* SPICE netlist
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 ;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
V1 IN 0 12
C1 N001 0 4.7
L1 N002 OUT1 3.3
C2 OUT1 0 47
C3 OUT1 N004 22p Rpar=619K
R1 N004 0 196K
L2 N006 OUT2 4.7
C4 OUT2 0 47
C5 OUT2 N008 22p Rpar=619K
R2 N008 0 137K
L3 N003 OUT3 3.3
C6 OUT3 0 47
C7 OUT3 N005 10p Rpar=619K
R3 N005 0 309K
L4 N007 OUT4 6.8
C8 OUT4 0 47
C9 OUT4 N009 22p Rpar=619K
R4 N009 0 84.5K
Rload1 OUT1 0 2
Rload2 OUT2 0 2.7
Rload3 OUT3 0 1.4
Rload4 OUT4 0 4
.tran 1.2m startup

* LTspice schematic (.asc)
Version 4
SHEET 1 1232 1136
WIRE -168 -568 -248 -568
WIRE -56 -568 -168 -568
WIRE 184 -568 -56 -568
WIRE -248 -552 -248 -568
WIRE 72 -520 72 -536
WIRE -248 -456 -248 -472
WIRE -56 -440 -56 -568
WIRE 72 -440 72 -456
WIRE -168 -376 -168 -568
WIRE -136 -376 -168 -376
WIRE 184 -376 184 -568
WIRE 184 -376 152 -376
WIRE -168 -280 -168 -376
WIRE -136 -280 -168 -280
WIRE 184 -280 184 -376
WIRE 184 -280 152 -280
WIRE -456 -184 -600 -184
WIRE -376 -184 -456 -184
WIRE -280 -184 -376 -184
WIRE -136 -184 -200 -184
WIRE 216 -184 152 -184
WIRE 328 -184 296 -184
WIRE 504 -184 328 -184
WIRE 600 -184 504 -184
WIRE -600 -168 -600 -184
WIRE -456 -168 -456 -184
WIRE 504 -168 504 -184
WIRE 600 -168 600 -184
WIRE -376 -88 -376 -120
WIRE -136 -88 -376 -88
WIRE 328 -88 328 -120
WIRE 328 -88 152 -88
WIRE -600 -72 -600 -88
WIRE -456 -72 -456 -104
WIRE -376 -72 -376 -88
WIRE 328 -72 328 -88
WIRE 504 -72 504 -104
WIRE 600 -72 600 -88
WIRE -376 24 -376 8
WIRE 328 24 328 8
WIRE -168 104 -168 -280
WIRE -136 104 -168 104
WIRE 184 104 184 -280
WIRE 184 104 152 104
WIRE -168 200 -168 104
WIRE -136 200 -168 200
WIRE 184 200 184 104
WIRE 184 200 152 200
WIRE -456 296 -600 296
WIRE -376 296 -456 296
WIRE -280 296 -376 296
WIRE -136 296 -200 296
WIRE 216 296 152 296
WIRE 344 296 296 296
WIRE 520 296 344 296
WIRE 616 296 520 296
WIRE -600 312 -600 296
WIRE -456 312 -456 296
WIRE 520 312 520 296
WIRE 616 312 616 296
WIRE -376 392 -376 360
WIRE -136 392 -376 392
WIRE 344 392 344 360
WIRE 344 392 152 392
WIRE -600 408 -600 392
WIRE -456 408 -456 376
WIRE -376 408 -376 392
WIRE 520 408 520 376
WIRE 616 408 616 392
WIRE 344 424 344 392
WIRE -376 504 -376 488
WIRE 344 520 344 504
WIRE -88 568 -88 552
WIRE 8 568 8 552
WIRE 104 568 104 552
FLAG -248 -456 0
FLAG 72 -536 0
FLAG 8 568 0
FLAG -88 568 0
FLAG -600 -72 0
FLAG -456 -72 0
FLAG -376 24 0
FLAG -600 408 0
FLAG -456 408 0
FLAG -376 504 0
FLAG 600 -72 0
FLAG 504 -72 0
FLAG 328 24 0
FLAG 616 408 0
FLAG 520 408 0
FLAG 344 520 0
FLAG 104 568 0
FLAG -248 -568 IN
FLAG -600 -184 OUT1
FLAG -600 296 OUT2
FLAG 616 296 OUT4
FLAG 600 -184 OUT3
SYMBOL PowerProducts\\LTC3644 8 -280 R0
SYMATTR InstName U1
SYMBOL voltage -248 -568 R0
SYMATTR InstName V1
SYMATTR Value 12
SYMBOL cap 56 -456 M180
SYMATTR InstName C1
SYMATTR Value 4.7
SYMBOL ind -184 -168 M270
SYMATTR InstName L1
SYMATTR Value 3.3
SYMBOL cap -472 -168 R0
SYMATTR InstName C2
SYMATTR Value 47
SYMBOL cap -392 -184 R0
SYMATTR InstName C3
SYMATTR Value2 Rpar=619K
SYMATTR Value 22p
SYMBOL res -392 -88 R0
SYMATTR InstName R1
SYMATTR Value 196K
SYMBOL ind -184 312 M270
SYMATTR InstName L2
SYMATTR Value 4.7
SYMBOL cap -472 312 R0
SYMATTR InstName C4
SYMATTR Value 47
SYMBOL cap -392 296 R0
SYMATTR InstName C5
SYMATTR Value2 Rpar=619K
SYMATTR Value 22p
SYMBOL res -392 392 R0
SYMATTR InstName R2
SYMATTR Value 137K
SYMBOL ind 200 -168 R270
SYMATTR InstName L3
SYMATTR Value 3.3
SYMBOL cap 488 -168 R0
SYMATTR InstName C6
SYMATTR Value 47
SYMBOL cap 312 -184 R0
SYMATTR InstName C7
SYMATTR Value2 Rpar=619K
SYMATTR Value 10p
SYMBOL res 312 -88 R0
SYMATTR InstName R3
SYMATTR Value 309K
SYMBOL ind 200 312 R270
SYMATTR InstName L4
SYMATTR Value 6.8
SYMBOL cap 504 312 R0
SYMATTR InstName C8
SYMATTR Value 47
SYMBOL cap 328 296 R0
SYMATTR InstName C9
SYMATTR Value2 Rpar=619K
SYMATTR Value 22p
SYMBOL res 328 408 R0
SYMATTR InstName R4
SYMATTR Value 84.5K
SYMBOL res -616 -184 R0
SYMATTR InstName Rload1
SYMATTR Value 2
SYMBOL res -616 296 R0
SYMATTR InstName Rload2
SYMATTR Value 2.7
SYMBOL res 584 -184 R0
SYMATTR InstName Rload3
SYMATTR Value 1.4
SYMBOL res 600 296 R0
SYMATTR InstName Rload4
SYMATTR Value 4