Version 4
SHEET 1 1244 820
WIRE -64 0 -224 0
WIRE 416 0 -64 0
WIRE -224 16 -224 0
WIRE -64 48 -64 0
WIRE -32 48 -64 48
WIRE 512 48 288 48
WIRE 640 48 512 48
WIRE 640 64 640 48
WIRE -224 112 -224 96
WIRE -144 128 -160 128
WIRE -32 128 -64 128
WIRE 320 128 288 128
WIRE 336 128 320 128
WIRE 416 128 416 0
WIRE 416 128 400 128
WIRE 512 128 512 48
WIRE 640 160 640 144
WIRE -240 208 -304 208
WIRE -128 208 -160 208
WIRE -32 208 -128 208
WIRE 464 208 288 208
WIRE 320 224 320 128
WIRE -304 288 -304 272
WIRE -128 288 -128 272
WIRE -128 288 -304 288
WIRE -32 288 -128 288
WIRE 320 288 288 288
WIRE 512 288 512 224
WIRE 512 288 320 288
WIRE 544 288 512 288
WIRE 672 288 624 288
WIRE 768 288 672 288
WIRE 864 288 768 288
WIRE 976 288 864 288
WIRE 672 304 672 288
WIRE 864 304 864 288
WIRE 976 304 976 288
WIRE -144 368 -160 368
WIRE -32 368 -64 368
WIRE 416 368 416 128
WIRE 416 368 288 368
WIRE 768 384 768 288
WIRE 512 400 512 288
WIRE 544 400 512 400
WIRE 624 400 608 400
WIRE 864 400 864 368
WIRE 976 400 976 384
WIRE 672 416 672 384
WIRE -32 448 -64 448
WIRE 416 448 416 368
WIRE 416 448 288 448
WIRE 512 448 512 400
WIRE 672 496 672 480
WIRE 768 496 768 464
WIRE 768 496 672 496
WIRE 768 512 768 496
WIRE -144 528 -160 528
WIRE -32 528 -80 528
WIRE 464 528 288 528
WIRE 512 560 512 544
WIRE -32 608 -64 608
WIRE 320 608 288 608
WIRE 768 608 768 592
WIRE -304 656 -304 288
WIRE 672 656 672 496
WIRE 672 656 -304 656
FLAG 640 160 0
FLAG 512 560 0
FLAG 320 608 0
FLAG -64 608 0
FLAG -224 112 0
FLAG 864 400 0
FLAG 976 400 0
FLAG -160 368 0
FLAG -160 128 0
FLAG -160 528 0
FLAG 624 400 0
FLAG 768 608 0
FLAG 976 288 OUT
FLAG -64 448 0
FLAG 640 48 IN
SYMBOL PowerProducts\\LTC3703 128 336 R0
SYMATTR InstName U1
SYMBOL nmos 464 128 R0
SYMATTR InstName Q1
SYMATTR Value FDS6680A
SYMBOL nmos 464 448 R0
SYMATTR InstName Q2
SYMATTR Value FDS6680A
SYMBOL voltage -224 0 R0
WINDOW 0 29 24 Left 2
SYMATTR InstName V1
SYMATTR Value 10
SYMBOL voltage 640 48 R0
SYMATTR InstName V2
SYMATTR Value 15
SYMBOL ind 528 304 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L1
SYMATTR Value 10µ
SYMBOL cap 848 304 R0
WINDOW 3 39 33 Left 2
WINDOW 123 28 60 Left 2
SYMATTR Value 270µ
SYMATTR Value2 x2
SYMATTR SpiceLine Rser=10m
SYMATTR InstName C1
SYMBOL res -48 352 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 10K
SYMBOL res -48 112 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 25K
SYMBOL res -144 192 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 100K
SYMBOL cap -320 208 R0
WINDOW 0 30 21 Left 2
WINDOW 3 28 56 Left 2
SYMATTR InstName C2
SYMATTR Value 2200p
SYMBOL res 752 368 R0
SYMATTR InstName R4
SYMATTR Value 113K
SYMBOL res 656 288 R0
SYMATTR InstName R5
SYMATTR Value 100
SYMBOL cap 656 416 R0
WINDOW 0 29 12 Left 2
WINDOW 3 28 56 Left 2
SYMATTR InstName C3
SYMATTR Value 2200p
SYMBOL cap -80 512 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C4
SYMATTR Value .001µ
SYMBOL cap 304 224 R0
WINDOW 0 30 5 Left 2
WINDOW 3 37 44 Left 2
SYMATTR InstName C5
SYMATTR Value .1µ
SYMBOL schottky 608 416 M270
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 752 496 R0
SYMATTR InstName R6
SYMATTR Value 8.06K
SYMBOL cap -144 208 R0
WINDOW 0 35 21 Left 2
WINDOW 3 28 56 Left 2
SYMATTR InstName C6
SYMATTR Value 1000p
SYMBOL schottky 400 144 M270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName D2
SYMATTR Value 1N5817
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL res 960 288 R0
SYMATTR InstName Rload
SYMATTR Value 2.4
TEXT 744 664 Left 2 !.tran 2m startup