Version 4
SHEET 1 2388 1428
WIRE 1840 864 1760 864
WIRE 2016 864 1840 864
WIRE 1472 880 1424 880
WIRE 1600 880 1536 880
WIRE 1728 880 1680 880
WIRE 2016 880 2016 864
WIRE 1840 896 1840 864
WIRE 2016 976 2016 960
WIRE 1424 992 1424 880
WIRE 1536 992 1424 992
WIRE 1728 992 1728 880
WIRE 1728 992 1616 992
WIRE 1840 1024 1840 976
WIRE 1904 1024 1840 1024
WIRE 2032 1024 1968 1024
WIRE 2128 1024 2032 1024
WIRE 1840 1040 1840 1024
WIRE 2032 1040 2032 1024
WIRE 2128 1040 2128 1024
WIRE 1760 1056 1760 864
WIRE 1760 1056 1568 1056
WIRE 1568 1072 1568 1056
WIRE 1344 1120 1328 1120
WIRE 1424 1120 1424 992
WIRE 1424 1120 1408 1120
WIRE 1440 1120 1424 1120
WIRE 1728 1120 1728 992
WIRE 1728 1120 1696 1120
WIRE 1792 1120 1728 1120
WIRE 2032 1136 2032 1104
WIRE 2128 1136 2128 1120
WIRE 1840 1152 1840 1136
WIRE 1440 1216 1408 1216
WIRE 1568 1280 1568 1264
FLAG 2016 976 0
FLAG 1568 1280 0
FLAG 1328 1120 0
FLAG 1840 1152 0
FLAG 2032 1136 0
FLAG 2128 1136 0
FLAG 2128 1024 OUT
FLAG 2016 864 IN
FLAG 1408 1216 0
SYMBOL POWERPRODUCTS\\LTC1693-3 1568 1168 R0
SYMATTR InstName U1
SYMBOL RES 1632 976 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 13K
SYMBOL res 1696 864 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 7.5K
SYMBOL cap 1408 1104 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value 680p
SYMBOL zener 1472 896 R270
WINDOW 0 36 32 VTop 2
WINDOW 3 -4 32 VBottom 2
SYMATTR InstName D1
SYMATTR Value BZX84C6V2L
SYMBOL NMOS 1792 1040 R0
SYMATTR InstName Q1
SYMATTR Value FDS6680A
SYMBOL ind 1824 880 R0
SYMATTR InstName L1
SYMATTR Value 22µ
SYMBOL schottky 1904 1040 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName D2
SYMATTR Value 1N5819
SYMBOL cap 2016 1040 R0
SYMATTR InstName C2
SYMATTR Value 47µ
SYMBOL res 2112 1024 R0
SYMATTR InstName Rload
SYMATTR Value 10
SYMBOL voltage 2016 864 R0
SYMATTR InstName V1
SYMATTR Value 5
TEXT 1840 1272 Left 2 !.tran 2m startup