* Z:\home\khalils\Downloads\files\data\raw_asc\LT1243.asc
* Generated by LTspice 26.0.1 for Windows.
* Library below included based on ModelFile attribute of instance XU1 (C:\users\khalils\AppData\Local\LTspice\lib\sym\PowerProducts\LT1243.asy)
R5 N017 N016 1K
C3 N014 N013 .01
C2 N015 0 .1
L1 N001 0 20 Rser=.05
C7 IN N003 470p
R7 N006 N010 125K
R13 IN N004 400K
L3 N005 IN 100 Rser=.05
R8 N009 N004 39
R1 N017 0 .67
R12 N008 N007 510
D1 N007 N006 BAT54
R10 IN N003 660K
C1 N018 0 220p
R2 N013 N010 200K
L4 N002 OUT 1
D4 0 N004 BZX84C15L
C9 N016 0 25p
L2 N008 0 16 Rser=.1
C5 N007 0 100p
R11 OUT 0 750
R4 N010 0 20K
C4 N006 0 .0022
I1 0 N004 pwl(0 0 50u 7 100u 0)
C8 OUT 0 3.3
R6 N012 N011 10
R9 IN N016 1.32Meg
C10 N002 0 10 Rser=.1
D2 N008 N009 BAT54
C6 N004 0 22
D5 N005 N003 MURS320
K1 L1 L2 L3 1
MQ1 N005 N012 N017 N017 BSC42DN25NS3
V1 IN 0 200
R3 N015 N018 12K
D3 N001 N002 MBRS340
XU1 N014 N010 N016 N018 0 N011 N004 N015 LT1243 ;pnba COMP)FB)Isense)Rt/Ct)GND)Output)Vcc)Vref
Rload OUT 0 25
.model D D
.lib C:\users\khalils\AppData\Local\LTspice\lib\cmp\standard.dio
.model NMOS NMOS
.model PMOS PMOS
.lib C:\users\khalils\AppData\Local\LTspice\lib\cmp\standard.mos
.tran 1m startup
.lib LT1243.sub
.backanno
.end

* LTspice schematic (.asc):
Version 4
SHEET 1 5945676 13421556
WIRE 2176 -112 1888 -112
WIRE 2368 -112 2176 -112
WIRE 2544 -112 2368 -112
WIRE 2656 -112 2544 -112
WIRE 2800 -112 2656 -112
WIRE 1888 -96 1888 -112
WIRE 2176 -80 2176 -112
WIRE 2544 -80 2544 -112
WIRE 2656 -80 2656 -112
WIRE 2368 -48 2368 -112
WIRE 2800 -32 2800 -112
WIRE 2848 -32 2800 -32
WIRE 3008 -32 2912 -32
WIRE 3120 -32 3072 -32
WIRE 3168 -32 3120 -32
WIRE 3296 -32 3248 -32
WIRE 3424 -32 3296 -32
WIRE 3568 -32 3424 -32
WIRE 2848 -16 2848 -32
WIRE 2912 -16 2912 -32
WIRE 3120 -16 3120 -32
WIRE 3296 -16 3296 -32
WIRE 3424 -16 3424 -32
WIRE 3568 -16 3568 -32
WIRE 1888 0 1888 -16
WIRE 2544 16 2544 -16
WIRE 2656 16 2656 0
WIRE 2656 16 2544 16
WIRE 2656 32 2656 16
WIRE 1984 80 1920 80
WIRE 2176 80 2176 0
WIRE 2176 80 2064 80
WIRE 2224 80 2176 80
WIRE 2320 80 2288 80
WIRE 2848 80 2848 64
WIRE 2848 80 2800 80
WIRE 2912 80 2912 64
WIRE 3120 80 3120 48
WIRE 3120 80 2912 80
WIRE 3296 80 3296 48
WIRE 3296 80 3120 80
WIRE 3424 80 3424 64
WIRE 3424 80 3296 80
WIRE 3568 80 3568 64
WIRE 3568 80 3424 80
WIRE 3568 112 3568 80
WIRE 2656 128 2656 96
WIRE 2800 128 2800 80
WIRE 2800 128 2656 128
WIRE 1744 208 1648 208
WIRE 1840 208 1744 208
WIRE 1968 208 1904 208
WIRE 2048 208 1968 208
WIRE 2624 208 2128 208
WIRE 2848 208 2624 208
WIRE 1744 224 1744 208
WIRE 1968 224 1968 208
WIRE 2848 224 2848 208
WIRE 2176 272 2176 80
WIRE 2400 272 2176 272
WIRE 2448 272 2400 272
WIRE 2544 272 2528 272
WIRE 2624 272 2624 208
WIRE 2624 272 2608 272
WIRE 2400 288 2400 272
WIRE 1648 304 1648 208
WIRE 1744 320 1744 288
WIRE 1968 320 1968 288
WIRE 2848 320 2848 304
WIRE 2176 336 2176 272
WIRE 2656 352 2656 128
WIRE 2400 368 2400 352
WIRE 1648 400 1648 384
WIRE 2016 400 1648 400
WIRE 2464 432 2336 432
WIRE 2608 432 2544 432
WIRE 1648 464 1648 400
WIRE 1776 464 1648 464
WIRE 1904 464 1856 464
WIRE 2016 464 1968 464
WIRE 1648 480 1648 464
WIRE 1872 528 1760 528
WIRE 2016 528 1872 528
WIRE 1760 544 1760 528
WIRE 1872 544 1872 528
WIRE 2368 560 2368 32
WIRE 2368 560 2336 560
WIRE 2480 560 2368 560
WIRE 2656 560 2656 448
WIRE 2656 560 2560 560
WIRE 1648 576 1648 560
WIRE 2368 576 2368 560
WIRE 2656 576 2656 560
WIRE 2016 592 1968 592
WIRE 1872 624 1872 608
WIRE 1760 656 1760 624
WIRE 1968 656 1968 592
WIRE 1968 656 1760 656
WIRE 2368 656 2368 640
WIRE 1760 672 1760 656
WIRE 2656 672 2656 656
WIRE 2176 704 2176 656
WIRE 1760 752 1760 736
LINE Normal 2880 288 2880 -16 2
SYMBOL res 3408 -32 R0
SYMATTR InstName R11
SYMATTR Value 750
SYMBOL cap 2384 288 R0
SYMATTR InstName C6
SYMATTR Value 22
SYMBOL cap 1856 544 R0
SYMATTR InstName C2
SYMATTR Value .1
SYMBOL res 1872 448 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 200K
SYMBOL RES 2640 560 R0
SYMATTR InstName R1
SYMATTR Value .67
SYMBOL res 2352 -64 R0
SYMATTR InstName R9
SYMATTR Value 1.32Meg
SYMBOL ind2 2928 -32 M0
WINDOW 0 1 32 Right 2
WINDOW 3 -2 69 Right 2
SYMATTR InstName L1
SYMATTR Value 20
SYMATTR SpiceLine Rser=.05
SYMBOL ind 3152 -16 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L4
SYMATTR Value 1
SYMBOL VOLTAGE 1888 -112 R0
SYMATTR InstName V1
SYMATTR Value 200
SYMBOL polcap 3280 -16 R0
SYMATTR InstName C8
SYMATTR Value 3.3
SYMBOL NMOS 2608 352 R0
SYMATTR InstName Q1
SYMATTR Value BSC42DN25NS3
SYMBOL res 2560 416 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R6
SYMATTR Value 10
SYMBOL res 2544 256 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R8
SYMATTR Value 39
SYMBOL zener 2288 96 M270
WINDOW 0 36 32 VTop 2
WINDOW 3 -4 32 VBottom 2
SYMATTR InstName D4
SYMATTR Value BZX84C15L
SYMBOL cap 2528 -80 R0
SYMATTR InstName C7
SYMATTR Value 470p
SYMBOL res 2160 -96 R0
SYMATTR InstName R13
SYMATTR Value 400K
SYMBOL schottky 3008 -48 M90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D3
SYMATTR Value MBRS340
SYMBOL PowerProducts\\LT1243 2176 496 R0
SYMATTR InstName U1
SYMBOL res 2576 544 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R5
SYMATTR Value 1K
SYMBOL cap 2352 576 R0
SYMATTR InstName C9
SYMATTR Value 25p
SYMBOL schottky 2608 256 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D2
SYMATTR Value BAT54
SYMBOL ind2 2832 80 M180
WINDOW 0 -2 79 Right 2
WINDOW 3 -2 44 Right 2
SYMATTR InstName L3
SYMATTR Value 100
SYMATTR SpiceLine Rser=.05
SYMBOL cap 1952 224 R0
SYMATTR InstName C5
SYMATTR Value 100p
SYMBOL ind2 2832 208 R0
WINDOW 0 -3 43 Right 2
WINDOW 3 -4 70 Right 2
SYMATTR InstName L2
SYMATTR Value 16
SYMATTR Value2 Rser=.1
SYMBOL res 1632 464 R0
SYMATTR InstName R4
SYMATTR Value 20K
SYMBOL current 1984 80 R270
WINDOW 0 32 40 VTop 2
WINDOW 3 -32 40 VBottom 2
SYMATTR InstName I1
SYMATTR Value pwl(0 0 50u 7 100u 0)
SYMBOL res 3552 -32 R0
SYMATTR InstName Rload
SYMATTR Value 25
SYMBOL diode 2640 96 M180
WINDOW 0 28 62 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D5
SYMATTR Value MURS320
SYMBOL res 1632 288 R0
SYMATTR InstName R7
SYMATTR Value 125K
SYMBOL polcap 3104 -16 R0
SYMATTR InstName C10
SYMATTR Value 10
SYMATTR SpiceLine Rser=.1
SYMBOL cap 1968 448 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C3
SYMATTR Value .01
SYMBOL cap 1728 224 R0
SYMATTR InstName C4
SYMATTR Value .0022
SYMBOL res 2640 -96 R0
SYMATTR InstName R10
SYMATTR Value 660K
SYMBOL res 2144 192 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R12
SYMATTR Value 510
SYMBOL schottky 1904 192 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D1
SYMATTR Value BAT54
SYMBOL cap 1744 672 R0
SYMATTR InstName C1
SYMATTR Value 220p
SYMBOL res 1744 528 R0
SYMATTR InstName R3
SYMATTR Value 12K
FLAG 2656 672 0
FLAG 1760 752 0
FLAG 1872 624 0
FLAG 1648 576 0
FLAG 2176 704 0
FLAG 1744 320 0
FLAG 1968 320 0
FLAG 2400 368 0
FLAG 2848 320 0
FLAG 1888 0 0
FLAG 2320 80 0
FLAG 3568 -32 OUT
FLAG 3568 112 0
FLAG 1888 -112 IN
FLAG 2368 656 0
FLAG 1920 80 0
TEXT 2880 568 Left 2 !.tran 1m startup
TEXT 2808 -56 Left 2 !K1 L1 L2 L3 1