* Z:\home\khalils\Downloads\files\data\raw_asc\LT3837.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\LT3837.asy)
K1 L1 L2 1
R11 0 N008 40.2K
Q2 0 N007 N009 0 2N2907
C7 OUT 0 330 Rser=5m
R4 N005 N006 30
C1 0 N023 .002 Rser=2K
C2 N016 N015 .1 Rser=330
R3 N007 0 10K
D2 N003 N005 BAT54
C3 N007 N017 2200p
R7 N022 0 100K
Q4 N006 N007 N009 0 2N2222
L3 0 N016 1500
R5 N019 0 1.2K
R8 N018 0 20K
R9 N004 N002 20K
Rload OUT 0 1
R1 N012 0 .006
K2 L3 L4 1
MQ1 N002 N011 N012 N012 Si7852DP
C6 N014 0 47p
L4 0 N017 1500
C4 N006 0 1
C5 N021 0 .1
R6 N020 0 150K
D3 N001 N004 1N4148
L2 OUT N003 .98
R10 0 N010 3K
MQ3 N003 N009 0 0 HAT2166H
L1 N002 N001 7
Q5 N010 N001 N004 0 2N3906
V1 N001 0 15
R12 N008 N001 287K
D1 0 N007 BAT54
XU1 N015 N001 N022 N020 0 N013 N014 N010 N023 N008 0 N012 N021 N019 N018 N011 0 LT3837 ;pnba SG)Vcc)Ton)ENDLY)SYNC)SFST)OSC)FB)Vc)UVLO)Sense-)Sense+)Ccmp)Rcmp)PGDLY)PG)GND
.model D D
.lib C:\users\khalils\AppData\Local\LTspice\lib\cmp\standard.dio
.model NPN NPN
.model PNP PNP
.lib C:\users\khalils\AppData\Local\LTspice\lib\cmp\standard.bjt
.model NMOS NMOS
.model PMOS PMOS
.lib C:\users\khalils\AppData\Local\LTspice\lib\cmp\standard.mos
.tran 1m startup
.lib LT3837.sub
.backanno
.end

* LTspice schematic (.asc):
Version 4
SHEET 1 2288 1008
WIRE 288 -272 144 -272
WIRE 560 -272 288 -272
WIRE 144 -256 144 -272
WIRE 560 -256 560 -272
WIRE 608 -256 560 -256
WIRE 1040 -256 656 -256
WIRE 1136 -256 1040 -256
WIRE 608 -240 608 -256
WIRE 656 -240 656 -256
WIRE 1040 -240 1040 -256
WIRE 1136 -240 1136 -256
WIRE 144 -160 144 -176
WIRE 608 -144 608 -160
WIRE 608 -144 560 -144
WIRE 656 -144 656 -160
WIRE 704 -144 656 -144
WIRE 1040 -144 1040 -176
WIRE 1136 -144 1136 -160
WIRE 16 -128 -112 -128
WIRE 384 -128 16 -128
WIRE 560 -128 560 -144
WIRE 560 -128 464 -128
WIRE 16 -112 16 -128
WIRE 704 -112 704 -144
WIRE 736 -112 704 -112
WIRE 816 -112 800 -112
WIRE 912 -112 896 -112
WIRE 976 -112 912 -112
WIRE 976 -96 976 -112
WIRE -112 -80 -112 -128
WIRE 912 -80 912 -112
WIRE 704 -48 704 -112
WIRE 1104 -48 1040 -48
WIRE 16 -32 16 -48
WIRE 16 -32 -48 -32
WIRE 288 -32 288 -272
WIRE 288 -32 16 -32
WIRE 912 0 912 -16
WIRE 32 16 16 16
WIRE 128 16 112 16
WIRE 144 16 128 16
WIRE 288 16 288 -32
WIRE 288 16 224 16
WIRE 560 32 560 -128
WIRE 976 32 976 0
WIRE 976 32 752 32
WIRE 128 64 128 16
WIRE 288 64 288 16
WIRE 704 64 704 48
WIRE 976 64 976 32
WIRE -112 112 -112 16
WIRE 32 112 -112 112
WIRE 512 112 384 112
WIRE 1104 112 1104 -48
WIRE 1104 112 1040 112
WIRE -112 128 -112 112
WIRE 976 176 976 160
WIRE 32 192 16 192
WIRE 560 192 560 128
WIRE 560 192 384 192
WIRE -112 224 -112 208
WIRE 32 272 16 272
WIRE 560 272 384 272
WIRE 560 288 560 272
WIRE -48 352 -112 352
WIRE 32 352 16 352
WIRE 496 352 384 352
WIRE 704 352 560 352
WIRE 832 352 752 352
WIRE 944 352 896 352
WIRE 1104 352 1104 112
WIRE 1104 352 944 352
WIRE 704 368 704 352
WIRE 752 368 752 352
WIRE 944 368 944 352
WIRE 1104 368 1104 352
WIRE -96 432 -112 432
WIRE 32 432 -16 432
WIRE 400 432 384 432
WIRE 528 432 480 432
WIRE 704 464 704 448
WIRE 752 464 752 448
WIRE 944 464 944 448
WIRE 1104 464 1104 432
WIRE -64 512 -112 512
WIRE 32 512 16 512
WIRE 448 512 384 512
WIRE 528 512 512 512
WIRE -96 592 -112 592
WIRE 32 592 -16 592
WIRE 416 592 384 592
WIRE 528 592 480 592
WIRE 208 656 208 640
SYMBOL ind2 592 -144 M180
WINDOW 0 -1 76 Right 2
WINDOW 3 -1 40 Right 2
SYMATTR InstName L1
SYMATTR Value 7
SYMATTR Type ind
SYMBOL res 0 416 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R8
SYMATTR Value 20K
SYMBOL nmos 752 -48 M0
WINDOW 3 21 102 Right 2
WINDOW 0 1 31 Right 2
SYMATTR Value HAT2166H
SYMATTR InstName Q3
SYMBOL cap 896 336 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C3
SYMATTR Value 2200p
SYMBOL schottky 736 -96 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName D2
SYMATTR Value BAT54
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL res 928 352 R0
SYMATTR InstName R3
SYMATTR Value 10K
SYMBOL res 128 32 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R12
SYMATTR Value 287K
SYMBOL res 384 416 M90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R5
SYMATTR Value 1.2K
SYMBOL pnp 1040 160 R180
WINDOW 0 46 100 Right 2
WINDOW 3 46 -4 Right 2
SYMATTR InstName Q2
SYMATTR Value 2N2907
SYMBOL res 544 176 R0
SYMATTR InstName R1
SYMATTR Value .006
SYMBOL cap 896 -80 R0
SYMATTR Value 1
SYMATTR InstName C4
SYMBOL nmos 512 32 R0
WINDOW 0 56 13 Left 2
WINDOW 3 58 93 Left 2
SYMATTR InstName Q1
SYMATTR Value Si7852DP
SYMBOL res 800 -96 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R4
SYMATTR Value 30
SYMBOL res 368 -112 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R9
SYMATTR Value 20K
SYMBOL res 32 496 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R6
SYMATTR Value 150K
SYMBOL cap 448 528 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName C5
SYMATTR Value .1
SYMBOL cap 1024 -240 R0
SYMATTR Value 330
SYMATTR InstName C7
SYMATTR SpiceLine Rser=5m
SYMBOL res -128 224 M180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R10
SYMATTR Value 3K
SYMBOL cap 16 336 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C6
SYMATTR Value 47p
SYMBOL ind2 688 464 M180
WINDOW 0 -2 73 Right 2
WINDOW 3 3 39 Right 2
SYMATTR InstName L3
SYMATTR Value 1500
SYMATTR Type ind
SYMBOL ind2 768 464 R180
WINDOW 0 -10 77 Right 2
WINDOW 3 -4 42 Right 2
SYMATTR InstName L4
SYMATTR Value 1500
SYMATTR Type ind
SYMBOL LT3837 208 352 R0
SYMATTR InstName U1
SYMBOL cap 480 576 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 36 32 VTop 2
WINDOW 39 69 36 VTop 2
SYMATTR InstName C1
SYMATTR Value .002
SYMATTR SpiceLine Rser=2K
SYMBOL pnp -48 16 R180
WINDOW 0 46 105 Right 2
WINDOW 3 56 -15 Right 2
SYMATTR InstName Q5
SYMATTR Value 2N3906
SYMBOL npn 1040 -96 M0
WINDOW 0 42 0 Right 2
WINDOW 3 51 108 Right 2
SYMATTR InstName Q4
SYMATTR Value 2N2222
SYMBOL voltage 144 -272 R0
SYMATTR InstName V1
SYMATTR Value 15
SYMBOL res 16 32 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R11
SYMATTR Value 40.2K
SYMBOL diode 0 -48 M180
WINDOW 0 33 61 Left 2
WINDOW 3 28 4 Left 2
SYMATTR InstName D3
SYMATTR Value 1N4148
SYMBOL cap 560 336 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
WINDOW 39 57 32 VTop 2
SYMATTR InstName C2
SYMATTR Value .1
SYMATTR SpiceLine Rser=330
SYMBOL ind2 672 -256 M0
WINDOW 0 -2 39 Right 2
WINDOW 3 -1 68 Right 2
SYMATTR InstName L2
SYMATTR Value .98
SYMATTR Type ind
SYMBOL schottky 1088 432 M180
WINDOW 0 39 66 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D1
SYMATTR Value BAT54
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL res 1120 -256 R0
SYMATTR InstName Rload
SYMATTR Value 1
SYMBOL res 0 576 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R7
SYMATTR Value 100K
FLAG 560 288 0
FLAG 528 592 0
FLAG 704 64 0
FLAG 912 0 0
FLAG 1136 -144 0
FLAG 1136 -256 OUT
FLAG 1104 464 0
FLAG 944 464 0
FLAG 976 176 0
FLAG 752 464 0
FLAG 704 464 0
FLAG 208 656 0
FLAG 144 -160 0
FLAG 528 432 0
FLAG 528 512 0
FLAG -112 352 0
FLAG 16 192 0
FLAG -112 512 0
FLAG -112 592 0
FLAG -112 432 0
FLAG 1040 -144 0
FLAG -112 224 0
FLAG 16 16 0
TEXT 632 -256 Bottom 2 !K1 L1 L2 1
TEXT 728 352 Bottom 2 !K2 L3 L4 1
TEXT 824 552 Left 2 !.tran 1m startup