Version 4 SHEET 1 1228 928 WIRE 80 -112 -176 -112 WIRE 656 -112 80 -112 WIRE -176 -96 -176 -112 WIRE 80 -80 80 -112 WIRE 464 -16 432 -16 WIRE 528 -16 464 -16 WIRE 608 -16 592 -16 WIRE -176 0 -176 -16 WIRE 464 0 464 -16 WIRE 656 0 656 -112 WIRE 608 80 432 80 WIRE -192 176 -208 176 WIRE -80 176 -112 176 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 704 272 656 272 WIRE 816 272 784 272 WIRE 832 272 816 272 WIRE 928 272 912 272 WIRE 960 272 928 272 WIRE 992 272 960 272 WIRE 1136 272 992 272 WIRE 656 288 656 272 WIRE 1136 288 1136 272 WIRE 992 304 992 272 WIRE 608 368 432 368 WIRE 992 384 992 368 WIRE 1136 384 1136 368 WIRE 656 416 656 384 WIRE 816 464 816 272 WIRE 816 464 432 464 WIRE -208 560 -288 560 WIRE -80 560 -144 560 WIRE 928 560 928 272 WIRE 928 560 432 560 WIRE 960 560 960 272 WIRE -256 656 -288 656 WIRE -80 656 -192 656 WIRE 960 656 960 640 WIRE 960 656 432 656 WIRE 960 672 960 656 WIRE 80 752 80 720 WIRE 272 752 272 720 WIRE 960 768 960 752 FLAG 272 752 0 FLAG 80 752 0 FLAG 656 416 0 FLAG 992 384 0 FLAG 1136 384 0 FLAG 960 768 0 FLAG 1136 272 OUT FLAG 608 -16 0 FLAG -288 656 0 FLAG -288 560 0 FLAG -176 0 0 FLAG -208 176 0 FLAG -176 -112 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 688 288 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 SYMATTR InstName L1 SYMATTR Value 3.2µ SYMBOL res 816 288 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R1 SYMATTR Value .012 SYMBOL cap 976 304 R0 WINDOW 39 22 63 Left 2 WINDOW 3 39 33 Left 2 SYMATTR SpiceLine Rser=10m SYMATTR Value 150µ SYMATTR InstName C1 SYMBOL res 944 544 R0 SYMATTR InstName R2 SYMATTR Value 215K SYMBOL res 944 656 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 22 66 Left 2 SYMATTR Value MBR0540 SYMATTR InstName D1 SYMATTR Description Diode SYMATTR Type diode SYMBOL cap 528 0 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName C3 SYMATTR Value 4.7µ SYMBOL cap -192 640 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 -144 544 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C5 SYMATTR Value .001µ SYMBOL voltage -176 -112 R0 WINDOW 3 20 93 Left 2 SYMATTR Value 12 SYMATTR InstName V1 SYMBOL voltage -96 176 R90 WINDOW 0 -32 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName V2 SYMATTR Value 2 SYMBOL LTC3834 176 320 R0 SYMATTR InstName U1 SYMBOL res 1120 272 R0 SYMATTR InstName Rload SYMATTR Value 1 TEXT 512 712 Left 2 !.tran 1m startup