Version 4 SHEET 1 2636 1752 WIRE 1632 1168 1232 1168 WIRE 1808 1168 1632 1168 WIRE 1856 1168 1808 1168 WIRE 1232 1184 1232 1168 WIRE 1632 1184 1632 1168 WIRE 1856 1200 1856 1168 WIRE 1376 1232 1360 1232 WIRE 1472 1232 1440 1232 WIRE 1808 1232 1808 1168 WIRE 1808 1232 1792 1232 WIRE 1232 1280 1232 1264 WIRE 1472 1328 1440 1328 WIRE 1856 1328 1856 1280 WIRE 1856 1328 1792 1328 WIRE 1936 1328 1856 1328 WIRE 2032 1328 2000 1328 WIRE 2144 1328 2032 1328 WIRE 2256 1328 2144 1328 WIRE 1856 1344 1856 1328 WIRE 2144 1344 2144 1328 WIRE 2256 1344 2256 1328 WIRE 2032 1376 2032 1328 WIRE 1216 1424 1168 1424 WIRE 1328 1424 1296 1424 WIRE 1472 1424 1328 1424 WIRE 1808 1424 1792 1424 WIRE 1168 1440 1168 1424 WIRE 1328 1440 1328 1424 WIRE 2144 1440 2144 1408 WIRE 2256 1440 2256 1424 WIRE 1856 1456 1856 1440 WIRE 1472 1520 1392 1520 WIRE 2032 1520 2032 1456 WIRE 2032 1520 1792 1520 WIRE 1168 1536 1168 1504 WIRE 1328 1536 1328 1504 WIRE 1392 1536 1392 1520 WIRE 2032 1536 2032 1520 WIRE 1632 1584 1632 1568 WIRE 1392 1632 1392 1616 WIRE 2032 1632 2032 1616 FLAG 1856 1456 0 FLAG 1392 1632 0 FLAG 2032 1632 0 FLAG 1632 1584 0 FLAG 2144 1440 0 FLAG 1328 1536 0 FLAG 1168 1536 0 FLAG 2256 1440 0 FLAG 1232 1280 0 FLAG 1440 1328 0 FLAG 1360 1232 0 FLAG 1232 1168 IN FLAG 2256 1328 OUT SYMBOL NMOS 1808 1344 R0 SYMATTR InstName Q1 SYMATTR Value FDS6699S SYMBOL RES 1376 1520 R0 SYMATTR InstName R1 SYMATTR Value 80.6K SYMBOL res 2016 1520 R0 SYMATTR InstName R2 SYMATTR Value 12.1K SYMBOL res 2016 1360 R0 SYMATTR InstName R3 SYMATTR Value 37.4K SYMBOL ind 1840 1184 R0 SYMATTR InstName L1 SYMATTR Value 1µ SYMBOL schottky 1936 1344 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName D1 SYMATTR Value MBR735 SYMBOL polcap 2128 1344 R0 WINDOW 40 30 59 Left 2 WINDOW 3 37 36 Left 2 SYMATTR SpiceLine2 x2 SYMATTR Value 150µ SYMATTR InstName C1 SYMBOL res 1312 1408 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R4 SYMATTR Value 22K SYMBOL cap 1152 1440 R0 SYMATTR InstName C2 SYMATTR Value 6800p SYMBOL cap 1312 1440 R0 SYMATTR InstName C3 SYMATTR Value 47p SYMBOL VOLTAGE 1232 1168 R0 SYMATTR InstName V1 SYMATTR Value 3.3 SYMBOL polcap 1440 1216 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C4 SYMATTR Value 4.7µ SYMBOL PowerProducts\\LTC1871-1 1632 1376 R0 SYMATTR InstName U1 SYMBOL res 2240 1328 R0 SYMATTR InstName Rload SYMATTR Value 1 TEXT 2040 1672 Left 2 !.tran 500u startup