Version 4
SHEET 1 2552 756
WIRE 992 -400 800 -400
WIRE 1808 -400 992 -400
WIRE 1888 -400 1808 -400
WIRE 800 -384 800 -400
WIRE 1312 -384 1152 -384
WIRE 1440 -384 1312 -384
WIRE 1536 -384 1440 -384
WIRE 1648 -384 1536 -384
WIRE 1440 -368 1440 -384
WIRE 1536 -368 1536 -384
WIRE 1648 -368 1648 -384
WIRE 1888 -336 1888 -400
WIRE 992 -320 992 -400
WIRE 1152 -320 1152 -384
WIRE 1312 -320 1312 -384
WIRE 800 -288 800 -304
WIRE 1440 -288 1440 -304
WIRE 896 -256 880 -256
WIRE 1840 -256 1408 -256
WIRE 512 -192 480 -192
WIRE 896 -192 592 -192
WIRE 1536 -192 1536 -304
WIRE 1536 -192 1408 -192
WIRE 1888 -192 1888 -240
WIRE 1888 -192 1728 -192
WIRE 1968 -192 1888 -192
WIRE 2064 -192 1968 -192
WIRE 2160 -192 2144 -192
WIRE 2176 -192 2160 -192
WIRE 2272 -192 2256 -192
WIRE 2336 -192 2272 -192
WIRE 2384 -192 2336 -192
WIRE 1968 -176 1968 -192
WIRE 2384 -176 2384 -192
WIRE 1888 -144 1888 -192
WIRE 688 -128 672 -128
WIRE 816 -128 768 -128
WIRE 896 -128 880 -128
WIRE 1536 -128 1408 -128
WIRE 1728 -128 1728 -192
WIRE 1728 -128 1536 -128
WIRE 1968 -96 1968 -112
WIRE 2384 -80 2384 -96
WIRE 752 -64 672 -64
WIRE 896 -64 816 -64
WIRE 1840 -64 1408 -64
WIRE 1888 -32 1888 -48
WIRE 688 0 672 0
WIRE 800 0 768 0
WIRE 896 0 864 0
WIRE 2160 0 2160 -192
WIRE 2160 0 1408 0
WIRE 896 64 880 64
WIRE 2272 64 2272 -192
WIRE 2272 64 1408 64
WIRE 1808 112 1808 -400
WIRE 896 128 880 128
WIRE 880 192 880 128
WIRE 896 192 880 192
WIRE 1760 192 1408 192
WIRE 896 256 880 256
WIRE 1648 256 1648 -304
WIRE 1648 256 1408 256
WIRE 1808 256 1808 208
WIRE 1808 256 1744 256
WIRE 1888 256 1808 256
WIRE 2000 256 1888 256
WIRE 2096 256 2080 256
WIRE 2112 256 2096 256
WIRE 2208 256 2192 256
WIRE 2336 256 2336 -192
WIRE 2336 256 2208 256
WIRE 1888 272 1888 256
WIRE 2336 288 2336 256
WIRE 2336 288 2272 288
WIRE 1808 304 1808 256
WIRE 2336 304 2336 288
WIRE 880 320 880 256
WIRE 896 320 880 320
WIRE 1648 320 1408 320
WIRE 1744 320 1744 256
WIRE 1744 320 1648 320
WIRE 1888 352 1888 336
WIRE 896 384 880 384
WIRE 1760 384 1408 384
WIRE 2336 384 2336 368
WIRE 2336 384 2304 384
WIRE 1808 416 1808 400
WIRE 2336 416 2336 384
WIRE 896 448 880 448
WIRE 2096 448 2096 256
WIRE 2096 448 1408 448
WIRE 896 512 880 512
WIRE 2208 512 2208 256
WIRE 2208 512 1408 512
WIRE 896 576 880 576
WIRE 2272 576 2272 288
WIRE 2272 576 1408 576
WIRE 896 640 880 640
WIRE 2304 640 2304 384
WIRE 2304 640 1408 640
WIRE 1040 720 1040 704
WIRE 1264 720 1264 704
FLAG 1888 -32 0
FLAG 1968 -96 0
FLAG 1808 416 0
FLAG 1888 352 0
FLAG 1264 720 0
FLAG 1040 720 0
FLAG 2336 416 0
FLAG 672 0 0
FLAG 672 -64 0
FLAG 800 -288 0
FLAG 2384 -80 0
FLAG 480 -192 0
FLAG 672 -128 0
FLAG 1440 -288 0
FLAG 880 64 0
FLAG 2384 -192 OUT
FLAG 800 -400 IN
SYMBOL NMOS 1840 -336 R0
SYMATTR InstName Q1
SYMATTR Value FDS6680A
SYMBOL polcap 1520 -192 R0
WINDOW 0 34 14 Left 2
WINDOW 3 33 46 Left 2
SYMATTR InstName C1
SYMATTR Value .47µ
SYMBOL nmos 1840 -144 R0
WINDOW 0 56 4 Left 2
WINDOW 3 60 88 Left 2
SYMATTR InstName Q2
SYMATTR Value FDS6680A
SYMBOL schottky 1520 -368 R0
SYMATTR InstName D1
SYMATTR Value 1N5818
SYMBOL ind 2048 -176 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L1
SYMATTR Value 1µ
SYMBOL RES 2160 -208 M90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 2m
SYMBOL schottky 1952 -112 M180
WINDOW 0 35 58 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D2
SYMATTR Value 1N5818
SYMBOL nmos 1760 112 R0
SYMATTR InstName Q3
SYMATTR Value FDS6680A
SYMBOL polcap 1632 256 R0
WINDOW 0 38 13 Left 2
WINDOW 3 35 49 Left 2
SYMATTR InstName C2
SYMATTR Value .47µ
SYMBOL nmos 1760 304 R0
WINDOW 0 56 4 Left 2
WINDOW 3 60 88 Left 2
SYMATTR InstName Q4
SYMATTR Value FDS6680A
SYMBOL ind 1984 272 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L2
SYMATTR Value 1µ
SYMBOL schottky 1872 336 M180
WINDOW 0 36 65 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D3
SYMATTR Value 1N5818
SYMBOL polcap 2320 304 R0
WINDOW 123 31 86 Left 2
SYMATTR Value2 x2
SYMATTR SpiceLine Rser=10m
SYMATTR InstName C3
SYMATTR Value 1000µ
SYMBOL cap 864 -16 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C4
SYMATTR Value .01µ
SYMBOL res 784 -16 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 2K
SYMBOL cap 816 -80 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C5
SYMATTR Value 250p
SYMBOL schottky 1632 -368 R0
SYMATTR InstName D4
SYMATTR Value 1N5818
SYMBOL VOLTAGE 800 -400 R0
SYMATTR InstName V1
SYMATTR Value 6
SYMBOL RES 2096 240 M90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 2m
SYMBOL res 784 -144 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R4
SYMATTR Value 10K
SYMBOL cap 880 -144 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C6
SYMATTR Value .01µ
SYMBOL polcap 1424 -368 R0
SYMATTR InstName C7
SYMATTR Value 1µ
SYMBOL voltage 608 -192 R90
WINDOW 123 32 56 VTop 2
WINDOW 39 32 56 VTop 2
WINDOW 3 32 56 VTop 2
WINDOW 0 -32 56 VBottom 2
SYMATTR Value SINE(.5 .5 200K)
SYMATTR InstName V2
SYMBOL PowerProducts\\LTC1709-9 1152 192 R0
SYMATTR InstName U1
SYMBOL res 2368 -192 R0
SYMATTR InstName Rload
SYMATTR Value .5
TEXT 1544 696 Left 2 !.tran 750u startup