* Z:\home\khalils\Downloads\files\data\raw_asc\LT1245.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\LT1245.asy)
R4 N010 0 20K
C2 N015 0 .1
R7 N006 N010 152K
MQ1 N004 N012 N017 N017 IRF7303
XU1 N014 N010 N016 N018 0 N011 N005 N015 LT1245 ;pnba COMP)FB)Isense)Rt/Ct)GND)Output)Vcc)Vref
Rload +20V 0 50
R12 N008 N007 510
C7 IN N003 470p
D1 N007 N006 BAT54
L2 N008 0 18.8 Rser=.1
C9 +20V 0 3.3
C4 N006 0 .0022
C6 N005 0 22
R8 N009 N005 39
C1 N018 0 220p
R11 +20V 0 750
D4 0 N005 BZX84C15L
K1 L1 L2 L3 1
C8 N002 0 10
R13 IN N005 400K
L1 N001 0 16 Rser=.05
R10 IN N003 660K
R5 N017 N016 1K
R9 IN N016 1.32Meg
D5 N004 N003 MURS320
C10 N016 0 50p
C5 N007 0 100p
L4 N002 +20V 1 Rpar=100
D3 N001 N002 MBRS340
V1 IN 0 200
R6 N012 N011 12
L3 N004 IN 100 Rser=.05
R2 N013 N010 100K
R1 N017 0 .67
C3 N014 N013 .01
D2 N008 N009 BAT54
R3 N015 N018 12K
.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
.lib LT1245.sub
.backanno
.end

* LTspice schematic (.asc):
Version 4
SHEET 1 5945676 13421556
WIRE 2176 -64 2032 -64
WIRE 2368 -64 2176 -64
WIRE 2592 -64 2368 -64
WIRE 2704 -64 2592 -64
WIRE 2832 -64 2704 -64
WIRE 2032 -48 2032 -64
WIRE 2176 -48 2176 -64
WIRE 2592 -48 2592 -64
WIRE 2704 -48 2704 -64
WIRE 2832 -16 2832 -64
WIRE 2896 -16 2832 -16
WIRE 3056 -16 2960 -16
WIRE 3168 -16 3120 -16
WIRE 3216 -16 3168 -16
WIRE 3344 -16 3296 -16
WIRE 3440 -16 3344 -16
WIRE 3552 -16 3440 -16
WIRE 2896 0 2896 -16
WIRE 2960 0 2960 -16
WIRE 3168 0 3168 -16
WIRE 3344 0 3344 -16
WIRE 3440 0 3440 -16
WIRE 3552 0 3552 -16
WIRE 2032 48 2032 32
WIRE 2592 48 2592 16
WIRE 2704 48 2704 32
WIRE 2704 48 2592 48
WIRE 2368 64 2368 -64
WIRE 2704 64 2704 48
WIRE 2896 96 2896 80
WIRE 2896 96 2832 96
WIRE 2960 96 2960 80
WIRE 3168 96 3168 64
WIRE 3168 96 2960 96
WIRE 3344 96 3344 64
WIRE 3344 96 3168 96
WIRE 3440 96 3440 80
WIRE 3440 96 3344 96
WIRE 3552 96 3552 80
WIRE 3552 96 3440 96
WIRE 2064 112 2016 112
WIRE 2176 112 2176 32
WIRE 2176 112 2128 112
WIRE 3552 112 3552 96
WIRE 2704 144 2704 128
WIRE 2832 144 2832 96
WIRE 2832 144 2704 144
WIRE 1744 208 1648 208
WIRE 1840 208 1744 208
WIRE 1968 208 1904 208
WIRE 2048 208 1968 208
WIRE 2640 208 2128 208
WIRE 2896 208 2640 208
WIRE 1744 224 1744 208
WIRE 1968 224 1968 208
WIRE 2896 224 2896 208
WIRE 1648 240 1648 208
WIRE 2176 272 2176 112
WIRE 2400 272 2176 272
WIRE 2464 272 2400 272
WIRE 2560 272 2544 272
WIRE 2640 272 2640 208
WIRE 2640 272 2624 272
WIRE 2400 288 2400 272
WIRE 1744 320 1744 288
WIRE 1968 320 1968 288
WIRE 2896 320 2896 304
WIRE 2176 336 2176 272
WIRE 2704 352 2704 144
WIRE 2400 384 2400 352
WIRE 1648 400 1648 320
WIRE 2016 400 1648 400
WIRE 2464 432 2336 432
WIRE 2656 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 144
WIRE 2368 560 2336 560
WIRE 2448 560 2368 560
WIRE 2704 560 2704 448
WIRE 2704 560 2528 560
WIRE 1648 576 1648 560
WIRE 2368 576 2368 560
WIRE 2704 576 2704 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 2176 672 2176 656
WIRE 2704 672 2704 656
WIRE 1760 752 1760 736
LINE Normal 2928 304 2928 0 2
SYMBOL diode 2688 128 M180
WINDOW 0 26 65 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D5
SYMATTR Value MURS320
SYMBOL res 2160 -64 R0
SYMATTR InstName R13
SYMATTR Value 400K
SYMBOL ind2 2880 96 M180
WINDOW 0 2 80 Right 2
WINDOW 3 1 42 Right 2
SYMATTR InstName L3
SYMATTR Value 100
SYMATTR SpiceLine Rser=.05
SYMBOL PowerProducts\\LT1245 2176 496 R0
SYMATTR InstName U1
SYMBOL cap 1968 448 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C3
SYMATTR Value .01
SYMBOL NMOS 2656 352 R0
SYMATTR InstName Q1
SYMATTR Value IRF7303
SYMBOL res 2144 192 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R12
SYMATTR Value 510
SYMBOL ind2 2880 208 R0
WINDOW 0 -6 46 Right 2
WINDOW 3 -5 72 Right 2
SYMATTR InstName L2
SYMATTR Value 18.8
SYMATTR SpiceLine Rser=.1
SYMBOL res 1632 464 R0
SYMATTR InstName R4
SYMATTR Value 20K
SYMBOL ind 3200 0 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L4
SYMATTR Value 1
SYMATTR SpiceLine Rpar=100
SYMBOL schottky 1904 192 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D1
SYMATTR Value BAT54
SYMBOL zener 2064 128 R270
WINDOW 0 36 32 VTop 2
WINDOW 3 -4 32 VBottom 2
SYMATTR InstName D4
SYMATTR Value BZX84C15L
SYMBOL res 1872 448 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 100K
SYMBOL cap 1856 544 R0
SYMATTR InstName C2
SYMATTR Value .1
SYMBOL res 3536 -16 R0
SYMATTR InstName Rload
SYMATTR Value 50
SYMBOL res 1744 528 R0
SYMATTR InstName R3
SYMATTR Value 12K
SYMBOL res 3424 -16 R0
SYMATTR InstName R11
SYMATTR Value 750
SYMBOL res 2688 -64 R0
SYMATTR InstName R10
SYMATTR Value 660K
SYMBOL res 1632 224 R0
SYMATTR InstName R7
SYMATTR Value 152K
SYMBOL RES 2688 560 R0
SYMATTR InstName R1
SYMATTR Value .67
SYMBOL VOLTAGE 2032 -64 R0
SYMATTR InstName V1
SYMATTR Value 200
SYMBOL res 2560 416 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R6
SYMATTR Value 12
SYMBOL schottky 3056 -32 M90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D3
SYMATTR Value MBRS340
SYMBOL ind2 2976 -16 M0
WINDOW 0 -1 40 Right 2
WINDOW 3 0 65 Right 2
SYMATTR InstName L1
SYMATTR Value 16
SYMATTR SpiceLine Rser=.05
SYMBOL polcap 3328 0 R0
SYMATTR InstName C9
SYMATTR Value 3.3
SYMBOL cap 1744 672 R0
SYMATTR InstName C1
SYMATTR Value 220p
SYMBOL cap 2384 288 R0
SYMATTR InstName C6
SYMATTR Value 22
SYMBOL schottky 2624 256 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D2
SYMATTR Value BAT54
SYMBOL cap 3152 0 R0
SYMATTR InstName C8
SYMATTR Value 10
SYMBOL cap 2576 -48 R0
SYMATTR InstName C7
SYMATTR Value 470p
SYMBOL cap 1728 224 R0
SYMATTR InstName C4
SYMATTR Value .0022
SYMBOL res 2560 256 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R8
SYMATTR Value 39
SYMBOL cap 1952 224 R0
SYMATTR InstName C5
SYMATTR Value 100p
SYMBOL res 2352 48 R0
SYMATTR InstName R9
SYMATTR Value 1.32Meg
SYMBOL cap 2352 576 R0
SYMATTR InstName C10
SYMATTR Value 50p
SYMBOL res 2544 544 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R5
SYMATTR Value 1K
FLAG 2704 672 0
FLAG 1760 752 0
FLAG 1872 624 0
FLAG 1648 576 0
FLAG 2176 672 0
FLAG 1744 320 0
FLAG 1968 320 0
FLAG 2400 384 0
FLAG 2896 320 0
FLAG 2032 48 0
FLAG 2016 112 0
FLAG 3552 -16 +20V
FLAG 3552 112 0
FLAG 2368 656 0
FLAG 2032 -64 IN
TEXT 2928 568 Left 2 !.tran 1m
TEXT 2928 -24 Bottom 2 !K1 L1 L2 L3 1