Version 4
SHEET 1 1480 680
WIRE -336 -64 -480 -64
WIRE 368 -64 -336 -64
WIRE 496 -64 368 -64
WIRE 640 -64 496 -64
WIRE 800 -64 736 -64
WIRE 848 -64 800 -64
WIRE 992 -64 928 -64
WIRE 1088 -64 992 -64
WIRE 1168 -64 1088 -64
WIRE -48 -32 -208 -32
WIRE 448 -32 -48 -32
WIRE 576 -16 32 -16
WIRE 656 -16 576 -16
WIRE -480 0 -480 -64
WIRE -336 0 -336 -64
WIRE -48 0 -48 -32
WIRE 496 0 496 -64
WIRE 992 0 992 -64
WIRE 1088 0 1088 -64
WIRE 1168 0 1168 -64
WIRE 32 16 32 -16
WIRE 112 64 80 64
WIRE 368 64 368 -64
WIRE 368 64 336 64
WIRE 80 80 80 64
WIRE 800 112 800 -64
WIRE -48 128 -48 80
WIRE 112 128 -48 128
WIRE 1168 144 1168 80
WIRE 1280 144 1168 144
WIRE 992 160 992 64
WIRE -480 176 -480 80
WIRE -48 176 -48 128
WIRE -208 192 -208 -32
WIRE 32 192 32 96
WIRE 112 192 32 192
WIRE 416 192 336 192
WIRE 448 192 448 -32
WIRE 448 192 416 192
WIRE 496 192 496 80
WIRE 496 192 448 192
WIRE -112 224 -176 224
WIRE 1168 224 1168 144
WIRE 384 256 336 256
WIRE 448 256 384 256
WIRE 384 272 384 256
WIRE 448 304 448 256
WIRE 448 304 416 304
WIRE -480 368 -480 256
WIRE -336 368 -336 64
WIRE -208 368 -208 256
WIRE -48 368 -48 256
WIRE 384 368 384 336
WIRE 800 368 800 176
WIRE 992 368 992 240
WIRE 1088 368 1088 80
WIRE 1168 368 1168 304
WIRE -112 416 -112 224
WIRE 1280 416 1280 144
WIRE 1280 416 -112 416
FLAG 80 80 0
FLAG -480 368 0
FLAG 384 368 0
FLAG 800 368 0
FLAG -48 368 0
FLAG 992 368 0
FLAG 1088 368 0
FLAG -336 368 0
FLAG 368 -64 VIN
FLAG 992 -64 VOUT
FLAG 576 -16 GATE
FLAG -48 128 TRIG
FLAG 416 192 THRS
FLAG 384 256 CV
FLAG 1168 368 0
FLAG -208 368 0
SYMBOL Misc\\NE555 224 160 R0
SYMATTR InstName U1
SYMBOL voltage -480 160 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V1
SYMATTR Value 7V
SYMBOL pmos 736 -16 M270
SYMATTR InstName M1
SYMATTR Value AO6407
SYMBOL ind 832 -48 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L1
SYMATTR Value 10µH
SYMBOL schottky 816 176 R180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D1
SYMATTR Value SS24
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL res -64 -16 R0
SYMATTR InstName R1
SYMATTR Value 2.2K
SYMBOL res -64 160 R0
SYMATTR InstName R2
SYMATTR Value 2.4K
SYMBOL res 480 -16 R0
SYMATTR InstName R3
SYMATTR Value 4.7K
SYMBOL res -496 -16 R0
SYMATTR InstName R5
SYMATTR Value 150
SYMBOL cap -352 0 R0
SYMATTR InstName C1
SYMATTR Value 22µF
SYMBOL cap 976 0 R0
SYMATTR InstName C2
SYMATTR Value 330µF
SYMBOL res 1072 -16 R0
SYMATTR InstName R6
SYMATTR Value 1000
SYMBOL res 16 0 R0
SYMATTR InstName R4
SYMATTR Value 33
SYMBOL res 1152 -16 R0
SYMATTR InstName R7
SYMATTR Value 1200K
SYMBOL res 1152 208 R0
SYMATTR InstName R8
SYMATTR Value 2700K
SYMBOL TL431 384 304 R0
SYMATTR InstName U2
SYMBOL TL431 -208 224 R0
SYMATTR InstName U3
SYMBOL voltage 992 144 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V2
SYMATTR Value 2.5V
TEXT -504 424 Left 2 !.tran 100ms startup