Version 4 SHEET 1 1372 1000 WIRE -624 -448 -1200 -448 WIRE -640 -432 -1184 -432 WIRE -272 -416 -816 -416 WIRE -1008 -368 -1008 -384 WIRE -528 -368 -592 -368 WIRE -432 -368 -448 -368 WIRE -416 -368 -432 -368 WIRE -320 -368 -336 -368 WIRE 240 -368 240 -384 WIRE -432 -304 -432 -368 WIRE -432 -304 -720 -304 WIRE -1008 -288 -1008 -304 WIRE -1008 -288 -1312 -288 WIRE -592 -288 -592 -368 WIRE -592 -288 -1008 -288 WIRE -528 -288 -592 -288 WIRE -48 -288 -128 -288 WIRE -16 -288 -48 -288 WIRE 240 -288 240 -304 WIRE 240 -288 -16 -288 WIRE 480 -288 240 -288 WIRE -1104 -272 -1504 -272 WIRE -432 -272 -1104 -272 WIRE -192 -272 -432 -272 WIRE 144 -272 -192 -272 WIRE 656 -272 144 -272 WIRE -1104 -256 -1104 -272 WIRE -1008 -256 -1008 -288 WIRE -816 -256 -816 -416 WIRE -720 -256 -720 -304 WIRE 144 -256 144 -272 WIRE 240 -256 240 -288 WIRE 480 -256 480 -288 WIRE -1184 -192 -1184 -432 WIRE -1168 -192 -1184 -192 WIRE -640 -192 -640 -432 WIRE -640 -192 -656 -192 WIRE 64 -192 -640 -192 WIRE 480 -192 416 -192 WIRE -16 -176 -16 -288 WIRE 480 -176 480 -192 WIRE 656 -176 656 -272 WIRE -1312 -96 -1312 -288 WIRE -1200 -96 -1200 -448 WIRE -1168 -96 -1200 -96 WIRE -624 -96 -624 -448 WIRE -624 -96 -656 -96 WIRE -336 -96 -624 -96 WIRE -16 -96 -336 -96 WIRE 64 -96 -16 -96 WIRE 608 -96 416 -96 WIRE -48 -80 -48 -288 WIRE -592 -64 -592 -288 WIRE -192 -48 -192 -272 WIRE -1312 0 -1312 -32 WIRE -1168 0 -1312 0 WIRE -592 0 -656 0 WIRE 64 0 48 0 WIRE 480 0 480 -112 WIRE 480 0 416 0 WIRE 656 0 656 -80 WIRE 656 0 480 0 WIRE 848 0 656 0 WIRE 880 0 848 0 WIRE 992 0 960 0 WIRE 1040 0 992 0 WIRE 1152 0 1040 0 WIRE 1264 0 1152 0 WIRE -1504 16 -1504 -272 WIRE -1312 16 -1312 0 WIRE -592 16 -592 0 WIRE -432 16 -432 -272 WIRE 656 16 656 0 WIRE -48 32 -48 0 WIRE 48 32 -48 32 WIRE 1040 32 1040 0 WIRE 1152 32 1152 0 WIRE 1264 32 1264 0 WIRE -192 48 -192 32 WIRE -128 48 -128 -288 WIRE -48 48 -48 32 WIRE -1168 96 -1456 96 WIRE -480 96 -656 96 WIRE 48 96 48 32 WIRE 64 96 48 96 WIRE 608 96 416 96 WIRE 656 128 656 112 WIRE 1040 128 1040 96 WIRE 1152 128 1152 96 WIRE 1264 128 1264 112 WIRE -272 144 -272 -416 WIRE -128 144 -128 128 WIRE -128 144 -272 144 WIRE -48 144 -48 128 WIRE -1632 192 -1648 192 WIRE -1536 192 -1552 192 WIRE -1504 192 -1504 112 WIRE -1504 192 -1536 192 WIRE -1312 192 -1312 80 WIRE -1312 192 -1504 192 WIRE -1168 192 -1312 192 WIRE -592 192 -592 80 WIRE -592 192 -656 192 WIRE -432 192 -432 112 WIRE -432 192 -592 192 WIRE -304 192 -432 192 WIRE -272 192 -304 192 WIRE -160 192 -192 192 WIRE -32 192 -48 192 WIRE 64 192 48 192 WIRE 448 192 416 192 WIRE 608 192 448 192 WIRE 848 192 848 0 WIRE 848 192 688 192 WIRE -1504 208 -1504 192 WIRE -432 208 -432 192 WIRE 448 208 448 192 WIRE -1168 288 -1456 288 WIRE -480 288 -656 288 WIRE -48 288 -64 288 WIRE 32 288 16 288 WIRE 64 288 32 288 WIRE 448 288 448 272 WIRE 448 288 416 288 WIRE 992 288 992 0 WIRE 992 288 448 288 WIRE 448 304 448 288 WIRE -1504 320 -1504 304 WIRE -432 320 -432 304 WIRE -1536 384 -1536 192 WIRE -1376 384 -1536 384 WIRE -1200 384 -1296 384 WIRE -1168 384 -1200 384 WIRE -624 384 -656 384 WIRE -464 384 -624 384 WIRE -304 384 -304 192 WIRE -304 384 -384 384 WIRE -48 384 -64 384 WIRE 48 384 16 384 WIRE 64 384 48 384 WIRE 448 384 448 368 WIRE 448 384 416 384 WIRE 608 384 448 384 WIRE 848 384 848 192 WIRE 848 384 688 384 WIRE -1200 400 -1200 384 WIRE -624 400 -624 384 WIRE -1648 480 -1648 192 WIRE -1200 480 -1200 464 WIRE -1200 480 -1648 480 WIRE -1168 480 -1200 480 WIRE -624 480 -624 464 WIRE -624 480 -656 480 WIRE -160 480 -160 192 WIRE -160 480 -624 480 WIRE 992 480 992 288 WIRE 992 480 416 480 WIRE 32 496 32 288 WIRE 32 496 -368 496 WIRE 48 512 48 384 WIRE 48 512 -496 512 WIRE -128 528 -128 144 WIRE -1168 576 -1200 576 WIRE -496 576 -496 512 WIRE -496 576 -656 576 WIRE 64 576 -64 576 WIRE 432 576 416 576 WIRE -128 656 -128 624 WIRE -1168 672 -1184 672 WIRE -640 672 -656 672 WIRE -528 672 -528 -288 WIRE -528 672 -560 672 WIRE 64 672 48 672 WIRE 464 672 416 672 WIRE 464 688 464 672 WIRE -368 720 -368 496 WIRE -960 752 -960 736 WIRE -864 752 -864 736 WIRE -768 752 -768 736 WIRE -528 752 -528 672 WIRE -528 752 -768 752 WIRE 176 752 176 736 WIRE -1184 768 -1184 672 WIRE -640 768 -640 672 WIRE -640 768 -1184 768 WIRE -448 768 -640 768 WIRE -336 768 -336 -96 WIRE -336 768 -352 768 WIRE -1200 784 -1200 576 WIRE -496 784 -496 576 WIRE -496 784 -1200 784 WIRE 304 784 304 736 WIRE 464 784 464 768 WIRE 464 784 304 784 WIRE -1056 800 -1056 736 WIRE 464 800 464 784 WIRE -1056 896 -1056 880 WIRE 464 896 464 880 WIRE -1648 928 -1648 480 WIRE -160 928 -160 480 WIRE -160 928 -1648 928 WIRE 992 928 992 480 WIRE 992 928 -160 928 FLAG 176 752 0 FLAG 240 -384 0 FLAG -192 48 0 FLAG -48 192 0 FLAG -64 384 0 FLAG -64 288 0 FLAG 48 672 0 FLAG 656 128 0 FLAG 1040 128 0 FLAG 464 896 0 FLAG 1264 128 0 FLAG 1264 0 OUT FLAG -192 -272 IN FLAG 48 0 0 FLAG 432 576 0 FLAG 1152 128 0 FLAG -960 752 0 FLAG -1008 -384 0 FLAG -432 320 0 FLAG -1504 320 0 FLAG -1056 896 0 FLAG -864 752 0 FLAG -48 144 0 FLAG -320 -368 0 FLAG -128 656 0 SYMBOL PowerProducts\\LTC3866 240 240 R0 SYMATTR InstName U1 SYMBOL voltage -192 -64 R0 SYMATTR InstName V1 SYMATTR Value 12 SYMBOL cap 224 -368 R0 SYMATTR InstName C1 SYMATTR Value 4.7µ SYMBOL res 64 176 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R1 SYMATTR Value 100K SYMBOL cap 16 368 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 WINDOW 39 50 87 VTop 2 SYMATTR InstName C2 SYMATTR Value 1500p SYMATTR SpiceLine Rser=10K Cpar=220p SYMBOL cap 16 272 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C3 SYMATTR Value .002µ SYMBOL schottky 464 -256 R0 SYMATTR InstName D1 SYMATTR Value CMDSH2-3 SYMATTR Description Diode SYMATTR Type diode SYMBOL cap 464 -176 R0 SYMATTR InstName C4 SYMATTR Value .1µ SYMBOL nmos 608 -176 R0 SYMATTR InstName M1 SYMATTR Value BSC050NE2LS SYMBOL nmos 608 16 R0 SYMATTR InstName M2 SYMATTR Value BSC010NE2LS SYMBOL ind 864 16 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 SYMATTR InstName L1 SYMATTR Value .33µ SYMATTR SpiceLine Rser=.32m SYMBOL cap 1024 32 R0 WINDOW 123 22 56 Left 2 WINDOW 3 33 33 Left 2 SYMATTR Value2 x6 SYMATTR Value 100µ SYMATTR InstName C5 SYMATTR SpiceLine V=6.3 Irms=0 Rser=0.002 Lser=0 mfg="TDK" pn="C575OX5ROJI07M" type="X5R" SYMBOL res 704 176 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R2 SYMATTR Value 4.64K SYMBOL res 704 368 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R3 SYMATTR Value 931 SYMBOL cap 432 208 R0 SYMATTR InstName C6 SYMATTR Value 220n SYMBOL cap 432 304 R0 SYMATTR InstName C7 SYMATTR Value 220n SYMBOL res 448 672 R0 SYMATTR InstName R4 SYMATTR Value 30.1K SYMBOL res 448 784 R0 SYMATTR InstName R5 SYMATTR Value 20K SYMBOL res 1248 16 R0 SYMATTR InstName Rload SYMATTR Value 16.7m SYMBOL polcap 1136 32 R0 WINDOW 3 37 34 Left 2 WINDOW 123 26 59 Left 2 SYMATTR Value 330µ SYMATTR Value2 x6 SYMATTR InstName C8 SYMATTR Description Capacitor SYMATTR Type cap SYMATTR SpiceLine V=6.3 Irms=2.2 Rser=0.025 Lser=0 mfg="KEMET" pn="T520V337M006ASE025" type="Tantalum" SYMBOL cap -1024 -368 R0 SYMATTR InstName C9 SYMATTR Value 4.7µ SYMBOL res -32 -192 R0 SYMATTR InstName R6 SYMATTR Value 120K SYMBOL schottky -608 -64 R0 SYMATTR InstName D2 SYMATTR Value CMDSH2-3 SYMATTR Description Diode SYMATTR Type diode SYMBOL cap -608 16 R0 SYMATTR InstName C10 SYMATTR Value .1µ SYMBOL nmos -480 16 R0 SYMATTR InstName M3 SYMATTR Value BSC050NE2LS SYMBOL nmos -480 208 R0 SYMATTR InstName M4 SYMATTR Value BSC010NE2LS SYMBOL ind -288 208 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 SYMATTR InstName L2 SYMATTR Value .33µ SYMATTR SpiceLine Rser=.32m SYMBOL res -368 368 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R8 SYMATTR Value 931 SYMBOL cap -640 400 R0 SYMATTR InstName C12 SYMATTR Value 220n SYMBOL schottky -1328 -96 R0 SYMATTR InstName D3 SYMATTR Value CMDSH2-3 SYMATTR Description Diode SYMATTR Type diode SYMBOL cap -1328 16 R0 SYMATTR InstName C11 SYMATTR Value .1µ SYMBOL nmos -1456 16 M0 WINDOW 0 34 -8 Right 2 WINDOW 3 32 104 Right 2 SYMATTR InstName M5 SYMATTR Value BSC050NE2LS SYMBOL nmos -1456 208 M0 WINDOW 0 -1 30 Right 2 WINDOW 3 34 97 Right 2 SYMATTR InstName M6 SYMATTR Value BSC010NE2LS SYMBOL ind -1536 208 M270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 SYMATTR InstName L3 SYMATTR Value .33µ SYMATTR SpiceLine Rser=.32m SYMBOL res -1392 368 M90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R7 SYMATTR Value 931 SYMBOL cap -1184 400 M0 SYMATTR InstName C13 SYMATTR Value 220n SYMBOL res -1072 784 R0 SYMATTR InstName R9 SYMATTR Value 75K SYMBOL res -544 656 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R10 SYMATTR Value 120K SYMBOL nmos -448 720 M90 WINDOW 0 -9 60 VLeft 2 WINDOW 3 57 45 VTop 2 SYMATTR InstName M7 SYMATTR Value 2N7002 SYMBOL res -64 -96 R0 SYMATTR InstName R11 SYMATTR Value 30.1K SYMBOL res -64 32 R0 SYMATTR InstName R12 SYMATTR Value 10K SYMBOL res -544 -384 M90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R13 SYMATTR Value 20K SYMBOL res -432 -384 M90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R14 SYMATTR Value 10K SYMBOL res -144 32 R0 SYMATTR InstName R15 SYMATTR Value 1K SYMBOL PowerProducts\\LTC3874 -912 240 R0 SYMATTR InstName U2 SYMBOL npn -64 528 M0 WINDOW 0 35 10 Right 2 WINDOW 3 33 97 Right 2 SYMATTR InstName Q1 SYMATTR Value 2N3904 TEXT 736 960 Left 2 !.tran 1.5m startup