* SPICE netlist
V1 IN 0 12
C1 N001 0 4.7
L1 N002 OUT1 1
C2 OUT1 0 47
R1 OUT1 0 2
C3 OUT1 N004 22p Rpar=619K
R2 N004 0 196K
L2 N006 OUT2 2.2
C4 OUT2 0 47
R3 OUT2 0 2.7
C5 OUT2 N008 22p Rpar=619K
R4 N008 0 137K
L3 N003 OUT3 1
C6 OUT3 0 47
R5 OUT3 0 1.4
C7 OUT3 N005 10p Rpar=619K
R6 N005 0 309K
L4 N007 OUT4 3.3
C8 OUT4 0 47
R7 OUT4 0 4
C9 OUT4 N009 22p Rpar=619K
R8 N009 0 84.5K
XU1 0 N001 IN IN IN IN IN 0 MP_01 0 N002 N004 N006 N008 N003 N005 N007 N009 NC_02 NC_03 NC_04 NC_05 IN IN IN IN LTC3644-2 ;pnba Mode)INTVcc)SVin)Run1)Run2)Run3)Run4)GND))Phase)SW1)FB1)SW2)FB2)SW3)FB3)SW4)FB4)Pgood1)Pgood2)Pgood4)Pgood3)Vin1)Vin2)Vin4)Vin3
.tran 1.2m startup

* LTspice schematic (.asc)
Version 4
SHEET 1 1168 1120
WIRE -200 -560 -280 -560
WIRE -88 -560 -200 -560
WIRE 152 -560 -88 -560
WIRE -280 -544 -280 -560
WIRE 40 -528 40 -544
WIRE -280 -448 -280 -464
WIRE -88 -448 -88 -560
WIRE 40 -448 40 -464
WIRE -200 -384 -200 -560
WIRE -168 -384 -200 -384
WIRE 152 -384 152 -560
WIRE 152 -384 120 -384
WIRE -200 -288 -200 -384
WIRE -168 -288 -200 -288
WIRE 152 -288 152 -384
WIRE 152 -288 120 -288
WIRE -488 -192 -568 -192
WIRE -408 -192 -488 -192
WIRE -328 -192 -408 -192
WIRE -168 -192 -248 -192
WIRE 184 -192 120 -192
WIRE 360 -192 264 -192
WIRE 504 -192 360 -192
WIRE 584 -192 504 -192
WIRE -568 -176 -568 -192
WIRE 584 -176 584 -192
WIRE -488 -160 -488 -192
WIRE 504 -160 504 -192
WIRE -408 -96 -408 -128
WIRE -168 -96 -408 -96
WIRE 360 -96 360 -128
WIRE 360 -96 120 -96
WIRE -568 -64 -568 -96
WIRE -488 -64 -488 -96
WIRE -408 -64 -408 -96
WIRE 360 -64 360 -96
WIRE 504 -64 504 -96
WIRE 584 -64 584 -96
WIRE -408 32 -408 16
WIRE 360 32 360 16
WIRE -200 96 -200 -288
WIRE -168 96 -200 96
WIRE 152 96 152 -288
WIRE 152 96 120 96
WIRE -200 192 -200 96
WIRE -168 192 -200 192
WIRE 152 192 152 96
WIRE 152 192 120 192
WIRE -488 288 -568 288
WIRE -408 288 -488 288
WIRE -328 288 -408 288
WIRE -168 288 -248 288
WIRE 184 288 120 288
WIRE 360 288 264 288
WIRE 504 288 360 288
WIRE 584 288 504 288
WIRE -568 304 -568 288
WIRE 584 304 584 288
WIRE -488 320 -488 288
WIRE 504 320 504 288
WIRE -408 384 -408 352
WIRE -168 384 -408 384
WIRE 360 384 360 352
WIRE 360 384 120 384
WIRE -568 416 -568 384
WIRE -488 416 -488 384
WIRE -408 416 -408 384
WIRE 360 416 360 384
WIRE 504 416 504 384
WIRE 584 416 584 384
WIRE -408 512 -408 496
WIRE 360 512 360 496
WIRE -120 560 -120 544
WIRE -24 560 -24 544
WIRE 72 560 72 544
FLAG -280 -448 0
FLAG 40 -544 0
FLAG -24 560 0
FLAG -120 560 0
FLAG -568 -64 0
FLAG -488 -64 0
FLAG -408 32 0
FLAG -568 416 0
FLAG -488 416 0
FLAG -408 512 0
FLAG 584 -64 0
FLAG 504 -64 0
FLAG 360 32 0
FLAG 584 416 0
FLAG 504 416 0
FLAG 360 512 0
FLAG 72 560 0
FLAG -280 -560 IN
FLAG -568 -192 OUT1
FLAG -568 288 OUT2
FLAG 584 288 OUT4
FLAG 584 -192 OUT3
SYMBOL voltage -280 -560 R0
SYMATTR InstName V1
SYMATTR Value 12
SYMBOL cap 24 -464 M180
SYMATTR InstName C1
SYMATTR Value 4.7
SYMBOL ind -232 -176 M270
SYMATTR InstName L1
SYMATTR Value 1
SYMBOL cap -504 -160 R0
SYMATTR InstName C2
SYMATTR Value 47
SYMBOL res -584 -192 R0
SYMATTR InstName R1
SYMATTR Value 2
SYMBOL cap -424 -192 R0
SYMATTR InstName C3
SYMATTR Value2 Rpar=619K
SYMATTR Value 22p
SYMBOL res -424 -80 R0
SYMATTR InstName R2
SYMATTR Value 196K
SYMBOL ind -232 304 M270
SYMATTR InstName L2
SYMATTR Value 2.2
SYMBOL cap -504 320 R0
SYMATTR InstName C4
SYMATTR Value 47
SYMBOL res -584 288 R0
SYMATTR InstName R3
SYMATTR Value 2.7
SYMBOL cap -424 288 R0
SYMATTR InstName C5
SYMATTR Value2 Rpar=619K
SYMATTR Value 22p
SYMBOL res -424 400 R0
SYMATTR InstName R4
SYMATTR Value 137K
SYMBOL ind 168 -176 R270
SYMATTR InstName L3
SYMATTR Value 1
SYMBOL cap 488 -160 R0
SYMATTR InstName C6
SYMATTR Value 47
SYMBOL res 568 -192 R0
SYMATTR InstName R5
SYMATTR Value 1.4
SYMBOL cap 344 -192 R0
SYMATTR InstName C7
SYMATTR Value2 Rpar=619K
SYMATTR Value 10p
SYMBOL res 344 -80 R0
SYMATTR InstName R6
SYMATTR Value 309K
SYMBOL ind 168 304 R270
SYMATTR InstName L4
SYMATTR Value 3.3
SYMBOL cap 488 320 R0
SYMATTR InstName C8
SYMATTR Value 47
SYMBOL res 568 288 R0
SYMATTR InstName R7
SYMATTR Value 4
SYMBOL cap 344 288 R0
SYMATTR InstName C9
SYMATTR Value2 Rpar=619K
SYMATTR Value 22p
SYMBOL res 344 400 R0
SYMATTR InstName R8
SYMATTR Value 84.5K
SYMBOL LTC3644-2 -24 -288 R0
SYMATTR InstName U1