* Z:\home\khalils\Downloads\files\data\raw_asc\LTC3803.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\LTC3803.asy)
Rload OUT 0 5
C1 OUT 0 300 Rser=10m
V1 IN 0 36
L1 IN N003 76 Rser=.01 Cpar=1p
R5 N006 N005 56K
L2 0 N001 1 Rser=1m Cpar=2p
C2 N002 0 10
D1 N001 OUT 1N5817
MQ1 N003 N004 N007 N007 Si4848DY
R4 0 N008 20K
XU1 N006 0 N008 N007 N002 N004 LTC3803 ;pnba Ith/Run)GND)FB)Sense)Vcc)Ngate
C3 N005 0 .0047
R1 N007 0 0.068
R2 IN N002 6.8K
R3 N008 OUT 105K
K1 L1 L2 1
.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 0 25ms 15m startup
.lib LTC3803.sub
.backanno
.end

* LTspice schematic (.asc):
Version 4
SHEET 1 2184 704
WIRE 144 -16 -80 -16
WIRE 352 -16 144 -16
WIRE 464 -16 400 -16
WIRE 560 -16 528 -16
WIRE 608 -16 560 -16
WIRE 704 -16 608 -16
WIRE -80 0 -80 -16
WIRE 144 0 144 -16
WIRE 608 0 608 -16
WIRE 704 0 704 -16
WIRE 352 16 352 -16
WIRE 400 16 400 -16
WIRE -80 96 -80 80
WIRE 64 96 48 96
WIRE 144 96 144 80
WIRE 144 96 128 96
WIRE 608 96 608 64
WIRE 704 96 704 80
WIRE 352 112 352 96
WIRE 560 112 560 -16
WIRE 400 128 400 96
WIRE 144 144 144 96
WIRE 304 192 272 192
WIRE -160 256 -176 256
WIRE -80 256 -96 256
WIRE 16 256 0 256
WIRE 352 256 352 208
WIRE 352 256 272 256
WIRE 560 256 560 192
WIRE 560 256 480 256
WIRE 352 272 352 256
WIRE 560 272 560 256
WIRE 304 320 272 320
WIRE 352 368 352 352
WIRE 560 368 560 352
WIRE 144 384 144 368
WIRE 304 400 304 320
WIRE 480 400 480 256
WIRE 480 400 304 400
SYMBOL res 544 208 M180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R3
SYMATTR Value 105K
SYMBOL res 544 368 M180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R4
SYMATTR Value 20K
SYMBOL res 688 -16 R0
SYMATTR InstName Rload
SYMATTR Value 5
SYMBOL voltage -80 -16 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value 36
SYMBOL res 128 -16 R0
SYMATTR InstName R2
SYMATTR Value 6.8K
SYMBOL PowerProducts\\LTC3803 144 256 R0
SYMATTR InstName U1
SYMBOL schottky 464 0 R270
WINDOW 0 32 32 VTop 2
WINDOW 3 0 32 VBottom 2
SYMATTR InstName D1
SYMATTR Value 1N5817
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL ind2 336 0 R0
WINDOW 0 -5 33 Right 2
WINDOW 3 -2 77 Right 2
SYMATTR InstName L1
SYMATTR Value 76
SYMATTR Type ind
SYMATTR SpiceLine Rser=.01 Cpar=1p
SYMBOL cap 592 0 R0
SYMATTR InstName C1
SYMATTR Value 300
SYMATTR SpiceLine Rser=10m
SYMBOL res 16 240 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R5
SYMATTR Value 56K
SYMBOL res 336 256 R0
SYMATTR InstName R1
SYMATTR Value 0.068
SYMBOL nmos 304 112 R0
WINDOW 0 46 29 Left 2
SYMATTR InstName Q1
SYMATTR Value Si4848DY
SYMBOL cap -96 240 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C3
SYMATTR Value .0047
SYMBOL ind2 416 112 R180
WINDOW 0 -3 80 Right 2
WINDOW 3 -3 37 Right 2
SYMATTR InstName L2
SYMATTR Value 1
SYMATTR Type ind
SYMATTR SpiceLine Rser=1m Cpar=2p
SYMBOL cap 128 80 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C2
SYMATTR Value 10
FLAG 144 384 0
FLAG 352 368 0
FLAG -80 96 0
FLAG 400 128 0
FLAG 608 96 0
FLAG 704 96 0
FLAG -176 256 0
FLAG 704 -16 OUT
FLAG 560 368 0
FLAG 48 96 0
FLAG -80 -16 IN
TEXT 376 -16 Bottom 2 !K1 L1 L2 1
TEXT 440 432 Left 2 !.tran 0 25ms 15m startup