Version 4
SHEET 1 1268 680
WIRE 208 -96 176 -96
WIRE 320 -96 288 -96
WIRE 176 -48 176 -96
WIRE 320 -48 320 -96
WIRE 32 16 -80 16
WIRE 64 16 32 16
WIRE 560 16 448 16
WIRE 656 16 560 16
WIRE -80 32 -80 16
WIRE 560 32 560 16
WIRE 656 32 656 16
WIRE 32 80 32 16
WIRE 64 80 32 80
WIRE 464 80 448 80
WIRE -80 128 -80 112
WIRE 560 128 560 96
WIRE 656 128 656 112
WIRE 480 144 448 144
WIRE 512 144 480 144
WIRE 512 160 512 144
WIRE 64 208 -48 208
WIRE 480 208 480 144
WIRE 480 208 448 208
WIRE -48 240 -48 208
WIRE 64 272 48 272
WIRE 512 272 512 240
WIRE 512 272 448 272
WIRE 512 288 512 272
WIRE -48 336 -48 320
WIRE 64 336 -48 336
WIRE 464 336 448 336
WIRE 64 400 48 400
WIRE 464 400 448 400
WIRE 560 400 544 400
WIRE 64 464 48 464
WIRE 496 464 448 464
WIRE 496 480 496 464
WIRE 176 544 176 528
WIRE 320 544 320 528
WIRE 496 560 496 544
FLAG 464 80 0
FLAG 560 128 0
FLAG 656 128 0
FLAG 560 400 0
FLAG 512 288 0
FLAG 320 544 0
FLAG 176 544 0
FLAG -80 128 0
FLAG 496 560 0
FLAG -80 16 IN
FLAG 656 16 OUT
SYMBOL ind 192 -80 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L1
SYMATTR Value 5.6µ
SYMBOL cap 544 32 R0
SYMATTR InstName C1
SYMATTR Value 330µ
SYMBOL res 496 144 R0
SYMATTR InstName R1
SYMATTR Value 7.5m
SYMBOL res 560 384 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 2.74K
SYMBOL voltage -80 16 R0
SYMATTR InstName V1
SYMATTR Value 18
SYMBOL cap 480 480 R0
SYMATTR InstName C2
SYMATTR Value .001µ
SYMBOL res -64 336 M180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R3
SYMATTR Value 100K
SYMBOL res 640 16 R0
SYMATTR InstName Rload
SYMATTR Value 15
SYMBOL PowerProducts\\LTM4609 256 240 R0
SYMATTR InstName U1
TEXT 584 480 Left 2 !.tran 120m startup