Version 4
SHEET 1 1060 704
WIRE -112 32 -208 32
WIRE 144 32 -112 32
WIRE 304 32 144 32
WIRE 384 32 304 32
WIRE 480 32 384 32
WIRE -208 48 -208 32
WIRE 144 48 144 32
WIRE 480 48 480 32
WIRE -112 80 -112 32
WIRE -96 80 -112 80
WIRE 0 80 -16 80
WIRE 304 80 304 32
WIRE 304 80 288 80
WIRE 384 80 384 32
WIRE 384 128 384 80
WIRE -208 144 -208 128
WIRE 0 144 -208 144
WIRE 320 144 320 80
WIRE 320 144 288 144
WIRE 480 144 480 128
WIRE -208 160 -208 144
WIRE 0 208 -16 208
WIRE 336 208 288 208
WIRE -208 240 -208 224
WIRE -112 272 -112 80
WIRE 0 272 -112 272
WIRE 384 272 384 224
WIRE 384 272 288 272
WIRE 400 272 384 272
WIRE 512 272 480 272
WIRE 560 272 512 272
WIRE 656 272 560 272
WIRE 560 288 560 272
WIRE 656 288 656 272
WIRE 384 304 384 272
WIRE 384 304 320 304
WIRE 384 320 384 304
WIRE -112 336 -112 272
WIRE 0 336 -112 336
WIRE 320 336 320 304
WIRE 320 336 288 336
WIRE 560 384 560 352
WIRE 656 384 656 368
WIRE -160 400 -192 400
WIRE 0 400 -16 400
WIRE 336 400 288 400
WIRE 0 464 -48 464
WIRE 384 464 384 416
WIRE 384 464 288 464
WIRE 384 480 384 464
WIRE 80 528 80 512
WIRE 208 528 208 512
WIRE -144 560 -160 560
WIRE -48 560 -48 464
WIRE -48 560 -64 560
WIRE 288 560 -48 560
WIRE 512 560 512 272
WIRE 512 560 368 560
FLAG -192 400 0
FLAG 80 528 0
FLAG 208 528 0
FLAG 384 480 0
FLAG 560 384 0
FLAG -160 560 0
FLAG 480 144 0
FLAG -208 240 0
FLAG 480 32 IN
FLAG 656 272 OUT
FLAG 656 384 0
SYMBOL PowerProducts\\LT3740 144 272 R0
SYMATTR InstName U1
SYMBOL ind -112 96 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L1
SYMATTR Value 22µ
SYMATTR SpiceLine Rpar=5K
SYMBOL res 384 576 M270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R1
SYMATTR Value 21K
SYMBOL cap -16 384 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value 100p
SYMBOL nmos 336 320 R0
SYMATTR InstName Q1
SYMATTR Value Si4840DY
SYMBOL nmos 336 128 R0
SYMATTR InstName Q2
SYMATTR Value Si4840DY
SYMBOL cap 384 64 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C2
SYMATTR Value 1µ
SYMBOL voltage 480 32 R0
SYMATTR InstName V1
SYMATTR Value 6
SYMBOL ind 384 288 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L2
SYMATTR Value 2µ
SYMBOL cap 544 288 R0
SYMATTR InstName C3
SYMATTR Value 800µ
SYMATTR SpiceLine Rser=.01
SYMBOL res -48 576 M270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R2
SYMATTR Value 10K
SYMBOL res -64 416 M270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R3
SYMATTR Value 100K
SYMBOL cap -224 160 R0
SYMATTR InstName C4
SYMATTR Value .02µ
SYMBOL res -224 32 R0
SYMATTR InstName R4
SYMATTR Value 150K
SYMBOL res 640 272 R0
SYMATTR InstName Rload
SYMATTR Value .2
TEXT 528 528 Left 2 !.tran 1.2m startup