Version 4 SHEET 1 2480 1604 WIRE 1296 1072 1264 1072 WIRE 1520 1072 1376 1072 WIRE 1872 1072 1776 1072 WIRE 2064 1072 1872 1072 WIRE 2064 1088 2064 1072 WIRE 1872 1120 1872 1072 WIRE 1520 1136 1504 1136 WIRE 1824 1136 1776 1136 WIRE 2064 1184 2064 1168 WIRE 1520 1200 1504 1200 WIRE 1792 1200 1776 1200 WIRE 1872 1248 1872 1216 WIRE 1920 1248 1872 1248 WIRE 2064 1248 2000 1248 WIRE 2160 1248 2064 1248 WIRE 1520 1264 1504 1264 WIRE 1792 1264 1776 1264 WIRE 1872 1264 1872 1248 WIRE 2064 1264 2064 1248 WIRE 2160 1264 2160 1248 WIRE 1872 1360 1872 1328 WIRE 2064 1360 2064 1328 WIRE 2160 1360 2160 1344 FLAG 2064 1184 0 FLAG 1504 1264 0 FLAG 1872 1360 0 FLAG 2064 1360 0 FLAG 2160 1360 0 FLAG 1504 1200 0 FLAG 1264 1072 0 SYMBOL ind 1904 1264 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 SYMATTR InstName L1 SYMATTR Value 22µ SYMBOL schottky 1856 1328 M180 WINDOW 0 24 64 Left 2 WINDOW 3 24 0 Left 2 SYMATTR InstName D1 SYMATTR Value 1N5819 SYMBOL cap 2048 1264 R0 SYMATTR InstName C1 SYMATTR Value 47µ SYMBOL res 2144 1248 R0 SYMATTR InstName R1 SYMATTR Value 10 SYMBOL voltage 2064 1072 R0 SYMATTR InstName V1 SYMATTR Value 5 SYMBOL PowerProducts\\LTC1693-5 1648 1168 R0 SYMATTR InstName U1 SYMBOL pmos 1824 1216 M180 WINDOW 0 60 66 Left 2 WINDOW 3 58 36 Left 2 SYMATTR InstName Q1 SYMATTR Value Si4401DY SYMBOL voltage 1392 1072 R90 WINDOW 0 -32 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName V2 SYMATTR Value pulse(0 3.3 0 10n 10n 1u 2u) TEXT 1920 1416 Left 2 !.tran 2m startup