* SPICE netlist
MQ1 IN N003 N005 N005 FDS6680A
C1 N004 N005 .47
MQ2 N005 N009 0 0 FDS6680A
D1 N001 N004 1N5818
L1 N005 N006 1
R1 N006 OUT 2m
D2 0 N005 1N5818
MQ3 IN N013 N015 N015 FDS6680A
C2 N014 N015 .47
MQ4 N015 N019 0 0 FDS6680A
L2 N015 N016 1
D3 0 N015 1N5818
C3 OUT 0 1000 x2 Rser=10m
R2 N017 0 16K
R3 N018 N017 16K
C4 N012 0 100p
C5 N011 0 1000p
R4 N012 N011 10K
C6 N010 0 250p
D4 N001 N014 1N5818
V1 IN 0 6
R5 N016 OUT 2m
XU1 N010 N006 OUT N017 N008 N007 MP_01 N012 0 N018 0 OUT OUT N016 0 N013 N015 N014 N019 0 N001 N002 N009 IN N004 N005 N003 LTC1929 ;pnba Run/SS)Sense1+)Sense1-)EAIN)PLLFLT)PLLIN))Ith)SGND)DiffOut)OS-)OS+)Sense2-)Sense2+)AmpMode)TG2)SW2)Boost2)BG2)PGND)INTVcc)EXTVcc)BG1)Vin)Boost1)SW1)TG1
C7 N001 0 10
Rload OUT 0 .5
.tran 1m startup

* LTspice schematic (.asc)
Version 4
SHEET 1 1776 1056
WIRE -472 -528 -680 -528
WIRE 344 -528 -472 -528
WIRE 424 -528 344 -528
WIRE -680 -512 -680 -528
WIRE -24 -512 -152 -512
WIRE 56 -512 -24 -512
WIRE 184 -512 56 -512
WIRE -24 -496 -24 -512
WIRE 56 -496 56 -512
WIRE 184 -496 184 -512
WIRE 424 -448 424 -528
WIRE -472 -432 -472 -528
WIRE -312 -432 -312 -448
WIRE -152 -432 -152 -512
WIRE -680 -416 -680 -432
WIRE -24 -416 -24 -432
WIRE 376 -368 -56 -368
WIRE 56 -304 56 -432
WIRE 56 -304 -56 -304
WIRE 424 -304 424 -352
WIRE 424 -304 248 -304
WIRE 504 -304 424 -304
WIRE 584 -304 504 -304
WIRE 680 -304 664 -304
WIRE 696 -304 680 -304
WIRE 792 -304 776 -304
WIRE 840 -304 792 -304
WIRE 888 -304 840 -304
WIRE 504 -288 504 -304
WIRE 888 -288 888 -304
WIRE 424 -256 424 -304
WIRE -568 -240 -584 -240
WIRE 56 -240 -56 -240
WIRE 248 -240 248 -304
WIRE 248 -240 56 -240
WIRE 504 -208 504 -224
WIRE 888 -192 888 -208
WIRE -568 -176 -584 -176
WIRE 376 -176 -56 -176
WIRE 424 -144 424 -160
WIRE 680 -112 680 -304
WIRE 680 -112 -56 -112
WIRE -664 -48 -696 -48
WIRE -568 -48 -600 -48
WIRE 792 -48 792 -304
WIRE 792 -48 -56 -48
WIRE 344 0 344 -528
WIRE -824 80 -872 80
WIRE -712 80 -744 80
WIRE -568 80 -712 80
WIRE 296 80 -56 80
WIRE -872 96 -872 80
WIRE -712 96 -712 80
WIRE -568 144 -600 144
WIRE 184 144 184 -432
WIRE 184 144 -56 144
WIRE 344 144 344 96
WIRE 344 144 280 144
WIRE 424 144 344 144
WIRE 520 144 424 144
WIRE 616 144 600 144
WIRE 632 144 616 144
WIRE 728 144 712 144
WIRE 840 144 840 -304
WIRE 840 144 728 144
WIRE 424 160 424 144
WIRE -872 176 -872 160
WIRE -712 176 -712 160
WIRE 840 176 840 144
WIRE 840 176 776 176
WIRE 344 192 344 144
WIRE 840 192 840 176
WIRE -664 208 -728 208
WIRE -568 208 -584 208
WIRE 184 208 -56 208
WIRE 280 208 280 144
WIRE 280 208 184 208
WIRE 424 240 424 224
WIRE -728 272 -728 208
WIRE -568 272 -728 272
WIRE 296 272 -56 272
WIRE 840 272 840 256
WIRE 840 272 808 272
WIRE -728 288 -728 272
WIRE 344 304 344 288
WIRE 840 304 840 272
WIRE -568 336 -648 336
WIRE 616 336 616 144
WIRE 616 336 -56 336
WIRE -728 384 -728 368
WIRE -568 400 -616 400
WIRE 728 400 728 144
WIRE 728 400 -56 400
WIRE -424 480 -424 464
WIRE -200 480 -200 464
WIRE -616 512 -616 400
WIRE 776 512 776 176
WIRE 776 512 -616 512
WIRE -648 528 -648 336
WIRE 808 528 808 272
WIRE 808 528 -648 528
FLAG 424 -144 0
FLAG 504 -208 0
FLAG 344 304 0
FLAG 424 240 0
FLAG -200 480 0
FLAG -424 480 0
FLAG 840 304 0
FLAG -728 384 0
FLAG -872 176 0
FLAG -712 176 0
FLAG -696 -48 0
FLAG -680 -416 0
FLAG 888 -192 0
FLAG -600 144 0
FLAG -24 -416 0
FLAG 888 -304 OUT
FLAG -680 -528 IN
SYMBOL NMOS 376 -448 R0
SYMATTR InstName Q1
SYMATTR Value FDS6680A
SYMBOL polcap 40 -304 R0
SYMATTR Value .47
SYMATTR InstName C1
SYMBOL nmos 376 -256 R0
SYMATTR InstName Q2
SYMATTR Value FDS6680A
SYMBOL schottky 40 -496 R0
SYMATTR InstName D1
SYMATTR Value 1N5818
SYMBOL ind 568 -288 R270
SYMATTR InstName L1
SYMATTR Value 1
SYMBOL RES 680 -320 M90
SYMATTR InstName R1
SYMATTR Value 2m
SYMBOL schottky 488 -224 M180
SYMATTR InstName D2
SYMATTR Value 1N5818
SYMBOL nmos 296 0 R0
SYMATTR InstName Q3
SYMATTR Value FDS6680A
SYMBOL polcap 168 144 R0
SYMATTR Value .47
SYMATTR InstName C2
SYMBOL nmos 296 192 R0
SYMATTR InstName Q4
SYMATTR Value FDS6680A
SYMBOL ind 504 160 R270
SYMATTR InstName L2
SYMATTR Value 1
SYMBOL schottky 408 224 M180
SYMATTR InstName D3
SYMATTR Value 1N5818
SYMBOL polcap 824 192 R0
SYMATTR Value2 x2
SYMATTR SpiceLine Rser=10m
SYMATTR InstName C3
SYMATTR Value 1000
SYMBOL res -744 272 R0
SYMATTR InstName R2
SYMATTR Value 16K
SYMBOL RES -568 192 R90
SYMATTR InstName R3
SYMATTR Value 16K
SYMBOL cap -728 96 R0
SYMATTR InstName C4
SYMATTR Value 100p
SYMBOL cap -888 96 R0
SYMATTR InstName C5
SYMATTR Value 1000p
SYMBOL res -728 64 R90
SYMATTR InstName R4
SYMATTR Value 10K
SYMBOL cap -600 -64 R90
SYMATTR InstName C6
SYMATTR Value 250p
SYMBOL schottky 168 -496 R0
SYMATTR InstName D4
SYMATTR Value 1N5818
SYMBOL VOLTAGE -680 -528 R0
SYMATTR InstName V1
SYMATTR Value 6
SYMBOL RES 616 128 M90
SYMATTR InstName R5
SYMATTR Value 2m
SYMBOL POWERPRODUCTS\\LTC1929 -312 16 R0
SYMATTR InstName U1
SYMBOL polcap -40 -496 R0
SYMATTR InstName C7
SYMATTR Value 10
SYMBOL res 872 -304 R0
SYMATTR InstName Rload
SYMATTR Value .5