Version 4
SHEET 1 1532 680
WIRE -208 -192 -224 -192
WIRE -32 -192 -208 -192
WIRE 160 -192 -32 -192
WIRE 304 -192 160 -192
WIRE 512 -192 400 -192
WIRE 640 -192 512 -192
WIRE 816 -192 640 -192
WIRE 832 -192 816 -192
WIRE 832 -176 832 -192
WIRE 992 -160 880 -160
WIRE -224 -144 -224 -192
WIRE 640 -144 640 -192
WIRE 992 -144 992 -160
WIRE 832 -80 832 -96
WIRE 992 -48 992 -64
WIRE 640 -32 640 -80
WIRE -224 -16 -224 -64
WIRE 160 0 160 -192
WIRE 320 0 320 -144
WIRE -32 96 -32 -192
WIRE -32 96 -96 96
WIRE 64 96 -32 96
WIRE 512 144 512 -192
WIRE 512 144 416 144
WIRE -96 160 -96 96
WIRE -32 192 -32 96
WIRE 64 192 -32 192
WIRE -96 272 -96 224
WIRE 240 336 240 288
FLAG 240 336 0
FLAG -96 272 0
FLAG 640 -32 0
FLAG -224 -16 0
FLAG -208 -192 IN
FLAG 816 -192 OUT
FLAG 832 -80 0
FLAG 880 -112 0
FLAG 992 -48 0
SYMBOL cap -112 160 R0
SYMATTR InstName C1
SYMATTR Value 0.1µ
SYMBOL voltage -224 -160 R0
SYMATTR InstName V1
SYMATTR Value 12
SYMBOL cap 624 -144 R0
SYMATTR InstName C2
SYMATTR Value 100µ
SYMBOL MAX16171 240 144 R0
SYMATTR InstName U1
SYMBOL nmos 400 -144 M270
WINDOW 0 52 47 VTop 2
WINDOW 3 -16 79 VLeft 2
SYMATTR InstName Q1
SYMATTR Value IPD068N10N3
SYMBOL sw 832 -80 R180
WINDOW 0 -23 102 Right 2
WINDOW 3 -26 2 Right 2
SYMATTR InstName S1
SYMATTR Value SCSW
SYMBOL voltage 992 -160 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V2
SYMATTR Value PWL(0 0 6m 0 +1m 1)
TEXT 560 272 Left 2 !.tran 20m startup
TEXT 560 232 Left 2 !.model SCSW SW(Ron=2 Roff=200 Vt=.5 Vh=-.4)