Version 4 SHEET 1 2760 680 WIRE 1472 -128 1200 -128 WIRE 1792 -128 1472 -128 WIRE 1824 -128 1792 -128 WIRE 1920 -128 1904 -128 WIRE 2032 -128 1920 -128 WIRE 2176 -128 2096 -128 WIRE 2240 -128 2176 -128 WIRE 2352 -128 2240 -128 WIRE 1200 -112 1200 -128 WIRE 1472 -112 1472 -128 WIRE 2352 -112 2352 -128 WIRE 2240 -96 2240 -128 WIRE 1792 -80 1792 -128 WIRE 1920 -80 1920 -128 WIRE 1200 -16 1200 -32 WIRE 1472 -16 1472 -32 WIRE 1696 -16 1472 -16 WIRE 2096 -16 2016 -16 WIRE 2240 -16 2240 -32 WIRE 2352 -16 2352 -32 WIRE 2096 16 2096 -16 WIRE 1472 80 1472 64 WIRE 1600 80 1472 80 WIRE 1696 80 1664 80 WIRE 2048 80 2016 80 WIRE 2176 144 2176 -128 WIRE 1472 176 1472 80 WIRE 1536 176 1472 176 WIRE 1696 176 1616 176 WIRE 2048 176 2048 80 WIRE 2048 176 2016 176 WIRE 1472 272 1472 176 WIRE 1488 272 1472 272 WIRE 1584 272 1552 272 WIRE 1696 272 1664 272 WIRE 2176 272 2176 224 WIRE 2176 272 2016 272 WIRE 2176 288 2176 272 WIRE 1920 352 1920 336 WIRE 1472 384 1472 272 WIRE 1792 384 1792 336 WIRE 1792 384 1472 384 WIRE 2096 384 2096 80 WIRE 2096 384 1792 384 WIRE 2176 384 2176 368 WIRE 2176 384 2096 384 FLAG 2240 -16 0 FLAG 2352 -16 0 FLAG 1200 -16 0 FLAG 2352 -128 OUT FLAG 1200 -128 IN FLAG 1920 352 0 SYMBOL RES 1632 160 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R1 SYMATTR Value 41.2K SYMBOL res 2160 272 R0 SYMATTR InstName R2 SYMATTR Value 15.8K SYMBOL res 2160 128 R0 SYMATTR InstName R3 SYMATTR Value 464K SYMBOL ind 1808 -112 R270 WINDOW 0 32 56 VTop 2 WINDOW 3 5 56 VBottom 2 SYMATTR InstName L1 SYMATTR Value 33µ SYMBOL schottky 2032 -112 R270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName D1 SYMATTR Value MBRS360 SYMBOL polcap 2224 -96 R0 WINDOW 40 27 64 Left 2 WINDOW 3 40 36 Left 2 SYMATTR SpiceLine2 x2 SYMATTR Value 4.7µ SYMATTR InstName C1 SYMATTR SpiceLine Rser=.1 SYMBOL res 1680 256 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R4 SYMATTR Value 10K SYMBOL cap 1552 288 M270 WINDOW 0 32 32 VTop 2 WINDOW 3 0 32 VBottom 2 SYMATTR InstName C2 SYMATTR Value .01µ SYMBOL VOLTAGE 1200 -128 R0 WINDOW 3 -98 150 Left 2 WINDOW 123 0 0 Left 2 WINDOW 39 0 0 Left 2 SYMATTR InstName V1 SYMATTR Value PWL(0 0 20u 12 3m 12 13m 42) SYMBOL polcap 2080 16 R0 SYMATTR InstName C3 SYMATTR Value 4.7µ SYMBOL cap 1664 64 R90 WINDOW 0 0 32 VBottom 2 WINDOW 3 32 32 VTop 2 SYMATTR InstName C4 SYMATTR Value .01µ SYMBOL res 1456 -32 R0 SYMATTR InstName R5 SYMATTR Value 53.6K SYMBOL res 1456 -128 R0 SYMATTR InstName R6 SYMATTR Value 392K SYMBOL res 2336 -128 R0 SYMATTR InstName Rload SYMATTR Value 96 SYMBOL PowerProducts\\LT3958 1856 128 R0 SYMATTR InstName U1 TEXT 2264 400 Left 2 !.tran 13m startup