272 960 272 WIRE 656 288 656 272 WIRE 960 288 960 272 WIRE 1120 288 1120 272 WIRE -144 368 -224 368 WIRE -16 368 -80 368 WIRE 608 368 432 368 WIRE 960 384 960 352 WIRE 1120 384 1120 368 WIRE 656 416 656 384 WIRE -192 464 -224 464 WIRE -16 464 -128 464 WIRE 784 464 784 272 WIRE 784 464 432 464 WIRE -16 560 -48 560 WIRE 896 560 896 272 WIRE 896 560 432 560 WIRE 928 560 928 272 WIRE -16 656 -48 656 WIRE 928 656 928 640 WIRE 928 656 432 656 WIRE 928 672 928 656 WIRE 928 768 928 752 FLAG 656 416 0 FLAG 960 384 0 FLAG 1120 384 0 FLAG 928 768 0 FLAG 1120 272 OUT FLAG 592 -16 0 FLAG -224 464 0 FLAG -224 368 0 FLAG -160 32 0 FLAG -224 176 0 FLAG -48 560 0 FLAG -48 656 0 FLAG -160 -80 IN SYMBOL nmos 608 0 R0 SYMATTR InstName Q1 SYMATTR Value Si4840DY SYMBOL nmos 608 288 R0 SYMATTR InstName Q2 SYMATTR Value Si4840DY SYMBOL ind 672 288 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 SYMATTR InstName L1 SYMATTR Value 3.3µ SYMBOL res 784 288 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R1 SYMATTR Value .012 SYMBOL cap 944 288 R0 WINDOW 39 23 61 Left 2 WINDOW 3 38 35 Left 2 SYMATTR SpiceLine Rser=10m SYMATTR Value 150µ SYMATTR InstName C1 SYMBOL res 912 544 R0 SYMATTR InstName R2 SYMATTR Value 215K SYMBOL res 912 656 R0 SYMATTR InstName R3 SYMATTR Value 68.1K SYMBOL cap 528 192 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName C2 SYMATTR Value .1µ SYMBOL schottky 448 0 R0 WINDOW 3 21 65 Left 2 SYMATTR Value MBR0540 SYMATTR InstName D1 SYMATTR Description Diode SYMATTR Type diode SYMBOL cap 512 0 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName C3 SYMATTR Value 4.7µ SYMBOL cap -128 448 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 WINDOW 39 60 32 VTop 2 SYMATTR InstName C4 SYMATTR Value 1200p SYMATTR SpiceLine Rser=9.53K Cpar=150p SYMBOL cap -80 352 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C5 SYMATTR Value .001µ SYMBOL voltage -160 -80 R0 SYMATTR Value 12 SYMATTR InstName V1 SYMBOL voltage -80 176 R90 WINDOW 0 -32 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName V2 SYMATTR Value 2 SYMBOL LTC3834-1 208 320 R0 SYMATTR InstName U1 SYMBOL res 1104 272 R0 SYMATTR InstName Rload SYMATTR Value 1 TEXT 560 696 Left 2 !.tran 1m startup