* SPICE netlist
V1 IN 0 12
C1 N009 0 100p
C2 OUT 0 470 x3 Rser=5m
C3 OUT 0 100 x4 Rser=1m
R3 OUT 0 25m
R4 N005 N008 15K
C4 N008 0 .1
XU2 MP_01 N006 0 N010 N009 N001 MP_02 N006 N008 0 OUT N007 N007 NC_03 N005 IN NC_04 NC_05 OUT MP_06 0 MP_07 N002 N003 N001 NC_08 MP_09 MP_10 MP_11 NC_12 N004 0 NC_13 N001 IN LTM4636-1 ;pnba )COMPA)VoutS1-)VFB)TK/SS)HiZReg))COMPB)RunC)SGND)VOUT)SNSP2)SNSP1)PGood)PVCC)RunP)SW)PWM2)VoutS1+))PGND))OVP_Set)CROWBAR)BIAS)OVP_Trip))))PhaseMD)Freq)Mode/PLLIN)Clkout)IntVcc)Vin
R5 N001 N002 86.6K
M1 OUT N003 0 0 BSC016N03MS
C5 N003 0 .01 Rpar=100K
R2 N010 0 7.5K
R1 N004 0 34.8K
.tran 1.2m startup

* LTspice schematic (.asc)
Version 4
SHEET 1 1264 1072
WIRE -312 -536 -632 -536
WIRE -184 -536 -312 -536
WIRE -632 -520 -632 -536
WIRE -440 -504 -520 -504
WIRE -56 -504 -440 -504
WIRE 72 -504 -56 -504
WIRE -312 -472 -312 -536
WIRE -184 -472 -184 -536
WIRE -56 -472 -56 -504
WIRE 72 -472 72 -504
WIRE -632 -424 -632 -440
WIRE -520 -408 -520 -504
WIRE -440 -408 -440 -504
WIRE -408 -408 -440 -408
WIRE 520 -408 328 -408
WIRE 328 -392 328 -408
WIRE -520 -312 -520 -328
WIRE -408 -312 -520 -312
WIRE 216 -312 168 -312
WIRE 280 -312 216 -312
WIRE 216 -296 216 -312
WIRE 328 -280 328 -296
WIRE -520 -216 -552 -216
WIRE -408 -216 -440 -216
WIRE 216 -200 216 -232
WIRE -408 -120 -440 -120
WIRE 248 -24 168 -24
WIRE 360 -24 248 -24
WIRE 520 -24 520 -408
WIRE 520 -24 360 -24
WIRE 632 -24 520 -24
WIRE 248 -8 248 -24
WIRE 360 -8 360 -24
WIRE -408 72 -600 72
WIRE 200 72 168 72
WIRE 248 72 248 56
WIRE 360 72 360 56
WIRE 632 72 632 -24
WIRE 632 72 600 72
WIRE 632 88 632 72
WIRE 216 120 200 72
WIRE 584 120 600 72
WIRE 584 120 216 120
WIRE 584 136 216 136
WIRE -408 168 -456 168
WIRE 200 168 216 136
WIRE 200 168 168 168
WIRE 600 184 584 136
WIRE 632 184 632 168
WIRE 632 184 600 184
WIRE 632 200 632 184
WIRE -600 248 -600 72
WIRE -456 264 -456 168
WIRE -408 264 -456 264
WIRE 216 264 168 264
WIRE -600 360 -600 328
WIRE -408 360 -600 360
WIRE 216 360 216 264
WIRE 216 360 168 360
WIRE -600 376 -600 360
WIRE -600 456 -600 440
WIRE -488 456 -504 456
WIRE -408 456 -424 456
WIRE 184 456 168 456
WIRE 280 456 264 456
WIRE -184 536 -184 520
WIRE -56 536 -56 520
FLAG -632 -424 0
FLAG 280 456 0
FLAG -184 536 0
FLAG -56 536 0
FLAG -552 -216 0
FLAG -600 456 0
FLAG -504 456 0
FLAG 248 72 0
FLAG 632 200 0
FLAG -440 -120 0
FLAG 328 -280 0
FLAG 216 -200 0
FLAG 360 72 0
FLAG 632 -24 OUT
FLAG -632 -536 IN
SYMBOL voltage -632 -536 R0
SYMATTR InstName V1
SYMATTR Value 12
SYMBOL cap -424 440 R90
SYMATTR InstName C1
SYMATTR Value 100p
SYMBOL cap 232 -8 R0
SYMATTR Value 470
SYMATTR Value2 x3
SYMATTR InstName C2
SYMATTR SpiceLine Rser=5m
SYMBOL cap 344 -8 R0
SYMATTR Value 100
SYMATTR Value2 x4
SYMATTR InstName C3
SYMATTR SpiceLine Rser=1m
SYMBOL res 616 72 R0
SYMATTR InstName R3
SYMATTR Value 25m
SYMBOL res -616 232 R0
SYMATTR InstName R4
SYMATTR Value 15K
SYMBOL cap -616 376 R0
SYMATTR InstName C4
SYMATTR Value .1
SYMBOL PowerProducts\\LTM4636-1 -104 24 R0
SYMATTR InstName U2
SYMBOL res -536 -424 R0
SYMATTR InstName R5
SYMATTR Value 86.6K
SYMBOL nmos 280 -392 R0
SYMATTR InstName M1
SYMATTR Value BSC016N03MS
SYMBOL cap 200 -296 R0
SYMATTR Value2 Rpar=100K
SYMATTR Value .01
SYMATTR InstName C5
SYMBOL res 168 472 R270
SYMATTR InstName R2
SYMATTR Value 7.5K
SYMBOL res -424 -232 R90
SYMATTR InstName R1
SYMATTR Value 34.8K