* Z:\home\khalils\Downloads\files\data\raw_asc\LT1244.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\LT1244.asy)
R7 N007 N011 152K
L3 N004 IN 100 Rser=.05
C7 IN N003 470p
R8 N010 N006 39
C8 N002 0 10
D6 0 N005 BZX84C6V2L
C5 N008 0 100p
R4 N011 0 20K
L2 N009 0 18.8 Rser=.1
K1 L1 L2 L3 1
R3 N016 N019 12K
C1 N019 0 220p
D3 N001 N002 MBRS340
L4 N002 +20V 1 Rpar=100
D1 N008 N007 BAT54
D5 N004 N003 MURS320
D2 N009 N010 BAT54
R6 N013 N012 12
R11 +20V 0 750
C9 +20V 0 3.3
MQ1 N004 N013 N018 N018 IRF7303
R1 N018 0 .67
C4 N007 0 .0022
R13 IN N006 400K
V1 IN 0 200
R2 N014 N011 100K
D4 N005 N006 BZX84C15L
R10 IN N003 660K
C3 N015 N014 .01
XU1 N015 N011 N017 N019 0 N012 N006 N016 LT1244 ;pnba COMP)FB)Isense)Rt/Ct)GND)Output)Vcc)Vref
R9 IN N017 1.32Meg
R5 N018 N017 1K
C6 N006 0 22
L1 N001 0 16 Rser=.05
C2 N016 0 .1
C10 N017 0 50p
Rload +20V 0 50
R12 N009 N008 510
.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 750u
.lib LT1244.sub
.backanno
.end

* LTspice schematic (.asc):
Version 4
SHEET 1 5945676 13421556
WIRE 2176 -128 2016 -128
WIRE 2368 -128 2176 -128
WIRE 2560 -128 2368 -128
WIRE 2672 -128 2560 -128
WIRE 2800 -128 2672 -128
WIRE 2016 -112 2016 -128
WIRE 2560 -112 2560 -128
WIRE 2672 -112 2672 -128
WIRE 2176 -96 2176 -128
WIRE 2800 -64 2800 -128
WIRE 2864 -64 2800 -64
WIRE 3008 -64 2928 -64
WIRE 3136 -64 3072 -64
WIRE 3184 -64 3136 -64
WIRE 3312 -64 3264 -64
WIRE 3408 -64 3312 -64
WIRE 3520 -64 3408 -64
WIRE 2368 -48 2368 -128
WIRE 2864 -48 2864 -64
WIRE 2928 -48 2928 -64
WIRE 3136 -48 3136 -64
WIRE 3312 -48 3312 -64
WIRE 3408 -48 3408 -64
WIRE 3520 -48 3520 -64
WIRE 2016 -16 2016 -32
WIRE 2560 -16 2560 -48
WIRE 2672 -16 2672 -32
WIRE 2672 -16 2560 -16
WIRE 2672 16 2672 -16
WIRE 2864 48 2864 32
WIRE 2864 48 2800 48
WIRE 2928 48 2928 32
WIRE 3136 48 3136 16
WIRE 3136 48 2928 48
WIRE 3312 48 3312 16
WIRE 3312 48 3136 48
WIRE 3408 48 3408 32
WIRE 3408 48 3312 48
WIRE 3520 48 3520 32
WIRE 3520 48 3408 48
WIRE 3520 64 3520 48
WIRE 1920 80 1856 80
WIRE 2064 80 1984 80
WIRE 2176 80 2176 -16
WIRE 2176 80 2128 80
WIRE 2672 96 2672 80
WIRE 2800 96 2800 48
WIRE 2800 96 2672 96
WIRE 1776 208 1680 208
WIRE 1840 208 1776 208
WIRE 1968 208 1904 208
WIRE 2048 208 1968 208
WIRE 2608 208 2128 208
WIRE 2864 208 2608 208
WIRE 1776 224 1776 208
WIRE 1968 224 1968 208
WIRE 2864 224 2864 208
WIRE 2176 272 2176 80
WIRE 2400 272 2176 272
WIRE 2432 272 2400 272
WIRE 2528 272 2512 272
WIRE 2608 272 2608 208
WIRE 2608 272 2592 272
WIRE 2400 288 2400 272
WIRE 1680 304 1680 208
WIRE 1776 304 1776 288
WIRE 1968 304 1968 288
WIRE 2864 320 2864 304
WIRE 2176 336 2176 272
WIRE 2672 352 2672 96
WIRE 2400 368 2400 352
WIRE 1680 400 1680 384
WIRE 2016 400 1680 400
WIRE 2464 432 2336 432
WIRE 2624 432 2544 432
WIRE 1680 464 1680 400
WIRE 1776 464 1680 464
WIRE 1904 464 1856 464
WIRE 2016 464 1968 464
WIRE 1680 480 1680 464
WIRE 1872 528 1760 528
WIRE 2016 528 1872 528
WIRE 1872 544 1872 528
WIRE 1760 560 1760 528
WIRE 2368 560 2368 32
WIRE 2368 560 2336 560
WIRE 2480 560 2368 560
WIRE 2672 560 2672 448
WIRE 2672 560 2560 560
WIRE 1680 576 1680 560
WIRE 2368 576 2368 560
WIRE 2672 576 2672 560
WIRE 2016 592 1968 592
WIRE 1872 624 1872 608
WIRE 2368 656 2368 640
WIRE 2672 672 2672 656
WIRE 1760 688 1760 640
WIRE 1968 688 1968 592
WIRE 1968 688 1760 688
WIRE 1760 704 1760 688
WIRE 2176 704 2176 656
WIRE 1760 784 1760 768
LINE Normal 2896 304 2896 -64 2
SYMBOL res 2144 192 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R12
SYMATTR Value 510
SYMBOL res 1872 448 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 100K
SYMBOL ind2 2944 -64 M0
WINDOW 0 1 32 Right 2
WINDOW 3 1 60 Right 2
SYMATTR InstName L1
SYMATTR Value 16
SYMATTR SpiceLine Rser=.05
SYMBOL polcap 3296 -48 R0
SYMATTR InstName C9
SYMATTR Value 3.3
SYMBOL PowerProducts\\LT1244 2176 496 R0
SYMATTR InstName U1
SYMBOL res 1744 544 R0
SYMATTR InstName R3
SYMATTR Value 12K
SYMBOL zener 1920 96 R270
WINDOW 0 36 32 VTop 2
WINDOW 3 -4 32 VBottom 2
SYMATTR InstName D6
SYMATTR Value BZX84C6V2L
SYMBOL cap 3120 -48 R0
SYMATTR InstName C8
SYMATTR Value 10
SYMBOL ind2 3168 -48 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L4
SYMATTR Value 1
SYMATTR Type ind
SYMATTR SpiceLine Rpar=100
SYMBOL cap 1968 448 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C3
SYMATTR Value .01
SYMBOL schottky 2592 256 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D2
SYMATTR Value BAT54
SYMBOL cap 1744 704 R0
SYMATTR InstName C1
SYMATTR Value 220p
SYMBOL cap 1856 544 R0
SYMATTR InstName C2
SYMATTR Value .1
SYMBOL cap 2384 288 R0
SYMATTR InstName C6
SYMATTR Value 22
SYMBOL RES 2656 560 R0
SYMATTR InstName R1
SYMATTR Value .67
SYMBOL res 3392 -64 R0
SYMATTR InstName R11
SYMATTR Value 750
SYMBOL res 2352 -64 R0
SYMATTR InstName R9
SYMATTR Value 1.32Meg
SYMBOL res 1664 464 R0
SYMATTR InstName R4
SYMATTR Value 20K
SYMBOL ind2 2848 48 M180
WINDOW 0 -4 79 Right 2
WINDOW 3 -3 42 Right 2
SYMATTR InstName L3
SYMATTR Value 100
SYMATTR SpiceLine Rser=.05
SYMBOL cap 1760 224 R0
SYMATTR InstName C4
SYMATTR Value .0022
SYMBOL VOLTAGE 2016 -128 R0
SYMATTR InstName V1
SYMATTR Value 200
SYMBOL schottky 1904 192 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D1
SYMATTR Value BAT54
SYMBOL res 2160 -112 R0
SYMATTR InstName R13
SYMATTR Value 400K
SYMBOL res 2560 416 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R6
SYMATTR Value 12
SYMBOL res 1664 288 R0
SYMATTR InstName R7
SYMATTR Value 152K
SYMBOL schottky 3008 -80 M90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D3
SYMATTR Value MBRS340
SYMBOL cap 2352 576 R0
SYMATTR InstName C10
SYMATTR Value 50p
SYMBOL zener 2064 96 R270
WINDOW 0 36 32 VTop 2
WINDOW 3 -4 32 VBottom 2
SYMATTR InstName D4
SYMATTR Value BZX84C15L
SYMBOL diode 2656 80 M180
WINDOW 0 24 72 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D5
SYMATTR Value MURS320
SYMBOL cap 2544 -112 R0
SYMATTR InstName C7
SYMATTR Value 470p
SYMBOL res 2576 544 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R5
SYMATTR Value 1K
SYMBOL ind2 2848 208 R0
WINDOW 0 -4 45 Right 2
WINDOW 3 -4 72 Right 2
SYMATTR InstName L2
SYMATTR Value 18.8
SYMATTR SpiceLine Rser=.1
SYMBOL res 3504 -64 R0
SYMATTR InstName Rload
SYMATTR Value 50
SYMBOL cap 1952 224 R0
SYMATTR InstName C5
SYMATTR Value 100p
SYMBOL res 2528 256 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R8
SYMATTR Value 39
SYMBOL res 2656 -128 R0
SYMATTR InstName R10
SYMATTR Value 660K
SYMBOL NMOS 2624 352 R0
SYMATTR InstName Q1
SYMATTR Value IRF7303
FLAG 2672 672 0
FLAG 1760 784 0
FLAG 1872 624 0
FLAG 1680 576 0
FLAG 2176 704 0
FLAG 1776 304 0
FLAG 1968 304 0
FLAG 2400 368 0
FLAG 2864 320 0
FLAG 2016 -16 0
FLAG 1856 80 0
FLAG 3520 -64 +20V
FLAG 3520 64 0
FLAG 2016 -128 IN
FLAG 2368 656 0
TEXT 3104 192 Left 2 !.tran 750u
TEXT 2896 -72 Bottom 2 !K1 L1 L2 L3 1