Version 4
SHEET 1 2312 928
WIRE 992 -80 224 -80
WIRE -128 -48 -208 -48
WIRE 368 -48 -128 -48
WIRE -208 -32 -208 -48
WIRE 64 -32 -80 -32
WIRE 560 -32 64 -32
WIRE 816 -32 560 -32
WIRE 560 -16 560 -32
WIRE 816 -16 816 -32
WIRE 64 0 64 -32
WIRE 224 0 224 -80
WIRE -208 48 -208 32
WIRE -80 64 -80 -32
WIRE -48 64 -80 64
WIRE 512 64 336 64
WIRE 368 80 368 -48
WIRE 816 80 816 64
WIRE -128 160 -128 -48
WIRE -48 160 -128 160
WIRE 368 160 368 144
WIRE 368 160 336 160
WIRE 480 160 368 160
WIRE 560 160 560 80
WIRE 560 160 544 160
WIRE -48 256 -80 256
WIRE 560 256 560 160
WIRE 560 256 336 256
WIRE 656 256 560 256
WIRE 800 256 736 256
WIRE 816 256 800 256
WIRE 912 256 896 256
WIRE 960 256 912 256
WIRE 992 256 992 -80
WIRE 992 256 960 256
WIRE 1024 256 992 256
WIRE 1168 256 1024 256
WIRE 1312 256 1168 256
WIRE 560 272 560 256
WIRE 1312 272 1312 256
WIRE 1024 288 1024 256
WIRE 1168 288 1168 256
WIRE -48 352 -80 352
WIRE 512 352 336 352
WIRE 1024 368 1024 352
WIRE 1168 368 1168 352
WIRE 1312 368 1312 352
WIRE 560 384 560 368
WIRE -48 448 -80 448
WIRE 432 448 336 448
WIRE 800 448 800 256
WIRE 800 448 432 448
WIRE 432 464 432 448
WIRE 960 496 960 256
WIRE -128 544 -160 544
WIRE -48 544 -64 544
WIRE 432 544 432 528
WIRE 432 544 336 544
WIRE 912 544 912 256
WIRE 912 544 432 544
WIRE -288 640 -320 640
WIRE -192 640 -224 640
WIRE -80 640 -112 640
WIRE -48 640 -80 640
WIRE 960 640 960 576
WIRE 960 640 336 640
WIRE 960 656 960 640
WIRE -240 736 -320 736
WIRE -80 736 -80 640
WIRE -80 736 -176 736
WIRE 144 736 144 704
WIRE 960 752 960 736
FLAG 560 384 0
FLAG 1024 368 0
FLAG 1312 368 0
FLAG 960 752 0
FLAG 1312 256 OUT
FLAG -208 48 0
FLAG -160 544 0
FLAG 816 80 0
FLAG 816 -32 IN
FLAG 144 736 0
FLAG -80 352 0
FLAG -80 256 0
FLAG 1168 368 0
FLAG -320 640 0
FLAG -320 736 0
FLAG -80 448 0
SYMBOL nmos 512 -16 R0
SYMATTR InstName Q1
SYMATTR Value BSC059N04LS6
SYMBOL ind 640 272 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L1
SYMATTR Value 0.68µ
SYMATTR SpiceLine Rser=1.7m
SYMBOL cap 1008 288 R0
WINDOW 3 37 34 Left 2
WINDOW 123 41 62 Left 2
SYMATTR Value 100µ
SYMATTR Value2 X4
SYMATTR SpiceLine Rser=5m
SYMATTR InstName C1
SYMBOL res 944 480 R0
SYMATTR InstName R1
SYMATTR Value 215k
SYMBOL res 944 640 R0
SYMATTR InstName R2
SYMATTR Value 68.1k
SYMBOL cap 480 176 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName C2
SYMATTR Value 0.1µ
SYMBOL cap -224 -32 R0
SYMATTR InstName C3
SYMATTR Value 4.7µ
SYMBOL cap -64 528 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C5
SYMATTR Value 0.01µ
SYMBOL voltage 816 -32 R0
WINDOW 3 20 93 Left 2
WINDOW 0 22 19 Left 2
SYMATTR Value 12
SYMATTR InstName V1
SYMBOL schottky 352 80 R0
WINDOW 3 20 64 Left 2
WINDOW 0 21 2 Left 2
SYMATTR Value CMDSH-4E
SYMATTR InstName D1
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL nmos 512 272 R0
SYMATTR InstName Q2
SYMATTR Value BSC022N04LS6
SYMBOL res 1296 256 R0
SYMATTR InstName Rload
SYMATTR Value 100
SYMBOL res 800 272 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R4
SYMATTR Value 1.5m
SYMBOL cap 1152 288 R0
WINDOW 3 42 34 Left 2
SYMATTR Value 470µ
SYMATTR SpiceLine Rser=18m
SYMATTR InstName C6
SYMBOL cap -224 624 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
WINDOW 39 53 32 VTop 2
SYMATTR InstName C8
SYMATTR Value 4700p
SYMBOL cap -176 720 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C4
SYMATTR Value 39p
SYMBOL res -96 624 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 6.19k
SYMBOL cap 448 528 R180
WINDOW 0 24 56 Left 2
WINDOW 3 24 8 Left 2
SYMATTR InstName C7
SYMATTR Value 1n
SYMBOL LTC7803 144 352 R0
SYMATTR InstName U1
TEXT 448 712 Left 2 !.tran 3m startup