* Z:\home\khalils\Downloads\files\data\raw_asc\LT3743.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\LT3743.asy)
C4 OUT 0 1000
R2 N012 0 10K
M1 IN N006 N008 N008 Si7884DP
V2 N007 0 1.5
C1 N001 0 10
M2 N008 N010 0 0 Si7884DP
C5 N016 N018 4.7n
C6 N011 0 .005
XU1 0 N003 N002 N003 N017 N007 0 N011 MP_01 N012 N009 OUT NC_02 N016 N005 MP_03 N003 N013 N015 MP_04 MP_05 NC_06 N006 N008 N004 N010 N001 IN LT3743 ;pnba GND)EN/UVLO)Vref)CTRL_T)SYNC)CTRL_H)CTRL_L)SS))FB)Sense+)Sense-)VCL)VCH)Rt))CTRL_SEL)PWM)PWMGH)))PWMGL)HG)SW)CBOOT)LG)Vcc_int)Vin
V1 IN 0 12
L1 N008 N009 1.1 Rser=15m Rpar=5K
R1 N009 OUT 2.5m
R5 N018 0 34K
R4 N005 0 82.5K
C3 N004 N008 .15
M3 N014 N015 0 0 IRF6620
R3 OUT N012 60.4K
D1 N001 N004 1N5817
D2 OUT N014 PT-121-B
C2 N002 0 2n
V3 N003 0 5
V5 N017 0 PULSE(0 2 0 1n 1n 833.33n 1.67u)
V4 N013 0 PULSE(0 2 1m 1u 1u .1m .3m)
.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 5m startup
.lib LT3743.sub
.backanno
.end

* LTspice schematic (.asc):
Version 4.1
SHEET 1 1976 884
WIRE 96 -336 96 -352
WIRE 224 -336 224 -352
WIRE 592 -272 352 -272
WIRE 656 -272 592 -272
WIRE 224 -256 224 -272
WIRE 480 -256 224 -256
WIRE 656 -256 656 -272
WIRE 96 -240 96 -272
WIRE 224 -240 224 -256
WIRE 352 -240 352 -272
WIRE -192 -176 -288 -176
WIRE 0 -176 -192 -176
WIRE 480 -176 480 -192
WIRE 480 -176 448 -176
WIRE -288 -160 -288 -176
WIRE 592 -160 592 -272
WIRE 656 -144 656 -176
WIRE -96 -80 -112 -80
WIRE 0 -80 -16 -80
WIRE 544 -80 448 -80
WIRE -288 -64 -288 -80
WIRE 480 -64 480 -176
WIRE 0 16 -128 16
WIRE 480 16 480 0
WIRE 480 16 448 16
WIRE 592 16 592 -64
WIRE 592 16 480 16
WIRE 624 16 592 16
WIRE 736 16 704 16
WIRE 752 16 736 16
WIRE 848 16 832 16
WIRE 912 16 848 16
WIRE 1008 16 912 16
WIRE -128 32 -128 16
WIRE 592 32 592 16
WIRE 912 32 912 16
WIRE 0 112 -16 112
WIRE 544 112 448 112
WIRE 912 112 912 96
WIRE -128 128 -128 112
WIRE 592 144 592 128
WIRE -96 208 -128 208
WIRE 0 208 -32 208
WIRE 736 208 736 16
WIRE 736 208 448 208
WIRE 1008 208 1008 16
WIRE -192 304 -192 -176
WIRE -16 304 -192 304
WIRE 0 304 -16 304
WIRE 848 304 848 16
WIRE 848 304 448 304
WIRE -16 400 -16 304
WIRE 0 400 -16 400
WIRE 848 400 848 384
WIRE 848 400 448 400
WIRE 848 416 848 400
WIRE 0 496 -432 496
WIRE 848 512 848 496
WIRE 1008 512 1008 272
WIRE -432 544 -432 496
WIRE 0 592 -32 592
WIRE 960 592 448 592
WIRE 1008 640 1008 608
WIRE -432 656 -432 624
WIRE 352 688 352 656
WIRE 96 704 96 656
WIRE 352 768 352 752
WIRE 96 816 96 784
WIRE 352 864 352 848
SYMBOL cap 208 -272 M180
WINDOW 0 24 64 Left 2
WINDOW 3 24 8 Left 2
SYMATTR InstName C1
SYMATTR Value 10
SYMBOL LED 992 208 R0
SYMATTR InstName D2
SYMATTR Value PT-121-B
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL voltage -288 -176 R0
SYMATTR InstName V3
SYMATTR Value 5
SYMBOL res 736 32 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R1
SYMATTR Value 2.5m
SYMBOL res 832 288 R0
SYMATTR InstName R3
SYMATTR Value 60.4K
SYMBOL voltage 96 688 R0
WINDOW 3 -172 169 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR Value PULSE(0 2 0 1n 1n 833.33n 1.67u)
SYMATTR InstName V5
SYMBOL nmos 544 -160 R0
SYMATTR InstName M1
SYMATTR Value Si7884DP
SYMBOL cap 80 -272 M180
WINDOW 0 24 64 Left 2
WINDOW 3 24 8 Left 2
SYMATTR InstName C2
SYMATTR Value 2n
SYMBOL LT3743 224 208 R0
SYMATTR InstName U1
SYMBOL voltage -128 16 R0
SYMATTR InstName V2
SYMATTR Value 1.5
SYMBOL res 832 400 R0
SYMATTR InstName R2
SYMATTR Value 10K
SYMBOL res 336 752 R0
SYMATTR InstName R5
SYMATTR Value 34K
SYMBOL voltage -432 528 R0
WINDOW 3 29 149 Left 2
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR Value PULSE(0 2 1m 1u 1u .1m .3m)
SYMATTR InstName V4
SYMBOL cap 336 688 R0
WINDOW 39 27 72 Left 2
WINDOW 3 42 35 Left 2
SYMATTR Value 4.7n
SYMATTR InstName C5
SYMBOL cap -32 192 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C6
SYMATTR Value .005
SYMBOL nmos 960 512 R0
SYMATTR InstName M3
SYMATTR Value IRF6620
SYMBOL voltage 656 -272 R0
SYMATTR InstName V1
SYMATTR Value 12
SYMBOL ind 608 32 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L1
SYMATTR Value 1.1
SYMATTR SpiceLine Rser=15m Rpar=5K
SYMBOL schottky 464 -256 R0
SYMATTR InstName D1
SYMATTR Value 1N5817
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL cap 464 -64 R0
SYMATTR InstName C3
SYMATTR Value .15
SYMBOL nmos 544 32 R0
SYMATTR InstName M2
SYMATTR Value Si7884DP
SYMBOL cap 896 32 R0
SYMATTR InstName C4
SYMATTR Value 1000
SYMBOL res 0 -96 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R4
SYMATTR Value 82.5K
FLAG 656 -144 0
FLAG 656 -272 IN
FLAG 592 144 0
FLAG 224 -352 0
FLAG 96 -352 0
FLAG 912 112 0
FLAG 1008 640 0
FLAG 1008 16 OUT
FLAG 848 512 0
FLAG 352 864 0
FLAG -32 592 0
FLAG -112 -80 0
FLAG -16 112 0
FLAG -128 208 0
FLAG -128 128 0
FLAG -288 -64 0
FLAG -432 656 0
FLAG 96 816 0
TEXT 624 680 Left 2 !.tran 5m startup