Version 4
SHEET 1 2136 1012
WIRE -240 -224 -368 -224
WIRE 96 -224 -96 -224
WIRE 288 -224 96 -224
WIRE 448 -224 288 -224
WIRE 656 -224 528 -224
WIRE 720 -224 656 -224
WIRE 816 -224 720 -224
WIRE -368 -208 -368 -224
WIRE -240 -208 -240 -224
WIRE -192 -208 -240 -208
WIRE -96 -208 -96 -224
WIRE -96 -208 -144 -208
WIRE 288 -208 288 -224
WIRE 720 -208 720 -224
WIRE 816 -208 816 -224
WIRE -192 -128 -240 -128
WIRE -96 -128 -144 -128
WIRE 240 -128 224 -128
WIRE -368 -112 -368 -128
WIRE -240 -112 -240 -128
WIRE -96 -112 -96 -128
WIRE 720 -112 720 -144
WIRE 816 -112 816 -128
WIRE 288 -96 288 -112
WIRE 496 -80 352 -80
WIRE 496 -64 496 -80
WIRE -288 -32 -320 -32
WIRE -32 -32 -48 -32
WIRE -240 0 -240 -16
WIRE -240 0 -288 0
WIRE -96 0 -96 -16
WIRE -240 16 -240 0
WIRE -32 32 -32 -32
WIRE 96 32 96 -224
WIRE 224 32 224 -128
WIRE 352 32 352 -80
WIRE 496 32 496 16
WIRE 656 48 656 -224
WIRE -240 112 -240 96
WIRE -112 112 -144 112
WIRE 464 112 432 112
WIRE 576 112 544 112
WIRE -288 176 -288 0
WIRE -112 176 -288 176
WIRE 656 176 656 128
WIRE 656 176 432 176
WIRE 656 192 656 176
WIRE -320 240 -320 -32
WIRE -112 240 -320 240
WIRE 544 240 432 240
WIRE 544 256 544 240
WIRE 656 288 656 272
WIRE -112 304 -128 304
WIRE 464 304 432 304
WIRE 464 320 464 304
WIRE 544 352 544 320
WIRE -32 400 -32 384
WIRE 96 400 96 384
WIRE 224 400 224 384
WIRE 352 400 352 384
WIRE 464 400 464 384
WIRE 352 496 352 480
FLAG 96 400 0
FLAG -32 400 0
FLAG 224 400 0
FLAG 352 496 0
FLAG 464 400 0
FLAG 544 352 0
FLAG -240 112 0
FLAG -144 112 0
FLAG -368 -112 0
FLAG -96 0 0
FLAG 288 -96 0
FLAG 720 -112 0
FLAG 816 -112 0
FLAG 576 112 0
FLAG 656 288 0
FLAG 496 32 0
FLAG 816 -224 OUT
FLAG -368 -224 IN
SYMBOL PowerProducts\\LTC3726 160 208 R0
SYMATTR InstName U1
SYMBOL res 336 384 R0
SYMATTR InstName R1
SYMATTR Value 100K
SYMBOL cap 448 320 R0
SYMATTR InstName C1
SYMATTR Value .0025µ
SYMBOL cap 528 256 R0
WINDOW 3 37 33 Left 2
WINDOW 39 25 67 Left 2
SYMATTR Value 330p
SYMATTR SpiceLine Rser=24K
SYMATTR InstName C2
SYMBOL ind2 -208 -224 R0
WINDOW 0 -1 34 Right 2
WINDOW 3 -3 72 Right 2
SYMATTR InstName L1
SYMATTR Value 490µ
SYMATTR Type ind
SYMATTR SpiceLine Rpar=10K
SYMBOL ind2 -128 -224 M0
WINDOW 0 -7 36 Right 2
WINDOW 3 -7 73 Right 2
SYMATTR InstName L2
SYMATTR Value 40µ
SYMATTR Type ind
SYMATTR SpiceLine Rpar=2K
SYMBOL nmos -288 -112 R0
WINDOW 0 55 33 Left 2
WINDOW 3 52 59 Left 2
SYMATTR InstName Q1
SYMATTR Value Si4484EY
SYMBOL res -256 0 R0
SYMATTR InstName R2
SYMATTR Value 20m
SYMBOL voltage -368 -224 R0
SYMATTR InstName V1
SYMATTR Value 36
SYMBOL voltage 496 -80 R0
SYMATTR Value 7.5
SYMATTR InstName V2
SYMBOL ind 432 -208 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L3
SYMATTR Value 1.5µ
SYMATTR SpiceLine Rpar=2K
SYMBOL cap 704 -208 R0
SYMATTR InstName C3
SYMATTR Value 330µ
SYMBOL res 448 128 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R6
SYMATTR Value 100K
SYMBOL res 640 32 R0
SYMATTR InstName R7
SYMATTR Value 110K
SYMBOL res 640 176 R0
SYMATTR InstName R8
SYMATTR Value 24.9K
SYMBOL nmos -48 -112 M0
WINDOW 0 -6 33 Right 2
WINDOW 3 -4 60 Right 2
SYMATTR InstName Q5
SYMATTR Value Si4490DY
SYMBOL nmos 240 -208 R0
WINDOW 0 61 23 Left 2
WINDOW 3 57 90 Left 2
SYMATTR InstName Q6
SYMATTR Value Si4490DY
SYMBOL res 800 -224 R0
SYMATTR InstName Rload
SYMATTR Value 1
TEXT -168 -208 Bottom 2 !K1 L1 L2 1
TEXT 624 424 Left 2 !.tran 1m startup