* SPICE netlist
MQ1 IN N002 N004 N004 FDS6680A
MQ2 N004 N008 0 0 FDS6680A
C1 N004 N005 .1
D1 N001 N005 1N5817
C2 N001 0 4.7
L1 N004 OUT1 2.2 Rser=10m Rpar=2K
C3 N010 OUT1 .1
R1 N012 0 20K
R2 OUT1 N012 63.4K
C4 OUT1 0 147
C5 N014 0 220p Rser=15K
C6 N016 0 .0005
V1 IN 0 10
MQ3 IN N003 N007 N007 FDS6680A
MQ4 N007 N009 0 0 FDS6680A
C7 N007 N006 .1
D3 N001 N006 1N5817
C8 N011 OUT2 .1
R5 N013 0 20K
R6 OUT2 N013 43.2K
C9 OUT2 0 147
L2 N007 OUT2 2.2 Rser=10m Rpar=2K
R9 OUT1 N020 20K
C12 N021 0 .002 Rser=10K
Rload1 OUT1 0 .66
Rload2 OUT2 0 .5
XU1 N016 N010 OUT1 N012 N021 N022 N019 N014 0 N018 N015 N013 OUT2 N011 N017 N003 N007 N006 N009 0 N001 N001 N008 IN N005 N004 N002 N020 NC_01 LTC3850 ;pnba Track/SS1)Sense1+)Sense1-)Vosense1)Freq/PLLFLTR)FCB/PLLIN)Run2)Ith1)SGND)Run1)Ith2)Vosense2)Sense2-)Sense2+)Track/SS2)TG2)SW2)Boost2)BG2)PGND)IntVcc)Ilim)BG1)Vin)Boost1)SW1)TG1)Pgood)ExtVcc
C10 N015 0 220p Rser=15K
C11 N017 0 .0005
V3 N022 0 SINE(1 1 500K)
R3 N010 N004 2.2K
R4 N007 N011 2.2K
.tran 450u startup

* LTspice schematic (.asc)
Version 4
SHEET 1 1536 1232
WIRE -400 -616 -528 -616
WIRE -48 -616 -400 -616
WIRE 512 -616 -48 -616
WIRE -528 -600 -528 -616
WIRE -192 -600 -240 -600
WIRE 48 -600 -192 -600
WIRE 240 -600 48 -600
WIRE 368 -600 240 -600
WIRE -192 -584 -192 -600
WIRE 368 -568 368 -600
WIRE -400 -552 -400 -616
WIRE -48 -552 -48 -616
WIRE 48 -552 48 -600
WIRE 240 -552 240 -600
WIRE 512 -552 512 -616
WIRE -528 -504 -528 -520
WIRE -192 -504 -192 -520
WIRE -128 -472 -352 -472
WIRE 464 -472 320 -472
WIRE -240 -456 -240 -600
WIRE -400 -376 -400 -456
WIRE -352 -376 -400 -376
WIRE -240 -376 -240 -392
WIRE -240 -376 -288 -376
WIRE -128 -376 -240 -376
WIRE 368 -376 368 -504
WIRE 368 -376 320 -376
WIRE 400 -376 368 -376
WIRE 512 -376 512 -456
WIRE 512 -376 464 -376
WIRE -544 -280 -560 -280
WIRE -432 -280 -464 -280
WIRE -400 -280 -400 -376
WIRE -400 -280 -432 -280
WIRE -128 -280 -400 -280
WIRE 512 -280 512 -376
WIRE 512 -280 320 -280
WIRE 560 -280 512 -280
WIRE 576 -280 560 -280
WIRE 672 -280 656 -280
WIRE -400 -264 -400 -280
WIRE 512 -264 512 -280
WIRE -128 -184 -352 -184
WIRE 464 -184 320 -184
WIRE -400 -152 -400 -168
WIRE 512 -152 512 -168
WIRE -432 -88 -432 -280
WIRE -336 -88 -432 -88
WIRE -208 -88 -256 -88
WIRE -128 -88 -208 -88
WIRE 368 -88 320 -88
WIRE 432 -88 368 -88
WIRE 560 -88 560 -280
WIRE 560 -88 512 -88
WIRE -208 -72 -208 -88
WIRE 368 -72 368 -88
WIRE -560 8 -560 -280
WIRE -208 8 -208 -8
WIRE -208 8 -560 8
WIRE -128 8 -208 8
WIRE 368 8 368 -8
WIRE 368 8 320 8
WIRE 672 8 672 -280
WIRE 672 8 368 8
WIRE -608 104 -752 104
WIRE -560 104 -560 8
WIRE -560 104 -608 104
WIRE -496 104 -560 104
WIRE -368 104 -416 104
WIRE -128 104 -368 104
WIRE 528 104 320 104
WIRE 560 104 528 104
WIRE 672 104 672 8
WIRE 672 104 640 104
WIRE 768 104 672 104
WIRE -752 120 -752 104
WIRE -560 120 -560 104
WIRE 672 120 672 104
WIRE 768 120 768 104
WIRE -368 136 -368 104
WIRE 528 136 528 104
WIRE -224 200 -256 200
WIRE -128 200 -160 200
WIRE 352 200 320 200
WIRE 448 200 416 200
WIRE -752 216 -752 200
WIRE -560 216 -560 184
WIRE 672 216 672 184
WIRE 768 216 768 200
WIRE -368 232 -368 216
WIRE 528 232 528 216
WIRE -304 296 -320 296
WIRE -128 296 -240 296
WIRE 432 296 320 296
WIRE 512 296 496 296
WIRE -128 392 -144 392
WIRE 336 392 320 392
WIRE -608 488 -608 104
WIRE -224 488 -608 488
WIRE -128 488 -144 488
WIRE 352 488 320 488
WIRE 432 488 416 488
WIRE -48 584 -48 568
WIRE 240 584 240 568
WIRE -304 616 -336 616
WIRE 96 616 96 568
WIRE 96 616 -224 616
FLAG 240 584 0
FLAG -192 -504 0
FLAG -400 -152 0
FLAG -320 296 0
FLAG -256 200 0
FLAG -560 216 0
FLAG -368 232 0
FLAG -752 104 OUT1
FLAG -528 -504 0
FLAG 512 -152 0
FLAG 672 216 0
FLAG 528 232 0
FLAG 768 104 OUT2
FLAG -752 216 0
FLAG 768 216 0
FLAG -48 584 0
FLAG 432 488 0
FLAG -528 -616 IN
FLAG 512 296 0
FLAG 448 200 0
FLAG -336 616 0
SYMBOL NMOS -352 -552 M0
SYMATTR InstName Q1
SYMATTR Value FDS6680A
SYMBOL nmos -352 -264 M0
SYMATTR InstName Q2
SYMATTR Value FDS6680A
SYMBOL cap -352 -392 M90
SYMATTR InstName C1
SYMATTR Value .1
SYMBOL schottky -256 -456 R0
SYMATTR Value 1N5817
SYMATTR InstName D1
SYMBOL cap -208 -584 R0
SYMATTR InstName C2
SYMATTR Value 4.7
SYMBOL ind -448 -264 M270
SYMATTR InstName L1
SYMATTR Value 2.2
SYMATTR SpiceLine Rser=10m Rpar=2K
SYMBOL cap -224 -72 R0
SYMATTR Value .1
SYMATTR InstName C3
SYMBOL res -384 120 R0
SYMATTR InstName R1
SYMATTR Value 20K
SYMBOL res -512 120 R270
SYMATTR InstName R2
SYMATTR Value 63.4K
SYMBOL cap -576 120 R0
SYMATTR InstName C4
SYMATTR Value 147
SYMBOL cap -160 184 R90
SYMATTR InstName C5
SYMATTR Value 220p
SYMATTR SpiceLine Rser=15K
SYMBOL cap -240 280 R90
SYMATTR InstName C6
SYMATTR Value .0005
SYMBOL VOLTAGE -528 -616 R0
SYMATTR InstName V1
SYMATTR Value 10
SYMBOL nmos 464 -552 R0
SYMATTR InstName Q3
SYMATTR Value FDS6680A
SYMBOL nmos 464 -264 R0
SYMATTR Value FDS6680A
SYMATTR InstName Q4
SYMBOL cap 464 -392 R90
SYMATTR InstName C7
SYMATTR Value .1
SYMBOL schottky 352 -568 R0
SYMATTR InstName D3
SYMATTR Value 1N5817
SYMBOL cap 352 -72 R0
SYMATTR InstName C8
SYMATTR Value .1
SYMBOL res 512 120 R0
SYMATTR InstName R5
SYMATTR Value 20K
SYMBOL res 656 120 M270
SYMATTR InstName R6
SYMATTR Value 43.2K
SYMBOL cap 656 120 R0
SYMATTR InstName C9
SYMATTR Value 147
SYMBOL ind 560 -264 R270
SYMATTR InstName L2
SYMATTR Value 2.2
SYMATTR SpiceLine Rser=10m Rpar=2K
SYMBOL RES -240 504 R270
SYMATTR InstName R9
SYMATTR Value 20K
SYMBOL cap 352 504 R270
SYMATTR Value .002
SYMATTR SpiceLine Rser=10K
SYMATTR InstName C12
SYMBOL RES -768 104 R0
SYMATTR InstName Rload1
SYMATTR Value .66
SYMBOL res 752 104 R0
SYMATTR InstName Rload2
SYMATTR Value .5
SYMBOL PowerProducts\\LTC3850 96 -88 R0
SYMATTR InstName U1
SYMBOL cap 352 184 M90
SYMATTR InstName C10
SYMATTR Value 220p
SYMATTR SpiceLine Rser=15K
SYMBOL cap 432 280 M90
SYMATTR InstName C11
SYMATTR Value .0005
SYMBOL voltage -208 616 M270
SYMATTR InstName V3
SYMATTR Value SINE(1 1 500K)
SYMBOL res -240 -104 R90
SYMATTR InstName R3
SYMATTR Value 2.2K
SYMBOL res 528 -104 R90
SYMATTR InstName R4
SYMATTR Value 2.2K