* SPICE netlist
MQ1 IN N007 N008 N008 Si4886DY
D1 N002 N005 MBRS140
C1 N005 N008 1
R1 IN N001 1Meg
R2 N010 N009 82.5K
C2 N009 0 680p
D2 0 N008 MBRS1100
L1 N008 N011 15 Rpar=2K
R3 N011 OUT 15m
R4 N006 0 20K
R5 N006 OUT 174K
R6 N003 OUT 200K
C3 N004 N003 {.0015/10}
C4 OUT 0 100
V1 IN 0 36
D3 OUT N002 1N4148
XU1 IN MP_01 N001 N004 N006 N006 N010 OUT N011 0 MP_02 N002 MP_03 N008 N007 N005 0 LT3724 ;pnba Vin))_SHDN)Css)Burst_EN)FB)Vc)Sense-)Sense+)PGND))Vcc))SW)TG)Boost)SGND
Rload OUT 0 50
.tran 1.5m startup

* LTspice schematic (.asc)
Version 4
SHEET 1 1040 656
WIRE -312 -328 -424 -328
WIRE -104 -328 -312 -328
WIRE 248 -328 -104 -328
WIRE -424 -312 -424 -328
WIRE -312 -312 -312 -328
WIRE -104 -232 -104 -328
WIRE -424 -216 -424 -232
WIRE -312 -184 -312 -232
WIRE -264 -184 -312 -184
WIRE 88 -184 56 -184
WIRE 280 -184 88 -184
WIRE 376 -184 344 -184
WIRE 424 -184 376 -184
WIRE 520 -184 424 -184
WIRE 424 -168 424 -184
WIRE 520 -168 520 -184
WIRE -504 -104 -520 -104
WIRE -376 -104 -424 -104
WIRE -264 -104 -312 -104
WIRE 88 -104 88 -120
WIRE 88 -104 56 -104
WIRE 248 -104 248 -328
WIRE 424 -72 424 -104
WIRE 520 -72 520 -88
WIRE -456 -24 -472 -24
WIRE -312 -24 -376 -24
WIRE -264 -24 -312 -24
WIRE 200 -24 56 -24
WIRE -520 56 -520 -104
WIRE -504 56 -520 56
WIRE -312 56 -312 -24
WIRE -312 56 -424 56
WIRE -264 56 -312 56
WIRE 88 56 88 -40
WIRE 88 56 56 56
WIRE 248 56 248 -8
WIRE 248 56 88 56
WIRE 88 72 88 56
WIRE 248 88 248 56
WIRE -456 136 -472 136
WIRE -376 136 -392 136
WIRE -264 136 -296 136
WIRE 88 136 56 136
WIRE 88 152 88 136
WIRE -264 216 -312 216
WIRE 248 216 248 168
WIRE 248 216 56 216
WIRE 248 232 248 216
WIRE -104 280 -104 264
WIRE -520 328 -520 56
WIRE -312 328 -312 216
WIRE -312 328 -520 328
WIRE 248 328 248 312
WIRE 248 328 -312 328
WIRE 376 328 376 -184
WIRE 376 328 248 328
FLAG 88 152 0
FLAG -472 136 0
FLAG -104 280 0
FLAG -472 -24 0
FLAG 424 -72 0
FLAG 520 -72 0
FLAG -424 -216 0
FLAG 520 -184 OUT
FLAG -424 -328 IN
SYMBOL nmos 200 -104 R0
SYMATTR InstName Q1
SYMATTR Value Si4886DY
SYMBOL schottky 72 -184 R0
SYMATTR InstName D1
SYMATTR Value MBRS140
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL cap 72 -104 R0
SYMATTR InstName C1
SYMATTR Value 1
SYMBOL res -328 -328 R0
SYMATTR InstName R1
SYMATTR Value 1Meg
SYMBOL res -280 120 R90
SYMATTR InstName R2
SYMATTR Value 82.5K
SYMBOL cap -392 120 R90
SYMATTR InstName C2
SYMATTR Value 680p
SYMBOL schottky 72 136 M180
SYMATTR InstName D2
SYMATTR Value MBRS1100
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL ind 232 72 R0
SYMATTR InstName L1
SYMATTR Value 15
SYMATTR SpiceLine Rpar=2K
SYMBOL res 232 216 R0
SYMATTR InstName R3
SYMATTR Value 15m
SYMBOL res -360 -40 R90
SYMATTR InstName R4
SYMATTR Value 20K
SYMBOL res -408 40 R90
SYMATTR InstName R5
SYMATTR Value 174K
SYMBOL res -408 -120 R90
SYMATTR InstName R6
SYMATTR Value 200K
SYMBOL cap -312 -120 R90
SYMATTR InstName C3
SYMATTR Value {.0015/10}
SYMBOL cap 408 -168 R0
SYMATTR InstName C4
SYMATTR Value 100
SYMBOL voltage -424 -328 R0
SYMATTR Value 36
SYMATTR InstName V1
SYMBOL diode 344 -200 R90
SYMATTR InstName D3
SYMATTR Value 1N4148
SYMBOL PowerProducts\\LT3724 -104 8 R0
SYMATTR InstName U1
SYMBOL res 504 -184 R0
SYMATTR InstName Rload
SYMATTR Value 50