Version 4
SHEET 1 1404 680
WIRE 656 -80 32 -80
WIRE 32 -64 32 -80
WIRE 32 48 32 0
WIRE 32 48 -144 48
WIRE 96 48 32 48
WIRE 272 48 176 48
WIRE 512 48 272 48
WIRE 512 80 512 48
WIRE 512 160 512 144
WIRE -144 176 -144 48
WIRE 272 192 272 48
WIRE 512 256 512 240
WIRE 656 256 656 -80
WIRE 656 256 512 256
WIRE 224 272 176 272
WIRE 512 272 512 256
WIRE 176 320 176 272
WIRE 464 352 416 352
WIRE -144 448 -144 256
WIRE 176 448 176 400
WIRE 176 448 -144 448
WIRE 272 448 272 288
WIRE 272 448 176 448
WIRE 416 448 416 432
WIRE 416 448 272 448
WIRE 512 448 512 368
WIRE 512 448 416 448
WIRE -144 464 -144 448
FLAG -144 464 0
SYMBOL voltage -144 160 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value PWL(0 4.5 0.1 3.4)
SYMBOL ind 80 64 R270
WINDOW 0 32 56 VTop 0
WINDOW 3 5 56 VBottom 0
SYMATTR InstName L1
SYMATTR Value 350µ
SYMATTR SpiceLine Rser=0.1
SYMBOL res 496 144 R0
SYMATTR InstName R1
SYMATTR Value 0.1
SYMBOL voltage 416 336 M0
WINDOW 0 24 104 Left 0
WINDOW 3 -191 137 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value PULSE(4 0 0 0.01m 0.01m 1m 10m 5)
SYMBOL nmos 464 272 R0
SYMATTR InstName M1
SYMATTR Value FDC637AN
SYMBOL LED 496 80 R0
SYMATTR InstName D2
SYMATTR Value LXK2-PW14
SYMBOL schottky 48 -64 M0
SYMATTR InstName D3
SYMATTR Value 1N5819
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL voltage 176 304 M0
WINDOW 0 24 104 Left 0
WINDOW 3 -202 213 Left 0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V3
SYMATTR Value PULSE(0 4 .05 .010m .001m .01m .2m)
SYMBOL nmos 224 192 R0
SYMATTR InstName M2
SYMATTR Value FDC637AN
TEXT -120 472 Left 0 !.tran 100m startup