* 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 LTC4267-1 ;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 2064 720
WIRE -728 -360 -1032 -360
WIRE -600 -360 -728 -360
WIRE -536 -360 -600 -360
WIRE 248 -360 -536 -360
WIRE 344 -360 248 -360
WIRE 520 -360 344 -360
WIRE 696 -360 568 -360
WIRE 824 -360 760 -360
WIRE 920 -360 824 -360
WIRE 1032 -360 920 -360
WIRE 344 -344 344 -360
WIRE 520 -344 520 -360
WIRE 568 -344 568 -360
WIRE 920 -344 920 -360
WIRE 1032 -344 1032 -360
WIRE -536 -296 -536 -360
WIRE -424 -264 -440 -264
WIRE 200 -264 24 -264
WIRE 344 -264 344 -280
WIRE 568 -248 568 -264
WIRE 920 -248 920 -280
WIRE 1032 -248 1032 -264
WIRE 248 -232 248 -360
WIRE -536 -184 -536 -216
WIRE -424 -184 -536 -184
WIRE 72 -184 24 -184
WIRE 200 -184 200 -264
WIRE 200 -184 152 -184
WIRE 520 -184 520 -264
WIRE 616 -184 520 -184
WIRE 616 -168 616 -184
WIRE 248 -104 248 -152
WIRE 248 -104 24 -104
WIRE 296 -104 248 -104
WIRE 392 -104 360 -104
WIRE 520 -104 520 -184
WIRE 616 -88 616 -104
WIRE -1032 -72 -1032 -360
WIRE -728 -72 -728 -360
WIRE -600 -24 -600 -360
WIRE -424 -24 -600 -24
WIRE 472 -24 24 -24
WIRE -424 56 -456 56
WIRE 40 56 24 56
WIRE 360 56 280 56
WIRE 520 56 520 -8
WIRE 520 56 440 56
WIRE 520 72 520 56
WIRE -424 136 -488 136
WIRE 72 136 24 136
WIRE 152 136 136 136
WIRE 824 152 824 -360
WIRE 520 168 520 152
WIRE -456 216 -456 56
WIRE 280 216 280 56
WIRE 280 216 -456 216
WIRE -488 248 -488 136
WIRE 824 248 824 232
WIRE 824 248 -488 248
WIRE 824 264 824 248
WIRE -1032 328 -1032 8
WIRE -952 328 -1032 328
WIRE -824 328 -888 328
WIRE -728 328 -728 -8
WIRE -728 328 -760 328
WIRE 200 328 200 -184
WIRE 200 328 -728 328
WIRE 824 360 824 344
FLAG -440 -264 0
FLAG 520 168 0
FLAG 344 -264 0
FLAG 568 -248 0
FLAG 920 -248 0
FLAG 392 -104 0
FLAG 1032 -248 0
FLAG 824 360 0
FLAG 1032 -360 OUT
FLAG 152 136 0
FLAG 616 -88 0
FLAG -1032 -360 IN
FLAG 40 56 0
SYMBOL nmos 472 -104 R0
SYMATTR InstName Q1
SYMATTR Value Si3440DV
SYMBOL res 504 56 R0
SYMATTR InstName R1
SYMATTR Value 0.1
SYMBOL cap 328 -344 R0
SYMATTR InstName C1
SYMATTR Value 5
SYMATTR Value2 Rser=100m
SYMATTR SpiceLine Rser=100m
SYMBOL ind2 504 -360 R0
SYMATTR InstName L1
SYMATTR Value 150
SYMATTR Type ind
SYMATTR SpiceLine Rser=0.1
SYMBOL ind2 584 -248 R180
SYMATTR InstName L2
SYMATTR Value 5
SYMATTR Type ind
SYMATTR SpiceLine Rser=10m
SYMBOL schottky 696 -344 R270
SYMATTR InstName D1
SYMATTR Value MBR745
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL cap 904 -344 R0
SYMATTR InstName C2
SYMATTR Value 320
SYMATTR SpiceLine Rser=10m
SYMBOL res -552 -312 R0
SYMATTR InstName R2
SYMATTR Value 100K
SYMBOL cap -744 -72 R0
SYMATTR SpiceLine Rser=10m
SYMATTR Value .1
SYMATTR InstName C3
SYMBOL res 456 40 R90
SYMATTR InstName R3
SYMATTR Value 4.99K
SYMBOL res 168 -200 R90
SYMATTR InstName R4
SYMATTR Value 30.9
SYMBOL res 232 -248 R0
SYMATTR InstName R5
SYMATTR Value 10K
SYMBOL cap 360 -120 R90
SYMATTR InstName C4
SYMATTR Value 4.7
SYMBOL res 808 136 R0
SYMATTR InstName R6
SYMATTR Value 3.16K
SYMBOL res 808 248 R0
SYMATTR InstName R7
SYMATTR Value 1K
SYMBOL cap 600 -168 R0
SYMATTR Value 68p
SYMATTR SpiceLine Rser=280
SYMATTR InstName C5
SYMBOL cap 136 120 R90
SYMATTR InstName C6
SYMATTR Value 22n
SYMATTR SpiceLine Rser=26.7K
SYMBOL schottky -760 312 R90
SYMATTR InstName D2
SYMATTR Value MBRS1100
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL schottky -888 312 R90
SYMATTR InstName D3
SYMATTR Value MBRS1100
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL LTC4267-1 -200 -56 R0
SYMATTR InstName U1
SYMBOL voltage -1032 -88 R0
SYMATTR Value 57
SYMATTR InstName V1
SYMBOL res 1016 -360 R0
SYMATTR InstName Rload
SYMATTR Value 2