Version 4
SHEET 1 1976 696
WIRE -720 -544 -816 -544
WIRE -560 -544 -720 -544
WIRE -816 -528 -816 -544
WIRE -560 -528 -560 -544
WIRE -720 -480 -720 -544
WIRE -704 -480 -720 -480
WIRE -400 -480 -416 -480
WIRE -320 -480 -336 -480
WIRE -816 -432 -816 -448
WIRE -384 -384 -416 -384
WIRE 800 -384 48 -384
WIRE -384 -368 -384 -384
WIRE -384 -288 -384 -304
WIRE -384 -288 -416 -288
WIRE -320 -288 -384 -288
WIRE -192 -288 -240 -288
WIRE -112 -288 -192 -288
WIRE -64 -288 -112 -288
WIRE 48 -288 48 -384
WIRE 48 -288 -64 -288
WIRE 176 -288 48 -288
WIRE -192 -272 -192 -288
WIRE -64 -256 -64 -288
WIRE 48 -208 48 -288
WIRE 176 -208 48 -208
WIRE -832 -192 -864 -192
WIRE -704 -192 -768 -192
WIRE -336 -192 -416 -192
WIRE -192 -192 -192 -208
WIRE 752 -144 720 -144
WIRE 880 -144 752 -144
WIRE 976 -144 880 -144
WIRE 1040 -144 976 -144
WIRE -336 -128 -336 -192
WIRE -288 -128 -336 -128
WIRE -64 -128 -64 -176
WIRE -64 -128 -208 -128
WIRE 176 -128 -64 -128
WIRE 880 -128 880 -144
WIRE 1040 -112 1040 -144
WIRE -848 -96 -864 -96
WIRE -704 -96 -768 -96
WIRE -400 -96 -416 -96
WIRE 752 -64 752 -144
WIRE 752 -64 720 -64
WIRE 48 -48 48 -208
WIRE 80 -48 48 -48
WIRE 176 -48 160 -48
WIRE 880 -32 880 -64
WIRE 1040 -16 1040 -32
WIRE -336 0 -336 -128
WIRE 416 32 416 16
WIRE 512 48 512 16
WIRE 640 48 640 16
WIRE 800 48 800 -384
WIRE 800 48 640 48
WIRE -336 96 -336 80
WIRE 288 96 288 16
WIRE 288 192 288 176
FLAG 416 32 0
FLAG 512 48 0
FLAG 880 -32 0
FLAG 976 -144 OutLDO
FLAG -864 -96 0
FLAG -864 -192 0
FLAG -816 -432 0
FLAG -320 -480 0
FLAG -192 -192 0
FLAG -336 96 0
FLAG -816 -544 IN
FLAG -400 -96 0
FLAG 1040 -16 0
FLAG 288 192 0
FLAG -112 -288 OutSw
SYMBOL res 176 -64 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 200K
SYMBOL cap 864 -128 R0
WINDOW 40 24 36 Left 2
SYMATTR InstName C2
SYMATTR Value 10u
SYMATTR SpiceLine Rser=3m
SYMBOL LT3045-1 416 -144 R0
SYMATTR InstName U2
SYMBOL res -752 -112 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R5
SYMATTR Value 40.2K
SYMBOL cap -768 -208 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C3
SYMATTR Value 1n
SYMBOL voltage -816 -544 R0
SYMATTR InstName V2
SYMATTR Value 20
SYMBOL cap -400 -464 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName C4
SYMATTR Value 1u
SYMBOL ind -336 -272 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L1
SYMATTR Value 2.2u
SYMATTR SpiceLine Rser=3m
SYMBOL cap -400 -368 R0
SYMATTR InstName C5
SYMATTR Value .22u
SYMBOL cap -208 -272 R0
SYMATTR InstName C6
SYMATTR Value 47u
SYMATTR SpiceLine V=6.3 Irms=0 Rser=0.002 Lser=0 mfg="TDK" pn="C4532X5ROJ47@M" type="X5R"
SYMBOL res -352 -16 R0
SYMATTR InstName R7
SYMATTR Value 7.68K
SYMBOL LT8608 -560 -288 R0
SYMATTR InstName U1
SYMBOL res -192 -144 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R6
SYMATTR Value 2.21K
SYMBOL res -80 -272 R0
SYMATTR InstName R2
SYMATTR Value 140K
SYMBOL res 1024 -128 R0
SYMATTR InstName R3
SYMATTR Value 10
SYMBOL voltage 288 80 R0
WINDOW 123 0 0 Left 2
WINDOW 39 24 124 Left 2
SYMATTR SpiceLine Rser=100
SYMATTR InstName V4
SYMATTR Value PWL(0 0 500u 0 600u 3 700u 3 900u 4 900u 4 1m 4 1.2m 3)
TEXT 904 256 Left 2 !.tran 1.3m startup
TEXT -960 -280 Left 2 ;C3 reduced for fast\nstartup simulation
TEXT -104 -496 Left 2 ;Switcher output (OutSw) programmed to be 1 volt\ngreater than LT3045-1 output (OutLDO),