* SPICE netlist
MQ1 IN N003 N005 N005 STD30NF06L
L1 N005 OUT .68 Rser=1.5m
C1 OUT 0 660
R1 OUT N009 62.5K
R2 N009 0 20K
C2 N004 N005 .1
C3 N001 0 4.7
C4 N010 0 3300p Rser=1K Cpar=100p
C5 N006 0 .002
V1 IN 0 12
D1 N001 N004 CMDSH2-3
MQ2 N005 N007 0 0 STD30NF06L
C6 OUT N009 47p
D2 0 N005 MBRS340
R3 N005 N011 10K
C7 N011 OUT .22 Rpar=13K
C8 N008 0 .1 Rpar=80K
Rload OUT 0 .22
XU1 NC_01 N008 NC_02 N006 N010 N009 OUT N011 N002 0 N007 N001 IN N004 N003 N005 LTC3851-1 ;pnba Mode/PLLIN)Freq/PLLFLTR)Run)TK/SS)Ith)Vfb)Sense-)Sense+)Pgood)GND)BG)IntVcc)Vin)Boost)TG)SW
R4 N001 N002 100K
.tran 2m startup

* LTspice schematic (.asc)
Version 4
SHEET 1 1648 752
WIRE -72 -376 -808 -376
WIRE -808 -296 -808 -376
WIRE -632 -296 -808 -296
WIRE -552 -296 -632 -296
WIRE 40 -296 -104 -296
WIRE 248 -296 40 -296
WIRE -808 -280 -808 -296
WIRE 40 -280 40 -296
WIRE 248 -280 248 -296
WIRE -808 -200 -808 -216
WIRE -632 -200 -632 -216
WIRE -552 -200 -632 -200
WIRE -8 -200 -104 -200
WIRE 248 -184 248 -200
WIRE -72 -104 -72 -312
WIRE -72 -104 -104 -104
WIRE -40 -104 -72 -104
WIRE 40 -104 40 -184
WIRE 40 -104 24 -104
WIRE 40 -8 40 -104
WIRE 40 -8 -104 -8
WIRE 216 -8 40 -8
WIRE 344 -8 216 -8
WIRE 360 -8 344 -8
WIRE 456 -8 440 -8
WIRE 488 -8 456 -8
WIRE 616 -8 488 -8
WIRE 712 -8 616 -8
WIRE 824 -8 712 -8
WIRE 40 8 40 -8
WIRE 712 8 712 -8
WIRE 824 8 824 -8
WIRE 216 40 216 -8
WIRE 488 56 488 -8
WIRE 616 56 616 -8
WIRE -712 88 -760 88
WIRE -552 88 -648 88
WIRE -8 88 -104 88
WIRE 712 104 712 72
WIRE 824 104 824 88
WIRE 40 120 40 104
WIRE 216 120 216 104
WIRE -648 184 -760 184
WIRE -552 184 -584 184
WIRE 488 184 488 136
WIRE 488 184 -104 184
WIRE 616 184 616 120
WIRE 616 184 488 184
WIRE 488 200 488 184
WIRE -744 280 -760 280
WIRE -552 280 -680 280
WIRE -56 280 -104 280
WIRE 88 280 -56 280
WIRE 344 280 344 -8
WIRE 344 280 168 280
WIRE -56 296 -56 280
WIRE 488 296 488 280
WIRE -552 376 -584 376
WIRE -56 376 -56 360
WIRE -56 376 -104 376
WIRE 456 376 456 -8
WIRE 456 376 -56 376
FLAG -584 376 0
FLAG 40 120 0
FLAG 712 104 0
FLAG 824 104 0
FLAG 488 296 0
FLAG 824 -8 OUT
FLAG -808 -200 0
FLAG -760 280 0
FLAG -760 88 0
FLAG 248 -184 0
FLAG 216 120 0
FLAG 248 -296 IN
FLAG -760 184 0
SYMBOL nmos -8 -280 R0
SYMATTR InstName Q1
SYMATTR Value STD30NF06L
SYMBOL ind 344 8 R270
SYMATTR InstName L1
SYMATTR Value .68
SYMATTR SpiceLine Rser=1.5m
SYMBOL cap 696 8 R0
SYMATTR InstName C1
SYMATTR Value 660
SYMBOL res 472 40 R0
SYMATTR InstName R1
SYMATTR Value 62.5K
SYMBOL res 472 184 R0
SYMATTR InstName R2
SYMATTR Value 20K
SYMBOL cap -40 -88 R270
SYMATTR InstName C2
SYMATTR Value .1
SYMBOL cap -824 -280 R0
SYMATTR InstName C3
SYMATTR Value 4.7
SYMBOL cap -680 264 R90
SYMATTR InstName C4
SYMATTR Value 3300p
SYMATTR SpiceLine Rser=1K Cpar=100p
SYMBOL cap -648 72 R90
SYMATTR InstName C5
SYMATTR Value .002
SYMBOL voltage 248 -296 R0
SYMATTR Value 12
SYMATTR InstName V1
SYMBOL schottky -88 -376 R0
SYMATTR Value CMDSH2-3
SYMATTR InstName D1
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL nmos -8 8 R0
SYMATTR InstName Q2
SYMATTR Value STD30NF06L
SYMBOL cap 600 56 R0
SYMATTR InstName C6
SYMATTR Value 47p
SYMBOL schottky 200 104 M180
SYMATTR InstName D2
SYMATTR Value MBRS340
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL res 184 264 R90
SYMATTR InstName R3
SYMATTR Value 10K
SYMBOL cap -72 296 R0
SYMATTR Value .22
SYMATTR SpiceLine Rpar=13K
SYMATTR InstName C7
SYMBOL cap -584 168 R90
SYMATTR InstName C8
SYMATTR Value .1
SYMATTR SpiceLine Rpar=80K
SYMBOL res 808 -8 R0
SYMATTR InstName Rload
SYMATTR Value .22
SYMBOL PowerProducts\\LTC3851-1 -328 40 R0
SYMATTR InstName U1
SYMBOL res -648 -312 R0
SYMATTR InstName R4
SYMATTR Value 100K