* SPICE netlist
L1 IN N001 2.7 Rpar=2K
V1 IN 0 1.8
R1 N012 0 75K
R2 N010 0 15K
R3 N007 0 20K
C2 N007 0 .001
C3 N011 0 1000p
C4 N008 N009 330p
R4 OUT N006 1Meg
R5 N006 0 590K
C5 OUT N005 22p
C6 OUT 0 4.7 Rser=.01 X4
Rload OUT 0 50
XU1 0 IN N001 OUT OUT N002 0 N011 0 OUT 0 N006 N008 N007 NC_01 NC_02 0 N012 N003 OUT OUT N004 0 IN N010 0 LTC3425 ;pnba GNDA)VIN)SWA)VOUTA)VOUTB)SWB)GNDB)SS)REFEN)VOUTS)SGND)FB)COMP)BURST)REFOUT)PGOOD)GNDC)ILIM)SWC)VOUTC)VOUTD)SWD)GNDD)_SHDN)RT)CCM
R6 N009 0 33K
R7 N005 N006 10K
L2 IN N002 2.7 Rpar=2K
L3 IN N003 2.7 Rpar=2K
L4 IN N004 2.7 Rpar=2K
.tran 1m startup

* LTspice schematic (.asc)
Version 4
SHEET 1 1184 864
WIRE -352 -432 -400 -432
WIRE -288 -432 -352 -432
WIRE -192 -432 -288 -432
WIRE -112 -432 -192 -432
WIRE -32 -432 -112 -432
WIRE 48 -432 -32 -432
WIRE 128 -432 48 -432
WIRE -400 -400 -400 -432
WIRE -112 -400 -112 -432
WIRE -32 -400 -32 -432
WIRE 48 -400 48 -432
WIRE 128 -400 128 -432
WIRE -400 -288 -400 -320
WIRE -192 -288 -192 -432
WIRE -112 -288 -112 -320
WIRE -32 -288 -32 -320
WIRE 48 -288 48 -320
WIRE 128 -288 128 -320
WIRE -288 -224 -288 -432
WIRE -256 -224 -288 -224
WIRE 224 -224 192 -224
WIRE 272 -224 224 -224
WIRE 368 -224 272 -224
WIRE 480 -224 368 -224
WIRE 544 -224 480 -224
WIRE 592 -224 544 -224
WIRE 368 -208 368 -224
WIRE 480 -208 480 -224
WIRE 592 -208 592 -224
WIRE 272 -192 272 -224
WIRE 224 -176 224 -224
WIRE 224 -176 192 -176
WIRE 224 -128 224 -176
WIRE 224 -128 192 -128
WIRE 480 -112 480 -144
WIRE 592 -112 592 -128
WIRE 368 -96 368 -144
WIRE 224 -80 224 -128
WIRE 224 -80 192 -80
WIRE -256 -32 -272 -32
WIRE 224 -32 224 -80
WIRE 224 -32 192 -32
WIRE 272 0 272 -112
WIRE 368 0 368 -16
WIRE 368 0 272 0
WIRE -256 64 -272 64
WIRE 272 64 272 0
WIRE 272 64 192 64
WIRE 304 64 272 64
WIRE 400 64 384 64
WIRE -464 160 -576 160
WIRE -256 160 -464 160
WIRE 224 160 192 160
WIRE 304 160 288 160
WIRE 400 160 384 160
WIRE -576 176 -576 160
WIRE -464 176 -464 160
WIRE -352 256 -368 256
WIRE -256 256 -272 256
WIRE 224 256 192 256
WIRE 304 256 288 256
WIRE -576 272 -576 240
WIRE -464 272 -464 256
WIRE -352 352 -368 352
WIRE -256 352 -272 352
WIRE -192 432 -192 416
WIRE -112 432 -112 416
WIRE -32 432 -32 416
WIRE 48 432 48 416
WIRE 128 432 128 416
FLAG -400 -288 0
FLAG -272 64 0
FLAG -192 432 0
FLAG -112 432 0
FLAG -32 432 0
FLAG 48 432 0
FLAG 128 432 0
FLAG -368 256 0
FLAG -368 352 0
FLAG -464 272 0
FLAG -576 272 0
FLAG 304 256 0
FLAG 400 160 0
FLAG 400 64 0
FLAG 480 -112 0
FLAG 592 -112 0
FLAG 544 -224 OUT
FLAG -352 -432 IN
FLAG -272 -32 0
SYMBOL ind -128 -416 R0
SYMATTR InstName L1
SYMATTR Value 2.7
SYMATTR SpiceLine Rpar=2K
SYMBOL voltage -400 -416 R0
SYMATTR InstName V1
SYMATTR Value 1.8
SYMBOL res -256 336 R90
SYMATTR InstName R1
SYMATTR Value 75K
SYMBOL res -256 240 R90
SYMATTR InstName R2
SYMATTR Value 15K
SYMBOL res -480 160 R0
SYMATTR InstName R3
SYMATTR Value 20K
SYMBOL cap -592 176 R0
SYMATTR InstName C2
SYMATTR Value .001
SYMBOL cap 224 272 R270
SYMATTR InstName C3
SYMATTR Value 1000p
SYMBOL cap 224 176 R270
SYMATTR InstName C4
SYMATTR Value 330p
SYMBOL res 256 -208 R0
SYMATTR InstName R4
SYMATTR Value 1Meg
SYMBOL res 288 80 R270
SYMATTR InstName R5
SYMATTR Value 590K
SYMBOL cap 352 -208 R0
SYMATTR Value 22p
SYMATTR InstName C5
SYMBOL cap 464 -208 R0
SYMATTR Value 4.7
SYMATTR SpiceLine2 X4
SYMATTR InstName C6
SYMATTR SpiceLine Rser=.01
SYMBOL res 576 -224 R0
SYMATTR InstName Rload
SYMATTR Value 50
SYMBOL LTC3425 -32 64 R0
SYMATTR InstName U1
SYMBOL res 288 176 R270
SYMATTR InstName R6
SYMATTR Value 33K
SYMBOL res 352 -112 R0
SYMATTR InstName R7
SYMATTR Value 10K
SYMBOL ind -48 -416 R0
SYMATTR InstName L2
SYMATTR Value 2.7
SYMATTR SpiceLine Rpar=2K
SYMBOL ind 32 -416 R0
SYMATTR InstName L3
SYMATTR Value 2.7
SYMATTR SpiceLine Rpar=2K
SYMBOL ind 112 -416 R0
SYMATTR InstName L4
SYMATTR Value 2.7
SYMATTR SpiceLine Rpar=2K