* SPICE netlist
XU1 MP_01 N006 N010 N006 N004 N015 N013 0 N014 MP_02 N009 OUT N003 N005 0 N011 IN N008 N007 N001 LT1339 ;pnba )5Vref)Ct)SL/ADJ)Iave)SS)Vc)SGND)FB))Sense+)Sense-)Run/SHDN)Phase)PGND)BG)12Vin)TS)TG)Boost
C1 N015 0 .01
MQ1 N008 N011 0 0 Si7884DP
MQ2 N002 N007 N008 N008 Si7884DP
L1 N008 N009 10
R1 N009 OUT 5m
C2 OUT 0 2200 Rser=5m
C3 N001 N008 1
D1 IN N001 1N5819
R2 N014 OUT 3K
R3 N014 0 1K
V1 IN 0 12
R4 N013 N012 10K
C4 N012 0 1000p
C5 N010 0 2200p
R5 N010 N006 10K
C6 N004 0 2200p
R6 IN N003 100K
V2 N002 0 28
Rload OUT 0 .25
.tran 3m startup

* LTspice schematic (.asc)
Version 4
SHEET 1 1200 720
WIRE -440 -344 -552 -344
WIRE -152 -344 -440 -344
WIRE -56 -344 -152 -344
WIRE 88 -344 8 -344
WIRE -552 -328 -552 -344
WIRE -440 -328 -440 -344
WIRE -152 -296 -152 -344
WIRE 328 -248 184 -248
WIRE -552 -232 -552 -248
WIRE -440 -232 -440 -248
WIRE -344 -232 -440 -232
WIRE 88 -232 88 -344
WIRE 88 -232 40 -232
WIRE 328 -232 328 -248
WIRE 88 -200 88 -232
WIRE 184 -184 184 -248
WIRE -424 -168 -440 -168
WIRE -344 -168 -360 -168
WIRE 56 -168 40 -168
WIRE 328 -136 328 -152
WIRE -360 -104 -440 -104
WIRE -344 -104 -360 -104
WIRE 136 -104 40 -104
WIRE -440 -88 -440 -104
WIRE 88 -72 88 -136
WIRE 184 -72 184 -88
WIRE 184 -72 88 -72
WIRE 216 -72 184 -72
WIRE 312 -72 296 -72
WIRE 328 -72 312 -72
WIRE 424 -72 408 -72
WIRE 472 -72 424 -72
WIRE 600 -72 472 -72
WIRE 184 -56 184 -72
WIRE 472 -56 472 -72
WIRE 600 -56 600 -72
WIRE -360 -40 -360 -104
WIRE -344 -40 -360 -40
WIRE 88 -40 88 -72
WIRE 88 -40 40 -40
WIRE -520 24 -600 24
WIRE -440 24 -440 -8
WIRE -440 24 -456 24
WIRE -344 24 -440 24
WIRE 136 24 40 24
WIRE 472 40 472 8
WIRE 600 40 600 24
WIRE 184 56 184 40
WIRE -584 88 -600 88
WIRE -456 88 -520 88
WIRE -344 88 -376 88
WIRE 312 88 312 -72
WIRE 312 88 40 88
WIRE -520 152 -600 152
WIRE -376 152 -440 152
WIRE -344 152 -376 152
WIRE 424 152 424 -72
WIRE 424 152 40 152
WIRE -280 232 -280 216
WIRE -152 232 -152 216
WIRE -24 232 -24 216
WIRE -280 312 -280 296
WIRE -376 344 -376 152
WIRE 168 344 -376 344
WIRE 424 344 424 152
WIRE 424 344 248 344
FLAG 472 40 0
FLAG -152 232 0
FLAG -280 312 0
FLAG -24 232 0
FLAG 184 56 0
FLAG -600 152 0
FLAG 600 40 0
FLAG -552 -232 0
FLAG -600 88 0
FLAG -600 24 0
FLAG -440 -168 0
FLAG 328 -136 0
FLAG 600 -72 OUT
FLAG -552 -344 IN
SYMBOL POWERPRODUCTS\\LT1339 -152 -40 R0
SYMATTR InstName U1
SYMBOL cap -296 232 R0
SYMATTR InstName C1
SYMATTR Value .01
SYMBOL NMOS 136 -56 R0
SYMATTR InstName Q1
SYMATTR Value Si7884DP
SYMBOL nmos 136 -184 R0
SYMATTR InstName Q2
SYMATTR Value Si7884DP
SYMBOL ind 200 -56 R270
SYMATTR InstName L1
SYMATTR Value 10
SYMBOL RES 312 -56 R270
SYMATTR InstName R1
SYMATTR Value 5m
SYMBOL polcap 456 -56 R0
SYMATTR InstName C2
SYMATTR Value 2200
SYMATTR SpiceLine Rser=5m
SYMBOL polcap 72 -200 R0
SYMATTR InstName C3
SYMATTR Value 1
SYMBOL schottky -56 -360 M90
SYMATTR InstName D1
SYMATTR Value 1N5819
SYMBOL res 152 360 R270
SYMATTR InstName R2
SYMATTR Value 3K
SYMBOL res -424 136 R90
SYMATTR InstName R3
SYMATTR Value 1K
SYMBOL VOLTAGE -552 -344 R0
SYMATTR InstName V1
SYMATTR Value 12
SYMBOL res -360 72 R90
SYMATTR InstName R4
SYMATTR Value 10K
SYMBOL cap -520 72 R90
SYMATTR InstName C4
SYMATTR Value 1000p
SYMBOL cap -456 8 R90
SYMATTR InstName C5
SYMATTR Value 2200p
SYMBOL res -456 8 M180
SYMATTR InstName R5
SYMATTR Value 10K
SYMBOL cap -360 -184 R90
SYMATTR InstName C6
SYMATTR Value 2200p
SYMBOL res -456 -344 R0
SYMATTR InstName R6
SYMATTR Value 100K
SYMBOL voltage 328 -248 R0
SYMATTR InstName V2
SYMATTR Value 28
SYMBOL res 584 -72 R0
SYMATTR InstName Rload
SYMATTR Value .25