Version 4 SHEET 1 2808 1472 WIRE 1824 880 1632 880 WIRE 1888 880 1824 880 WIRE 2016 880 1968 880 WIRE 2064 880 2016 880 WIRE 2176 880 2128 880 WIRE 2288 880 2176 880 WIRE 2400 880 2288 880 WIRE 1632 896 1632 880 WIRE 2288 896 2288 880 WIRE 2400 896 2400 880 WIRE 1824 944 1824 880 WIRE 2176 960 2176 880 WIRE 1632 992 1632 976 WIRE 2288 992 2288 960 WIRE 2400 992 2400 976 WIRE 2016 1024 2016 880 WIRE 2016 1024 1952 1024 WIRE 2176 1088 2176 1040 WIRE 2176 1088 1952 1088 WIRE 2176 1104 2176 1088 WIRE 1968 1152 1952 1152 WIRE 2064 1152 2048 1152 WIRE 2064 1168 2064 1152 WIRE 2176 1200 2176 1184 WIRE 1824 1248 1824 1232 WIRE 2064 1248 2064 1232 FLAG 2400 880 OUT FLAG 2176 1200 0 FLAG 2288 992 0 FLAG 2400 992 0 FLAG 2064 1248 0 FLAG 1824 1248 0 FLAG 1632 992 0 FLAG 1632 880 IN SYMBOL IND 1872 896 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 SYMATTR InstName L1 SYMATTR Value 150µ SYMATTR SpiceLine Rser=0.02 Rpar=5000 SYMBOL schottky 2064 896 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName D1 SYMATTR Value 1N5819 SYMBOL RES 2160 944 R0 SYMATTR InstName R1 SYMATTR Value 10.7K SYMBOL RES 2160 1088 R0 SYMATTR InstName R2 SYMATTR Value 1.24K SYMBOL RES 1952 1168 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 0 56 VBottom 2 SYMATTR InstName R3 SYMATTR Value 1K SYMBOL polcap 2272 896 R0 SYMATTR InstName C1 SYMATTR Value 500µ SYMBOL CAP 2048 1168 R0 SYMATTR InstName C3 SYMATTR Value 1µ SYMBOL VOLTAGE 1632 880 R0 SYMATTR InstName V1 SYMATTR Value 5 SYMBOL PowerProducts\\LT1072HV 1824 1088 R0 SYMATTR InstName U1 SYMBOL RES 2384 880 R0 SYMATTR InstName Rload SYMATTR Value 48 TEXT 2264 1280 Left 2 !.tran 25m startup