* SPICE netlist
L1 N002 OUT1 1.5 Rser=10.5m
R11 OUT1 N003 1Meg
R12 N003 0 191K
C11 OUT1 N003 2.2p
C12 OUT1 0 47
C13 N001 N002 0.1
V1 VIN_HV 0 24
L2 N007 OUT2 1.2 Rser=9.4m
R2 OUT2 N009 1.07Meg
R3 N009 0 340K
C5 OUT2 0 47
Rload2 OUT2 0 1.32
C6 N004 N007 0.1
L3 N013 OUT3 0.4 Rser=2.8m
R5 OUT3 N015 1Meg
R6 N015 0 634K
C8 OUT3 0 47 X2
Rload3 OUT3 0 453m
C9 N011 N013 0.1
L4 N018 OUT4 0.3 Rser=2.5m
R7 OUT4 N020 665K
R8 N020 0 931K
C10 OUT4 N020 3.9p
C14 OUT4 0 100
Rload4 OUT4 0 301m
C15 N016 N018 0.1
R1 N017 0 22.6K
C3 N005 0 4.7
C16 N021 0 10n
C18 N014 0 0.1
Rload1 OUT1 0 2
R9 N006 N005 100K
R10 N008 N005 100K
R13 N010 N005 100K
R14 N012 N005 100K
C17 N022 0 10n
C23 VIN_LV 0 2.2
R4 N019 0 26.1K
C1 OUT2 N009 2.2p
C2 OUT3 N015 4.7p
V2 VIN_LV 0 5
XU2 N002 N001 N006 N021 VIN_HV N003 VIN_HV N009 VIN_HV VIN_HV N021 N019 N017 N022 VIN_LV VIN_LV N015 VIN_LV N020 VIN_LV N022 N012 N016 N018 N013 N011 N010 N005 N014 N008 N004 N007 0 LT8685S ;pnba SW1)BST1)PG1)TRK/SS1)EN/UVLO)FB1)EN2)FB2)VIN1)VIN2)TRK/SS2)SYNC/MODE)RT)TRK/SS3)VIN3)VIN4)FB3)EN3)FB4)EN4)TRK/SS4)PG4)BST4)SW4)SW3)BST3)PG3)INTVCC)BIAS)PG2)BST2)SW2)GND
.tran 2.5m startup

* LTspice schematic (.asc)
Version 4
SHEET 1 1296 1360
WIRE -600 -680 -648 -680
WIRE -424 -680 -600 -680
WIRE -72 -680 -424 -680
WIRE 24 -680 -72 -680
WIRE -488 -648 -536 -648
WIRE -408 -648 -488 -648
WIRE -296 -648 -408 -648
WIRE -184 -648 -296 -648
WIRE -648 -632 -648 -680
WIRE -536 -632 -536 -648
WIRE -296 -616 -296 -648
WIRE -184 -616 -184 -648
WIRE -72 -616 -72 -680
WIRE 24 -616 24 -680
WIRE -408 -552 -408 -648
WIRE -392 -552 -408 -552
WIRE 152 -552 120 -552
WIRE -648 -536 -648 -552
WIRE -536 -536 -536 -552
WIRE 152 -536 152 -552
WIRE -408 -456 -408 -552
WIRE -392 -456 -408 -456
WIRE 152 -456 152 -472
WIRE 152 -456 120 -456
WIRE 200 -456 152 -456
WIRE 328 -456 280 -456
WIRE 408 -456 328 -456
WIRE 552 -456 408 -456
WIRE 648 -456 552 -456
WIRE 328 -440 328 -456
WIRE 552 -440 552 -456
WIRE 648 -440 648 -456
WIRE -424 -360 -424 -680
WIRE -392 -360 -424 -360
WIRE 328 -360 328 -376
WIRE 328 -360 120 -360
WIRE 408 -360 408 -376
WIRE 408 -360 328 -360
WIRE 408 -344 408 -360
WIRE 552 -344 552 -376
WIRE 648 -344 648 -360
WIRE -504 -264 -520 -264
WIRE -424 -264 -424 -360
WIRE -424 -264 -440 -264
WIRE -392 -264 -424 -264
WIRE 152 -264 120 -264
WIRE 152 -248 152 -264
WIRE 408 -248 408 -264
WIRE -488 -168 -552 -168
WIRE -392 -168 -408 -168
WIRE 152 -168 152 -184
WIRE 152 -168 120 -168
WIRE 200 -168 152 -168
WIRE 328 -168 280 -168
WIRE 408 -168 328 -168
WIRE 552 -168 408 -168
WIRE 648 -168 552 -168
WIRE 328 -152 328 -168
WIRE 552 -152 552 -168
WIRE 648 -152 648 -168
WIRE -552 -72 -552 -168
WIRE -488 -72 -552 -72
WIRE -392 -72 -408 -72
WIRE 328 -72 328 -88
WIRE 328 -72 120 -72
WIRE 408 -72 408 -88
WIRE 408 -72 328 -72
WIRE 408 -56 408 -72
WIRE 552 -56 552 -88
WIRE 648 -56 648 -72
WIRE -552 24 -552 -72
WIRE -488 24 -552 24
WIRE -392 24 -408 24
WIRE 152 24 120 24
WIRE 152 40 152 24
WIRE 408 40 408 24
WIRE -552 120 -552 24
WIRE -488 120 -552 120
WIRE -392 120 -408 120
WIRE 152 120 152 104
WIRE 152 120 120 120
WIRE 200 120 152 120
WIRE 328 120 280 120
WIRE 408 120 328 120
WIRE 552 120 408 120
WIRE 648 120 552 120
WIRE 328 136 328 120
WIRE 552 136 552 120
WIRE 648 136 648 120
WIRE -472 216 -488 216
WIRE -392 216 -408 216
WIRE 328 216 328 200
WIRE 328 216 120 216
WIRE 408 216 408 200
WIRE 408 216 328 216
WIRE 408 232 408 216
WIRE 552 232 552 200
WIRE 648 232 648 216
WIRE -552 312 -552 120
WIRE -392 312 -552 312
WIRE 152 312 120 312
WIRE -552 328 -552 312
WIRE 152 328 152 312
WIRE 408 328 408 312
WIRE -552 408 -552 392
WIRE -488 408 -552 408
WIRE -392 408 -408 408
WIRE 152 408 152 392
WIRE 152 408 120 408
WIRE 200 408 152 408
WIRE 328 408 280 408
WIRE 408 408 328 408
WIRE 552 408 408 408
WIRE 648 408 552 408
WIRE 328 424 328 408
WIRE 552 424 552 408
WIRE 648 424 648 408
WIRE -552 504 -552 408
WIRE -488 504 -552 504
WIRE -392 504 -408 504
WIRE 328 504 328 488
WIRE 328 504 120 504
WIRE 408 504 408 488
WIRE 408 504 328 504
WIRE 408 520 408 504
WIRE 552 520 552 488
WIRE 648 520 648 504
WIRE -552 536 -552 504
WIRE -328 584 -328 568
WIRE -232 584 -232 568
WIRE -232 584 -328 584
WIRE -136 584 -136 568
WIRE -40 584 -40 568
WIRE -40 584 -136 584
WIRE 56 584 56 568
WIRE -328 600 -328 584
WIRE -136 600 -136 584
WIRE 408 616 408 600
WIRE -328 680 -328 664
WIRE -136 680 -136 664
FLAG 56 584 0
FLAG 552 -456 OUT1
FLAG -536 -536 0
FLAG -488 -648 VIN_HV
FLAG 408 -248 0
FLAG 552 -344 0
FLAG 648 -56 0
FLAG 552 -168 OUT2
FLAG 408 40 0
FLAG 552 -56 0
FLAG 552 120 OUT3
FLAG 408 328 0
FLAG 552 232 0
FLAG 648 520 0
FLAG 552 408 OUT4
FLAG 408 616 0
FLAG 552 520 0
FLAG -552 536 0
FLAG -328 680 0
FLAG -136 680 0
FLAG -488 216 0
FLAG 648 232 0
FLAG 648 -344 0
FLAG -520 -264 0
FLAG -648 -536 0
FLAG -600 -680 VIN_LV
SYMBOL ind 184 -440 R270
SYMATTR InstName L1
SYMATTR Value 1.5
SYMATTR SpiceLine Rser=10.5m
SYMBOL res 392 -472 R0
SYMATTR InstName R11
SYMATTR Value 1Meg
SYMBOL res 392 -360 R0
SYMATTR InstName R12
SYMATTR Value 191K
SYMBOL cap 312 -440 R0
SYMATTR InstName C11
SYMATTR Value 2.2p
SYMBOL cap 536 -440 R0
SYMATTR InstName C12
SYMATTR Value 47
SYMBOL cap 136 -536 R0
SYMATTR InstName C13
SYMATTR Value 0.1
SYMBOL voltage -536 -648 R0
SYMATTR Value 24
SYMATTR InstName V1
SYMBOL ind 184 -152 R270
SYMATTR InstName L2
SYMATTR Value 1.2
SYMATTR SpiceLine Rser=9.4m
SYMBOL res 392 -184 R0
SYMATTR InstName R2
SYMATTR Value 1.07Meg
SYMBOL res 392 -72 R0
SYMATTR InstName R3
SYMATTR Value 340K
SYMBOL cap 536 -152 R0
SYMATTR InstName C5
SYMATTR Value 47
SYMBOL res 632 -168 R0
SYMATTR InstName Rload2
SYMATTR Value 1.32
SYMBOL cap 136 -248 R0
SYMATTR InstName C6
SYMATTR Value 0.1
SYMBOL ind 184 136 R270
SYMATTR InstName L3
SYMATTR Value 0.4
SYMATTR SpiceLine Rser=2.8m
SYMBOL res 392 104 R0
SYMATTR InstName R5
SYMATTR Value 1Meg
SYMBOL res 392 216 R0
SYMATTR InstName R6
SYMATTR Value 634K
SYMBOL cap 536 136 R0
SYMATTR InstName C8
SYMATTR Value 47
SYMATTR Value2 X2
SYMBOL res 632 120 R0
SYMATTR InstName Rload3
SYMATTR Value 453m
SYMBOL cap 136 40 R0
SYMATTR InstName C9
SYMATTR Value 0.1
SYMBOL ind 184 424 R270
SYMATTR InstName L4
SYMATTR Value 0.3
SYMATTR SpiceLine Rser=2.5m
SYMBOL res 392 392 R0
SYMATTR InstName R7
SYMATTR Value 665K
SYMBOL res 392 504 R0
SYMATTR InstName R8
SYMATTR Value 931K
SYMBOL cap 312 424 R0
SYMATTR InstName C10
SYMATTR Value 3.9p
SYMBOL cap 536 424 R0
SYMATTR InstName C14
SYMATTR Value 100
SYMBOL res 632 408 R0
SYMATTR InstName Rload4
SYMATTR Value 301m
SYMBOL cap 136 328 R0
SYMATTR InstName C15
SYMATTR Value 0.1
SYMBOL res -392 392 R90
SYMATTR InstName R1
SYMATTR Value 22.6K
SYMBOL cap -568 328 R0
SYMATTR InstName C3
SYMATTR Value 4.7
SYMBOL cap -344 600 R0
SYMATTR InstName C16
SYMATTR Value 10n
SYMBOL cap -408 200 R90
SYMATTR InstName C18
SYMATTR Value 0.1
SYMBOL res 632 -456 R0
SYMATTR InstName Rload1
SYMATTR Value 2
SYMBOL res -392 -184 R90
SYMATTR InstName R9
SYMATTR Value 100K
SYMBOL res -392 -88 R90
SYMATTR InstName R10
SYMATTR Value 100K
SYMBOL res -392 8 R90
SYMATTR InstName R13
SYMATTR Value 100K
SYMBOL res -392 104 R90
SYMATTR InstName R14
SYMATTR Value 100K
SYMBOL cap -152 600 R0
SYMATTR InstName C17
SYMATTR Value 10n
SYMBOL cap -440 -280 R90
SYMATTR InstName C23
SYMATTR Value 2.2
SYMBOL res -392 488 R90
SYMATTR InstName R4
SYMATTR Value 26.1K
SYMBOL cap 312 -152 R0
SYMATTR InstName C1
SYMATTR Value 2.2p
SYMBOL cap 312 136 R0
SYMATTR InstName C2
SYMATTR Value 4.7p
SYMBOL voltage -648 -648 R0
SYMATTR Value 5
SYMATTR InstName V2
SYMBOL LT8685S -136 -24 R0
SYMATTR InstName U2