Version 4
SHEET 1 2184 704
WIRE -112 -16 -240 -16
WIRE 80 -16 -112 -16
WIRE 288 -16 80 -16
WIRE 400 -16 336 -16
WIRE 496 -16 464 -16
WIRE 560 -16 496 -16
WIRE 656 -16 560 -16
WIRE -240 0 -240 -16
WIRE 80 0 80 -16
WIRE 560 0 560 -16
WIRE 656 0 656 -16
WIRE 288 16 288 -16
WIRE 336 16 336 -16
WIRE -112 64 -112 -16
WIRE -240 96 -240 80
WIRE 0 96 -16 96
WIRE 80 96 80 80
WIRE 80 96 64 96
WIRE 560 96 560 64
WIRE 656 96 656 80
WIRE 288 112 288 96
WIRE 336 128 336 96
WIRE 80 144 80 96
WIRE 496 144 496 -16
WIRE -208 192 -256 192
WIRE -112 192 -112 144
WIRE -112 192 -128 192
WIRE -64 192 -112 192
WIRE 240 192 224 192
WIRE -144 272 -256 272
WIRE -64 272 -80 272
WIRE 240 272 224 272
WIRE 288 272 288 208
WIRE 288 272 240 272
WIRE 288 288 288 272
WIRE -208 352 -256 352
WIRE -64 352 -128 352
WIRE 240 352 240 272
WIRE 240 352 224 352
WIRE 288 384 288 368
WIRE -240 432 -256 432
WIRE -160 432 -176 432
WIRE -64 432 -80 432
WIRE 496 432 496 224
WIRE 496 432 224 432
WIRE 496 448 496 432
WIRE 80 480 80 464
WIRE 496 544 496 528
FLAG 80 480 0
FLAG 288 384 0
FLAG -240 96 0
FLAG 336 128 0
FLAG 560 96 0
FLAG 656 96 0
FLAG -256 432 0
FLAG 656 -16 OUT
FLAG 496 544 0
FLAG -16 96 0
FLAG -240 -16 IN
FLAG -256 192 0
FLAG -256 352 0
FLAG -256 272 0
SYMBOL ind2 272 0 R0
WINDOW 0 -5 33 Right 2
WINDOW 3 -2 77 Right 2
SYMATTR InstName L1
SYMATTR Value 76µ
SYMATTR Type ind
SYMATTR SpiceLine Rser=.01 Cpar=1p
SYMBOL ind2 352 112 R180
WINDOW 0 -3 80 Right 2
WINDOW 3 -3 37 Right 2
SYMATTR InstName L2
SYMATTR Value 1µ
SYMATTR Type ind
SYMATTR SpiceLine Rser=1m Cpar=2p
SYMBOL nmos 240 112 R0
WINDOW 0 46 29 Left 2
SYMATTR InstName Q1
SYMATTR Value Si4848DY
SYMBOL res 272 272 R0
SYMATTR InstName R1
SYMATTR Value 0.068
SYMBOL res 64 -16 R0
SYMATTR InstName R2
SYMATTR Value 6.8K
SYMBOL schottky 400 0 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName D1
SYMATTR Value 1N5817
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL res 480 128 R0
SYMATTR InstName R3
SYMATTR Value 105K
SYMBOL res 480 432 R0
SYMATTR InstName R4
SYMATTR Value 20K
SYMBOL cap 544 0 R0
SYMATTR InstName C1
SYMATTR Value 300µ
SYMATTR SpiceLine Rser=10m
SYMBOL cap 64 80 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C2
SYMATTR Value 10µ
SYMBOL res -64 416 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R5
SYMATTR Value 56K
SYMBOL cap -176 416 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C3
SYMATTR Value .0047µ
SYMBOL voltage -240 -16 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 36
SYMBOL res 640 -16 R0
SYMATTR InstName Rload
SYMATTR Value 5
SYMATTR SpiceLine pwr=12
SYMBOL PowerProducts\\LTC3805 80 304 R0
SYMATTR InstName U1
SYMBOL res -128 48 R0
SYMATTR InstName R6
SYMATTR Value 100K
SYMBOL res -112 176 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R7
SYMATTR Value 10K
SYMBOL res -112 336 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R8
SYMATTR Value 118K
SYMBOL cap -80 256 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C4
SYMATTR Value .01µ
TEXT 312 -24 Bottom 2 !K1 L1 L2 1
TEXT 528 272 Left 2 !.tran 22ms startup