Version 4
SHEET 1 2476 756
WIRE -256 -112 -448 -112
WIRE -160 -112 -192 -112
WIRE -96 -112 -160 -112
WIRE -16 -112 -96 -112
WIRE 112 -112 -16 -112
WIRE 208 -112 192 -112
WIRE 224 -112 208 -112
WIRE 400 -112 320 -112
WIRE 672 -112 400 -112
WIRE 864 -112 752 -112
WIRE 976 -112 864 -112
WIRE -448 -96 -448 -112
WIRE 864 -96 864 -112
WIRE 976 -96 976 -112
WIRE -16 -80 -16 -112
WIRE 736 -48 736 -64
WIRE -96 -16 -96 -112
WIRE -448 0 -448 -16
WIRE 688 0 688 -64
WIRE 864 0 864 -16
WIRE 976 0 976 -32
WIRE 112 32 112 -112
WIRE 208 32 208 -112
WIRE 304 32 304 -64
WIRE 400 32 400 -112
WIRE -160 80 -160 -112
WIRE 0 80 -160 80
WIRE 688 96 688 80
WIRE 528 112 512 112
WIRE 608 112 592 112
WIRE -16 128 -16 0
WIRE 0 128 -16 128
WIRE 0 176 -16 176
WIRE 608 176 512 176
WIRE -96 224 -96 64
WIRE 0 224 -96 224
WIRE 528 240 512 240
WIRE 608 240 592 240
WIRE -160 272 -160 80
WIRE 0 272 -160 272
WIRE 304 400 304 320
WIRE -160 448 -160 272
WIRE 112 448 112 320
WIRE 112 448 -160 448
WIRE 208 448 208 320
WIRE 208 448 192 448
WIRE 224 448 208 448
WIRE 400 448 400 320
WIRE 400 448 320 448
WIRE 672 448 400 448
WIRE 864 448 752 448
WIRE 976 448 864 448
WIRE 864 464 864 448
WIRE 976 464 976 448
WIRE -160 480 -160 448
WIRE 688 544 688 496
WIRE 864 560 864 544
WIRE 976 560 976 528
WIRE -160 576 -160 544
WIRE 688 640 688 624
FLAG -448 0 0
FLAG 864 0 0
FLAG 976 0 0
FLAG 688 96 0
FLAG 608 176 0
FLAG 736 -48 0
FLAG 864 560 0
FLAG 976 560 0
FLAG 688 640 0
FLAG 736 496 0
FLAG -160 576 0
FLAG -16 176 0
FLAG 608 112 0
FLAG 608 240 0
SYMBOL nmos 224 -64 R270
WINDOW 0 85 54 VTop 2
WINDOW 3 55 71 VTop 2
SYMATTR InstName Q1
SYMATTR Value FDMS86500DC
SYMBOL res 96 -96 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R1
SYMATTR Value 30m
SYMBOL voltage -448 -112 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value PWL(0 0 2m 12)
SYMBOL nmos 224 400 M90
WINDOW 0 -15 72 VLeft 2
WINDOW 3 52 55 VTop 2
SYMATTR InstName Q2
SYMATTR Value FDMS86500DC
SYMBOL res 96 464 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R2
SYMATTR Value 30m
SYMBOL sw 768 -112 M270
WINDOW 0 28 24 VLeft 2
WINDOW 3 -29 20 VLeft 2
SYMATTR InstName S1
SYMBOL res 848 -112 R0
SYMATTR InstName R3
SYMATTR Value 1K
SYMBOL cap 960 -96 R0
WINDOW 123 27 66 Left 2
WINDOW 3 43 35 Left 2
SYMATTR Value2 Rser=10m
SYMATTR Value 1m
SYMATTR InstName C1
SYMBOL voltage 688 -16 R0
WINDOW 123 24 138 Left 2
WINDOW 39 24 117 Left 2
SYMATTR InstName V2
SYMATTR Value PWL(0 0 60m 0 60.01m 1)
SYMBOL cap 528 128 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName C2
SYMATTR Value 220n
SYMBOL cap 528 256 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName C3
SYMATTR Value 220n
SYMBOL res -32 -96 R0
SYMATTR InstName R4
SYMATTR Value 10K
SYMBOL res -112 -32 R0
SYMATTR InstName R5
SYMATTR Value 10K
SYMBOL LTC4226-1 256 192 R0
SYMATTR InstName U1
SYMBOL schottky -256 -96 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName D1
SYMATTR Value SS3P5
SYMBOL sw 768 448 M270
WINDOW 0 29 24 VLeft 2
WINDOW 3 -26 16 VLeft 2
SYMATTR InstName S2
SYMBOL res 848 448 R0
SYMATTR InstName R6
SYMATTR Value 1K
SYMBOL cap 960 464 R0
WINDOW 123 27 67 Left 2
WINDOW 3 41 32 Left 2
SYMATTR Value2 Rser=10m
SYMATTR Value 1m
SYMATTR InstName C4
SYMBOL voltage 688 528 R0
WINDOW 123 24 138 Left 2
WINDOW 39 24 117 Left 2
SYMATTR InstName V3
SYMATTR Value PWL(0 0 60m 0 60.01m 1)
SYMBOL TVSdiode -176 544 M180
WINDOW 0 24 70 Left 2
WINDOW 3 24 -4 Left 2
SYMATTR InstName D2
SYMATTR Value SMCJ33A
SYMATTR Type zener
TEXT 8 600 Left 2 !.model SW SW(Ron=1m Roff=1K Vt=.5 Vh=.1)
TEXT 1072 608 Left 2 !.tran 70m