* SPICE netlist
MQ1 N003 N011 0 0 Si4420DY
R1 IN N001 1.5Meg
D1 N008 N007 1N5818
C1 N008 0 4.7
D2 0 N003 1N5818
MQ2 IN N002 N003 N003 Si4420DY
L1 N003 OUT 3
C2 OUT 0 470 Rser=50m
R2 N013 N012 1K
C3 N012 0 .01
R3 N010 IN 3.3K
V1 IN 0 6
C4 N015 0 .0001
C5 N003 N007 .22
XU1 N015 OUT N010 N014 N009 N013 0 N001 N016 NC_01 0 N006 N005 0 IN IN N008 N011 0 0 N003 N003 N002 N007 LTC3713 ;pnba Run/SS)Von)Pgood)Vrng)FCB)Ith)SGND1)Ion)FB1)_SHDN)SGND2)FB2)SW2)PGND2)Vin2)Vin1)INTVcc)BG)PGND1)Sense-)Sense+)SW1)TG)Boost
R4 OUT N016 30.1K
R5 N016 0 14K
L2 IN N005 4.7
D3 N005 N004 1N5817
C7 N004 0 15 Rser=.1
R6 N004 N006 100K
R7 N006 0 15K
Rload1 OUT 0 .25
Rload2 N004 0 20
.tran 1m startup

* LTspice schematic (.asc)
Version 4
SHEET 1 1840 864
WIRE -520 -432 -664 -432
WIRE -344 -432 -520 -432
WIRE -104 -432 -344 -432
WIRE 120 -432 -104 -432
WIRE 472 -432 120 -432
WIRE -520 -416 -520 -432
WIRE 120 -416 120 -432
WIRE 472 -336 472 -432
WIRE -520 -320 -520 -336
WIRE -104 -320 -104 -432
WIRE 120 -320 120 -336
WIRE -344 -256 -344 -432
WIRE -264 -256 -344 -256
WIRE 424 -256 280 -256
WIRE -344 -240 -344 -256
WIRE 344 -192 280 -192
WIRE 472 -192 472 -240
WIRE 472 -192 344 -192
WIRE 504 -192 472 -192
WIRE 568 -192 504 -192
WIRE 696 -192 648 -192
WIRE 760 -192 696 -192
WIRE 824 -192 760 -192
WIRE 920 -192 824 -192
WIRE 824 -176 824 -192
WIRE 920 -176 920 -192
WIRE 504 -160 504 -192
WIRE -760 -128 -904 -128
WIRE -616 -128 -760 -128
WIRE -488 -128 -616 -128
WIRE -344 -128 -344 -160
WIRE -344 -128 -424 -128
WIRE -264 -128 -344 -128
WIRE 344 -128 344 -192
WIRE 344 -128 280 -128
WIRE -904 -112 -904 -128
WIRE -760 -112 -760 -128
WIRE -616 -112 -616 -128
WIRE 824 -80 824 -112
WIRE 920 -80 920 -96
WIRE -264 -64 -360 -64
WIRE 344 -64 280 -64
WIRE 504 -64 504 -96
WIRE 760 -48 760 -192
WIRE -904 -16 -904 -32
WIRE -760 -16 -760 -48
WIRE -616 -16 -616 -32
WIRE -360 -16 -360 -64
WIRE -360 -16 -616 -16
WIRE -616 0 -616 -16
WIRE 344 0 280 0
WIRE 344 16 344 0
WIRE 472 48 472 -192
WIRE -264 64 -312 64
WIRE -616 96 -616 80
WIRE -664 128 -664 -432
WIRE -584 128 -664 128
WIRE -264 128 -504 128
WIRE 424 128 280 128
WIRE -456 192 -488 192
WIRE -376 192 -392 192
WIRE -264 192 -296 192
WIRE 472 192 472 144
WIRE 472 192 280 192
WIRE 472 208 472 192
WIRE -264 256 -312 256
WIRE 696 256 696 -192
WIRE 696 256 280 256
WIRE -344 320 -360 320
WIRE -264 320 -280 320
WIRE 760 320 760 32
WIRE 760 320 280 320
WIRE 760 336 760 320
WIRE -184 400 -184 384
WIRE -56 400 -56 384
WIRE 72 400 72 384
WIRE 200 400 200 384
WIRE 760 432 760 416
FLAG -184 400 0
FLAG 200 400 0
FLAG 472 208 0
FLAG 344 80 0
FLAG 504 -64 0
FLAG 920 -80 0
FLAG 824 -80 0
FLAG -488 192 0
FLAG -520 -320 0
FLAG -360 320 0
FLAG 920 -192 OUT
FLAG 760 432 0
FLAG 72 400 0
FLAG -56 400 0
FLAG -760 -16 0
FLAG -616 96 0
FLAG -904 -16 0
FLAG -520 -432 IN
SYMBOL NMOS 424 48 R0
SYMATTR InstName Q1
SYMATTR Value Si4420DY
SYMBOL RES 104 -432 R0
SYMATTR InstName R1
SYMATTR Value 1.5Meg
SYMBOL schottky 328 0 M180
SYMATTR InstName D1
SYMATTR Value 1N5818
SYMBOL cap 328 16 R0
SYMATTR Value 4.7
SYMATTR InstName C1
SYMBOL schottky 488 -96 M180
SYMATTR InstName D2
SYMATTR Value 1N5818
SYMBOL nmos 424 -336 R0
SYMATTR InstName Q2
SYMATTR Value Si4420DY
SYMBOL ind 552 -176 R270
SYMATTR InstName L1
SYMATTR Value 3
SYMBOL polcap 808 -176 R0
SYMATTR SpiceLine Rser=50m
SYMATTR InstName C2
SYMATTR Value 470
SYMBOL res -280 176 R90
SYMATTR InstName R2
SYMATTR Value 1K
SYMBOL cap -392 176 R90
SYMATTR InstName C3
SYMATTR Value .01
SYMBOL res -488 112 R90
SYMATTR InstName R3
SYMATTR Value 3.3K
SYMBOL VOLTAGE -520 -432 R0
SYMATTR InstName V1
SYMATTR Value 6
SYMBOL cap -280 336 M270
SYMATTR InstName C4
SYMATTR Value .0001
SYMBOL cap 328 -128 R0
SYMATTR Value .22
SYMATTR InstName C5
SYMBOL POWERPRODUCTS\\LTC3713 8 32 R0
SYMATTR InstName U1
SYMBOL res 744 -64 R0
SYMATTR InstName R4
SYMATTR Value 30.1K
SYMBOL res 744 320 R0
SYMATTR InstName R5
SYMATTR Value 14K
SYMBOL ind -328 -256 M0
SYMATTR InstName L2
SYMATTR Value 4.7
SYMBOL schottky -424 -144 R90
SYMATTR InstName D3
SYMATTR Value 1N5817
SYMBOL polcap -776 -112 R0
SYMATTR SpiceLine Rser=.1
SYMATTR InstName C7
SYMATTR Value 15
SYMBOL res -632 -128 R0
SYMATTR InstName R6
SYMATTR Value 100K
SYMBOL res -632 -16 R0
SYMATTR InstName R7
SYMATTR Value 15K
SYMBOL res 904 -192 R0
SYMATTR InstName Rload1
SYMATTR Value .25
SYMBOL res -920 -128 R0
SYMATTR InstName Rload2
SYMATTR Value 20