* SPICE netlist
MQ1 IN N004 N007 N007 FDS6680A
C1 N006 N007 .47
MQ2 N007 N012 0 0 FDS6680A
D1 N001 N006 1N5818
L1 N007 N008 1
R1 N008 OUT 2m
D2 0 N007 1N5818
MQ3 IN N016 N019 N019 FDS6680A
C2 N018 N019 .47
MQ4 N019 N023 0 0 FDS6680A
L2 N019 N020 1
D3 0 N019 1N5818
C3 OUT 0 1000 Rser=10m x2
R2 N021 0 16K
R3 N022 N021 16K
R4 OUT N017 3.3K
C4 N015 0 100p
C5 N014 0 1000p
R5 N015 N014 10K
C6 N013 0 250p
D4 N001 N018 1N5818
V1 IN 0 6
R6 N020 OUT 2m
XU1 N013 N008 OUT N021 N011 N009 N003 N015 0 N022 0 OUT OUT N020 N017 N016 N019 N018 N023 0 N001 N002 N012 IN N006 N007 N004 N005 LTC1629-PG ;pnba Run/SS)Sense1+)Sense1-)EAIN)PLLFLT)PLLIN)PHASEMD)Ith)SGND)DiffOut)OS-)OS+)Sense2-)Sense2+)Pgood)TG2)SW2)Boost2)BG2)PGND)INTVcc)EXTVcc)BG1)Vin)Boost1)SW1)TG1)CLKOUT
R7 N010 0 10K
C7 N011 N010 .01
C8 N001 0 1
V2 N009 0 SINE(.5 .5 200K)
Rload OUT 0 .1
.tran 750u startup

* LTspice schematic (.asc)
Version 4
SHEET 1 2096 1056
WIRE -440 -528 -680 -528
WIRE 472 -528 -440 -528
WIRE 552 -528 472 -528
WIRE -680 -512 -680 -528
WIRE 24 -512 -120 -512
WIRE 136 -512 24 -512
WIRE 280 -512 136 -512
WIRE 24 -496 24 -512
WIRE 136 -496 136 -512
WIRE 280 -496 280 -512
WIRE 552 -464 552 -528
WIRE -440 -448 -440 -528
WIRE -280 -448 -280 -464
WIRE -120 -448 -120 -512
WIRE -680 -416 -680 -432
WIRE 24 -416 24 -432
WIRE -536 -384 -552 -384
WIRE 504 -384 -24 -384
WIRE -536 -320 -552 -320
WIRE 136 -320 136 -432
WIRE 136 -320 -24 -320
WIRE 552 -320 552 -368
WIRE 552 -320 344 -320
WIRE 632 -320 552 -320
WIRE 728 -320 632 -320
WIRE 824 -320 808 -320
WIRE 840 -320 824 -320
WIRE 936 -320 920 -320
WIRE 1000 -320 936 -320
WIRE 1048 -320 1000 -320
WIRE 632 -304 632 -320
WIRE 1048 -304 1048 -320
WIRE 552 -272 552 -320
WIRE -904 -256 -936 -256
WIRE -536 -256 -824 -256
WIRE 136 -256 -24 -256
WIRE 344 -256 344 -320
WIRE 344 -256 136 -256
WIRE 632 -224 632 -240
WIRE 1048 -208 1048 -224
WIRE -712 -192 -744 -192
WIRE -616 -192 -632 -192
WIRE -536 -192 -552 -192
WIRE 504 -192 -24 -192
WIRE 552 -160 552 -176
WIRE 824 -128 824 -320
WIRE 824 -128 -24 -128
WIRE -632 -64 -664 -64
WIRE -536 -64 -568 -64
WIRE 936 -64 936 -320
WIRE 936 -64 -24 -64
WIRE 472 -16 472 -528
WIRE -984 64 -1032 64
WIRE -872 64 -904 64
WIRE -536 64 -872 64
WIRE 424 64 -24 64
WIRE -1032 80 -1032 64
WIRE -872 80 -872 64
WIRE -744 128 -792 128
WIRE -536 128 -664 128
WIRE 280 128 280 -432
WIRE 280 128 -24 128
WIRE 472 128 472 80
WIRE 472 128 408 128
WIRE 552 128 472 128
WIRE 664 128 552 128
WIRE 760 128 744 128
WIRE 776 128 760 128
WIRE 872 128 856 128
WIRE 904 128 872 128
WIRE 1000 128 1000 -320
WIRE 1000 128 904 128
WIRE 552 144 552 128
WIRE -1032 160 -1032 144
WIRE -872 160 -872 144
WIRE 1000 160 1000 128
WIRE 1000 160 936 160
WIRE 472 176 472 128
WIRE 1000 176 1000 160
WIRE -648 192 -744 192
WIRE -536 192 -568 192
WIRE 280 192 -24 192
WIRE 408 192 408 128
WIRE 408 192 280 192
WIRE 552 224 552 208
WIRE -744 256 -744 192
WIRE -536 256 -744 256
WIRE 424 256 -24 256
WIRE 1000 256 1000 240
WIRE 1000 256 968 256
WIRE -744 272 -744 256
WIRE 472 288 472 272
WIRE 1000 288 1000 256
WIRE -536 320 -600 320
WIRE 760 320 760 128
WIRE 760 320 -24 320
WIRE -744 368 -744 352
WIRE -536 384 -568 384
WIRE 872 384 872 128
WIRE 872 384 -24 384
WIRE -392 464 -392 448
WIRE -168 464 -168 448
WIRE -568 496 -568 384
WIRE 936 496 936 160
WIRE 936 496 -568 496
WIRE -600 512 -600 320
WIRE 968 512 968 256
WIRE 968 512 -600 512
WIRE -792 528 -792 128
WIRE 904 528 904 128
WIRE 904 528 -792 528
FLAG 552 -160 0
FLAG 632 -224 0
FLAG 472 288 0
FLAG 552 224 0
FLAG -168 464 0
FLAG -392 464 0
FLAG 1000 288 0
FLAG -744 368 0
FLAG -1032 160 0
FLAG -872 160 0
FLAG -664 -64 0
FLAG -680 -416 0
FLAG 1048 -208 0
FLAG -936 -256 0
FLAG -744 -192 0
FLAG 24 -416 0
FLAG 1048 -320 OUT
FLAG -680 -528 IN
SYMBOL NMOS 504 -464 R0
SYMATTR InstName Q1
SYMATTR Value FDS6680A
SYMBOL polcap 120 -320 R0
SYMATTR Value .47
SYMATTR InstName C1
SYMBOL nmos 504 -272 R0
SYMATTR InstName Q2
SYMATTR Value FDS6680A
SYMBOL schottky 120 -496 R0
SYMATTR InstName D1
SYMATTR Value 1N5818
SYMBOL ind 712 -304 R270
SYMATTR InstName L1
SYMATTR Value 1
SYMBOL RES 824 -336 M90
SYMATTR InstName R1
SYMATTR Value 2m
SYMBOL schottky 616 -240 M180
SYMATTR InstName D2
SYMATTR Value 1N5818
SYMBOL nmos 424 -16 R0
SYMATTR InstName Q3
SYMATTR Value FDS6680A
SYMBOL polcap 264 128 R0
SYMATTR Value .47
SYMATTR InstName C2
SYMBOL nmos 424 176 R0
SYMATTR InstName Q4
SYMATTR Value FDS6680A
SYMBOL ind 648 144 R270
SYMATTR InstName L2
SYMATTR Value 1
SYMBOL schottky 536 208 M180
SYMATTR InstName D3
SYMATTR Value 1N5818
SYMBOL polcap 984 176 R0
SYMATTR SpiceLine2 x2
SYMATTR InstName C3
SYMATTR Value 1000
SYMATTR SpiceLine Rser=10m
SYMBOL res -760 256 R0
SYMATTR InstName R2
SYMATTR Value 16K
SYMBOL RES -552 176 R90
SYMATTR InstName R3
SYMATTR Value 16K
SYMBOL res -760 144 R270
SYMATTR InstName R4
SYMATTR Value 3.3K
SYMBOL cap -888 80 R0
SYMATTR InstName C4
SYMATTR Value 100p
SYMBOL cap -1048 80 R0
SYMATTR InstName C5
SYMATTR Value 1000p
SYMBOL res -888 48 R90
SYMATTR InstName R5
SYMATTR Value 10K
SYMBOL cap -568 -80 R90
SYMATTR InstName C6
SYMATTR Value 250p
SYMBOL schottky 264 -496 R0
SYMATTR InstName D4
SYMATTR Value 1N5818
SYMBOL VOLTAGE -680 -528 R0
SYMATTR InstName V1
SYMATTR Value 6
SYMBOL RES 760 112 M90
SYMATTR InstName R6
SYMATTR Value 2m
SYMBOL POWERPRODUCTS\\LTC1629-PG -280 0 R0
SYMATTR InstName U1
SYMBOL res -616 -208 R90
SYMATTR InstName R7
SYMATTR Value 10K
SYMBOL cap -552 -208 R90
SYMATTR InstName C7
SYMATTR Value .01
SYMBOL polcap 8 -496 R0
SYMATTR InstName C8
SYMATTR Value 1
SYMBOL voltage -808 -256 R90
SYMATTR InstName V2
SYMATTR Value SINE(.5 .5 200K)
SYMBOL res 1032 -320 R0
SYMATTR InstName Rload
SYMATTR Value .1