* Z:\home\khalils\Downloads\files\data\raw_asc\LT1952.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\LT1952.asy)
C3 N006 0 .005
V1 IN 0 20
Rload OUT 0 5
R5 N008 0 10m
R9 N004 IN 178K
C2 OUT 0 20 Rser=10m
R8 N014 0 4.99K
L1 IN N003 100
D2 0 N002 MBRS340
D1 N001 N002 MURS120
R7 OUT N014 43.7K
L2 N001 0 100
R3 N010 0 178K
R6 N012 N011 4.7K
C1 N014 N012 .002
MQ1 N003 N005 N008 N008 Si7868DP
R10 0 N004 {178K/10}
R2 N013 0 40K
R4 N007 N006 52.3K
K1 L1 L2 1
R11 N008 N009 1K
L3 N002 OUT 4 Rpar=1K
XU1 N011 N014 N010 MP_01 N006 N007 N004 0 N015 N009 N008 N013 0 N005 IN N016 LT1952 ;pnba Comp)FB)Rosc))SS_MAXDC)Vref)SD_Vsec)GND)Blank)Isense)OC)Delay)PGND)OUT)Vin)SOUT
R1 N015 0 40K
.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 1.2m startup
.lib LT1952.sub
.backanno
.end

* LTspice schematic (.asc):
Version 4
SHEET 1 1304 680
WIRE -80 -144 -416 -144
WIRE 176 -144 -80 -144
WIRE 512 -144 176 -144
WIRE 656 -144 560 -144
WIRE 784 -144 720 -144
WIRE 864 -144 784 -144
WIRE 976 -144 944 -144
WIRE 1040 -144 976 -144
WIRE 1104 -144 1040 -144
WIRE -80 -128 -80 -144
WIRE 512 -128 512 -144
WIRE 560 -128 560 -144
WIRE 784 -128 784 -144
WIRE 976 -128 976 -144
WIRE 1104 -128 1104 -144
WIRE -416 -112 -416 -144
WIRE -80 -32 -80 -48
WIRE 512 -32 512 -48
WIRE 560 -32 560 -48
WIRE 784 -32 784 -64
WIRE 976 -32 976 -64
WIRE 1104 -32 1104 -48
WIRE 176 0 176 -144
WIRE 1040 32 1040 -144
WIRE -416 48 -416 -32
WIRE -16 48 -416 48
WIRE 464 48 352 48
WIRE -416 64 -416 48
WIRE -208 128 -224 128
WIRE -128 128 -144 128
WIRE -112 128 -128 128
WIRE -16 128 -32 128
WIRE 464 128 352 128
WIRE 512 128 512 64
WIRE 512 128 464 128
WIRE 512 144 512 128
WIRE -416 160 -416 144
WIRE -128 208 -128 128
WIRE -16 208 -128 208
WIRE 368 208 352 208
WIRE 464 208 464 128
WIRE 464 208 448 208
WIRE 512 240 512 224
WIRE -112 288 -176 288
WIRE -16 288 -32 288
WIRE 368 288 352 288
WIRE 464 288 448 288
WIRE -160 368 -176 368
WIRE -16 368 -80 368
WIRE 464 368 464 352
WIRE 464 368 352 368
WIRE 1040 368 1040 112
WIRE 1040 368 464 368
WIRE 1040 384 1040 368
WIRE -112 448 -176 448
WIRE -16 448 -32 448
WIRE 384 448 352 448
WIRE 1040 480 1040 464
WIRE 96 528 96 512
WIRE 256 528 256 512
SYMBOL PowerProducts\\LT1952 176 240 R0
SYMATTR InstName U1
SYMBOL ind2 576 -144 M0
WINDOW 0 -1 35 Right 2
WINDOW 3 -7 80 Right 2
SYMATTR InstName L2
SYMATTR Value 100
SYMATTR Type ind
SYMBOL res 1024 16 R0
SYMATTR InstName R7
SYMATTR Value 43.7K
SYMBOL diode 768 -64 M180
WINDOW 0 32 57 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D2
SYMATTR Value MBRS340
SYMBOL res -432 -16 M180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R9
SYMATTR Value 178K
SYMBOL res 496 128 R0
SYMATTR InstName R5
SYMATTR Value 10m
SYMBOL res 1088 -144 R0
SYMATTR InstName Rload
SYMATTR Value 5
SYMBOL res -432 160 M180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R10
SYMATTR Value {178K/10}
SYMBOL res 1024 368 R0
SYMATTR InstName R8
SYMATTR Value 4.99K
SYMBOL res 464 272 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R6
SYMATTR Value 4.7K
SYMBOL nmos 464 -32 R0
SYMATTR InstName Q1
SYMATTR Value Si7868DP
SYMBOL voltage -80 -144 R0
SYMATTR InstName V1
SYMATTR Value 20
SYMBOL diode 656 -128 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName D1
SYMATTR Value MURS120
SYMBOL res -16 144 M270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R4
SYMATTR Value 52.3K
SYMBOL cap 960 -128 R0
SYMATTR InstName C2
SYMATTR Value 20
SYMATTR SpiceLine Rser=10m
SYMBOL res 464 224 M270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R11
SYMATTR Value 1K
SYMBOL res -16 432 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 40K
SYMBOL cap 448 352 M180
WINDOW 0 31 53 Left 2
WINDOW 3 24 8 Left 2
SYMATTR InstName C1
SYMATTR Value .002
SYMBOL res -64 352 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R2
SYMATTR Value 40K
SYMBOL res -16 272 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 178K
SYMBOL ind2 496 -144 R0
WINDOW 0 -8 37 Right 2
WINDOW 3 -5 77 Right 2
SYMATTR InstName L1
SYMATTR Value 100
SYMATTR Type ind
SYMBOL cap -144 112 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C3
SYMATTR Value .005
SYMBOL ind 848 -128 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L3
SYMATTR Value 4
SYMATTR SpiceLine Rpar=1K
FLAG -176 448 0
FLAG -176 368 0
FLAG -176 288 0
FLAG 512 240 0
FLAG 96 528 0
FLAG 256 528 0
FLAG 976 -32 0
FLAG 784 -32 0
FLAG 560 -32 0
FLAG 1104 -32 0
FLAG 1040 480 0
FLAG -416 160 0
FLAG -80 -32 0
FLAG -224 128 0
FLAG -80 -144 IN
FLAG 1104 -144 OUT
TEXT 536 -144 Bottom 2 !K1 L1 L2 1
TEXT 704 440 Left 2 !.tran 1.2m startup