* SPICE netlist
V1 IN 0 23
C1 N009 N010 .1
L1 N010 N011 7.2 Rpar=2K
R1 N011 OUT2 10m
D1 N001 N009 BAT54
R2 OUT2 N015 193K
R3 N015 0 20K
C2 0 N019 .001
MQ3 IN N004 N007 N007 Si7884DP
C4 N008 N007 .1
L2 N007 N006 3.3 Rpar=2K
R5 N006 OUT1 7m
D2 N001 N008 BAT54
R6 OUT1 N014 62.5K
R7 N014 0 20K
C5 0 N018 .001
C6 N001 0 1
C7 OUT2 0 150 Rser=50m
C8 OUT1 0 150 Rser=50m
C9 N016 0 680p Rser=15K
Rload1 OUT1 0 1.5
Rload2 OUT2 0 5
MQ1 N007 N012 0 0 Si7884DP
MQ2 IN N005 N010 N010 Si7884DP
MQ4 N010 N013 0 0 Si7884DP
V2 RUN 0 5
C3 N017 0 680p Rser=15K
XU1 N016 N014 N006 OUT1 0 0 0 RUN RUN OUT2 N011 N015 N017 N019 N005 N010 N009 N013 N001 N002 0 IN N012 N008 N007 N004 N003 N018 LTC3857-1 ;pnba Ith1)Vfb1)Sense1+)Sense1-)Freq)PLLIN/Mode)SGND)Run1)Run2)Sense2-)Sense2+)Vfb2)Ith2)Track/SS2)TG2)SW2)Boost2)BG2)INTVcc)EXTVcc)PGND)Vin)BG1)Boost1)SW1)TG1)Pgood1)Track/SS1
R4 N003 RUN 100K
.tran 1m startup

* LTspice schematic (.asc)
Version 4
SHEET 1 1648 1184
WIRE -504 -592 -632 -592
WIRE -120 -592 -504 -592
WIRE 504 -592 -120 -592
WIRE -632 -576 -632 -592
WIRE 312 -576 -312 -576
WIRE 616 -576 312 -576
WIRE -344 -560 -424 -560
WIRE 24 -560 -344 -560
WIRE 344 -560 24 -560
WIRE 616 -560 616 -576
WIRE -424 -544 -424 -560
WIRE -120 -528 -120 -592
WIRE 24 -528 24 -560
WIRE 168 -528 168 -544
WIRE -632 -480 -632 -496
WIRE -424 -464 -424 -480
WIRE 616 -464 616 -480
WIRE -312 -448 -312 -576
WIRE -296 -448 -312 -448
WIRE -200 -448 -216 -448
WIRE 280 -448 248 -448
WIRE -312 -352 -312 -448
WIRE -200 -352 -312 -352
WIRE 312 -352 312 -576
WIRE 312 -352 248 -352
WIRE 344 -352 344 -560
WIRE -504 -336 -504 -592
WIRE -344 -336 -344 -560
WIRE 504 -336 504 -592
WIRE -200 -256 -456 -256
WIRE 456 -256 248 -256
WIRE -648 -160 -680 -160
WIRE -504 -160 -504 -240
WIRE -504 -160 -568 -160
WIRE -456 -160 -504 -160
WIRE -344 -160 -344 -272
WIRE -344 -160 -392 -160
WIRE -200 -160 -344 -160
WIRE 344 -160 344 -288
WIRE 344 -160 248 -160
WIRE 408 -160 344 -160
WIRE 504 -160 504 -240
WIRE 504 -160 472 -160
WIRE 552 -160 504 -160
WIRE 712 -160 632 -160
WIRE -504 -64 -504 -160
WIRE -200 -64 -504 -64
WIRE 504 -64 504 -160
WIRE 504 -64 248 -64
WIRE -504 -48 -504 -64
WIRE 504 -48 504 -64
WIRE -200 32 -456 32
WIRE 456 32 248 32
WIRE -504 64 -504 48
WIRE 504 64 504 48
WIRE -680 128 -680 -160
WIRE -200 128 -680 128
WIRE 712 128 712 -160
WIRE 712 128 248 128
WIRE -680 224 -680 208
WIRE -200 224 -680 224
WIRE 712 224 712 208
WIRE 712 224 248 224
WIRE -680 320 -680 224
WIRE -680 320 -808 320
WIRE -600 320 -680 320
WIRE -504 320 -520 320
WIRE -200 320 -504 320
WIRE 488 320 248 320
WIRE 536 320 488 320
WIRE 712 320 712 224
WIRE 712 320 616 320
WIRE 824 320 712 320
WIRE -808 336 -808 320
WIRE -504 336 -504 320
WIRE 488 336 488 320
WIRE 824 336 824 320
WIRE -680 352 -680 320
WIRE 712 352 712 320
WIRE -360 416 -376 416
WIRE -200 416 -296 416
WIRE 344 416 248 416
WIRE 424 416 408 416
WIRE -808 432 -808 416
WIRE -680 432 -680 416
WIRE -504 432 -504 416
WIRE 488 432 488 416
WIRE 712 432 712 416
WIRE 824 432 824 416
WIRE -296 512 -312 512
WIRE -200 512 -232 512
WIRE 264 512 248 512
WIRE 360 512 328 512
WIRE -120 592 -120 576
WIRE 24 592 24 576
WIRE 168 592 168 576
FLAG 504 64 0
FLAG 168 592 0
FLAG -120 592 0
FLAG 488 432 0
FLAG 360 512 0
FLAG 424 416 0
FLAG -504 64 0
FLAG -504 432 0
FLAG -312 512 0
FLAG -632 -480 0
FLAG -424 -464 0
FLAG 280 -448 0
FLAG 712 432 0
FLAG -680 432 0
FLAG -376 416 0
FLAG -808 432 0
FLAG 824 432 0
FLAG 24 592 0
FLAG -632 -592 IN
FLAG -808 320 OUT1
FLAG 824 320 OUT2
FLAG 616 -464 0
FLAG 616 -576 RUN
SYMBOL voltage -632 -592 R0
SYMATTR InstName V1
SYMATTR Value 23
SYMBOL cap 408 -144 R270
SYMATTR InstName C1
SYMATTR Value .1
SYMBOL ind 536 -144 R270
SYMATTR InstName L1
SYMATTR Value 7.2
SYMATTR SpiceLine Rpar=2K
SYMBOL res 696 112 R0
SYMATTR InstName R1
SYMATTR Value 10m
SYMBOL schottky 328 -352 R0
SYMATTR Value BAT54
SYMATTR InstName D1
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL res 632 304 R90
SYMATTR InstName R2
SYMATTR Value 193K
SYMBOL res 472 320 R0
SYMATTR InstName R3
SYMATTR Value 20K
SYMBOL cap 328 496 R90
SYMATTR InstName C2
SYMATTR Value .001
SYMBOL nmos -456 -336 M0
SYMATTR InstName Q3
SYMATTR Value Si7884DP
SYMBOL cap -392 -144 M270
SYMATTR InstName C4
SYMATTR Value .1
SYMBOL ind -552 -144 M270
SYMATTR InstName L2
SYMATTR Value 3.3
SYMATTR SpiceLine Rpar=2K
SYMBOL res -696 112 R0
SYMATTR InstName R5
SYMATTR Value 7m
SYMBOL schottky -360 -336 R0
SYMATTR Value BAT54
SYMATTR InstName D2
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL res -616 304 M90
SYMATTR InstName R6
SYMATTR Value 62.5K
SYMBOL res -520 320 R0
SYMATTR InstName R7
SYMATTR Value 20K
SYMBOL cap -296 496 M90
SYMATTR InstName C5
SYMATTR Value .001
SYMBOL cap -440 -544 R0
SYMATTR InstName C6
SYMATTR Value 1
SYMBOL cap 696 352 R0
SYMATTR InstName C7
SYMATTR Value 150
SYMATTR SpiceLine Rser=50m
SYMBOL cap -696 352 R0
SYMATTR Value 150
SYMATTR InstName C8
SYMATTR SpiceLine Rser=50m
SYMBOL cap -296 432 M270
SYMATTR InstName C9
SYMATTR Value 680p
SYMATTR SpiceLine Rser=15K
SYMBOL res -824 320 R0
SYMATTR InstName Rload1
SYMATTR Value 1.5
SYMBOL res 808 320 R0
SYMATTR InstName Rload2
SYMATTR Value 5
SYMBOL nmos -456 -48 M0
SYMATTR InstName Q1
SYMATTR Value Si7884DP
SYMBOL nmos 456 -336 R0
SYMATTR InstName Q2
SYMATTR Value Si7884DP
SYMBOL nmos 456 -48 R0
SYMATTR InstName Q4
SYMATTR Value Si7884DP
SYMBOL voltage 616 -576 R0
SYMATTR InstName V2
SYMATTR Value 5
SYMBOL cap 344 432 R270
SYMATTR InstName C3
SYMATTR Value 680p
SYMATTR SpiceLine Rser=15K
SYMBOL PowerProducts\\LTC3857-1 24 32 R0
SYMATTR InstName U1
SYMBOL res -200 -464 R90
SYMATTR InstName R4
SYMATTR Value 100K