Version 4
SHEET 1 1260 692
WIRE -32 -80 -128 -80
WIRE 304 -80 -32 -80
WIRE -128 -64 -128 -80
WIRE 208 -64 112 -64
WIRE 560 -64 208 -64
WIRE 688 -64 560 -64
WIRE 784 -64 688 -64
WIRE -32 -48 -32 -80
WIRE 208 -48 208 -64
WIRE 784 -48 784 -64
WIRE -128 32 -128 16
WIRE 560 32 560 -64
WIRE 112 48 112 -64
WIRE 208 48 208 32
WIRE 304 48 304 -80
WIRE 688 48 688 -64
WIRE 784 48 784 32
WIRE 32 112 0 112
WIRE 512 112 384 112
WIRE -32 176 -32 32
WIRE 32 176 -32 176
WIRE 416 176 384 176
WIRE 560 176 560 128
WIRE 560 176 416 176
WIRE 688 176 688 112
WIRE 688 176 560 176
WIRE 32 240 0 240
WIRE 416 240 384 240
WIRE 560 272 560 176
WIRE 624 272 560 272
WIRE 800 272 704 272
WIRE 864 272 800 272
WIRE -144 304 -160 304
WIRE -64 304 -80 304
WIRE 32 304 16 304
WIRE 416 304 384 304
WIRE 864 304 864 272
WIRE 416 368 416 304
WIRE 416 368 384 368
WIRE 864 384 864 368
WIRE 560 400 560 272
WIRE 560 400 480 400
WIRE 688 400 560 400
WIRE 560 416 560 400
WIRE -48 432 -64 432
WIRE 32 432 16 432
WIRE 480 432 480 400
WIRE 480 432 384 432
WIRE 688 432 688 400
WIRE 32 496 16 496
WIRE 512 496 384 496
WIRE 32 560 -16 560
WIRE 560 560 560 512
WIRE 560 560 384 560
WIRE 688 560 688 496
WIRE 688 560 560 560
WIRE 560 576 560 560
WIRE 128 640 128 624
WIRE 288 640 288 624
WIRE -16 672 -16 560
WIRE 800 672 800 272
WIRE 800 672 -16 672
FLAG 560 576 0
FLAG 288 640 0
FLAG 128 640 0
FLAG 864 384 0
FLAG -64 432 0
FLAG 784 48 0
FLAG -128 32 0
FLAG 16 496 0
FLAG -160 304 0
FLAG 864 272 OUT
SYMBOL PowerProducts\\LTC3717-1 208 336 R0
SYMATTR InstName U1
SYMBOL nmos 512 32 R0
SYMATTR InstName Q1
SYMATTR Value Si7866DP
SYMBOL nmos 512 416 R0
SYMATTR InstName Q2
SYMATTR Value Si7866DP
SYMBOL res 192 -64 R0
SYMATTR InstName R1
SYMATTR Value 715K
SYMBOL schottky 400 304 M180
WINDOW 0 38 47 Left 2
WINDOW 3 41 15 Left 2
SYMATTR InstName D1
SYMATTR Value 1N5817
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL cap 400 240 M180
WINDOW 0 46 44 Left 2
WINDOW 3 46 18 Left 2
SYMATTR InstName C1
SYMATTR Value .22µ
SYMBOL ind 608 288 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L1
SYMATTR Value 0.68µ
SYMBOL cap 848 304 R0
WINDOW 123 35 60 Left 2
WINDOW 3 38 30 Left 2
SYMATTR Value2 x2
SYMATTR Value 180µ
SYMATTR SpiceLine Rser=.05
SYMATTR InstName C2
SYMBOL res 32 288 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 2K
SYMBOL cap -80 288 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C3
SYMATTR Value 4700p
SYMBOL cap 16 416 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C4
SYMATTR Value .001µ
SYMBOL voltage 784 -64 R0
SYMATTR InstName V1
SYMATTR Value 15
SYMBOL voltage -128 -80 R0
WINDOW 0 23 25 Left 2
WINDOW 3 30 90 Left 2
SYMATTR InstName V2
SYMATTR Value 2.5
SYMBOL res -48 -64 R0
SYMATTR InstName R3
SYMATTR Value 100K
SYMBOL schottky 672 112 M180
WINDOW 0 24 72 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D2
SYMATTR Value 1N5817
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL schottky 672 496 M180
WINDOW 0 24 72 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D3
SYMATTR Value 1N5817
SYMATTR Description Diode
SYMATTR Type diode
TEXT 568 632 Left 2 !.tran 2m startup