Version 4
SHEET 1 880 680
WIRE 144 16 -16 16
WIRE 432 16 208 16
WIRE -288 80 -352 80
WIRE -272 80 -288 80
WIRE -192 80 -272 80
WIRE -176 80 -192 80
WIRE 16 80 -80 80
WIRE 96 80 16 80
WIRE 176 80 96 80
WIRE 176 112 176 80
WIRE -352 128 -352 80
WIRE -272 128 -272 80
WIRE -96 160 -96 128
WIRE -16 160 -16 16
WIRE -16 160 -96 160
WIRE -192 224 -192 80
WIRE -96 224 -96 160
WIRE -96 224 -112 224
WIRE -80 224 -96 224
WIRE 16 224 16 80
WIRE 16 224 -16 224
WIRE 48 224 16 224
WIRE 368 224 304 224
WIRE 400 224 368 224
WIRE 432 224 432 16
WIRE 432 224 400 224
WIRE 464 224 432 224
WIRE 544 224 464 224
WIRE 464 240 464 224
WIRE 544 240 544 224
WIRE -352 256 -352 192
WIRE -272 256 -272 208
WIRE 368 256 368 224
WIRE -16 288 -16 224
WIRE 176 352 176 336
WIRE 464 352 464 320
WIRE 464 352 304 352
WIRE -16 400 -16 352
WIRE 544 432 544 320
WIRE 544 432 464 432
WIRE 176 448 176 432
WIRE 304 448 304 352
WIRE 304 448 176 448
WIRE 368 448 368 320
WIRE 544 448 544 432
FLAG -272 256 0
FLAG 544 448 0
FLAG 368 448 0
FLAG -352 256 0
FLAG 400 224 out
FLAG 96 80 in
FLAG -288 80 main
FLAG -16 400 0
SYMBOL PowerProducts\\LT3080 176 224 R0
SYMATTR InstName U1
SYMBOL res 160 336 R0
SYMATTR InstName R1
SYMATTR Value 100k
SYMBOL voltage -272 112 R0
WINDOW 123 0 0 Left 2
WINDOW 39 28 156 Left 2
WINDOW 0 -11 56 Left 2
WINDOW 3 17 19 Left 2
SYMATTR SpiceLine Rser=5m
SYMATTR InstName V1
SYMATTR Value 280
SYMBOL res 528 224 R0
SYMATTR InstName R2
SYMATTR Value 1k
SYMBOL cap 352 256 R0
SYMATTR InstName C1
SYMATTR Value 47µ
SYMBOL cap -368 128 R0
SYMATTR InstName C2
SYMATTR Value 10µ
SYMBOL nmos -176 128 R270
SYMATTR InstName M1
SYMATTR Value IXTH88N30P
SYMBOL zener 208 0 R90
WINDOW 0 6 5 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D2
SYMATTR Value EDZV6_8B
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL res -208 240 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R7
SYMATTR Value 10k
SYMBOL diode -16 208 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D3
SYMATTR Value 1N4148
SYMBOL cap -32 288 R0
SYMATTR InstName C3
SYMATTR Value 15µ
SYMBOL res 448 336 R0
SYMATTR InstName R3
SYMATTR Value 200k
SYMBOL res 448 224 R0
SYMATTR InstName R4
SYMATTR Value 1k
TEXT -48 464 Left 2 !.tran 20m startup