Version 4
SHEET 1 2688 1672
WIRE 1568 1200 1456 1200
WIRE 1680 1200 1568 1200
WIRE 1696 1200 1680 1200
WIRE 1808 1200 1776 1200
WIRE 1888 1200 1808 1200
WIRE 2032 1200 1952 1200
WIRE 2160 1200 2032 1200
WIRE 2272 1200 2160 1200
WIRE 1456 1216 1456 1200
WIRE 2160 1216 2160 1200
WIRE 2272 1216 2272 1200
WIRE 2032 1248 2032 1200
WIRE 1680 1264 1680 1200
WIRE 1808 1264 1808 1200
WIRE 1456 1312 1456 1296
WIRE 2160 1312 2160 1280
WIRE 2272 1312 2272 1296
WIRE 1568 1344 1568 1200
WIRE 1600 1344 1568 1344
WIRE 2032 1344 2032 1328
WIRE 2032 1344 1888 1344
WIRE 2032 1360 2032 1344
WIRE 1600 1408 1568 1408
WIRE 2032 1456 2032 1440
WIRE 1568 1472 1568 1408
WIRE 1600 1472 1568 1472
WIRE 1904 1472 1888 1472
WIRE 1984 1472 1968 1472
WIRE 1744 1568 1744 1552
FLAG 2032 1456 0
FLAG 1744 1568 0
FLAG 1984 1472 0
FLAG 2160 1312 0
FLAG 1456 1312 0
FLAG 2272 1312 0
FLAG 2272 1200 OUT
FLAG 1456 1200 IN
SYMBOL ind 1680 1216 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L1
SYMATTR Value 5.4µ
SYMATTR SpiceLine Rser=.05
SYMBOL RES 2016 1232 R0
SYMATTR InstName R1
SYMATTR Value 28.7K
SYMBOL res 2016 1344 R0
SYMATTR InstName R2
SYMATTR Value 5.23K
SYMBOL cap 1904 1488 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName C3
SYMATTR Value .005µ
SYMBOL schottky 1888 1184 M90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D1
SYMATTR Value MBRS340
SYMBOL cap 2144 1216 R0
SYMATTR InstName C2
SYMATTR Value 20µ
SYMATTR SpiceLine Rser=50m
SYMBOL VOLTAGE 1456 1200 R0
SYMATTR InstName V1
SYMATTR Value 3.3
SYMBOL PowerProducts\\LT1946A 1744 1408 R0
SYMATTR InstName U1
SYMBOL RES 2256 1200 R0
SYMATTR InstName Rload
SYMATTR Value 20
TEXT 2104 1488 Left 2 !.tran 750u startup