* SPICE netlist
XU1 MP_01 MP_02 MP_03 NC_04 N014 N016 N001 0 N017 MP_05 N019 MP_06 MP_07 MP_08 MP_09 MP_10 N018 N020 N015 N002 CAP N011 N013 N010 N008 N007 N012 N004 N004 OUT N003 N005 N006 IN MP_11 MP_12 N009 NC_13 0 LTC3350 ;pnba )))CAPGD)Vc)CAPFB)OUTFB)SGND)RT))ITST))))))CFP)CFN)VCAPP5)OUTFET)VCAP)ICAP)VCC2P5)SW)TGATE)BST)BGATE)DRVcc)INTVcc)VOUTSN)VOUTSP)VOUTM5)INFET)Vin)))PFI)_PFO)PGND
V1 IN 0 12
R1 IN N009 806K
R2 N009 0 100K
C1 N013 0 1
C2 N014 0 .01
R3 N017 0 71.5K
R4 N019 0 121
M1 N003 N006 IN IN IRF8910
C3 N003 N005 1
R5 OUT N003 16m
M2 OUT N002 CAP CAP IRF8910
C4 N004 0 4.7
M3 OUT N008 N010 N010 BSZ060NE2LS
M4 N010 N012 0 0 BSZ060NE2LS
L1 N010 N011 3.3 Rser=10m
R6 N011 CAP 6m
C5 CAP 0 22 x4 V=25 Irms=0 Rser=0.003 Lser=0 mfg="TDK" pn="C575OX5RIE226M" type="X5R"
D1 N004 N007 CMDSH2-3
C6 N007 N010 .1
C7 CAP N015 .1
C8 N018 N020 .1
R7 CAP N016 866K
R8 N016 0 118K
Csupercap CAP 0 1m Rser=.1
R9 OUT N001 866K
R10 N001 0 118K
C10 OUT 0 47 x2 V=6.3 Irms=0 Rser=0.002 Lser=0 mfg="TDK" pn="C4532X5ROJ47@M" type="X5R"
C11 OUT 0 2.2 x2 V=25 Irms=6.893 Rser=0.005 Lser=0 mfg="KEMET" pn="C1210C225K3PAC" type="X5R"
Rload OUT 0 10
.tran 10m startup

* LTspice schematic (.asc)
Version 4
SHEET 1 1632 1152
WIRE -432 -576 -672 -576
WIRE 128 -576 -432 -576
WIRE 240 -576 128 -576
WIRE 496 -576 240 -576
WIRE 608 -576 496 -576
WIRE 704 -576 608 -576
WIRE 816 -576 704 -576
WIRE -672 -560 -672 -576
WIRE 96 -560 -320 -560
WIRE 496 -560 496 -576
WIRE 608 -560 608 -576
WIRE 704 -560 704 -576
WIRE 816 -560 816 -576
WIRE 416 -544 -208 -544
WIRE -432 -528 -432 -576
WIRE -320 -528 -320 -560
WIRE -208 -528 -208 -544
WIRE 128 -480 128 -576
WIRE 416 -480 416 -544
WIRE 448 -480 416 -480
WIRE -672 -464 -672 -480
WIRE -640 -464 -672 -464
WIRE -576 -464 -640 -464
WIRE -32 -464 -64 -464
WIRE 16 -464 -32 -464
WIRE 608 -464 608 -496
WIRE 704 -464 704 -496
WIRE 816 -464 816 -480
WIRE -640 -448 -640 -464
WIRE 16 -448 16 -464
WIRE 96 -384 96 -560
WIRE 128 -384 128 -400
WIRE 128 -384 96 -384
WIRE -640 -368 -640 -384
WIRE -576 -368 -640 -368
WIRE -32 -368 -32 -464
WIRE -32 -368 -64 -368
WIRE 16 -368 16 -384
WIRE 128 -368 128 -384
WIRE -672 -352 -672 -464
WIRE -32 -352 -32 -368
WIRE -576 -272 -624 -272
WIRE -32 -272 -32 -288
WIRE -32 -272 -64 -272
WIRE 128 -272 128 -288
WIRE 240 -256 240 -576
WIRE -672 -176 -672 -256
WIRE -672 -176 -816 -176
WIRE -576 -176 -672 -176
WIRE 192 -176 -64 -176
WIRE -816 -160 -816 -176
WIRE -32 -160 -32 -272
WIRE -672 -80 -672 -96
WIRE -576 -80 -672 -80
WIRE -32 -80 -32 -96
WIRE -32 -80 -64 -80
WIRE 240 -80 240 -160
WIRE 240 -80 -32 -80
WIRE 272 -80 240 -80
WIRE 384 -80 352 -80
WIRE 400 -80 384 -80
WIRE 496 -80 496 -464
WIRE 496 -80 480 -80
WIRE 544 -80 496 -80
WIRE 624 -80 544 -80
WIRE -816 -64 -816 -80
WIRE 240 -64 240 -80
WIRE 544 -64 544 -80
WIRE 624 -64 624 -80
WIRE 192 16 -64 16
WIRE 544 32 544 0
WIRE 624 32 624 0
WIRE 240 48 240 32
WIRE 384 112 384 -80
WIRE 384 112 -64 112
WIRE -672 208 -688 208
WIRE -576 208 -608 208
WIRE -16 208 -64 208
WIRE 192 208 -16 208
WIRE 496 208 496 -80
WIRE 496 208 192 208
WIRE -16 224 -16 208
WIRE 192 240 192 208
WIRE -672 304 -688 304
WIRE -576 304 -608 304
WIRE -16 304 -16 288
WIRE -16 304 -64 304
WIRE 192 352 192 320
WIRE 192 352 48 352
WIRE 192 384 192 352
WIRE -672 400 -688 400
WIRE -576 400 -592 400
WIRE -16 400 -64 400
WIRE -16 416 -16 400
WIRE 192 480 192 464
WIRE -672 496 -688 496
WIRE -576 496 -592 496
WIRE -16 496 -16 480
WIRE -16 496 -64 496
WIRE -432 576 -432 560
WIRE -320 576 -320 560
WIRE -208 576 -208 560
WIRE 48 576 48 352
WIRE 48 576 -208 576
FLAG -432 576 0
FLAG -320 576 0
FLAG -816 -64 0
FLAG -672 0 0
FLAG -688 208 0
FLAG -688 304 0
FLAG -688 400 0
FLAG -688 496 0
FLAG 16 -368 0
FLAG 240 48 0
FLAG 544 32 0
FLAG 192 480 0
FLAG 624 32 0
FLAG 128 -272 0
FLAG 608 -464 0
FLAG 704 -464 0
FLAG 816 -464 0
FLAG -816 -176 IN
FLAG 816 -576 OUT
FLAG 624 -80 CAP
SYMBOL PowerProducts\\LTC3350 -320 16 R0
SYMATTR InstName U1
SYMBOL voltage -816 -176 R0
SYMATTR InstName V1
SYMATTR Value 12
SYMBOL res -688 -192 R0
SYMATTR InstName R1
SYMATTR Value 806K
SYMBOL res -688 -96 R0
SYMATTR InstName R2
SYMATTR Value 100K
SYMBOL cap -608 192 R90
SYMATTR InstName C1
SYMATTR Value 1
SYMBOL cap -608 288 R90
SYMATTR InstName C2
SYMATTR Value .01
SYMBOL res -576 384 R90
SYMATTR InstName R3
SYMATTR Value 71.5K
SYMBOL res -576 480 R90
SYMATTR InstName R4
SYMATTR Value 121
SYMBOL nmos -624 -352 M0
SYMATTR InstName M1
SYMATTR Value IRF8910
SYMBOL cap -656 -448 R0
SYMATTR InstName C3
SYMATTR Value 1
SYMBOL res -688 -576 R0
SYMATTR InstName R5
SYMATTR Value 16m
SYMBOL nmos 448 -560 R0
SYMATTR InstName M2
SYMATTR Value IRF8910
SYMBOL cap 0 -448 R0
SYMATTR InstName C4
SYMATTR Value 4.7
SYMBOL nmos 192 -256 R0
SYMATTR InstName M3
SYMATTR Value BSZ060NE2LS
SYMBOL nmos 192 -64 R0
SYMATTR InstName M4
SYMATTR Value BSZ060NE2LS
SYMBOL ind 256 -64 R270
SYMATTR InstName L1
SYMATTR Value 3.3
SYMATTR SpiceLine Rser=10m
SYMBOL res 384 -64 R270
SYMATTR InstName R6
SYMATTR Value 6m
SYMBOL cap 528 -64 R0
SYMATTR Value2 x4
SYMATTR InstName C5
SYMATTR Value 22
SYMATTR SpiceLine V=25 Irms=0 Rser=0.003 Lser=0 mfg="TDK" pn="C575OX5RIE226M" type="X5R"
SYMBOL schottky -48 -352 R0
SYMATTR InstName D1
SYMATTR Value CMDSH2-3
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL cap -48 -160 R0
SYMATTR InstName C6
SYMATTR Value .1
SYMBOL cap -32 224 R0
SYMATTR InstName C7
SYMATTR Value .1
SYMBOL cap -32 416 R0
SYMATTR InstName C8
SYMATTR Value .1
SYMBOL res 176 224 R0
SYMATTR InstName R7
SYMATTR Value 866K
SYMBOL res 176 368 R0
SYMATTR InstName R8
SYMATTR Value 118K
SYMBOL cap 608 -64 R0
SYMATTR InstName Csupercap
SYMATTR Value 1m
SYMATTR SpiceLine Rser=.1
SYMBOL res 112 -496 R0
SYMATTR InstName R9
SYMATTR Value 866K
SYMBOL res 112 -384 R0
SYMATTR InstName R10
SYMATTR Value 118K
SYMBOL cap 592 -560 R0
SYMATTR Value2 x2
SYMATTR InstName C10
SYMATTR Value 47
SYMATTR SpiceLine V=6.3 Irms=0 Rser=0.002 Lser=0 mfg="TDK" pn="C4532X5ROJ47@M" type="X5R"
SYMBOL cap 688 -560 R0
SYMATTR Value2 x2
SYMATTR InstName C11
SYMATTR Value 2.2
SYMATTR SpiceLine V=25 Irms=6.893 Rser=0.005 Lser=0 mfg="KEMET" pn="C1210C225K3PAC" type="X5R"
SYMBOL res 800 -576 R0
SYMATTR InstName Rload
SYMATTR Value 10