Version 4
SHEET 1 1700 820
WIRE 432 -128 272 -128
WIRE 768 -128 640 -128
WIRE 880 -128 768 -128
WIRE 960 -128 880 -128
WIRE 272 -112 272 -128
WIRE 432 -112 432 -128
WIRE 528 -112 432 -112
WIRE 640 -112 640 -128
WIRE 640 -112 576 -112
WIRE 768 -112 768 -128
WIRE 880 -112 880 -128
WIRE 960 -112 960 -128
WIRE 528 -96 528 -112
WIRE 576 -96 576 -112
WIRE 768 -32 768 -48
WIRE 880 -32 880 -48
WIRE 272 -16 272 -32
WIRE 528 0 528 -16
WIRE 528 0 432 0
WIRE 576 0 576 -16
WIRE 640 0 576 0
WIRE 80 16 -144 16
WIRE 208 16 80 16
WIRE 432 16 432 0
WIRE 640 16 640 0
WIRE 672 16 640 16
WIRE 768 16 736 16
WIRE 880 16 848 16
WIRE 944 16 880 16
WIRE -144 32 -144 16
WIRE 880 32 880 16
WIRE 944 32 944 16
WIRE 80 48 80 16
WIRE 208 48 208 16
WIRE 640 64 640 16
WIRE 1056 80 1008 80
WIRE -32 96 -48 96
WIRE 384 96 320 96
WIRE 880 112 880 96
WIRE -144 128 -144 112
WIRE 944 144 944 128
WIRE 944 144 688 144
WIRE 944 160 944 144
WIRE -32 176 -48 176
WIRE 432 176 432 112
WIRE 432 176 320 176
WIRE 640 176 640 160
WIRE 1056 208 1056 80
WIRE 1056 208 1008 208
WIRE -176 256 -192 256
WIRE -32 256 -112 256
WIRE 432 256 320 256
WIRE 432 272 432 256
WIRE 944 272 944 256
WIRE -128 336 -192 336
WIRE -32 336 -48 336
WIRE 368 336 320 336
WIRE 464 336 448 336
WIRE 624 336 528 336
WIRE 768 336 672 336
WIRE 896 336 832 336
WIRE 1056 336 1056 208
WIRE 1056 336 896 336
WIRE 624 352 624 336
WIRE 672 352 672 336
WIRE 896 352 896 336
WIRE 1056 352 1056 336
WIRE -176 416 -192 416
WIRE -32 416 -96 416
WIRE 336 416 320 416
WIRE 416 416 400 416
WIRE 624 448 624 432
WIRE 672 448 672 432
WIRE 896 448 896 432
WIRE 1056 448 1056 416
WIRE -128 496 -192 496
WIRE -32 496 -48 496
WIRE 480 496 320 496
WIRE 544 496 480 496
WIRE 672 496 624 496
WIRE 480 512 480 496
WIRE 672 512 672 496
WIRE -176 576 -192 576
WIRE -32 576 -96 576
WIRE 336 576 320 576
WIRE 416 576 400 576
WIRE 480 608 480 592
WIRE 672 608 672 592
WIRE 144 640 144 624
FLAG 432 272 0
FLAG 416 416 0
FLAG 640 176 0
FLAG 880 112 0
FLAG 880 -32 0
FLAG 768 -32 0
FLAG 960 -32 0
FLAG 960 -128 OUT
FLAG 1056 448 0
FLAG 896 448 0
FLAG 944 272 0
FLAG 672 448 0
FLAG 624 448 0
FLAG 672 608 0
FLAG 480 608 0
FLAG 144 640 0
FLAG 272 -16 0
FLAG -192 576 0
FLAG 416 576 0
FLAG -192 256 0
FLAG -48 176 0
FLAG -192 416 0
FLAG -192 496 0
FLAG -192 336 0
FLAG -144 128 0
SYMBOL ind2 512 0 M180
WINDOW 0 -6 71 Right 2
WINDOW 3 -2 41 Right 2
SYMATTR InstName L1
SYMATTR Value 200µ
SYMATTR Type ind
SYMATTR SpiceLine Rser=.2
SYMBOL ind2 592 -112 M0
WINDOW 0 -2 43 Right 2
WINDOW 3 0 72 Right 2
SYMATTR InstName L2
SYMATTR Value 3.125µ
SYMATTR Type ind
SYMATTR SpiceLine Rser=12m
SYMBOL ind2 656 496 R0
SYMATTR InstName L3
SYMATTR Value 50µ
SYMATTR Type ind
SYMATTR SpiceLine Rser=.215
SYMBOL nmos 384 16 R0
WINDOW 0 60 9 Left 2
WINDOW 3 61 71 Left 2
SYMATTR InstName Q1
SYMATTR Value Si4490DY
SYMBOL res 416 160 R0
SYMATTR InstName R1
SYMATTR Value .04
SYMBOL cap 400 400 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value 1500p
SYMBOL res 352 352 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R2
SYMATTR Value 330
SYMBOL cap 528 320 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C2
SYMATTR Value .1µ
SYMBOL cap 832 320 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C3
SYMATTR Value 2200p
SYMBOL res 880 336 R0
SYMATTR InstName R3
SYMATTR Value 10K
SYMBOL schottky 1040 416 M180
WINDOW 0 34 66 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D1
SYMATTR Value BAT54
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL pnp 1008 256 R180
WINDOW 0 27 91 Right 2
WINDOW 3 45 -1 Right 2
SYMATTR InstName Q2
SYMATTR Value 2N2907
SYMBOL nmos 688 64 M0
WINDOW 3 21 99 Right 2
WINDOW 0 -1 30 Right 2
SYMATTR Value Si4466DY
SYMATTR InstName Q3
SYMBOL npn 1008 32 M0
WINDOW 0 47 -6 Right 2
WINDOW 3 52 104 Right 2
SYMATTR InstName Q4
SYMATTR Value 2N2222
SYMBOL cap 864 32 R0
WINDOW 3 26 54 Left 2
SYMATTR Value 1µ
SYMATTR InstName C4
SYMBOL schottky 672 32 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName D2
SYMATTR Value BAT54
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL res 752 32 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R4
SYMATTR Value 47
SYMBOL cap 752 -112 R0
WINDOW 3 41 36 Left 2
WINDOW 40 27 64 Left 2
SYMATTR Value 150µ
SYMATTR SpiceLine2 x3
SYMATTR InstName C5
SYMBOL cap 864 -112 R0
SYMATTR InstName C8
SYMATTR Value 1µ
SYMBOL res 464 496 R0
SYMATTR InstName R7
SYMATTR Value 3.4K
SYMBOL res 640 480 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R8
SYMATTR Value 33.8K
SYMBOL ind2 608 448 M180
WINDOW 0 -1 82 Right 2
WINDOW 3 -5 38 Right 2
SYMATTR InstName L4
SYMATTR Value 1500µ
SYMATTR Type ind
SYMATTR SpiceLine Rser=1.5
SYMBOL ind2 688 448 R180
WINDOW 0 -7 80 Right 2
WINDOW 3 -4 43 Right 2
SYMATTR InstName L5
SYMATTR Value 1500µ
SYMATTR Type ind
SYMATTR SpiceLine Rser=1.5
SYMBOL voltage 272 -128 R0
SYMATTR InstName V1
SYMATTR Value 48
SYMBOL res -80 560 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R9
SYMATTR Value 1.225K
SYMBOL cap 336 592 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName C9
SYMATTR Value .1µ
SYMBOL cap -112 240 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C10
SYMATTR Value 47p
SYMBOL res -80 400 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R10
SYMATTR Value 51K
SYMBOL res -32 480 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R11
SYMATTR Value 100K
SYMBOL res -32 320 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R12
SYMATTR Value 50K
SYMBOL voltage -144 16 R0
SYMATTR InstName V2
SYMATTR Value 16
SYMBOL res 944 -128 R0
SYMATTR InstName Rload
SYMATTR Value 1
SYMBOL LT3825 144 336 R0
SYMATTR InstName U1
TEXT 552 -112 Bottom 2 !K1 L1 L2 L3 1
TEXT 648 336 Bottom 2 !K2 L4 L5 1
TEXT 808 544 Left 2 !.tran 1m startup