* SPICE netlist
V1 IN 0 12
C5 OUT0 0 330 x2 Rser=5m
R2 OUT0 0 0.1
C9 OUT1 0 330 X2 Rser=5m
R12 OUT1 0 0.1
C12 0 N001 220p
C13 0 N003 4700p
C14 0 N002 220p
C15 0 N004 2200p
R14 N007 N008 10K
R15 N005 N008 10K
R16 N006 N008 4.99K
C1 OUT0 0 100 x3 Rser=5m
C2 OUT1 0 100 X3 Rser=5m
XU1 OUT0 0 0 NC_01 N004 N002 NC_02 OUT0 IN IN N006 0 0 IN NC_03 OUT1 N007 N005 NC_04 NC_05 NC_06 NC_07 NC_08 NC_09 NC_10 NC_11 OUT1 N008 N001 N003 0 LTM4678A VIN_ON=5.5 VIN_OFF=5 Vout_0=1.6 Vout_1=2.5 Ilim0_range=1 Ilim1_range=1 OC_limit0=1 OC_limit1=1 Mode_ll=1 Fault_response=0 Retry_delay=.1m gm0=3m gm1=3m Rth0=5K Rth1=5K Sync=0 Freq=500K PHs_0=0 PHs_1=180 Ton0_delay=.3m Ton0_rise=.5m Ton1_delay=.3m Ton1_rise=.5m Toff0_delay=.2m Toff0_fall=.3m Toff1_delay=.2m Toff1_fall=.3m Vout0_range=0 Vout1_range=0 ;pnba Vsense0+)Vsense0-)SGND)PGood0)Comp0a)Comp0b)SW0)Vout0)Vin0)Vin1)SYNC)GND)ExtVcc)SVin)IntVcc)Vout1)Run0)Run1)SW1)Vtrim0_cfg)Vout0_cfg)Vout1_cfg)Vtrim1_cfg)Fswph_cfg)VDD25)PGood1)Vsense1+)VDD33)Comp1b)Comp1a)Vsense1-
.tran 1.8m startup

* LTspice schematic (.asc)
Version 4
SHEET 1 1264 1248
WIRE -248 -624 -392 -624
WIRE -136 -624 -248 -624
WIRE 360 -624 -136 -624
WIRE -392 -608 -392 -624
WIRE -136 -576 -136 -624
WIRE 56 -576 56 -592
WIRE 152 -576 152 -592
WIRE 248 -576 248 -592
WIRE -392 -512 -392 -528
WIRE -248 -512 -248 -624
WIRE -200 -512 -248 -512
WIRE 360 -512 360 -624
WIRE 360 -512 312 -512
WIRE -504 -320 -616 -320
WIRE -376 -320 -504 -320
WIRE -248 -320 -376 -320
WIRE -200 -320 -248 -320
WIRE 360 -320 312 -320
WIRE 408 -320 360 -320
WIRE 520 -320 408 -320
WIRE 632 -320 520 -320
WIRE -616 -304 -616 -320
WIRE -504 -304 -504 -320
WIRE -376 -304 -376 -320
WIRE 408 -304 408 -320
WIRE 520 -304 520 -320
WIRE 632 -304 632 -320
WIRE -248 -224 -248 -320
WIRE -200 -224 -248 -224
WIRE 360 -224 360 -320
WIRE 360 -224 312 -224
WIRE -616 -208 -616 -224
WIRE -504 -208 -504 -240
WIRE -376 -208 -376 -240
WIRE 408 -208 408 -240
WIRE 520 -208 520 -240
WIRE 632 -208 632 -224
WIRE -200 -128 -232 -128
WIRE 344 -128 312 -128
WIRE -296 -32 -328 -32
WIRE -200 -32 -232 -32
WIRE 344 -32 312 -32
WIRE 440 -32 408 -32
WIRE -296 64 -328 64
WIRE -200 64 -232 64
WIRE 344 64 312 64
WIRE 440 64 408 64
WIRE -136 528 -136 512
WIRE 152 528 152 512
WIRE 248 528 248 512
WIRE -136 624 -136 608
WIRE 56 624 56 512
WIRE 56 624 -136 624
WIRE 152 624 152 608
WIRE 152 624 56 624
WIRE 248 624 248 608
WIRE 248 624 152 624
FLAG 56 -592 0
FLAG 152 -592 0
FLAG 408 -208 0
FLAG 632 -208 0
FLAG 632 -320 OUT0
FLAG -392 -624 IN
FLAG -392 -512 0
FLAG -376 -208 0
FLAG -616 -208 0
FLAG -616 -320 OUT1
FLAG 248 -592 0
FLAG -232 -128 0
FLAG 344 -128 0
FLAG -328 -32 0
FLAG -328 64 0
FLAG 440 -32 0
FLAG 440 64 0
FLAG 520 -208 0
FLAG -504 -208 0
SYMBOL voltage -392 -624 R0
SYMATTR InstName V1
SYMATTR Value 12
SYMBOL cap 392 -304 R0
SYMATTR Value2 x2
SYMATTR Value 330
SYMATTR InstName C5
SYMATTR SpiceLine Rser=5m
SYMBOL res 616 -320 R0
SYMATTR InstName R2
SYMATTR Value 0.1
SYMBOL cap -392 -304 R0
SYMATTR Value2 X2
SYMATTR Value 330
SYMATTR InstName C9
SYMATTR SpiceLine Rser=5m
SYMBOL res -632 -320 R0
SYMATTR InstName R12
SYMATTR Value 0.1
SYMBOL cap -296 -48 M90
SYMATTR InstName C12
SYMATTR Value 220p
SYMBOL cap -296 48 M90
SYMATTR InstName C13
SYMATTR Value 4700p
SYMBOL cap 408 -48 R90
SYMATTR InstName C14
SYMATTR Value 220p
SYMBOL cap 408 48 R90
SYMATTR InstName C15
SYMATTR Value 2200p
SYMBOL res 232 512 R0
SYMATTR InstName R14
SYMATTR Value 10K
SYMBOL res -152 512 R0
SYMATTR InstName R15
SYMATTR Value 10K
SYMBOL res 136 512 R0
SYMATTR InstName R16
SYMATTR Value 4.99K
SYMBOL cap 504 -304 R0
SYMATTR Value2 x3
SYMATTR Value 100
SYMATTR InstName C1
SYMATTR SpiceLine Rser=5m
SYMBOL cap -520 -304 R0
SYMATTR Value2 X3
SYMATTR Value 100
SYMATTR InstName C2
SYMATTR SpiceLine Rser=5m
SYMBOL LTM4678A 56 -32 R0
SYMATTR InstName U1
SYMATTR SpiceLine VIN_ON=5.5 VIN_OFF=5 Vout_0=1.6 Vout_1=2.5 Ilim0_range=1 Ilim1_range=1 OC_limit0=1 OC_limit1=1 Mode_ll=1 Fault_response=0 Retry_delay=.1m gm0=3m gm1=3m Rth0=5K Rth1=5K Sync=0