Version 4
SHEET 1 1244 820
WIRE -64 0 -256 0
WIRE 416 0 -64 0
WIRE -256 16 -256 0
WIRE -64 48 -64 0
WIRE -32 48 -64 48
WIRE 496 48 288 48
WIRE 672 48 496 48
WIRE 672 64 672 48
WIRE -256 112 -256 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 496 128 496 48
WIRE 672 160 672 144
WIRE -224 208 -288 208
WIRE -112 208 -144 208
WIRE -32 208 -112 208
WIRE 448 208 288 208
WIRE 320 224 320 128
WIRE -384 288 -400 288
WIRE -288 288 -288 272
WIRE -288 288 -304 288
WIRE -112 288 -112 272
WIRE -112 288 -288 288
WIRE -32 288 -112 288
WIRE 320 288 288 288
WIRE 496 288 496 224
WIRE 496 288 320 288
WIRE 528 288 496 288
WIRE 656 288 608 288
WIRE 720 288 656 288
WIRE 816 288 720 288
WIRE 720 304 720 288
WIRE 816 304 816 288
WIRE -144 368 -160 368
WIRE -32 368 -64 368
WIRE 416 368 416 128
WIRE 416 368 288 368
WIRE 496 400 496 288
WIRE 528 400 496 400
WIRE 608 400 592 400
WIRE 720 400 720 368
WIRE 816 400 816 384
WIRE -32 448 -64 448
WIRE 416 448 416 368
WIRE 416 448 288 448
WIRE 496 448 496 400
WIRE -144 528 -160 528
WIRE -32 528 -80 528
WIRE 448 528 288 528
WIRE 656 544 656 288
WIRE 752 544 656 544
WIRE 496 560 496 544
WIRE 656 576 656 544
WIRE 752 576 752 544
WIRE -32 608 -64 608
WIRE 320 608 288 608
WIRE -288 688 -288 288
WIRE 656 688 656 656
WIRE 656 688 -288 688
WIRE 752 688 752 640
WIRE 752 688 656 688
FLAG 672 160 0
FLAG 496 560 0
FLAG 320 608 0
FLAG -64 608 0
FLAG -256 112 0
FLAG 720 400 0
FLAG 816 400 0
FLAG -160 368 0
FLAG -160 128 0
FLAG -160 528 0
FLAG 608 400 0
FLAG 816 288 OUT
FLAG -64 448 0
FLAG -400 288 0
FLAG 672 48 IN
SYMBOL nmos 448 128 R0
SYMATTR InstName Q1
SYMATTR Value Si7850DP
SYMBOL nmos 448 448 R0
SYMATTR InstName Q2
SYMATTR Value Si7850DP
SYMBOL voltage -256 0 R0
WINDOW 0 29 24 Left 2
SYMATTR InstName V1
SYMATTR Value 5
SYMBOL voltage 672 48 R0
SYMATTR InstName V2
SYMATTR Value 33
SYMBOL ind 512 304 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L1
SYMATTR Value 8µ
SYMBOL cap 704 304 R0
SYMATTR Value 270µ
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 12K
SYMBOL res -48 112 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 30K
SYMBOL res -128 192 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 10K
SYMBOL cap -304 208 R0
WINDOW 0 30 21 Left 2
WINDOW 3 28 56 Left 2
SYMATTR InstName C2
SYMATTR Value 1000p
SYMBOL cap -80 512 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C3
SYMATTR Value .001µ
SYMBOL cap 304 224 R0
WINDOW 0 30 5 Left 2
WINDOW 3 37 44 Left 2
SYMATTR InstName C4
SYMATTR Value .1µ
SYMBOL schottky 592 416 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 cap -128 208 R0
WINDOW 0 35 21 Left 2
WINDOW 3 28 56 Left 2
SYMATTR InstName C5
SYMATTR Value 470p
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 PowerProducts\\LTC3703-5 128 336 R0
SYMATTR InstName U1
SYMBOL res 640 672 M180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R4
SYMATTR Value 113K
SYMBOL cap 736 576 R0
WINDOW 39 24 92 Left 2
SYMATTR SpiceLine Rser=100
SYMATTR InstName C6
SYMATTR Value 2200p
SYMBOL res -288 272 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R5
SYMATTR Value 21.5K
SYMBOL res 800 288 R0
SYMATTR InstName Rload
SYMATTR Value 1
TEXT 704 480 Left 2 !.tran 2m startup