* 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 3.2 Rser=6m Rpar=2K
C3 N010 OUT1 .1
R1 N012 0 20K
R2 OUT1 N012 147K
C4 OUT1 0 47
C5 N014 0 470p Rser=15K
C6 N016 0 .001
V1 IN 0 10
MQ3 IN N003 N007 N007 FDS6680A
MQ4 N007 N009 0 0 FDS6680A
C7 N007 N006 .1
D2 N001 N006 1N5817
C8 N011 OUT2 .1
R3 N013 0 20K
R4 OUT2 N013 90.9K
C9 OUT2 0 56
L2 N007 OUT2 2.2 Rser=10m Rpar=2K
R5 OUT1 N020 20K
C10 N015 0 470p Rser=15K
C11 N017 0 .001
R6 N010 N004 2.2K
R7 N007 N011 2.2K
R8 N021 0 122K
XU1 N016 N010 OUT1 N012 N021 NC_01 N018 N014 0 N019 N015 N013 OUT2 N011 N017 N003 N007 N006 N009 0 N001 MP_02 N008 IN N005 N004 N002 N020 NC_03 LTC3869-2 ;pnba TK/SS1)Sense1+)Sense1-)FB1)Freq)Mode/PLLIN)Run1)Ith1)SGND)Run2)Ith2)FB2)Sense2-)Sense2+)TK/SS2)TG2)SW2)Boost2)BG2)PGND)IntVcc))BG1)Vin)Boost1)SW1)TG1)Pgood)ExtVcc
Rload1 OUT1 0 1
Rload2 OUT2 0 .66
.tran .6m startup

* LTspice schematic (.asc)
Version 4
SHEET 1 1536 1200
WIRE -400 -600 -512 -600
WIRE -48 -600 -400 -600
WIRE 512 -600 -48 -600
WIRE -512 -584 -512 -600
WIRE -192 -584 -240 -584
WIRE 96 -584 -192 -584
WIRE 368 -584 96 -584
WIRE -192 -568 -192 -584
WIRE 368 -552 368 -584
WIRE -400 -536 -400 -600
WIRE -48 -536 -48 -600
WIRE 96 -536 96 -584
WIRE 512 -536 512 -600
WIRE -512 -488 -512 -504
WIRE -192 -488 -192 -504
WIRE -128 -456 -352 -456
WIRE 464 -456 320 -456
WIRE -240 -440 -240 -584
WIRE -400 -360 -400 -440
WIRE -352 -360 -400 -360
WIRE -240 -360 -240 -376
WIRE -240 -360 -288 -360
WIRE -128 -360 -240 -360
WIRE 368 -360 368 -488
WIRE 368 -360 320 -360
WIRE 400 -360 368 -360
WIRE 512 -360 512 -440
WIRE 512 -360 464 -360
WIRE -544 -264 -560 -264
WIRE -432 -264 -464 -264
WIRE -400 -264 -400 -360
WIRE -400 -264 -432 -264
WIRE -128 -264 -400 -264
WIRE 512 -264 512 -360
WIRE 512 -264 320 -264
WIRE 560 -264 512 -264
WIRE 576 -264 560 -264
WIRE 672 -264 656 -264
WIRE -400 -248 -400 -264
WIRE 512 -248 512 -264
WIRE -128 -168 -352 -168
WIRE 464 -168 320 -168
WIRE -400 -136 -400 -152
WIRE 512 -136 512 -152
WIRE -432 -72 -432 -264
WIRE -336 -72 -432 -72
WIRE -208 -72 -256 -72
WIRE -128 -72 -208 -72
WIRE 368 -72 320 -72
WIRE 432 -72 368 -72
WIRE 560 -72 560 -264
WIRE 560 -72 512 -72
WIRE -208 -56 -208 -72
WIRE 368 -56 368 -72
WIRE -560 24 -560 -264
WIRE -208 24 -208 8
WIRE -208 24 -560 24
WIRE -128 24 -208 24
WIRE 368 24 368 8
WIRE 368 24 320 24
WIRE 672 24 672 -264
WIRE 672 24 368 24
WIRE -608 120 -752 120
WIRE -560 120 -560 24
WIRE -560 120 -608 120
WIRE -496 120 -560 120
WIRE -368 120 -416 120
WIRE -128 120 -368 120
WIRE 528 120 320 120
WIRE 560 120 528 120
WIRE 672 120 672 24
WIRE 672 120 640 120
WIRE 768 120 672 120
WIRE -752 136 -752 120
WIRE -560 136 -560 120
WIRE 672 136 672 120
WIRE 768 136 768 120
WIRE -368 152 -368 120
WIRE 528 152 528 120
WIRE -224 216 -256 216
WIRE -128 216 -160 216
WIRE 352 216 320 216
WIRE 448 216 416 216
WIRE -752 232 -752 216
WIRE -560 232 -560 200
WIRE 672 232 672 200
WIRE 768 232 768 216
WIRE -368 248 -368 232
WIRE 528 248 528 232
WIRE -304 312 -320 312
WIRE -128 312 -240 312
WIRE 432 312 320 312
WIRE 512 312 496 312
WIRE -128 408 -144 408
WIRE 336 408 320 408
WIRE -608 504 -608 120
WIRE -224 504 -608 504
WIRE -128 504 -144 504
WIRE 336 504 320 504
WIRE 432 504 416 504
WIRE -48 600 -48 584
WIRE 240 600 240 584
FLAG 240 600 0
FLAG -192 -488 0
FLAG -400 -136 0
FLAG -320 312 0
FLAG -256 216 0
FLAG -560 232 0
FLAG -368 248 0
FLAG -752 120 OUT1
FLAG -512 -488 0
FLAG 512 -136 0
FLAG 672 232 0
FLAG 528 248 0
FLAG 768 120 OUT2
FLAG -752 232 0
FLAG 768 232 0
FLAG -48 600 0
FLAG 432 504 0
FLAG -512 -600 IN
FLAG 512 312 0
FLAG 448 216 0
SYMBOL NMOS -352 -536 M0
SYMATTR InstName Q1
SYMATTR Value FDS6680A
SYMBOL nmos -352 -248 M0
SYMATTR InstName Q2
SYMATTR Value FDS6680A
SYMBOL cap -352 -376 M90
SYMATTR InstName C1
SYMATTR Value .1
SYMBOL schottky -256 -440 R0
SYMATTR Value 1N5817
SYMATTR InstName D1
SYMBOL cap -208 -568 R0
SYMATTR InstName C2
SYMATTR Value 4.7
SYMBOL ind -448 -248 M270
SYMATTR InstName L1
SYMATTR Value 3.2
SYMATTR SpiceLine Rser=6m Rpar=2K
SYMBOL cap -224 -56 R0
SYMATTR Value .1
SYMATTR InstName C3
SYMBOL res -384 136 R0
SYMATTR InstName R1
SYMATTR Value 20K
SYMBOL res -512 136 R270
SYMATTR InstName R2
SYMATTR Value 147K
SYMBOL cap -576 136 R0
SYMATTR InstName C4
SYMATTR Value 47
SYMBOL cap -160 200 R90
SYMATTR InstName C5
SYMATTR Value 470p
SYMATTR SpiceLine Rser=15K
SYMBOL cap -240 296 R90
SYMATTR InstName C6
SYMATTR Value .001
SYMBOL VOLTAGE -512 -600 R0
SYMATTR InstName V1
SYMATTR Value 10
SYMBOL nmos 464 -536 R0
SYMATTR InstName Q3
SYMATTR Value FDS6680A
SYMBOL nmos 464 -248 R0
SYMATTR Value FDS6680A
SYMATTR InstName Q4
SYMBOL cap 464 -376 R90
SYMATTR InstName C7
SYMATTR Value .1
SYMBOL schottky 352 -552 R0
SYMATTR InstName D2
SYMATTR Value 1N5817
SYMBOL cap 352 -56 R0
SYMATTR InstName C8
SYMATTR Value .1
SYMBOL res 512 136 R0
SYMATTR InstName R3
SYMATTR Value 20K
SYMBOL res 656 136 M270
SYMATTR InstName R4
SYMATTR Value 90.9K
SYMBOL cap 656 136 R0
SYMATTR InstName C9
SYMATTR Value 56
SYMBOL ind 560 -248 R270
SYMATTR InstName L2
SYMATTR Value 2.2
SYMATTR SpiceLine Rser=10m Rpar=2K
SYMBOL RES -240 520 R270
SYMATTR InstName R5
SYMATTR Value 20K
SYMBOL cap 352 200 M90
SYMATTR InstName C10
SYMATTR Value 470p
SYMATTR SpiceLine Rser=15K
SYMBOL cap 432 296 M90
SYMATTR InstName C11
SYMATTR Value .001
SYMBOL res -240 -88 R90
SYMATTR InstName R6
SYMATTR Value 2.2K
SYMBOL res 528 -88 R90
SYMATTR InstName R7
SYMATTR Value 2.2K
SYMBOL res 320 520 R270
SYMATTR InstName R8
SYMATTR Value 122K
SYMBOL PowerProducts\\LTC3869-2 96 24 R0
SYMATTR InstName U1
SYMBOL RES -768 120 R0
SYMATTR InstName Rload1
SYMATTR Value 1
SYMBOL res 752 120 R0
SYMATTR InstName Rload2
SYMATTR Value .66