* SPICE netlist
XU1 N005 N006 NC_01 IN N004 N001 N003 N002 NC_02 NC_03 N008 N010 NC_04 CAP OUT N007 MP_05 N002 N009 N011 0 LTC3355 Delay_RSTB=1m ;pnba PFI)FB)Mode)Vins)Vin)Vinm5)SW1)EN_CHG)CPgood)PFOB)CFB)Ichg)RSTB)Vcap)Vout)SW2))INTVcc)Vcbst)Ibstpk)GND
V1 IN 0 12
C1 N001 N004 1
C2 0 N002 1
R1 N004 IN .091
R2 IN N005 2.49Meg
R3 N005 0 200K
R4 N010 0 60.4K
R5 N011 0 200K
C3 N009 0 220p Rser=154K
L1 N003 OUT 6.8 Rser=20m
D1 0 N003 B520C
R6 OUT N006 402K
R7 N006 0 100K
C4 OUT 0 47 Rser=20m
C5 OUT N006 4.7p
Rload OUT 0 50
L2 N007 CAP 3.3 Rser=20m
R8 CAP N008 665K
R9 N008 0 332K
CSCAP CAP 0 1m Rser=20m
D2 N007 OUT B520C
.tran 5m startup

* LTspice schematic (.asc)
Version 4
SHEET 1 1136 1024
WIRE -24 -496 -24 -512
WIRE -120 -432 -488 -432
WIRE -488 -416 -488 -432
WIRE -24 -416 -24 -432
WIRE -24 -416 -232 -416
WIRE -120 -400 -120 -432
WIRE -24 -400 -24 -416
WIRE 152 -352 104 -352
WIRE 200 -352 152 -352
WIRE 312 -352 280 -352
WIRE 408 -352 312 -352
WIRE 488 -352 408 -352
WIRE 568 -352 488 -352
WIRE -488 -336 -488 -352
WIRE -216 -336 -488 -336
WIRE 104 -336 104 -352
WIRE 104 -336 72 -336
WIRE 152 -336 152 -352
WIRE 488 -336 488 -352
WIRE 568 -336 568 -352
WIRE 152 -256 152 -272
WIRE -488 -240 -488 -256
WIRE -488 -240 -568 -240
WIRE -376 -240 -488 -240
WIRE -216 -240 -376 -240
WIRE 104 -240 72 -240
WIRE 408 -240 408 -352
WIRE 488 -240 488 -272
WIRE 568 -240 568 -256
WIRE -568 -224 -568 -240
WIRE 104 -224 104 -240
WIRE 152 -224 104 -224
WIRE 312 -224 312 -352
WIRE 312 -224 152 -224
WIRE -376 -144 -376 -160
WIRE -216 -144 -376 -144
WIRE 312 -144 312 -160
WIRE 312 -144 72 -144
WIRE 408 -144 408 -160
WIRE 408 -144 312 -144
WIRE -568 -128 -568 -144
WIRE -376 -128 -376 -144
WIRE 152 -128 152 -224
WIRE 408 -128 408 -144
WIRE 312 -48 72 -48
WIRE -376 -32 -376 -48
WIRE 408 -32 408 -48
WIRE 152 48 152 -64
WIRE 152 48 72 48
WIRE 200 48 152 48
WIRE 312 48 312 -48
WIRE 312 48 280 48
WIRE 440 48 312 48
WIRE 312 64 312 48
WIRE 440 64 440 48
WIRE 312 144 72 144
WIRE 440 144 440 128
WIRE 312 160 312 144
WIRE -232 240 -232 -416
WIRE -216 240 -232 240
WIRE 88 240 72 240
WIRE 312 256 312 240
WIRE 120 336 72 336
WIRE 200 336 184 336
WIRE -120 416 -120 400
WIRE -24 416 -24 400
WIRE -120 512 -120 496
WIRE -24 512 -24 496
FLAG 88 240 0
FLAG -568 -128 0
FLAG -24 -512 0
FLAG -376 -32 0
FLAG -120 512 0
FLAG -24 512 0
FLAG 200 336 0
FLAG 152 -256 0
FLAG 408 -32 0
FLAG 488 -240 0
FLAG 568 -240 0
FLAG 312 256 0
FLAG 440 144 0
FLAG -568 -240 IN
FLAG 568 -352 OUT
FLAG 440 48 CAP
SYMBOL PowerProducts\\LTC3355 -72 0 R0
SYMATTR InstName U1
SYMBOL voltage -568 -240 R0
SYMATTR InstName V1
SYMATTR Value 12
SYMBOL cap -504 -416 R0
SYMATTR InstName C1
SYMATTR Value 1
SYMBOL cap -40 -496 R0
SYMATTR InstName C2
SYMATTR Value 1
SYMBOL res -504 -352 R0
SYMATTR InstName R1
SYMATTR Value .091
SYMBOL res -392 -256 R0
SYMATTR InstName R2
SYMATTR Value 2.49Meg
SYMBOL res -392 -144 R0
SYMATTR InstName R3
SYMATTR Value 200K
SYMBOL res -136 400 R0
SYMATTR Value 60.4K
SYMATTR InstName R4
SYMBOL res -40 400 R0
SYMATTR InstName R5
SYMATTR Value 200K
SYMBOL cap 120 352 R270
SYMATTR SpiceLine Rser=154K
SYMATTR InstName C3
SYMATTR Value 220p
SYMBOL ind 184 -336 R270
SYMATTR InstName L1
SYMATTR Value 6.8
SYMATTR SpiceLine Rser=20m
SYMBOL schottky 136 -272 M180
SYMATTR InstName D1
SYMATTR Value B520C
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL res 392 -256 R0
SYMATTR InstName R6
SYMATTR Value 402K
SYMBOL res 392 -144 R0
SYMATTR InstName R7
SYMATTR Value 100K
SYMBOL cap 472 -336 R0
SYMATTR InstName C4
SYMATTR Value 47
SYMATTR SpiceLine Rser=20m
SYMBOL cap 296 -224 R0
SYMATTR InstName C5
SYMATTR Value 4.7p
SYMBOL res 552 -352 R0
SYMATTR InstName Rload
SYMATTR Value 50
SYMBOL ind 184 64 R270
SYMATTR InstName L2
SYMATTR Value 3.3
SYMATTR SpiceLine Rser=20m
SYMBOL res 296 48 R0
SYMATTR InstName R8
SYMATTR Value 665K
SYMBOL res 296 144 R0
SYMATTR InstName R9
SYMATTR Value 332K
SYMBOL cap 424 64 R0
SYMATTR InstName CSCAP
SYMATTR Value 1m
SYMATTR SpiceLine Rser=20m
SYMBOL schottky 136 -64 M180
SYMATTR InstName D2
SYMATTR Value B520C
SYMATTR Description Diode
SYMATTR Type diode