* SPICE netlist
MQ1 N005 N007 N009 N009 Si3440DV
R1 N009 0 0.1
C1 IN 0 5 Rser=100m Rser=100m
L1 IN N005 150 Rser=0.1
L2 0 N001 5 Rser=10m
D1 N001 OUT MBR745
C2 OUT 0 320 Rser=10m
R2 IN N003 100K
C3 IN N002 .1 Rser=10m
R3 N009 N008 4.99K
R4 N002 N004 30.9
R5 IN N006 10K
C4 0 N006 4.7
R6 OUT N010 3.16K
R7 N010 0 1K
C5 N005 0 68p Rser=280
C6 0 N011 22n Rser=26.7K
D2 N002 N013 MBRS1100
D3 N013 N012 MBRS1100
XU1 N011 0 N007 N006 N004 MP_01 N002 MP_02 MP_03 0 N003 NC_04 IN N008 MP_05 N010 LTC4267-3 ;pnba Ith/Run)PGND)Ngate)Pvcc)Rclass))VportN)))Pout)_PWRGD)SigDisA)VportP)Sense))Vfb
V1 IN N012 57
Rload OUT 0 2
.tran 27m startup
K1 L1 L2 0.97

* LTspice schematic (.asc)
Version 4
SHEET 1 2048 720
WIRE -736 -360 -1024 -360
WIRE -608 -360 -736 -360
WIRE -544 -360 -608 -360
WIRE 240 -360 -544 -360
WIRE 336 -360 240 -360
WIRE 512 -360 336 -360
WIRE 688 -360 560 -360
WIRE 816 -360 752 -360
WIRE 912 -360 816 -360
WIRE 1024 -360 912 -360
WIRE 336 -344 336 -360
WIRE 512 -344 512 -360
WIRE 560 -344 560 -360
WIRE 912 -344 912 -360
WIRE 1024 -344 1024 -360
WIRE -544 -296 -544 -360
WIRE -432 -264 -448 -264
WIRE 192 -264 16 -264
WIRE 336 -264 336 -280
WIRE 560 -248 560 -264
WIRE 912 -248 912 -280
WIRE 1024 -248 1024 -264
WIRE 240 -232 240 -360
WIRE -544 -184 -544 -216
WIRE -432 -184 -544 -184
WIRE 64 -184 16 -184
WIRE 192 -184 192 -264
WIRE 192 -184 144 -184
WIRE 512 -152 512 -264
WIRE 640 -152 512 -152
WIRE 240 -104 240 -152
WIRE 240 -104 16 -104
WIRE 288 -104 240 -104
WIRE 384 -104 352 -104
WIRE 512 -104 512 -152
WIRE -1024 -72 -1024 -360
WIRE -736 -72 -736 -360
WIRE -608 -24 -608 -360
WIRE -432 -24 -608 -24
WIRE 464 -24 16 -24
WIRE 640 24 640 -152
WIRE -432 56 -464 56
WIRE 32 56 16 56
WIRE 352 56 272 56
WIRE 512 56 512 -8
WIRE 512 56 432 56
WIRE 512 72 512 56
WIRE -432 136 -496 136
WIRE 64 136 16 136
WIRE 144 136 128 136
WIRE 816 152 816 -360
WIRE 512 168 512 152
WIRE 640 168 640 88
WIRE -464 216 -464 56
WIRE 272 216 272 56
WIRE 272 216 -464 216
WIRE -496 248 -496 136
WIRE 816 248 816 232
WIRE 816 248 -496 248
WIRE 816 264 816 248
WIRE -1024 328 -1024 8
WIRE -960 328 -1024 328
WIRE -832 328 -896 328
WIRE -736 328 -736 -8
WIRE -736 328 -768 328
WIRE 192 328 192 -184
WIRE 192 328 -736 328
WIRE 816 360 816 344
FLAG -448 -264 0
FLAG 512 168 0
FLAG 336 -264 0
FLAG 560 -248 0
FLAG 912 -248 0
FLAG 384 -104 0
FLAG 1024 -248 0
FLAG 816 360 0
FLAG 1024 -360 OUT
FLAG 144 136 0
FLAG 640 168 0
FLAG -1024 -360 IN
FLAG 32 56 0
SYMBOL nmos 464 -104 R0
SYMATTR InstName Q1
SYMATTR Value Si3440DV
SYMBOL res 496 56 R0
SYMATTR InstName R1
SYMATTR Value 0.1
SYMBOL cap 320 -344 R0
SYMATTR InstName C1
SYMATTR Value 5
SYMATTR Value2 Rser=100m
SYMATTR SpiceLine Rser=100m
SYMBOL ind2 496 -360 R0
SYMATTR InstName L1
SYMATTR Value 150
SYMATTR Type ind
SYMATTR SpiceLine Rser=0.1
SYMBOL ind2 576 -248 R180
SYMATTR InstName L2
SYMATTR Value 5
SYMATTR Type ind
SYMATTR SpiceLine Rser=10m
SYMBOL schottky 688 -344 R270
SYMATTR InstName D1
SYMATTR Value MBR745
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL cap 896 -344 R0
SYMATTR InstName C2
SYMATTR Value 320
SYMATTR SpiceLine Rser=10m
SYMBOL res -560 -312 R0
SYMATTR InstName R2
SYMATTR Value 100K
SYMBOL cap -752 -72 R0
SYMATTR SpiceLine Rser=10m
SYMATTR Value .1
SYMATTR InstName C3
SYMBOL res 448 40 R90
SYMATTR InstName R3
SYMATTR Value 4.99K
SYMBOL res 160 -200 R90
SYMATTR InstName R4
SYMATTR Value 30.9
SYMBOL res 224 -248 R0
SYMATTR InstName R5
SYMATTR Value 10K
SYMBOL cap 352 -120 R90
SYMATTR InstName C4
SYMATTR Value 4.7
SYMBOL res 800 136 R0
SYMATTR InstName R6
SYMATTR Value 3.16K
SYMBOL res 800 248 R0
SYMATTR InstName R7
SYMATTR Value 1K
SYMBOL cap 624 24 R0
SYMATTR Value 68p
SYMATTR SpiceLine Rser=280
SYMATTR InstName C5
SYMBOL cap 128 120 R90
SYMATTR InstName C6
SYMATTR Value 22n
SYMATTR SpiceLine Rser=26.7K
SYMBOL schottky -768 312 R90
SYMATTR InstName D2
SYMATTR Value MBRS1100
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL schottky -896 312 R90
SYMATTR InstName D3
SYMATTR Value MBRS1100
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL LTC4267-3 -208 -56 R0
SYMATTR InstName U1
SYMBOL voltage -1024 -88 R0
SYMATTR Value 57
SYMATTR InstName V1
SYMBOL res 1008 -360 R0
SYMATTR InstName Rload
SYMATTR Value 2