Version 4 SHEET 1 1564 1392 WIRE 960 -464 -608 -464 WIRE 0 -400 -96 -400 WIRE 96 -400 0 -400 WIRE 192 -400 96 -400 WIRE 288 -400 192 -400 WIRE 336 -400 288 -400 WIRE -432 -384 -464 -384 WIRE -304 -384 -352 -384 WIRE 336 -384 336 -400 WIRE -96 -368 -96 -400 WIRE 192 -368 192 -400 WIRE 480 -368 480 -384 WIRE 784 -320 784 -352 WIRE -704 -304 -960 -304 WIRE -608 -304 -608 -464 WIRE -608 -304 -704 -304 WIRE -416 -304 -608 -304 WIRE -192 -304 -416 -304 WIRE 336 -288 336 -304 WIRE -704 -272 -704 -304 WIRE -416 -272 -416 -304 WIRE 480 -272 480 -304 WIRE 480 -272 384 -272 WIRE 592 -272 480 -272 WIRE 672 -272 592 -272 WIRE -192 -256 -192 -304 WIRE -96 -256 -96 -288 WIRE 0 -256 0 -400 WIRE 96 -256 96 -400 WIRE 192 -256 192 -288 WIRE 288 -256 288 -400 WIRE 384 -256 384 -272 WIRE 480 -256 480 -272 WIRE 672 -256 672 -272 WIRE 960 -240 960 -464 WIRE -320 -192 -368 -192 WIRE -304 -192 -304 -384 WIRE -288 -192 -304 -192 WIRE 784 -192 784 -256 WIRE 784 -192 768 -192 WIRE -704 -160 -704 -192 WIRE 912 -160 800 -160 WIRE -368 -96 -368 -112 WIRE -320 -96 -320 -192 WIRE -288 -96 -320 -96 WIRE 800 -96 800 -160 WIRE 800 -96 768 -96 WIRE 912 -96 912 -112 WIRE -368 0 -368 -32 WIRE -288 0 -368 0 WIRE 912 0 912 -32 WIRE 912 0 768 0 WIRE -368 16 -368 0 WIRE 912 16 912 0 WIRE -768 96 -896 96 WIRE -688 96 -768 96 WIRE -672 96 -688 96 WIRE -576 96 -592 96 WIRE -544 96 -576 96 WIRE -416 96 -416 -176 WIRE -416 96 -464 96 WIRE -368 96 -368 80 WIRE -368 96 -416 96 WIRE -288 96 -368 96 WIRE 912 96 912 80 WIRE 912 96 768 96 WIRE 960 96 960 -144 WIRE 960 96 912 96 WIRE 1008 96 960 96 WIRE 1136 96 1088 96 WIRE 1152 96 1136 96 WIRE 1248 96 1232 96 WIRE 1312 96 1248 96 WIRE 1408 96 1312 96 WIRE -896 112 -896 96 WIRE -768 112 -768 96 WIRE -416 112 -416 96 WIRE 960 112 960 96 WIRE 1312 112 1312 96 WIRE 1408 112 1408 96 WIRE -288 192 -368 192 WIRE 912 192 768 192 WIRE -896 208 -896 192 WIRE -768 208 -768 176 WIRE 1312 208 1312 176 WIRE 1408 208 1408 192 WIRE -416 224 -416 208 WIRE 960 224 960 208 WIRE -576 288 -576 96 WIRE -480 288 -576 288 WIRE -368 288 -400 288 WIRE -288 288 -368 288 WIRE 816 288 768 288 WIRE 944 288 816 288 WIRE 1136 288 1136 96 WIRE 1136 288 1024 288 WIRE -368 304 -368 288 WIRE 816 304 816 288 WIRE -688 384 -688 96 WIRE -576 384 -688 384 WIRE -480 384 -576 384 WIRE -368 384 -368 368 WIRE -368 384 -400 384 WIRE -288 384 -368 384 WIRE 816 384 816 368 WIRE 816 384 768 384 WIRE 944 384 816 384 WIRE 1248 384 1248 96 WIRE 1248 384 1024 384 WIRE -576 400 -576 384 WIRE -688 480 -688 464 WIRE -576 480 -576 464 WIRE -576 480 -688 480 WIRE -288 480 -576 480 WIRE 1248 480 1248 464 WIRE 1248 480 768 480 WIRE -688 496 -688 480 WIRE 1248 496 1248 480 WIRE -384 576 -400 576 WIRE -288 576 -320 576 WIRE 800 576 768 576 WIRE 880 576 864 576 WIRE -688 592 -688 576 WIRE 1248 592 1248 576 WIRE -384 672 -400 672 WIRE -288 672 -320 672 WIRE 800 672 768 672 WIRE 880 672 864 672 WIRE -192 768 -192 736 WIRE -192 768 -288 768 WIRE 480 768 480 736 WIRE 576 768 576 736 WIRE 672 768 672 736 WIRE 192 784 192 736 WIRE 208 784 192 784 WIRE 288 784 288 736 WIRE 288 784 272 784 WIRE -288 816 -288 768 WIRE -192 816 -208 816 WIRE -96 816 -96 736 WIRE -96 816 -128 816 WIRE -80 816 -96 816 WIRE 0 816 0 736 WIRE 0 816 -16 816 WIRE 96 816 96 736 WIRE 192 848 192 784 WIRE 288 848 288 784 WIRE 480 848 480 832 WIRE 576 848 576 832 WIRE -960 864 -960 -304 WIRE -368 864 -960 864 WIRE 0 864 0 816 WIRE 0 864 -272 864 WIRE 16 864 0 864 WIRE 128 864 112 864 WIRE 0 912 0 864 WIRE 0 1008 0 992 WIRE 192 1008 192 928 WIRE 192 1008 0 1008 WIRE 288 1008 288 928 WIRE 304 1008 288 1008 WIRE 384 1008 384 736 WIRE 384 1008 368 1008 WIRE 0 1024 0 1008 WIRE 0 1120 0 1104 WIRE 0 1120 -144 1120 WIRE 288 1120 288 1008 WIRE 288 1120 0 1120 WIRE 384 1120 384 1008 WIRE 384 1120 368 1120 WIRE 400 1120 384 1120 WIRE 496 1120 480 1120 WIRE -144 1136 -144 1120 WIRE 0 1152 0 1120 WIRE -144 1232 -144 1216 WIRE 0 1232 0 1216 FLAG -704 -160 0 FLAG -704 -304 Vin FLAG 672 768 0 FLAG 480 -384 0 FLAG 336 -288 0 FLAG -416 224 0 FLAG 592 -272 Vcc FLAG -368 -112 Vcc FLAG -768 208 0 FLAG -896 96 Vout1 FLAG -400 576 0 FLAG -400 672 0 FLAG -688 592 0 FLAG 960 224 0 FLAG 912 -112 Vcc FLAG 1408 208 0 FLAG 1312 208 0 FLAG 1408 96 Vout2 FLAG 880 576 0 FLAG 880 672 0 FLAG 1248 592 0 FLAG 128 864 0 FLAG -208 816 Vcc FLAG -144 1232 0 FLAG 0 1232 0 FLAG -144 1120 Vout3 FLAG 480 848 0 FLAG 576 848 0 FLAG 496 1120 0 FLAG -464 -384 0 FLAG 784 -352 0 FLAG -896 208 0 SYMBOL PowerProducts\\LTC3853 240 240 R0 SYMATTR InstName U1 SYMBOL voltage -704 -288 R0 SYMATTR InstName V1 SYMATTR Value 12 SYMBOL cap 496 -304 R180 WINDOW 0 24 64 Left 2 WINDOW 3 24 8 Left 2 SYMATTR InstName C1 SYMATTR Value 4.7µ SYMBOL res -112 -384 R0 SYMATTR InstName R1 SYMATTR Value 100K SYMBOL res 176 -384 R0 SYMATTR InstName R2 SYMATTR Value 100K SYMBOL voltage 336 -400 R0 SYMATTR InstName V2 SYMATTR Value 5 SYMBOL nmos -368 -272 M0 WINDOW 3 53 72 Left 2 SYMATTR Value Si4816BDY_1 SYMATTR InstName Q1 SYMBOL cap -384 16 R0 SYMATTR InstName C2 SYMATTR Value .1µ SYMBOL schottky -384 -96 R0 WINDOW 3 -18 65 Left 2 SYMATTR Value CMDSH2-3 SYMATTR InstName D1 SYMATTR Description Diode SYMATTR Type diode SYMBOL nmos -368 112 M0 SYMATTR InstName Q2 SYMATTR Value Si4816BDY_1 SYMBOL ind -448 112 M270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 SYMATTR InstName L1 SYMATTR Value 1.5µ SYMBOL res -576 80 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R3 SYMATTR Value 8m SYMBOL res -496 304 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R4 SYMATTR Value 10 SYMBOL res -496 400 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R5 SYMATTR Value 10 SYMBOL cap -384 304 R0 SYMATTR InstName C3 SYMATTR Value 1000p SYMBOL cap -784 112 R0 SYMATTR InstName C4 SYMATTR Value 220µ SYMBOL cap -320 560 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 WINDOW 39 51 88 VTop 2 SYMATTR InstName C5 SYMATTR Value 1500p SYMATTR SpiceLine Rser=18K Cpar=220p SYMBOL cap -320 656 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C6 SYMATTR Value .001µ SYMBOL res -704 368 R0 SYMATTR InstName R6 SYMATTR Value 43.2K SYMBOL res -704 480 R0 SYMATTR InstName R7 SYMATTR Value 20K SYMBOL cap -592 400 R0 SYMATTR InstName C7 SYMATTR Value 10p SYMBOL nmos 912 -240 R0 WINDOW 3 53 72 Left 2 SYMATTR Value Si4816BDY_1 SYMATTR InstName Q3 SYMBOL cap 928 16 M0 SYMATTR InstName C8 SYMATTR Value .1µ SYMBOL schottky 928 -96 M0 WINDOW 3 -18 65 Left 2 SYMATTR Value CMDSH2-3 SYMATTR InstName D2 SYMATTR Description Diode SYMATTR Type diode SYMBOL nmos 912 112 R0 SYMATTR InstName Q4 SYMATTR Value Si4816BDY_1 SYMBOL ind 992 112 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 SYMATTR InstName L2 SYMATTR Value 1.5µ SYMBOL res 1136 80 M90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R8 SYMATTR Value 8m SYMBOL res 1040 304 M270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R9 SYMATTR Value 10 SYMBOL res 1040 400 M270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R10 SYMATTR Value 10 SYMBOL cap 800 304 R0 SYMATTR InstName C9 SYMATTR Value 1000p SYMBOL cap 1296 112 R0 SYMATTR InstName C10 SYMATTR Value 220µ SYMBOL cap 800 560 M90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 WINDOW 39 51 88 VTop 2 SYMATTR InstName C11 SYMATTR Value 1500p SYMATTR SpiceLine Rser=12K Cpar=220p SYMBOL cap 800 656 M90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C12 SYMATTR Value .001µ SYMBOL res 1232 368 R0 SYMATTR InstName R11 SYMATTR Value 24.9K SYMBOL res 1232 480 R0 SYMATTR InstName R12 SYMATTR Value 20K SYMBOL nmos -368 816 M90 WINDOW 0 72 48 VLeft 2 WINDOW 3 95 136 VLeft 2 SYMATTR InstName Q5 SYMATTR Value Si4816BDY_1 SYMBOL cap -80 832 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName C13 SYMATTR Value .1µ SYMBOL schottky -192 832 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName D3 SYMATTR Value CMDSH2-3 SYMATTR Description Diode SYMATTR Type diode SYMBOL nmos 16 816 M90 WINDOW 0 62 42 VLeft 2 WINDOW 3 84 124 VLeft 2 SYMATTR InstName Q6 SYMATTR Value Si4816BDY_1 SYMBOL ind 16 896 M0 SYMATTR InstName L3 SYMATTR Value 2.2µ SYMBOL res -16 1008 R0 SYMATTR InstName R13 SYMATTR Value 8m SYMBOL res 176 944 M180 WINDOW 0 36 76 Left 2 WINDOW 3 36 40 Left 2 SYMATTR InstName R14 SYMATTR Value 10 SYMBOL res 272 944 M180 WINDOW 0 36 76 Left 2 WINDOW 3 36 40 Left 2 SYMATTR InstName R15 SYMATTR Value 10 SYMBOL cap 208 800 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName C14 SYMATTR Value 1000p SYMBOL cap -16 1152 R0 SYMATTR InstName C15 SYMATTR Value 220µ SYMBOL cap 464 768 R0 WINDOW 0 44 16 Bottom 2 WINDOW 3 52 52 Top 2 WINDOW 39 52 105 Top 2 SYMATTR InstName C16 SYMATTR Value 1500p SYMATTR SpiceLine Rser=18K Cpar=220p SYMBOL cap 560 768 R0 SYMATTR InstName C17 SYMATTR Value .001µ SYMBOL res 272 1136 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R16 SYMATTR Value 63.4K SYMBOL res 384 1136 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R17 SYMATTR Value 20K SYMBOL cap 304 1024 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName C18 SYMATTR Value 10p SYMBOL voltage -336 -384 M270 WINDOW 0 32 56 VTop 2 WINDOW 3 -32 56 VBottom 2 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V3 SYMATTR Value SINE(1 1 500K) SYMBOL cap 768 -320 R0 WINDOW 39 24 77 Left 2 SYMATTR InstName C19 SYMATTR Value .002µ SYMATTR SpiceLine Rser=10K SYMBOL res -912 96 R0 SYMATTR InstName Rload1 SYMATTR Value .5 SYMBOL res 1392 96 R0 SYMATTR InstName Rload2 SYMATTR Value .36 SYMBOL res -160 1120 R0 SYMATTR InstName Rload3 SYMATTR Value .66 TEXT 824 896 Left 2 !.tran 750U startup