* SPICE netlist
C1 N018 0 5n
C2 P001 0 2.2n
V1 IN 0 40
R1 N001 N002 4m
C3 N001 N004 0.1
MQ1 IN N009 N001 N001 BSC067N06LS3
MQ2 N001 N007 0 0 BSC100N06LS3
L1 N002 N003 10 Rser=2m
R2 N006 OUT 50m
MQ3 N006 N010 N003 N003 BSC093N04LS
MQ4 N003 N008 0 0 BSC093N04LS
C4 N005 N003 0.1
R3 N017 0 100K
R4 OUT N014 1Meg
C5 N012 0 4.7
C6 N015 0 0.47
R5 N014 0 34.8k
R6 N011 0 221K
R7 IN N011 499K
C7 N006 0 10 x2
R8 N013 N012 100K
R9 N016 P001 2.2K
R11 N018 N015 499K
XU1 N007 N004 N001 N009 N001 N002 IN N012 N011 0 N015 N015 N015 N006 OUT 0 N013 N018 N014 N016 N017 0 N008 N006 N010 N003 N005 LT8391D ;pnba BG1)BST1)SW1)TG1)LSP)LSN)Vin)INTVcc)EN/UVLO)Rp)PWM)Vref)CTRL)ISP)ISN)GND)_Fault)SS)FB)Vc)RT)SPRD)BG2)Vout)TG2)SW2)BST2
DLED1 OUT 0 LXK2-PW14 N=6 M=2
.tran 2m startup

* LTspice schematic (.asc)
Version 4
SHEET 1 1984 1248
WIRE -336 -624 -688 -624
WIRE -208 -624 -336 -624
WIRE -192 -624 -208 -624
WIRE -80 -624 -112 -624
WIRE -64 -624 -80 -624
WIRE 48 -624 16 -624
WIRE 288 -624 48 -624
WIRE -336 -544 -336 -624
WIRE -208 -544 -208 -624
WIRE -80 -544 -80 -624
WIRE 48 -544 48 -624
WIRE -880 -480 -992 -480
WIRE -832 -480 -880 -480
WIRE -688 -480 -688 -624
WIRE -688 -480 -736 -480
WIRE -560 -480 -688 -480
WIRE -448 -480 -496 -480
WIRE 176 -480 160 -480
WIRE 288 -480 288 -624
WIRE 288 -480 240 -480
WIRE 464 -480 288 -480
WIRE 608 -480 560 -480
WIRE 688 -480 608 -480
WIRE 720 -480 688 -480
WIRE 816 -480 800 -480
WIRE 880 -480 816 -480
WIRE 992 -480 880 -480
WIRE -992 -464 -992 -480
WIRE -688 -464 -688 -480
WIRE 288 -464 288 -480
WIRE 608 -464 608 -480
WIRE 992 -400 992 -480
WIRE -448 -384 -640 -384
WIRE 240 -384 160 -384
WIRE 608 -384 608 -400
WIRE -992 -368 -992 -384
WIRE -688 -352 -688 -368
WIRE 288 -352 288 -368
WIRE -752 -304 -752 -432
WIRE -448 -304 -752 -304
WIRE 480 -304 480 -432
WIRE 480 -304 160 -304
WIRE 992 -256 992 -336
WIRE -880 -224 -880 -480
WIRE -448 -224 -880 -224
WIRE 176 -224 160 -224
WIRE 688 -224 688 -480
WIRE 688 -224 176 -224
WIRE 880 -192 880 -480
WIRE -880 -128 -880 -144
WIRE -448 -128 -880 -128
WIRE 176 -128 176 -224
WIRE 176 -128 160 -128
WIRE -880 -112 -880 -128
WIRE -688 -32 -704 -32
WIRE -608 -32 -624 -32
WIRE -448 -32 -608 -32
WIRE 816 -32 816 -480
WIRE 816 -32 160 -32
WIRE -880 -16 -880 -32
WIRE -608 64 -608 -32
WIRE -560 64 -608 64
WIRE -448 64 -480 64
WIRE 880 64 880 -112
WIRE 880 64 160 64
WIRE 880 96 880 64
WIRE -544 160 -560 160
WIRE -464 160 -480 160
WIRE -448 160 -464 160
WIRE 176 160 160 160
WIRE 880 224 880 176
WIRE -464 256 -464 160
WIRE -448 256 -464 256
WIRE 176 256 160 256
WIRE -464 352 -464 256
WIRE -448 352 -464 352
WIRE 176 352 160 352
WIRE -144 464 -144 448
WIRE 48 464 48 448
WIRE -464 496 -464 352
WIRE -448 496 -464 496
WIRE -336 496 -336 448
WIRE -336 496 -368 496
WIRE -336 512 -336 496
WIRE 48 560 48 544
WIRE -336 608 -336 576
WIRE -144 624 -144 608
FLAG 176 352 0
FLAG -336 608 0
FLAG 48 560 0
FLAG -144 624 0
FLAG -992 -368 0
FLAG -880 -16 0
FLAG 608 -384 0
FLAG -992 -480 IN
FLAG -688 -352 0
FLAG 288 -352 0
FLAG -704 -32 0
FLAG -560 160 0
FLAG 880 224 0
FLAG 176 256 0
FLAG 880 -480 OUT
FLAG 176 160 0
FLAG 992 -256 0
SYMBOL cap -352 512 R0
SYMATTR InstName C1
SYMATTR Value 5n
SYMBOL cap -160 544 R0
SYMATTR Value 2.2n
SYMATTR InstName C2
SYMBOL voltage -992 -480 R0
SYMATTR Value 40
SYMATTR InstName V1
SYMBOL res -208 -608 R270
SYMATTR InstName R1
SYMATTR Value 4m
SYMBOL cap -560 -464 R270
SYMATTR InstName C3
SYMATTR Value 0.1
SYMBOL nmos -832 -432 R270
SYMATTR InstName Q1
SYMATTR Value BSC067N06LS3
SYMBOL nmos -640 -464 M0
SYMATTR InstName Q2
SYMATTR Value BSC100N06LS3
SYMBOL ind -80 -608 R270
SYMATTR InstName L1
SYMATTR Value 10
SYMATTR SpiceLine Rser=2m
SYMBOL res 704 -464 R270
SYMATTR InstName R2
SYMATTR Value 50m
SYMBOL nmos 560 -432 M270
SYMATTR InstName Q3
SYMATTR Value BSC093N04LS
SYMBOL nmos 240 -464 R0
SYMATTR InstName Q4
SYMATTR Value BSC093N04LS
SYMBOL cap 176 -496 M90
SYMATTR InstName C4
SYMATTR Value 0.1
SYMBOL res 32 448 R0
SYMATTR InstName R3
SYMATTR Value 100K
SYMBOL res 864 -208 R0
SYMATTR InstName R4
SYMATTR Value 1Meg
SYMBOL cap -624 -48 R90
SYMATTR InstName C5
SYMATTR Value 4.7
SYMBOL cap -480 144 R90
SYMATTR InstName C6
SYMATTR Value 0.47
SYMBOL res 864 80 R0
SYMATTR InstName R5
SYMATTR Value 34.8k
SYMBOL res -896 -128 R0
SYMATTR InstName R6
SYMATTR Value 221K
SYMBOL res -896 -240 R0
SYMATTR InstName R7
SYMATTR Value 499K
SYMBOL cap 592 -464 R0
SYMATTR Value2 x2
SYMATTR Value 10
SYMATTR InstName C7
SYMBOL res -464 48 R90
SYMATTR InstName R8
SYMATTR Value 100K
SYMBOL res -160 448 R0
SYMATTR InstName R9
SYMATTR Value 2.2K
SYMBOL res -352 480 R90
SYMATTR InstName R11
SYMATTR Value 499K
SYMBOL LT8391D -144 -16 R0
SYMATTR InstName U1
SYMBOL LED 976 -400 R0
SYMATTR Value2 N=6 M=2
SYMATTR Value LXK2-PW14
SYMATTR InstName LED1
SYMATTR Description Diode
SYMATTR Type diode