* SPICE netlist
V1 N001 0 24
C1 0 N002 10
C2 N004 N008 .22
D1 N002 N004 1N5819
MQ1 N001 N006 N008 N008 Si7884DP
MQ2 N008 N012 0 0 Si7884DP
L1 N008 N009 2.2
R1 N009 N010 2.5m
R2 N010 N015 88.7K
R3 N015 0 12.1K
C3 N010 0 300
C4 N014 0 5.6n Rser=39.2K
C5 N013 0 .01
R4 N007 0 82.5K
V2 N003 0 5
V3 N011 0 1
C6 N005 0 .01
XU2 0 N003 N005 N005 MP_01 N011 MP_02 N013 MP_03 N015 N009 N010 MP_04 N014 N007 MP_05 MP_06 MP_07 MP_08 MP_09 MP_10 MP_11 N006 N008 N004 N012 N002 N001 NC_12 LT3741 ;pnba GND)EN/UVLO)Vref)CTRL2))CTRL1))SS))FB)Sense+)Sense-))VC)Rt))))))))HG)SW)CBOOT)LG)Vcc_int)Vin)SYNC
.tran 2.25m startup

* LTspice schematic (.asc)
Version 4
SHEET 1 1072 880
WIRE -88 -424 -88 -440
WIRE -216 -344 -536 -344
WIRE 200 -344 -216 -344
WIRE -536 -328 -536 -344
WIRE -88 -328 -88 -360
WIRE 72 -328 -88 -328
WIRE -216 -312 -216 -344
WIRE -88 -312 -88 -328
WIRE -424 -248 -440 -248
WIRE -328 -248 -344 -248
WIRE 72 -248 72 -264
WIRE 72 -248 24 -248
WIRE -536 -232 -536 -248
WIRE 200 -232 200 -344
WIRE -424 -152 -456 -152
WIRE -344 -152 -360 -152
WIRE -328 -152 -344 -152
WIRE 152 -152 24 -152
WIRE 72 -136 72 -248
WIRE -344 -104 -344 -152
WIRE -344 -104 -504 -104
WIRE -424 -56 -456 -56
WIRE -328 -56 -344 -56
WIRE 72 -56 72 -72
WIRE 72 -56 24 -56
WIRE 200 -56 200 -136
WIRE 200 -56 72 -56
WIRE 232 -56 200 -56
WIRE 344 -56 312 -56
WIRE 360 -56 344 -56
WIRE 456 -56 440 -56
WIRE 488 -56 456 -56
WIRE 536 -56 488 -56
WIRE 200 -40 200 -56
WIRE 536 -40 536 -56
WIRE -424 40 -440 40
WIRE -328 40 -344 40
WIRE 152 40 24 40
WIRE 536 40 536 24
WIRE 200 72 200 56
WIRE -504 136 -504 -104
WIRE -328 136 -504 136
WIRE 344 136 344 -56
WIRE 344 136 24 136
WIRE -440 232 -472 232
WIRE -328 232 -376 232
WIRE 456 232 456 -56
WIRE 456 232 24 232
WIRE 488 232 488 -56
WIRE -440 328 -472 328
WIRE -328 328 -376 328
WIRE 488 328 488 312
WIRE 488 328 24 328
WIRE 488 344 488 328
WIRE -216 408 -216 392
WIRE 488 440 488 424
FLAG -216 408 0
FLAG -536 -232 0
FLAG -88 -440 0
FLAG 200 72 0
FLAG 488 440 0
FLAG 536 40 0
FLAG -472 232 0
FLAG -472 328 0
FLAG -456 -56 0
FLAG -440 -248 0
FLAG -440 40 0
FLAG -456 -152 0
SYMBOL voltage -536 -344 R0
SYMATTR InstName V1
SYMATTR Value 24
SYMBOL cap -104 -424 R0
SYMATTR InstName C1
SYMATTR Value 10
SYMBOL cap 56 -136 R0
SYMATTR InstName C2
SYMATTR Value .22
SYMBOL schottky 56 -328 R0
SYMATTR InstName D1
SYMATTR Value 1N5819
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL nmos 152 -232 R0
SYMATTR InstName Q1
SYMATTR Value Si7884DP
SYMBOL nmos 152 -40 R0
SYMATTR InstName Q2
SYMATTR Value Si7884DP
SYMBOL ind 216 -40 R270
SYMATTR InstName L1
SYMATTR Value 2.2
SYMBOL res 344 -40 R270
SYMATTR InstName R1
SYMATTR Value 2.5m
SYMBOL res 472 216 R0
SYMATTR InstName R2
SYMATTR Value 88.7K
SYMBOL res 472 328 R0
SYMATTR InstName R3
SYMATTR Value 12.1K
SYMBOL cap 520 -40 R0
SYMATTR InstName C3
SYMATTR Value 300
SYMBOL cap -376 312 R90
SYMATTR InstName C4
SYMATTR Value 5.6n
SYMATTR SpiceLine Rser=39.2K
SYMBOL cap -376 216 R90
SYMATTR InstName C5
SYMATTR Value .01
SYMBOL res -328 -72 R90
SYMATTR InstName R4
SYMATTR Value 82.5K
SYMBOL voltage -328 -248 R90
SYMATTR InstName V2
SYMATTR Value 5
SYMBOL voltage -328 40 R90
SYMATTR InstName V3
SYMATTR Value 1
SYMBOL cap -360 -168 R90
SYMATTR InstName C6
SYMATTR Value .01
SYMBOL LT3741 -152 40 R0
SYMATTR InstName U2