* SPICE netlist
MQ1 IN N003 N005 N005 RJK0305DPB
L1 N005 N006 4.7 Rser=1.5m
C1 OUT 0 150 Rser=5m
R1 OUT N012 100K
R2 N012 0 31.6K
C2 N004 N005 0.1
C3 N001 0 4.7
C4 N010 0 2200p
C5 N009 0 10n
V1 IN 0 12
D1 N001 N004 CMDSH2-3
MQ2 N005 N008 0 0 RJK0301DPB
Rload OUT 0 0.66
XU1 OUT N007 N006 NC_01 NC_02 0 N002 IN N001 NC_03 0 N004 N003 N005 N008 NC_04 N009 N011 N012 LTC3891 ;pnba SENSE-)FREQ)SENSE+)PGOOD)PLLIN/MODE)SGND)RUN)VIN)INTVcc)EXTVcc)PGND)BOOST)TG)SW)BG)ILIM)TRACK/SS)ITH)VFB
R4 N006 OUT 8m
R3 N007 0 41.2K
V2 N002 0 3.3
R5 N011 N010 10K
.tran 2m startup

* LTspice schematic (.asc)
Version 4
SHEET 1 1360 912
WIRE 136 -456 -376 -456
WIRE 312 -456 136 -456
WIRE 312 -440 312 -456
WIRE -280 -424 -344 -424
WIRE -56 -424 -280 -424
WIRE -344 -408 -344 -424
WIRE 312 -344 312 -360
WIRE -344 -328 -344 -344
WIRE -56 -328 -56 -424
WIRE 136 -312 136 -456
WIRE -376 -296 -376 -456
WIRE -280 -296 -280 -424
WIRE -472 -232 -584 -232
WIRE 88 -232 -88 -232
WIRE -584 -216 -584 -232
WIRE -56 -136 -56 -264
WIRE -56 -136 -88 -136
WIRE -584 -120 -584 -136
WIRE -56 -120 -56 -136
WIRE -56 -40 -56 -56
WIRE -56 -40 -88 -40
WIRE 136 -40 136 -216
WIRE 136 -40 -56 -40
WIRE 184 -40 136 -40
WIRE 312 -40 264 -40
WIRE 328 -40 312 -40
WIRE 424 -40 408 -40
WIRE 472 -40 424 -40
WIRE 520 -40 472 -40
WIRE 680 -40 520 -40
WIRE 136 -24 136 -40
WIRE 520 -24 520 -40
WIRE 680 -24 680 -40
WIRE -568 56 -584 56
WIRE -472 56 -488 56
WIRE 88 56 -88 56
WIRE 520 72 520 40
WIRE 680 72 680 56
WIRE 136 88 136 72
WIRE 312 152 312 -40
WIRE 312 152 -88 152
WIRE -568 248 -584 248
WIRE -472 248 -504 248
WIRE 424 248 424 -40
WIRE 424 248 -88 248
WIRE 472 248 472 -40
WIRE -664 344 -680 344
WIRE -568 344 -600 344
WIRE -472 344 -488 344
WIRE 472 344 472 328
WIRE 472 344 -88 344
WIRE 472 360 472 344
WIRE -360 424 -360 408
WIRE -200 424 -200 408
WIRE 472 456 472 440
FLAG 136 88 0
FLAG 520 72 0
FLAG 680 72 0
FLAG 472 456 0
FLAG 680 -40 OUT
FLAG -344 -328 0
FLAG -680 344 0
FLAG -584 248 0
FLAG 312 -344 0
FLAG 312 -456 IN
FLAG -360 424 0
FLAG -200 424 0
FLAG -584 56 0
FLAG -584 -120 0
SYMBOL nmos 88 -312 R0
SYMATTR InstName Q1
SYMATTR Value RJK0305DPB
SYMBOL ind 168 -24 R270
SYMATTR InstName L1
SYMATTR Value 4.7
SYMATTR SpiceLine Rser=1.5m
SYMBOL cap 504 -24 R0
SYMATTR Value 150
SYMATTR SpiceLine Rser=5m
SYMATTR InstName C1
SYMBOL res 456 232 R0
SYMATTR InstName R1
SYMATTR Value 100K
SYMBOL res 456 344 R0
SYMATTR InstName R2
SYMATTR Value 31.6K
SYMBOL cap -72 -120 R0
SYMATTR InstName C2
SYMATTR Value 0.1
SYMBOL cap -360 -408 R0
SYMATTR InstName C3
SYMATTR Value 4.7
SYMBOL cap -600 328 R90
SYMATTR InstName C4
SYMATTR Value 2200p
SYMBOL cap -504 232 R90
SYMATTR InstName C5
SYMATTR Value 10n
SYMBOL voltage 312 -456 R0
SYMATTR Value 12
SYMATTR InstName V1
SYMBOL schottky -72 -328 R0
SYMATTR Value CMDSH2-3
SYMATTR InstName D1
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL nmos 88 -24 R0
SYMATTR InstName Q2
SYMATTR Value RJK0301DPB
SYMBOL res 664 -40 R0
SYMATTR InstName Rload
SYMATTR Value 0.66
SYMBOL LTC3891 -280 56 R0
SYMATTR InstName U1
SYMBOL res 312 -24 R270
SYMATTR InstName R4
SYMATTR Value 8m
SYMBOL res -472 40 R90
SYMATTR InstName R3
SYMATTR Value 41.2K
SYMBOL voltage -584 -232 R0
SYMATTR Value 3.3
SYMATTR InstName V2
SYMBOL res -472 328 R90
SYMATTR InstName R5
SYMATTR Value 10K