Version 4
SHEET 1 1976 696
WIRE -816 -544 -912 -544
WIRE -656 -544 -816 -544
WIRE -912 -528 -912 -544
WIRE -656 -528 -656 -544
WIRE -816 -480 -816 -544
WIRE -800 -480 -816 -480
WIRE -496 -480 -512 -480
WIRE -416 -480 -432 -480
WIRE -912 -432 -912 -448
WIRE -480 -384 -512 -384
WIRE -480 -368 -480 -384
WIRE 752 -352 48 -352
WIRE -480 -288 -480 -304
WIRE -480 -288 -512 -288
WIRE -416 -288 -480 -288
WIRE -288 -288 -336 -288
WIRE -208 -288 -288 -288
WIRE -144 -288 -208 -288
WIRE -48 -288 -144 -288
WIRE 48 -288 48 -352
WIRE 48 -288 -48 -288
WIRE 176 -288 48 -288
WIRE -288 -272 -288 -288
WIRE -144 -256 -144 -288
WIRE -48 -256 -48 -288
WIRE 48 -208 48 -288
WIRE 176 -208 48 -208
WIRE -880 -192 -912 -192
WIRE -800 -192 -816 -192
WIRE -432 -192 -512 -192
WIRE -288 -192 -288 -208
WIRE 736 -144 720 -144
WIRE 784 -144 736 -144
WIRE 880 -144 784 -144
WIRE 944 -144 880 -144
WIRE -432 -128 -432 -192
WIRE -384 -128 -432 -128
WIRE -144 -128 -144 -192
WIRE -144 -128 -304 -128
WIRE -48 -128 -48 -176
WIRE -48 -128 -144 -128
WIRE 176 -128 -48 -128
WIRE 784 -112 784 -144
WIRE 944 -112 944 -144
WIRE -896 -96 -912 -96
WIRE -800 -96 -816 -96
WIRE -496 -96 -512 -96
WIRE -432 -80 -432 -128
WIRE 736 -64 736 -144
WIRE 736 -64 720 -64
WIRE 48 -48 48 -208
WIRE 80 -48 48 -48
WIRE 176 -48 160 -48
WIRE 784 -16 784 -48
WIRE 944 -16 944 -32
WIRE -432 16 -432 0
WIRE 416 32 416 16
WIRE 512 32 512 16
WIRE 640 32 640 16
WIRE 752 32 752 -352
WIRE 752 32 640 32
WIRE 288 64 288 16
WIRE 288 96 288 64
WIRE 288 192 288 176
FLAG 416 32 0
FLAG 512 32 0
FLAG 784 -16 0
FLAG 880 -144 OutLDO
FLAG -912 -96 0
FLAG -912 -192 0
FLAG -912 -432 0
FLAG -416 -480 0
FLAG -288 -192 0
FLAG -432 16 0
FLAG -912 -544 IN
FLAG -496 -96 0
FLAG 944 -16 0
FLAG 288 192 0
FLAG -208 -288 OutSw
FLAG 288 64 vSET
SYMBOL res 64 -64 M90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 200K
SYMBOL cap 768 -112 R0
WINDOW 40 24 36 Left 2
SYMATTR InstName C2
SYMATTR Value 10µx2
SYMATTR SpiceLine Rser=5m
SYMBOL res -800 -112 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R5
SYMATTR Value 40.2K
SYMBOL cap -816 -208 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C3
SYMATTR Value 1n
SYMBOL voltage -912 -544 R0
SYMATTR InstName V2
SYMATTR Value 20
SYMBOL cap -496 -464 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName C4
SYMATTR Value 1µ
SYMBOL ind -432 -272 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L1
SYMATTR Value 15µ
SYMATTR SpiceLine Rser=3m
SYMBOL cap -496 -368 R0
SYMATTR InstName C5
SYMATTR Value .22µ
SYMBOL cap -304 -272 R0
SYMATTR InstName C6
SYMATTR Value 47µ
SYMATTR SpiceLine V=6.3 Irms=0 Rser=0.002 Lser=0 mfg="TDK" pn="C4532X5ROJ47@M" type="X5R"
SYMBOL res -448 -96 R0
SYMATTR InstName R7
SYMATTR Value 7.68K
SYMBOL LT8608 -656 -288 R0
SYMATTR InstName U1
SYMBOL res -288 -144 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R6
SYMATTR Value 2.21K
SYMBOL res -64 -272 R0
SYMATTR InstName R2
SYMATTR Value 140K
SYMBOL res 928 -128 R0
SYMATTR InstName RLOAD
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)
SYMBOL cap -160 -256 R0
SYMATTR InstName C1
SYMATTR Value 220p
SYMBOL LT3041 416 -144 R0
SYMATTR InstName U2
TEXT 264 280 Left 2 !.tran 1.3m startup
TEXT -1056 -280 Left 2 ;C3 reduced for fast\nstartup simulation
TEXT -104 -496 Left 2 ;Switcher output (OutSw) programmed to be 1 volt\ngreater than LT3041 output (OutLDO)