* SPICE netlist
R1 N011 N010 20K
C1 N010 0 500p
C2 N013 0 .001
XU1 N013 OUT N009 NC_01 N011 0 N004 OUT N003 N003 0 N007 N002 0 N003 N001 N001 N012 0 0 N006 N006 N005 N008 LTC3718 ;pnba Run/SS)Von)Pgood)Vrng)Ith)SGND1)Ion)FB1)Vref)_SHDN)SGND2)FB2)SW2)PGND2)Vin2)Vin1)INTVcc)BG)PGND1)Sense-)Sense+)SW1)TG)Boost
MQ1 N006 N012 0 0 IRF7303
D1 N001 N008 1N5818
C3 N001 0 10
D2 0 N006 1N5818
MQ2 N003 N005 N006 N006 IRF7303
L1 N006 OUT .8
C4 OUT 0 470
C5 N006 N008 .33
R2 N003 N004 237K
L2 N002 N003 1.8
D3 N002 N001 BAT54
R3 N001 N007 37.4K
R4 N007 0 12.1K
V1 N003 0 2.5
D4 N006 N003 1N5818
R5 N009 N001 20K
Rload OUT 0 1
.tran 2m startup

* LTspice schematic (.asc)
Version 4
SHEET 1 1744 832
WIRE -712 -416 -856 -416
WIRE -328 -416 -712 -416
WIRE 264 -416 -328 -416
WIRE -712 -352 -712 -416
WIRE -664 -352 -712 -352
WIRE -568 -352 -600 -352
WIRE -552 -352 -568 -352
WIRE -440 -352 -472 -352
WIRE -168 -352 -440 -352
WIRE -8 -352 -168 -352
WIRE 152 -352 -8 -352
WIRE 456 -352 152 -352
WIRE 568 -352 456 -352
WIRE 696 -352 568 -352
WIRE 696 -336 696 -352
WIRE 264 -320 264 -416
WIRE 312 -320 264 -320
WIRE -8 -304 -8 -352
WIRE 312 -288 312 -320
WIRE 568 -272 568 -352
WIRE -856 -240 -856 -416
WIRE -712 -240 -712 -352
WIRE 696 -240 696 -256
WIRE 456 -224 456 -352
WIRE -328 -208 -328 -416
WIRE -168 -208 -168 -352
WIRE -8 -208 -8 -224
WIRE 152 -208 152 -352
WIRE 312 -208 312 -224
WIRE -440 -144 -440 -352
WIRE -408 -144 -440 -144
WIRE 408 -144 232 -144
WIRE -568 -80 -568 -352
WIRE -408 -80 -568 -80
WIRE 312 -80 232 -80
WIRE 456 -80 456 -128
WIRE 456 -80 312 -80
WIRE 568 -80 568 -208
WIRE 568 -80 456 -80
WIRE 616 -80 568 -80
WIRE 728 -80 696 -80
WIRE 776 -80 728 -80
WIRE 872 -80 776 -80
WIRE 776 -64 776 -80
WIRE 872 -64 872 -80
WIRE 568 -48 568 -80
WIRE -808 -16 -824 -16
WIRE -712 -16 -712 -160
WIRE -712 -16 -728 -16
WIRE -408 -16 -712 -16
WIRE 312 -16 232 -16
WIRE 568 32 568 16
WIRE 776 32 776 0
WIRE 872 32 872 16
WIRE 264 48 264 -320
WIRE 264 48 232 48
WIRE 312 48 264 48
WIRE -856 112 -856 -160
WIRE -408 112 -856 112
WIRE 456 112 456 -80
WIRE 456 112 232 112
WIRE 456 128 456 112
WIRE -600 176 -632 176
WIRE -504 176 -536 176
WIRE -408 176 -424 176
WIRE 360 176 232 176
WIRE 360 208 360 176
WIRE 408 208 360 208
WIRE -552 240 -584 240
WIRE -408 240 -488 240
WIRE 456 240 456 224
WIRE 456 240 232 240
WIRE 456 256 456 240
WIRE -408 304 -472 304
WIRE 264 304 232 304
WIRE -328 384 -328 368
WIRE -168 384 -168 368
WIRE -8 384 -8 368
WIRE 152 384 152 368
WIRE -472 416 -472 304
WIRE 264 416 264 304
WIRE 264 416 -472 416
WIRE 728 416 728 -80
WIRE 728 416 264 416
FLAG -632 176 0
FLAG -584 240 0
FLAG 456 256 0
FLAG 312 -208 0
FLAG 568 32 0
FLAG 872 32 0
FLAG 776 32 0
FLAG 872 -80 OUT
FLAG -328 384 0
FLAG -168 384 0
FLAG -8 384 0
FLAG 152 384 0
FLAG -824 -16 0
FLAG 696 -240 0
SYMBOL RES -408 160 R90
SYMATTR InstName R1
SYMATTR Value 20K
SYMBOL cap -536 160 R90
SYMATTR InstName C1
SYMATTR Value 500p
SYMBOL cap -488 224 R90
SYMATTR InstName C2
SYMATTR Value .001
SYMBOL POWERPRODUCTS\\LTC3718 -88 80 R0
SYMATTR InstName U1
SYMBOL NMOS 408 128 R0
SYMATTR InstName Q1
SYMATTR Value IRF7303
SYMBOL schottky 296 48 M180
SYMATTR InstName D1
SYMATTR Value 1N5818
SYMBOL cap 296 -288 R0
SYMATTR InstName C3
SYMATTR Value 10
SYMBOL schottky 552 16 M180
SYMATTR InstName D2
SYMATTR Value 1N5818
SYMBOL nmos 408 -224 R0
SYMATTR InstName Q2
SYMATTR Value IRF7303
SYMBOL ind 600 -64 R270
SYMATTR InstName L1
SYMATTR Value .8
SYMBOL polcap 760 -64 R0
SYMATTR InstName C4
SYMATTR Value 470
SYMBOL cap 296 -80 R0
SYMATTR InstName C5
SYMATTR Value .33
SYMBOL RES -24 -320 R0
SYMATTR InstName R2
SYMATTR Value 237K
SYMBOL ind -568 -336 R270
SYMATTR InstName L2
SYMATTR Value 1.8
SYMBOL schottky -600 -368 R90
SYMATTR InstName D3
SYMATTR Value BAT54
SYMBOL RES -728 -256 R0
SYMATTR InstName R3
SYMATTR Value 37.4K
SYMBOL RES -712 -32 R90
SYMATTR InstName R4
SYMATTR Value 12.1K
SYMBOL VOLTAGE 696 -352 R0
SYMATTR InstName V1
SYMATTR Value 2.5
SYMBOL schottky 552 -208 M180
SYMATTR InstName D4
SYMATTR Value 1N5818
SYMBOL RES -872 -144 M180
SYMATTR InstName R5
SYMATTR Value 20K
SYMBOL res 856 -80 R0
SYMATTR InstName Rload
SYMATTR Value 1