* SPICE netlist
MQ1 N007 N011 N013 N013 Si4410DY
R1 N013 0 .1
C1 N015 0 100p
C2 N004 0 1n
L1 N007 IN 20 Rpar=5K
R2 N010 0 100K
R3 N012 0 100K
R4 N014 0 100K
R5 N005 0 100K
C3 N008 0 .1
R6 N001 N003 10K
R7 N003 0 3K
L2 N002 0 5 Rpar=5K
L3 N001 0 5 Rpar=5K
D1 N002 OUT 1N5817
C4 OUT 0 50 Rser=25m
Rload OUT 0 10
V1 IN 0 16
XU1 0 N013 N006 N005 N008 N015 N004 N003 N009 IN 0 N010 N012 N014 IN N011 LT1725 ;pnba PGND)Isense)SFST)Rocmp)Rcmpc)OSCAP)Vc)FB)3Vout)UVLO)SGND)MinEnab)EnDly)Ton)Vcc)GATE
K1 L1 L2 L3 1
.tran 1.2m startup

* LTspice schematic (.asc)
Version 4
SHEET 1 1312 688
WIRE 288 -344 -640 -344
WIRE 288 -328 288 -344
WIRE 288 -232 288 -248
WIRE -160 -200 -400 -200
WIRE 0 -200 -160 -200
WIRE 288 -200 0 -200
WIRE -640 -184 -640 -344
WIRE -400 -184 -400 -200
WIRE 416 -168 336 -168
WIRE 544 -168 480 -168
WIRE 656 -168 544 -168
WIRE 544 -152 544 -168
WIRE 656 -152 656 -168
WIRE 288 -136 288 -200
WIRE 336 -136 336 -168
WIRE -160 -120 -160 -200
WIRE 0 -120 0 -200
WIRE -400 -88 -400 -104
WIRE -640 -56 -640 -104
WIRE -272 -56 -640 -56
WIRE 128 -56 112 -56
WIRE 208 -56 192 -56
WIRE 544 -56 544 -88
WIRE 656 -56 656 -72
WIRE -640 -24 -640 -56
WIRE 336 -24 336 -56
WIRE -368 8 -448 8
WIRE -272 8 -288 8
WIRE 144 8 112 8
WIRE 288 56 288 -56
WIRE -432 72 -448 72
WIRE -272 72 -368 72
WIRE 144 72 112 72
WIRE -640 88 -640 56
WIRE -368 136 -448 136
WIRE -272 136 -288 136
WIRE 240 136 112 136
WIRE -432 200 -448 200
WIRE -272 200 -352 200
WIRE 288 200 288 152
WIRE 288 200 112 200
WIRE 288 232 288 200
WIRE -368 264 -448 264
WIRE -272 264 -288 264
WIRE 128 264 112 264
WIRE 208 264 192 264
WIRE 288 328 288 312
WIRE -160 344 -160 328
WIRE 0 344 0 328
FLAG -160 344 0
FLAG 0 344 0
FLAG 288 328 0
FLAG 208 -56 0
FLAG -448 136 0
FLAG -448 200 0
FLAG -448 264 0
FLAG -448 72 0
FLAG -448 8 0
FLAG 208 264 0
FLAG -640 88 0
FLAG 336 -24 0
FLAG 544 -56 0
FLAG 656 -56 0
FLAG 288 -232 0
FLAG -400 -88 0
FLAG 656 -168 OUT
FLAG -400 -200 IN
SYMBOL NMOS 240 56 R0
SYMATTR InstName Q1
SYMATTR Value Si4410DY
SYMBOL RES 272 216 R0
SYMATTR InstName R1
SYMATTR Value .1
SYMBOL cap 128 280 R270
SYMATTR InstName C1
SYMATTR Value 100p
SYMBOL cap 128 -40 R270
SYMATTR InstName C2
SYMATTR Value 1n
SYMBOL ind2 272 -40 M180
SYMATTR InstName L1
SYMATTR Value 20
SYMATTR SpiceLine Rpar=5K
SYMBOL res -272 120 R90
SYMATTR InstName R2
SYMATTR Value 100K
SYMBOL res -336 184 R90
SYMATTR InstName R3
SYMATTR Value 100K
SYMBOL res -272 248 R90
SYMATTR InstName R4
SYMATTR Value 100K
SYMBOL res -272 -8 R90
SYMATTR InstName R5
SYMATTR Value 100K
SYMBOL cap -368 56 R90
SYMATTR InstName C3
SYMATTR Value .1
SYMBOL res -656 -200 R0
SYMATTR InstName R6
SYMATTR Value 10K
SYMBOL res -656 -40 R0
SYMATTR InstName R7
SYMATTR Value 3K
SYMBOL ind2 352 -152 M0
SYMATTR InstName L2
SYMATTR Value 5
SYMATTR SpiceLine Rpar=5K
SYMBOL ind2 272 -344 R0
SYMATTR InstName L3
SYMATTR Value 5
SYMATTR SpiceLine Rpar=5K
SYMBOL schottky 416 -152 R270
SYMATTR InstName D1
SYMATTR Value 1N5817
SYMBOL cap 528 -152 R0
SYMATTR SpiceLine Rser=25m
SYMATTR InstName C4
SYMATTR Value 50
SYMBOL res 640 -168 R0
SYMATTR InstName Rload
SYMATTR Value 10
SYMBOL VOLTAGE -400 -200 R0
SYMATTR InstName V1
SYMATTR Value 16
SYMBOL POWERPRODUCTS\\LT1725 -80 104 R0
SYMATTR InstName U1