* SPICE netlist
V1 IN 0 6
MQ1 IN N002 N004 N004 Si4866DY
MQ2 N004 N008 0 0 Si4866DY
C1 N003 N004 .1
D1 IN N003 1N5817
D2 0 N004 1N5817
R1 N006 OUT .003
C2 N006 OUT 1000p
L1 N004 N006 1
R2 IN N001 10K
MQ3 IN N009 N011 N011 Si4866DY
MQ4 N011 N013 0 0 Si4866DY
C3 N010 N011 .1
D3 IN N010 1N5817
D4 0 N011 1N5817
R3 N012 OUT .003
C4 N012 OUT 1000p
L2 N011 N012 1
MQ5 IN N018 N020 N020 Si4866DY
MQ6 N020 N024 0 0 Si4866DY
C5 N019 N020 .1
D5 0 N020 1N5817
R4 N022 OUT .003
L3 N020 N022 1
D6 IN N019 1N5817
C6 N022 OUT 1000p
C7 OUT 0 480 Rser=.01
C8 N021 N023 100p
C9 N017 0 100p
C10 N015 0 680p
R5 N016 N015 5K
R6 N021 N023 7.5K
R7 0 N021 6.04K
XU1 MP_01 N007 N005 N014 OUT 0 N023 N021 0 N006 OUT N012 OUT OUT N022 N017 N016 MP_02 MP_03 MP_04 N019 N018 N020 N024 N013 0 N008 IN N011 N009 N010 N004 N002 N003 N001 LTC3731 ;pnba )PLLIN)PLLFLTR)FCB)IN+)IN-)DIFFOUT)EAIN)SGND)Sense1+)Sense1-)Sense2+)Sense2-)Sense3-)Sense3+)Run/SS)Ith))))Boost3)TG3)SW3)BG3)BG2)PGND)BG1)Vcc)SW2)TG2)Boost2)SW1)TG1)Boost1)Pgood
Rload OUT 0 .1
.tran 300u startup

* LTspice schematic (.asc)
Version 4
SHEET 1 1904 1952
WIRE -696 -976 -808 -976
WIRE -392 -976 -696 -976
WIRE -136 -976 -392 -976
WIRE -8 -976 -136 -976
WIRE 104 -976 -8 -976
WIRE 248 -976 104 -976
WIRE 328 -976 248 -976
WIRE 424 -976 328 -976
WIRE -808 -960 -808 -976
WIRE -696 -960 -696 -976
WIRE -136 -960 -136 -976
WIRE -8 -960 -8 -976
WIRE 104 -960 104 -976
WIRE 424 -944 424 -976
WIRE -392 -896 -392 -976
WIRE -808 -864 -808 -880
WIRE -696 -864 -696 -880
WIRE -616 -864 -696 -864
WIRE 376 -864 -168 -864
WIRE 104 -768 104 -896
WIRE 104 -768 -168 -768
WIRE 136 -768 104 -768
WIRE 424 -768 424 -848
WIRE 424 -768 200 -768
WIRE -616 -672 -648 -672
WIRE 424 -672 424 -768
WIRE 424 -672 -168 -672
WIRE 552 -672 424 -672
WIRE 600 -672 552 -672
WIRE 712 -672 680 -672
WIRE 728 -672 712 -672
WIRE 824 -672 808 -672
WIRE 424 -656 424 -672
WIRE 552 -624 552 -672
WIRE -616 -576 -648 -576
WIRE 376 -576 -168 -576
WIRE 424 -544 424 -560
WIRE 552 -544 552 -560
WIRE -104 -480 -168 -480
WIRE 712 -480 712 -672
WIRE 712 -480 -104 -480
WIRE -104 -464 -104 -480
WIRE -104 -384 -104 -400
WIRE -104 -384 -168 -384
WIRE 824 -384 824 -672
WIRE 824 -384 -104 -384
WIRE 328 -368 328 -976
WIRE 280 -288 -168 -288
WIRE -8 -192 -8 -896
WIRE -8 -192 -168 -192
WIRE 88 -192 -8 -192
WIRE 328 -192 328 -272
WIRE 328 -192 152 -192
WIRE 328 -96 328 -192
WIRE 328 -96 -168 -96
WIRE 472 -96 328 -96
WIRE 600 -96 472 -96
WIRE 712 -96 680 -96
WIRE 728 -96 712 -96
WIRE 824 -96 824 -384
WIRE 824 -96 808 -96
WIRE 328 -80 328 -96
WIRE 472 -48 472 -96
WIRE 280 0 -168 0
WIRE 328 32 328 16
WIRE 472 32 472 16
WIRE -616 96 -648 96
WIRE -104 96 -168 96
WIRE 712 96 712 -96
WIRE 712 96 -104 96
WIRE -104 112 -104 96
WIRE -792 192 -808 192
WIRE -712 192 -728 192
WIRE -616 192 -632 192
WIRE -104 192 -104 176
WIRE -104 192 -168 192
WIRE 824 192 824 -96
WIRE 824 192 -104 192
WIRE 248 208 248 -976
WIRE -696 288 -712 288
WIRE -616 288 -632 288
WIRE 200 288 -168 288
WIRE -616 384 -648 384
WIRE -136 384 -136 -896
WIRE -136 384 -168 384
WIRE 8 384 -136 384
WIRE 248 384 248 304
WIRE 248 384 72 384
WIRE -696 480 -824 480
WIRE -616 480 -696 480
WIRE 248 480 248 384
WIRE 248 480 -168 480
WIRE 440 480 248 480
WIRE 600 480 440 480
WIRE 712 480 680 480
WIRE 728 480 712 480
WIRE 824 480 824 192
WIRE 824 480 808 480
WIRE -696 496 -696 480
WIRE 248 496 248 480
WIRE 440 528 440 480
WIRE -920 576 -952 576
WIRE -824 576 -824 480
WIRE -824 576 -840 576
WIRE -808 576 -824 576
WIRE -696 576 -696 560
WIRE -696 576 -728 576
WIRE -616 576 -696 576
WIRE 200 576 -168 576
WIRE 248 608 248 592
WIRE 440 608 440 592
WIRE -616 672 -696 672
WIRE -104 672 -168 672
WIRE 712 672 712 480
WIRE 712 672 -104 672
WIRE -104 688 -104 672
WIRE -616 768 -648 768
WIRE -104 768 -104 752
WIRE -104 768 -168 768
WIRE 824 768 824 480
WIRE 824 768 -104 768
WIRE -392 816 -392 800
WIRE -648 864 -648 768
WIRE 824 864 824 768
WIRE 824 864 -648 864
WIRE 952 864 824 864
WIRE 824 880 824 864
WIRE 952 880 952 864
WIRE -696 960 -696 672
WIRE 824 960 824 944
WIRE 824 960 -696 960
WIRE 824 976 824 960
WIRE 952 976 952 960
FLAG -392 816 0
FLAG -808 -864 0
FLAG 424 -544 0
FLAG 552 -544 0
FLAG 328 32 0
FLAG 472 32 0
FLAG 248 608 0
FLAG 440 608 0
FLAG 824 976 0
FLAG 952 976 0
FLAG -952 576 0
FLAG 952 864 OUT
FLAG -648 384 0
FLAG -712 288 0
FLAG -808 192 0
FLAG -808 -976 IN
SYMBOL VOLTAGE -808 -976 R0
SYMATTR InstName V1
SYMATTR Value 6
SYMBOL NMOS 376 -944 R0
SYMATTR InstName Q1
SYMATTR Value Si4866DY
SYMBOL nmos 376 -656 R0
SYMATTR InstName Q2
SYMATTR Value Si4866DY
SYMBOL cap 136 -784 M90
SYMATTR InstName C1
SYMATTR Value .1
SYMBOL schottky 88 -960 R0
SYMATTR InstName D1
SYMATTR Value 1N5817
SYMBOL schottky 536 -560 M180
SYMATTR InstName D2
SYMATTR Value 1N5817
SYMBOL RES 712 -688 M90
SYMATTR InstName R1
SYMATTR Value .003
SYMBOL cap -120 -464 R0
SYMATTR InstName C2
SYMATTR Value 1000p
SYMBOL ind 584 -656 R270
SYMATTR InstName L1
SYMATTR Value 1
SYMBOL RES -712 -976 R0
SYMATTR InstName R2
SYMATTR Value 10K
SYMBOL nmos 280 -368 R0
SYMATTR InstName Q3
SYMATTR Value Si4866DY
SYMBOL nmos 280 -80 R0
SYMATTR InstName Q4
SYMATTR Value Si4866DY
SYMBOL cap 88 -208 M90
SYMATTR InstName C3
SYMATTR Value .1
SYMBOL schottky -24 -960 R0
SYMATTR InstName D3
SYMATTR Value 1N5817
SYMBOL schottky 456 16 M180
SYMATTR InstName D4
SYMATTR Value 1N5817
SYMBOL res 712 -112 M90
SYMATTR InstName R3
SYMATTR Value .003
SYMBOL cap -120 112 R0
SYMATTR InstName C4
SYMATTR Value 1000p
SYMBOL ind 584 -80 R270
SYMATTR InstName L2
SYMATTR Value 1
SYMBOL nmos 200 208 R0
SYMATTR InstName Q5
SYMATTR Value Si4866DY
SYMBOL nmos 200 496 R0
SYMATTR InstName Q6
SYMATTR Value Si4866DY
SYMBOL cap 8 368 M90
SYMATTR InstName C5
SYMATTR Value .1
SYMBOL schottky 424 592 M180
SYMATTR InstName D5
SYMATTR Value 1N5817
SYMBOL res 712 464 M90
SYMATTR InstName R4
SYMATTR Value .003
SYMBOL ind 584 496 R270
SYMATTR InstName L3
SYMATTR Value 1
SYMBOL schottky -152 -960 R0
SYMATTR InstName D6
SYMATTR Value 1N5817
SYMBOL cap -120 688 R0
SYMATTR InstName C6
SYMATTR Value 1000p
SYMBOL polcap 808 880 R0
SYMATTR Value 480
SYMATTR InstName C7
SYMATTR SpiceLine Rser=.01
SYMBOL cap -712 496 R0
SYMATTR InstName C8
SYMATTR Value 100p
SYMBOL cap -632 272 R90
SYMATTR InstName C9
SYMATTR Value 100p
SYMBOL cap -728 176 R90
SYMATTR InstName C10
SYMATTR Value 680p
SYMBOL res -616 176 R90
SYMATTR InstName R5
SYMATTR Value 5K
SYMBOL res -824 592 R270
SYMATTR InstName R6
SYMATTR Value 7.5K
SYMBOL res -936 592 R270
SYMATTR InstName R7
SYMATTR Value 6.04K
SYMBOL PowerProducts\\LTC3731H -392 -48 R0
SYMATTR InstName U1
SYMBOL res 936 864 R0
SYMATTR InstName Rload
SYMATTR Value .1