Version 4
SHEET 1 1520 700
WIRE 0 -128 -176 -128
WIRE 192 -128 0 -128
WIRE 240 -128 192 -128
WIRE 320 -128 240 -128
WIRE 496 -128 320 -128
WIRE 624 -128 544 -128
WIRE 752 -128 688 -128
WIRE 864 -128 752 -128
WIRE 240 -112 240 -128
WIRE 320 -112 320 -128
WIRE 496 -112 496 -128
WIRE 544 -112 544 -128
WIRE 752 -112 752 -128
WIRE 864 -112 864 -128
WIRE -176 -96 -176 -128
WIRE 0 -96 0 -128
WIRE 240 -16 240 -48
WIRE 320 -16 320 -32
WIRE 320 -16 240 -16
WIRE 368 -16 320 -16
WIRE 496 -16 496 -32
WIRE 496 -16 432 -16
WIRE 544 -16 544 -32
WIRE 752 -16 752 -48
WIRE 864 -16 864 -32
WIRE -176 16 -176 -16
WIRE 192 32 192 -128
WIRE -96 96 -160 96
WIRE 0 96 0 -16
WIRE 0 96 -16 96
WIRE 32 96 0 96
WIRE 384 96 352 96
WIRE 496 96 496 -16
WIRE 496 96 464 96
WIRE -144 176 -160 176
WIRE 32 176 -64 176
WIRE 496 176 496 96
WIRE 496 176 352 176
WIRE -96 256 -160 256
WIRE 32 256 -16 256
WIRE 368 256 352 256
WIRE 464 256 448 256
WIRE -144 336 -160 336
WIRE -48 336 -64 336
WIRE 32 336 16 336
WIRE 368 336 352 336
WIRE 464 336 432 336
WIRE 128 416 128 400
WIRE 256 416 256 400
WIRE 128 496 128 480
FLAG 256 416 0
FLAG 128 496 0
FLAG -160 336 0
FLAG -160 176 0
FLAG -160 256 0
FLAG -176 16 0
FLAG 464 336 0
FLAG 464 256 0
FLAG 752 -16 0
FLAG 544 -16 0
FLAG 864 -16 0
FLAG -176 -128 IN
FLAG 864 -128 OUT
FLAG -160 96 0
SYMBOL PowerProducts\\LT3573 192 208 R0
SYMATTR InstName U1
SYMBOL res 0 240 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 10K
SYMBOL res -48 160 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 28.7K
SYMBOL voltage -176 -112 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 24
SYMBOL cap 16 320 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value .001µ
SYMBOL cap 432 320 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C2
SYMATTR Value 4.7µ
SYMBOL res 480 80 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 80.6K
SYMBOL res 464 240 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R4
SYMATTR Value 6.04K
SYMBOL ind2 480 -128 R0
WINDOW 0 0 38 Right 2
WINDOW 3 0 70 Right 2
SYMATTR InstName L1
SYMATTR Value 24µ
SYMATTR Type ind
SYMATTR SpiceLine Rser=0.082 Rpar=10K
SYMBOL ind2 560 -16 R180
WINDOW 0 3 79 Right 2
WINDOW 3 1 44 Right 2
SYMATTR InstName L2
SYMATTR Value 2.6µ
SYMATTR Type ind
SYMATTR SpiceLine Rser=0.011 Rpar=1K
SYMBOL cap 736 -112 R0
SYMATTR InstName C3
SYMATTR Value 47µ
SYMBOL schottky 624 -112 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName D1
SYMATTR Value MBRS340
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL res -48 320 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R5
SYMATTR Value 50K
SYMBOL cap 112 480 M180
WINDOW 0 42 46 Left 2
WINDOW 3 41 18 Left 2
SYMATTR InstName C4
SYMATTR Value .001µ
SYMBOL res -16 -112 R0
SYMATTR Value 357K
SYMATTR InstName R6
SYMBOL res 0 80 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R7
SYMATTR Value 51.1K
SYMBOL res 304 -128 R0
SYMATTR InstName R8
SYMATTR Value 2K
SYMBOL cap 224 -112 R0
SYMATTR InstName C5
SYMATTR Value .22µ
SYMBOL schottky 432 0 M270
WINDOW 0 32 32 VTop 2
WINDOW 3 -3 35 VBottom 2
SYMATTR InstName D2
SYMATTR Value PMEG6010AED
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL res 848 -128 R0
SYMATTR Value 1000
SYMATTR InstName Rload
TEXT 520 -128 Bottom 2 !K1 L1 L2 .995
TEXT 600 384 Left 2 !.tran 100m startup
TEXT 320 -176 Bottom 2 ;LT3573 - Isolated Flyback Converter Without an Opto-Coupler \nInput: 24V       Output: 5V @ 1A
TEXT -280 512 Left 2 ;Note:\n  If the simulation model is not found please update with the "Sync Release" command from the "Tools" menu.\n  It remains the customer's responsibility to verify proper and reliable operation in the actual application.\n  Component substitution and printed circuit board layout may significantly affect circuit performance or reliability.\n  Contact your local sales representative for assistance. This circuit is distributed to customers only for use with LTC parts.\n  Copyright © 2009 Linear Technology Inc. All rights reserved.