* SPICE netlist
MQ1 N005 N013 0 0 Si4420DY
R1 IN N001 1.5Meg
D1 N010 N008 1N5818
C1 N010 0 4.7
D2 0 N005 1N5818
MQ2 IN N003 N005 N005 Si4420DY
L1 N005 OUT 3
C2 OUT 0 470 Rser=50m
R2 N012 N011 2K
C3 N011 0 .005
R3 IN N002 3.3K
V1 IN 0 6
C4 N007 0 .001
C5 N005 N008 .22
XU1 0 N007 OUT N002 N009 N006 N012 0 N001 N014 OUT 0 0 N004 IN N010 N013 0 N005 N005 N003 N008 0 0 N015 OUT N010 N015 LTC3714 ;pnba VID2)Run/SS)Von)Pgood)Vrng)FCB)Ith)SGND)Ion)FB)Vosense)VID3)VID4)EXTVcc)Vin)INTVcc)BG)PGND)Sense+)SW)TG)Boost)VID0)VID1)OP-)OP+)OPVin)OPout
Rload OUT 0 .25
.tran 2.5m startup

* LTspice schematic (.asc)
Version 4
SHEET 1 1328 992
WIRE -552 -496 -664 -496
WIRE -312 -496 -552 -496
WIRE -152 -496 -312 -496
WIRE 248 -496 -152 -496
WIRE -664 -480 -664 -496
WIRE -312 -480 -312 -496
WIRE -552 -448 -552 -496
WIRE 248 -400 248 -496
WIRE -664 -384 -664 -400
WIRE -312 -384 -312 -400
WIRE -152 -384 -152 -496
WIRE -552 -320 -552 -368
WIRE -424 -320 -552 -320
WIRE 200 -320 -40 -320
WIRE -424 -256 -440 -256
WIRE 88 -256 -40 -256
WIRE 248 -256 248 -304
WIRE 248 -256 88 -256
WIRE 312 -256 248 -256
WIRE 360 -256 312 -256
WIRE 472 -256 440 -256
WIRE 520 -256 472 -256
WIRE 600 -256 520 -256
WIRE 664 -256 600 -256
WIRE 520 -240 520 -256
WIRE 664 -240 664 -256
WIRE 312 -224 312 -256
WIRE -424 -192 -440 -192
WIRE 88 -192 88 -256
WIRE 88 -192 -40 -192
WIRE 520 -144 520 -176
WIRE 664 -144 664 -160
WIRE -568 -128 -632 -128
WIRE -424 -128 -504 -128
WIRE 88 -128 -40 -128
WIRE 312 -128 312 -160
WIRE 248 -80 248 -256
WIRE -424 -64 -440 -64
WIRE 24 -64 -40 -64
WIRE 88 -64 24 -64
WIRE -632 0 -648 0
WIRE -536 0 -568 0
WIRE -424 0 -456 0
WIRE 200 0 -40 0
WIRE 88 16 88 -64
WIRE 248 32 248 16
WIRE -424 64 -440 64
WIRE -8 64 -40 64
WIRE -424 128 -440 128
WIRE -8 128 -8 64
WIRE -8 128 -40 128
WIRE 472 128 472 -256
WIRE 472 128 -8 128
WIRE -424 192 -440 192
WIRE -8 192 -40 192
WIRE -424 256 -440 256
WIRE 24 256 24 -64
WIRE 24 256 -40 256
WIRE -424 320 -440 320
WIRE 24 320 -40 320
WIRE -424 384 -440 384
WIRE 600 384 600 -256
WIRE 600 384 -40 384
WIRE -312 464 -312 448
WIRE -152 464 -152 448
WIRE -440 496 -440 384
WIRE 24 496 24 320
WIRE 24 496 -440 496
FLAG -312 464 0
FLAG -152 464 0
FLAG 248 32 0
FLAG 88 80 0
FLAG 312 -128 0
FLAG 664 -144 0
FLAG 520 -144 0
FLAG -648 0 0
FLAG -664 -384 0
FLAG -632 -128 0
FLAG 664 -256 OUT
FLAG -440 320 0
FLAG -440 256 0
FLAG -440 192 0
FLAG -440 128 0
FLAG -440 64 0
FLAG -664 -496 IN
SYMBOL NMOS 200 -80 R0
SYMATTR InstName Q1
SYMATTR Value Si4420DY
SYMBOL RES -328 -496 R0
SYMATTR InstName R1
SYMATTR Value 1.5Meg
SYMBOL schottky 72 -64 M180
SYMATTR InstName D1
SYMATTR Value 1N5818
SYMBOL cap 72 16 R0
SYMATTR Value 4.7
SYMATTR InstName C1
SYMBOL schottky 296 -160 M180
SYMATTR InstName D2
SYMATTR Value 1N5818
SYMBOL nmos 200 -400 R0
SYMATTR InstName Q2
SYMATTR Value Si4420DY
SYMBOL ind 344 -240 R270
SYMATTR InstName L1
SYMATTR Value 3
SYMBOL polcap 504 -240 R0
SYMATTR SpiceLine Rser=50m
SYMATTR InstName C2
SYMATTR Value 470
SYMBOL res -440 -16 R90
SYMATTR InstName R2
SYMATTR Value 2K
SYMBOL cap -568 -16 R90
SYMATTR InstName C3
SYMATTR Value .005
SYMBOL res -568 -464 R0
SYMATTR InstName R3
SYMATTR Value 3.3K
SYMBOL VOLTAGE -664 -496 R0
SYMATTR InstName V1
SYMATTR Value 6
SYMBOL cap -504 -144 R90
SYMATTR InstName C4
SYMATTR Value .001
SYMBOL cap 72 -192 R0
SYMATTR Value .22
SYMATTR InstName C5
SYMBOL POWERPRODUCTS\\LTC3714 -232 -32 R0
SYMATTR InstName U1
SYMBOL res 648 -256 R0
SYMATTR InstName Rload
SYMATTR Value .25