Version 4
SHEET 1 3284 2464
WIRE -544 464 -656 464
WIRE -240 464 -544 464
WIRE 16 464 -240 464
WIRE 144 464 16 464
WIRE 256 464 144 464
WIRE 400 464 256 464
WIRE 480 464 400 464
WIRE 576 464 480 464
WIRE -656 480 -656 464
WIRE -544 480 -544 464
WIRE 16 480 16 464
WIRE 144 480 144 464
WIRE 256 480 256 464
WIRE 576 496 576 464
WIRE -240 544 -240 464
WIRE -656 576 -656 560
WIRE -544 576 -544 560
WIRE -464 576 -544 576
WIRE 528 576 -16 576
WIRE 256 672 256 544
WIRE 256 672 -16 672
WIRE 288 672 256 672
WIRE 576 672 576 592
WIRE 576 672 352 672
WIRE -464 768 -496 768
WIRE 576 768 576 672
WIRE 576 768 -16 768
WIRE 704 768 576 768
WIRE 752 768 704 768
WIRE 864 768 832 768
WIRE 880 768 864 768
WIRE 976 768 960 768
WIRE 576 784 576 768
WIRE 704 816 704 768
WIRE -464 864 -496 864
WIRE 528 864 -16 864
WIRE 576 896 576 880
WIRE 704 896 704 880
WIRE 48 960 -16 960
WIRE 864 960 864 768
WIRE 864 960 48 960
WIRE 48 976 48 960
WIRE 48 1056 48 1040
WIRE 48 1056 -16 1056
WIRE 976 1056 976 768
WIRE 976 1056 48 1056
WIRE 480 1072 480 464
WIRE 432 1152 -16 1152
WIRE 144 1248 144 544
WIRE 144 1248 -16 1248
WIRE 240 1248 144 1248
WIRE 480 1248 480 1168
WIRE 480 1248 304 1248
WIRE 480 1344 480 1248
WIRE 480 1344 -16 1344
WIRE 624 1344 480 1344
WIRE 752 1344 624 1344
WIRE 864 1344 832 1344
WIRE 880 1344 864 1344
WIRE 976 1344 976 1056
WIRE 976 1344 960 1344
WIRE 480 1360 480 1344
WIRE 624 1392 624 1344
WIRE 432 1440 -16 1440
WIRE 480 1472 480 1456
WIRE 624 1472 624 1456
WIRE -464 1536 -496 1536
WIRE 48 1536 -16 1536
WIRE 864 1536 864 1344
WIRE 864 1536 48 1536
WIRE 48 1552 48 1536
WIRE -640 1632 -656 1632
WIRE -560 1632 -576 1632
WIRE -464 1632 -480 1632
WIRE 48 1632 48 1616
WIRE 48 1632 -16 1632
WIRE 976 1632 976 1344
WIRE 976 1632 48 1632
WIRE 400 1648 400 464
WIRE -544 1728 -560 1728
WIRE -464 1728 -480 1728
WIRE 352 1728 -16 1728
WIRE -464 1824 -496 1824
WIRE 16 1824 16 544
WIRE 16 1824 -16 1824
WIRE 160 1824 16 1824
WIRE 400 1824 400 1744
WIRE 400 1824 224 1824
WIRE -544 1920 -672 1920
WIRE -464 1920 -544 1920
WIRE 400 1920 400 1824
WIRE 400 1920 -16 1920
WIRE 592 1920 400 1920
WIRE 752 1920 592 1920
WIRE 864 1920 832 1920
WIRE 880 1920 864 1920
WIRE 976 1920 976 1632
WIRE 976 1920 960 1920
WIRE -544 1936 -544 1920
WIRE 400 1936 400 1920
WIRE 592 1968 592 1920
WIRE -768 2016 -800 2016
WIRE -672 2016 -672 1920
WIRE -672 2016 -688 2016
WIRE -656 2016 -672 2016
WIRE -544 2016 -544 2000
WIRE -544 2016 -576 2016
WIRE -464 2016 -544 2016
WIRE 352 2016 -16 2016
WIRE 400 2048 400 2032
WIRE 592 2048 592 2032
WIRE -464 2112 -544 2112
WIRE 48 2112 -16 2112
WIRE 864 2112 864 1920
WIRE 864 2112 48 2112
WIRE 48 2128 48 2112
WIRE -464 2208 -496 2208
WIRE 48 2208 48 2192
WIRE 48 2208 -16 2208
WIRE 976 2208 976 1920
WIRE 976 2208 48 2208
WIRE -240 2256 -240 2240
WIRE -496 2304 -496 2208
WIRE 976 2304 976 2208
WIRE 976 2304 -496 2304
WIRE 1104 2304 976 2304
WIRE 976 2320 976 2304
WIRE 1104 2320 1104 2304
WIRE -544 2400 -544 2112
WIRE 976 2400 976 2384
WIRE 976 2400 -544 2400
WIRE 976 2416 976 2400
WIRE 1104 2416 1104 2400
FLAG -240 2256 0
FLAG -656 576 0
FLAG 576 896 0
FLAG 704 896 0
FLAG 480 1472 0
FLAG 624 1472 0
FLAG 400 2048 0
FLAG 592 2048 0
FLAG 976 2416 0
FLAG 1104 2416 0
FLAG -800 2016 0
FLAG 1104 2304 OUT
FLAG -496 1824 0
FLAG -560 1728 0
FLAG -656 1632 0
FLAG -656 464 IN
SYMBOL VOLTAGE -656 464 R0
SYMATTR InstName V1
SYMATTR Value 6
SYMBOL NMOS 528 496 R0
SYMATTR InstName Q1
SYMATTR Value Si4866DY
SYMBOL nmos 528 784 R0
SYMATTR InstName Q2
SYMATTR Value Si4866DY
SYMBOL cap 288 656 M90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value .1µ
SYMBOL schottky 240 480 R0
SYMATTR InstName D1
SYMATTR Value 1N5817
SYMBOL schottky 688 880 M180
WINDOW 0 24 72 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D2
SYMATTR Value 1N5817
SYMBOL RES 864 752 M90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value .003
SYMBOL cap 32 976 R0
SYMATTR InstName C2
SYMATTR Value 1000p
SYMBOL ind 736 784 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L1
SYMATTR Value 1µ
SYMBOL RES -560 464 R0
SYMATTR InstName R2
SYMATTR Value 10K
SYMBOL nmos 432 1072 R0
SYMATTR InstName Q3
SYMATTR Value Si4866DY
SYMBOL nmos 432 1360 R0
SYMATTR InstName Q4
SYMATTR Value Si4866DY
SYMBOL cap 240 1232 M90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C3
SYMATTR Value .1µ
SYMBOL schottky 128 480 R0
SYMATTR InstName D3
SYMATTR Value 1N5817
SYMBOL schottky 608 1456 M180
WINDOW 0 24 72 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D4
SYMATTR Value 1N5817
SYMBOL res 864 1328 M90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value .003
SYMBOL cap 32 1552 R0
SYMATTR InstName C4
SYMATTR Value 1000p
SYMBOL ind 736 1360 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L2
SYMATTR Value 1µ
SYMBOL nmos 352 1648 R0
SYMATTR InstName Q5
SYMATTR Value Si4866DY
SYMBOL nmos 352 1936 R0
SYMATTR InstName Q6
SYMATTR Value Si4866DY
SYMBOL cap 160 1808 M90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C5
SYMATTR Value .1µ
SYMBOL schottky 576 2032 M180
WINDOW 0 24 72 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D5
SYMATTR Value 1N5817
SYMBOL res 864 1904 M90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R4
SYMATTR Value .003
SYMBOL ind 736 1936 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L3
SYMATTR Value 1µ
SYMBOL schottky 0 480 R0
SYMATTR InstName D6
SYMATTR Value 1N5817
SYMBOL cap 32 2128 R0
SYMATTR InstName C6
SYMATTR Value 1000p
SYMBOL polcap 960 2320 R0
WINDOW 3 30 59 Left 2
SYMATTR Value 480µ
SYMATTR InstName C7
SYMATTR SpiceLine Rser=.01
SYMBOL cap -560 1936 R0
SYMATTR InstName C8
SYMATTR Value 100p
SYMBOL cap -480 1712 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C9
SYMATTR Value 100p
SYMBOL cap -576 1616 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C10
SYMATTR Value 680p
SYMBOL res -464 1616 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R5
SYMATTR Value 5K
SYMBOL res -672 2032 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R6
SYMATTR Value 7.5K
SYMBOL res -784 2032 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R7
SYMATTR Value 6.04K
SYMBOL PowerProducts\\LTC3731H -240 1392 R0
SYMATTR InstName U1
SYMBOL res 1088 2304 R0
SYMATTR InstName Rload
SYMATTR Value .1
TEXT 576 2368 Left 2 !.tran 300u startup