Version 4 SHEET 1 2872 1908 WIRE 1744 1040 1360 1040 WIRE 2160 1040 1744 1040 WIRE 1360 1056 1360 1040 WIRE 1744 1056 1744 1040 WIRE 1504 1120 1472 1120 WIRE 2160 1120 2160 1040 WIRE 2160 1120 1984 1120 WIRE 1360 1152 1360 1136 WIRE 2160 1168 2160 1120 WIRE 1424 1248 1408 1248 WIRE 1504 1248 1488 1248 WIRE 2112 1248 1984 1248 WIRE 1504 1376 1488 1376 WIRE 2032 1376 1984 1376 WIRE 2160 1376 2160 1264 WIRE 2160 1376 2032 1376 WIRE 2256 1376 2160 1376 WIRE 2416 1376 2336 1376 WIRE 2480 1376 2416 1376 WIRE 2576 1376 2480 1376 WIRE 2480 1392 2480 1376 WIRE 2576 1392 2576 1376 WIRE 2032 1408 2032 1376 WIRE 2480 1488 2480 1456 WIRE 2576 1488 2576 1472 WIRE 1328 1504 1312 1504 WIRE 1408 1504 1392 1504 WIRE 1504 1504 1488 1504 WIRE 2032 1504 2032 1472 WIRE 2032 1504 1984 1504 WIRE 2032 1536 2032 1504 WIRE 1504 1632 1488 1632 WIRE 2032 1632 2032 1600 WIRE 2032 1632 1984 1632 WIRE 2032 1648 2032 1632 WIRE 2160 1648 2160 1376 WIRE 2304 1648 2160 1648 WIRE 2160 1680 2160 1648 WIRE 2304 1696 2304 1648 WIRE 2032 1728 2032 1712 WIRE 1504 1760 1456 1760 WIRE 2112 1760 1984 1760 WIRE 2160 1792 2160 1776 WIRE 2304 1792 2304 1760 WIRE 1632 1840 1632 1824 WIRE 1856 1840 1856 1824 WIRE 1456 1872 1456 1760 WIRE 2416 1872 2416 1376 WIRE 2416 1872 1456 1872 FLAG 1632 1840 0 FLAG 1856 1840 0 FLAG 2160 1792 0 FLAG 2304 1792 0 FLAG 2480 1488 0 FLAG 1488 1632 0 FLAG 1312 1504 0 FLAG 1408 1248 0 FLAG 1360 1152 0 FLAG 2032 1728 0 FLAG 2576 1488 0 FLAG 2576 1376 OUT FLAG 1360 1040 IN SYMBOL NMOS 2112 1168 R0 SYMATTR InstName Q1 SYMATTR Value Si4410DY SYMBOL nmos 2112 1680 R0 SYMATTR InstName Q2 SYMATTR Value Si4410DY SYMBOL schottky 2016 1600 M180 WINDOW 0 24 72 Left 2 WINDOW 3 24 0 Left 2 SYMATTR InstName D1 SYMATTR Value 1N5818 SYMBOL ind 2240 1392 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 SYMATTR InstName L1 SYMATTR Value 6µ SYMBOL schottky 2288 1760 M180 WINDOW 0 24 72 Left 2 WINDOW 3 24 0 Left 2 SYMATTR InstName D2 SYMATTR Value 1N5818 SYMBOL polcap 2464 1392 R0 SYMATTR InstName C1 SYMATTR Value 500µ SYMATTR SpiceLine Rser=.05 SYMBOL RES 1504 1488 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R1 SYMATTR Value 10K SYMBOL cap 1392 1488 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C2 SYMATTR Value 2200p SYMBOL cap 1488 1232 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C3 SYMATTR Value .01µ SYMBOL VOLTAGE 1360 1040 R0 SYMATTR InstName V1 SYMATTR Value 6 SYMBOL cap 2016 1408 R0 SYMATTR InstName C4 SYMATTR Value .22µ SYMBOL polcap 2016 1648 R0 SYMATTR InstName C5 SYMATTR Value 4.7µ SYMBOL res 2560 1376 R0 SYMATTR InstName Rload SYMATTR Value 2 SYMBOL POWERPRODUCTS\\LTC1625 1744 1440 R0 SYMATTR InstName U1 TEXT 2440 1568 Left 2 !.tran 8m startup