Version 4
SHEET 1 1976 2072
WIRE 240 -800 -176 -800
WIRE 320 -800 240 -800
WIRE 464 -800 400 -800
WIRE 1072 -800 464 -800
WIRE 464 -784 464 -800
WIRE 240 -688 240 -800
WIRE 320 -688 240 -688
WIRE 464 -688 464 -704
WIRE 464 -688 384 -688
WIRE 240 -608 240 -688
WIRE 352 -608 240 -608
WIRE 688 -608 576 -608
WIRE 736 -608 688 -608
WIRE 240 -560 240 -608
WIRE 352 -560 352 -608
WIRE 464 -560 464 -688
WIRE 576 -560 576 -608
WIRE 688 -560 688 -608
WIRE -320 -480 -400 -480
WIRE -240 -480 -320 -480
WIRE -112 -480 -240 -480
WIRE 80 -480 16 -480
WIRE 144 -480 80 -480
WIRE 816 -480 752 -480
WIRE 880 -480 816 -480
WIRE 1136 -480 1008 -480
WIRE 1216 -480 1136 -480
WIRE 1296 -480 1216 -480
WIRE 1456 -480 1296 -480
WIRE -112 -448 -112 -480
WIRE 16 -448 16 -480
WIRE 880 -448 880 -480
WIRE 1008 -448 1008 -480
WIRE -400 -432 -400 -480
WIRE 1296 -416 1296 -480
WIRE 1456 -416 1456 -480
WIRE 144 -368 -64 -368
WIRE 960 -368 752 -368
WIRE -400 -304 -400 -352
WIRE -176 -304 -176 -800
WIRE -112 -304 -112 -352
WIRE -112 -304 -176 -304
WIRE 1008 -304 1008 -352
WIRE 1072 -304 1072 -800
WIRE 1072 -304 1008 -304
WIRE 1296 -304 1296 -352
WIRE 1456 -304 1456 -336
WIRE -112 -256 -112 -304
WIRE 16 -256 16 -384
WIRE 16 -256 -112 -256
WIRE 144 -256 16 -256
WIRE 880 -256 880 -384
WIRE 880 -256 752 -256
WIRE 1008 -256 1008 -304
WIRE 1008 -256 880 -256
WIRE -112 -224 -112 -256
WIRE 1008 -224 1008 -256
WIRE 144 -144 -64 -144
WIRE 960 -144 752 -144
WIRE -112 -112 -112 -128
WIRE 1008 -112 1008 -128
WIRE -240 -32 -240 -480
WIRE 144 -32 -240 -32
WIRE 800 -32 752 -32
WIRE 1136 -32 1136 -480
WIRE 1136 -32 800 -32
WIRE 1136 0 1136 -32
WIRE 800 32 800 -32
WIRE 800 32 752 32
WIRE 1136 112 1136 80
WIRE 1136 112 752 112
WIRE 1136 144 1136 112
WIRE 32 224 0 224
WIRE 144 224 112 224
WIRE 1136 256 1136 224
WIRE 800 448 752 448
WIRE 896 448 864 448
WIRE 32 560 0 560
WIRE 144 560 96 560
WIRE 144 672 64 672
WIRE 896 672 752 672
WIRE -192 784 -224 784
WIRE -96 784 -128 784
WIRE 16 784 -16 784
WIRE 64 784 64 672
WIRE 64 784 16 784
WIRE 144 784 64 784
WIRE 800 784 752 784
WIRE 896 784 800 784
WIRE 960 784 896 784
WIRE 1088 784 1024 784
WIRE 1136 784 1088 784
WIRE 800 800 800 784
WIRE -144 880 -224 880
WIRE 16 880 16 784
WIRE 16 880 -80 880
WIRE 800 880 800 864
WIRE 896 880 896 784
WIRE 960 880 896 880
WIRE 1088 880 1024 880
WIRE 1136 880 1088 880
WIRE 448 896 448 864
FLAG -112 -112 0
FLAG 1008 -112 0
FLAG 1216 -480 VOUT
FLAG -400 -304 0
FLAG -320 -480 VIN
FLAG 1136 256 0
FLAG 448 896 0
FLAG 80 -480 BOOST1
FLAG 816 -480 BOOST2
FLAG 0 224 0
FLAG 0 560 0
FLAG 736 -608 0
FLAG 1456 -304 0
FLAG -224 784 0
FLAG -224 880 0
FLAG 896 448 0
FLAG 1088 784 BOOST1
FLAG 1088 880 BOOST2
FLAG 800 880 0
FLAG 896 672 0
FLAG 1296 -304 0
SYMBOL nmos -64 -448 M0
SYMATTR InstName M1
SYMATTR Value BSC123N08NS3
SYMBOL nmos -64 -224 M0
SYMATTR InstName M2
SYMATTR Value BSC123N08NS3
SYMBOL cap 0 -448 R0
SYMATTR InstName Cbst1
SYMATTR Value 1µ
SYMBOL cap 896 -448 M0
SYMATTR InstName Cbst2
SYMATTR Value 1µ
SYMBOL nmos 960 -448 R0
SYMATTR InstName M3
SYMATTR Value BSC123N08NS3
SYMBOL nmos 960 -224 R0
SYMATTR InstName M4
SYMATTR Value BSC123N08NS3
SYMBOL cap 1280 -416 R0
WINDOW 39 24 78 Left 2
SYMATTR SpiceLine Rser=5m
SYMATTR InstName Cout
SYMATTR Value 400µ
SYMBOL voltage -400 -448 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName VIN
SYMATTR Value 8
SYMBOL res 1120 -16 R0
SYMATTR InstName Rfb1
SYMATTR Value 110k
SYMBOL res 1120 128 R0
SYMATTR InstName Rfb2
SYMATTR Value 10k
SYMBOL res 128 208 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName Rfreq
SYMATTR Value 100k
SYMBOL cap 96 544 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName Css
SYMATTR Value 4.7n
SYMBOL cap 384 -704 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName Cs
SYMATTR Value 47n
SYMBOL res 448 -800 R0
SYMATTR InstName Rs
SYMATTR Value 10k
SYMBOL ind 304 -784 R270
WINDOW 0 5 56 VBottom 2
WINDOW 3 32 56 VTop 2
WINDOW 123 82 54 VBottom 2
SYMATTR InstName L1
SYMATTR Value 4.7µ
SYMATTR Value2 Rser=10m
SYMBOL cap 864 432 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName Cintvcc
SYMATTR Value 4.7µ
SYMBOL res 1440 -432 R0
SYMATTR InstName Rload
SYMATTR Value 5
SYMBOL LTC7878 144 -560 R0
SYMATTR InstName U1
SYMBOL res 0 768 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName Rth
SYMATTR Value 10k
SYMBOL cap -128 768 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName Cth1
SYMATTR Value 10n
SYMBOL cap -80 864 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName Cth2
SYMATTR Value 100p
SYMBOL schottky 960 768 M90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName Dbst1
SYMATTR Value RB168VYM-60
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL schottky 960 864 M90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName Dbst2
SYMATTR Value RB168VYM-60
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL cap 784 800 R0
SYMATTR InstName Cdrvcc
SYMATTR Value 4.7µ
TEXT 1128 552 Left 2 !.tran 3m startup