* SPICE netlist
MQ1 IN N004 N007 N007 IRF7811
C1 N006 N007 .47
MQ2 N007 N011 0 0 IRF7809A
D1 N001 N006 MBR0520L
L1 N007 N008 1
R1 N008 OUT .003
D2 0 N007 MBRS130L
C2 N016 N017 .47
L2 N017 N018 1
C3 OUT 0 1000 Rser=10m x2
R2 N019 0 16K
R3 N020 N019 16K
C4 N014 N013 1000p
R4 N013 0 3.3K
C5 N012 0 250p
V1 IN 0 6
R5 N018 OUT .003
C6 N001 0 1
MQ3 IN N015 N017 N017 IRF7811
MQ4 N017 N021 0 0 IRF7809A
D3 0 N017 MBRS130L
D4 N001 N016 MBR0520L
XU1 N012 N008 OUT N019 N010 N009 N003 N014 0 N020 0 OUT OUT N018 0 N015 N017 N016 N021 0 N001 N002 N011 IN N006 N007 N004 N005 LTC1629-6 ;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
Rload OUT 0 .1
.tran 1m startup

* LTspice schematic (.asc)
Version 4
SHEET 1 1936 1056
WIRE -648 -528 -872 -528
WIRE 328 -528 -648 -528
WIRE 408 -528 328 -528
WIRE -872 -512 -872 -528
WIRE -200 -512 -328 -512
WIRE -88 -512 -200 -512
WIRE 120 -512 -88 -512
WIRE -200 -496 -200 -512
WIRE -88 -496 -88 -512
WIRE 120 -496 120 -512
WIRE 408 -448 408 -528
WIRE -648 -432 -648 -528
WIRE -488 -432 -488 -448
WIRE -328 -432 -328 -512
WIRE -872 -416 -872 -432
WIRE -200 -416 -200 -432
WIRE -744 -368 -760 -368
WIRE 360 -368 -232 -368
WIRE -744 -304 -760 -304
WIRE -88 -304 -88 -432
WIRE -88 -304 -232 -304
WIRE 408 -304 408 -352
WIRE 408 -304 184 -304
WIRE 488 -304 408 -304
WIRE 600 -304 488 -304
WIRE 728 -304 680 -304
WIRE 744 -304 728 -304
WIRE 840 -304 824 -304
WIRE 904 -304 840 -304
WIRE 488 -288 488 -304
WIRE 408 -256 408 -304
WIRE -744 -240 -760 -240
WIRE -88 -240 -232 -240
WIRE 184 -240 184 -304
WIRE 184 -240 -88 -240
WIRE 488 -208 488 -224
WIRE -744 -176 -760 -176
WIRE 360 -176 -232 -176
WIRE 408 -144 408 -160
WIRE 904 -144 904 -304
WIRE 968 -144 904 -144
WIRE 968 -128 968 -144
WIRE 728 -112 728 -304
WIRE 728 -112 -232 -112
WIRE -840 -48 -888 -48
WIRE -744 -48 -776 -48
WIRE 840 -48 840 -304
WIRE 840 -48 -232 -48
WIRE 968 -32 968 -48
WIRE 328 0 328 -528
WIRE -936 80 -952 80
WIRE -840 80 -856 80
WIRE -744 80 -776 80
WIRE 280 80 -232 80
WIRE -744 144 -760 144
WIRE 120 144 120 -432
WIRE 120 144 -232 144
WIRE 328 144 328 96
WIRE 328 144 248 144
WIRE 408 144 328 144
WIRE 520 144 408 144
WIRE 664 144 600 144
WIRE 680 144 664 144
WIRE 776 144 760 144
WIRE 904 144 904 -144
WIRE 904 144 776 144
WIRE 408 160 408 144
WIRE 904 176 904 144
WIRE 904 176 840 176
WIRE 328 192 328 144
WIRE 904 192 904 176
WIRE -856 208 -952 208
WIRE -744 208 -776 208
WIRE 120 208 -232 208
WIRE 248 208 248 144
WIRE 248 208 120 208
WIRE 408 240 408 224
WIRE -952 272 -952 208
WIRE -744 272 -952 272
WIRE 280 272 -232 272
WIRE 904 272 904 256
WIRE 904 272 872 272
WIRE -952 288 -952 272
WIRE 328 304 328 288
WIRE 904 304 904 272
WIRE -744 336 -824 336
WIRE 664 336 664 144
WIRE 664 336 -232 336
WIRE -952 384 -952 368
WIRE -744 400 -792 400
WIRE 776 400 776 144
WIRE 776 400 -232 400
WIRE -600 480 -600 464
WIRE -376 480 -376 464
WIRE -792 512 -792 400
WIRE 840 512 840 176
WIRE 840 512 -792 512
WIRE -824 528 -824 336
WIRE 872 528 872 272
WIRE 872 528 -824 528
FLAG 408 -144 0
FLAG 488 -208 0
FLAG 328 304 0
FLAG 408 240 0
FLAG -376 480 0
FLAG -600 480 0
FLAG 904 304 0
FLAG -952 384 0
FLAG -952 80 0
FLAG -888 -48 0
FLAG -872 -416 0
FLAG 968 -32 0
FLAG -200 -416 0
FLAG 968 -144 OUT
FLAG -760 144 0
FLAG -872 -528 IN
SYMBOL NMOS 360 -448 R0
SYMATTR InstName Q1
SYMATTR Value IRF7811
SYMBOL polcap -104 -304 R0
SYMATTR Value .47
SYMATTR InstName C1
SYMBOL nmos 360 -256 R0
SYMATTR InstName Q2
SYMATTR Value IRF7809A
SYMBOL schottky -104 -496 R0
SYMATTR InstName D1
SYMATTR Value MBR0520L
SYMBOL ind 584 -288 R270
SYMATTR InstName L1
SYMATTR Value 1
SYMBOL RES 728 -320 M90
SYMATTR InstName R1
SYMATTR Value .003
SYMBOL schottky 472 -224 M180
SYMATTR InstName D2
SYMATTR Value MBRS130L
SYMBOL polcap 104 144 R0
SYMATTR Value .47
SYMATTR InstName C2
SYMBOL ind 504 160 R270
SYMATTR InstName L2
SYMATTR Value 1
SYMBOL polcap 888 192 R0
SYMATTR SpiceLine2 x2
SYMATTR InstName C3
SYMATTR Value 1000
SYMATTR SpiceLine Rser=10m
SYMBOL res -968 272 R0
SYMATTR InstName R2
SYMATTR Value 16K
SYMBOL RES -760 192 R90
SYMATTR InstName R3
SYMATTR Value 16K
SYMBOL cap -776 64 R90
SYMATTR InstName C4
SYMATTR Value 1000p
SYMBOL res -840 64 R90
SYMATTR InstName R4
SYMATTR Value 3.3K
SYMBOL cap -776 -64 R90
SYMATTR InstName C5
SYMATTR Value 250p
SYMBOL VOLTAGE -872 -528 R0
SYMATTR InstName V1
SYMATTR Value 6
SYMBOL RES 664 128 M90
SYMATTR InstName R5
SYMATTR Value .003
SYMBOL polcap -216 -496 R0
SYMATTR InstName C6
SYMATTR Value 1
SYMBOL NMOS 280 0 R0
SYMATTR InstName Q3
SYMATTR Value IRF7811
SYMBOL nmos 280 192 R0
SYMATTR InstName Q4
SYMATTR Value IRF7809A
SYMBOL schottky 392 224 M180
SYMATTR InstName D3
SYMATTR Value MBRS130L
SYMBOL schottky 104 -496 R0
SYMATTR InstName D4
SYMATTR Value MBR0520L
SYMBOL PowerProducts\\LTC1629-6 -488 16 R0
SYMATTR InstName U1
SYMBOL res 952 -144 R0
SYMATTR InstName Rload
SYMATTR Value .1