Version 4
SHEET 1 2248 1200
WIRE 1600 544 1312 544
WIRE 1760 544 1600 544
WIRE 1600 560 1600 544
WIRE 1760 560 1760 544
WIRE 1312 576 1312 544
WIRE 1600 656 1600 640
WIRE 1600 656 1488 656
WIRE 1760 656 1760 640
WIRE 1600 720 1600 656
WIRE 944 736 928 736
WIRE 1056 736 1024 736
WIRE 1136 736 1120 736
WIRE 1552 736 1488 736
WIRE 1520 816 1488 816
WIRE 1600 832 1600 816
WIRE 1680 832 1600 832
WIRE 1840 832 1760 832
WIRE 1968 832 1840 832
WIRE 2080 832 1968 832
WIRE 1840 848 1840 832
WIRE 2080 848 2080 832
WIRE 1600 864 1600 832
WIRE 1968 864 1968 832
WIRE 1312 928 1312 896
WIRE 1600 928 1600 912
WIRE 1968 944 1968 928
WIRE 2080 944 2080 928
WIRE 1520 960 1520 816
WIRE 1840 960 1840 928
WIRE 1840 960 1520 960
WIRE 1840 976 1840 960
WIRE 1840 1072 1840 1056
FLAG 2080 832 OUT
FLAG 1760 656 0
FLAG 1968 944 0
FLAG 2080 944 0
FLAG 1840 1072 0
FLAG 928 736 0
FLAG 1600 928 0
FLAG 1312 928 0
FLAG 1760 544 IN
SYMBOL ind 1664 848 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L1
SYMATTR Value 4.7µ
SYMBOL VOLTAGE 1760 544 R0
SYMATTR InstName V1
SYMATTR Value 5
SYMBOL polcap 1952 864 R0
SYMATTR InstName C1
SYMATTR Value 47µ
SYMATTR SpiceLine Rser=.1
SYMBOL cap 1120 720 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C2
SYMATTR Value 220p
SYMBOL RES 1584 656 M180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R1
SYMATTR Value 0.03
SYMBOL res 1824 960 R0
SYMATTR InstName R2
SYMATTR Value 78.7K
SYMBOL res 1824 832 R0
SYMATTR InstName R3
SYMATTR Value 169K
SYMBOL res 1040 720 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R4
SYMATTR Value 10K
SYMBOL PMOS 1552 816 M180
WINDOW 0 56 80 Left 2
WINDOW 3 56 44 Left 2
SYMATTR InstName Q1
SYMATTR Value FDC638P
SYMBOL res 2064 832 R0
SYMATTR InstName Rload
SYMATTR Value 2
SYMBOL schottky 1584 928 M180
WINDOW 0 37 58 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D1
SYMATTR Value MBRS340
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL PowerProducts\\LTC1772B 1312 736 R0
SYMATTR InstName U1
TEXT 1968 1032 Left 2 !.tran 250u startup