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 960 736 944 736
WIRE 1056 736 1040 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 1952 832 1840 832
WIRE 2048 832 1952 832
WIRE 1600 848 1600 832
WIRE 1840 848 1840 832
WIRE 1952 848 1952 832
WIRE 2048 848 2048 832
WIRE 1312 928 1312 896
WIRE 1600 928 1600 912
WIRE 1952 944 1952 912
WIRE 2048 944 2048 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 2048 832 OUT
FLAG 1760 656 0
FLAG 1952 944 0
FLAG 2048 944 0
FLAG 1840 1072 0
FLAG 944 736 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 1936 848 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 1056 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 2032 832 R0
SYMATTR InstName Rload
SYMATTR Value 2
SYMBOL POWERPRODUCTS\\LTC1772 1312 736 R0
SYMATTR InstName U1
SYMBOL schottky 1584 912 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
TEXT 1496 1016 Left 2 !.tran 250u startup