* SPICE netlist
V1 IN 0 12
C2 OUT0 0 330 m=2 Rser=5m
C3 0 N001 220p
C4 0 N003 4700p
C5 0 N002 220p
C6 0 N004 2200p
R1 N007 N008 10K
R2 N005 N008 10K
R3 N006 N008 4.99K
C8 OUT0 0 100 m=3 Rser=5m
Rload1 OUT0 0 .055
Rload2 OUT1 0 .055
C1 OUT1 0 330 m=2 Rser=5m
C7 OUT1 0 100 m=3 Rser=5m
XU1 OUT1 0 0 NC_01 N004 N002 NC_02 OUT1 IN IN N006 0 NC_03 IN NC_04 NC_05 N007 N005 NC_06 NC_07 NC_08 NC_09 NC_10 NC_11 NC_12 OUT0 OUT0 N008 N001 N003 0 LTM4680 VIN_ON=5.5 VIN_OFF=5 Vout_0=1 Vout_1=1 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)PGND)EXTVcc)SVIN)INTVcc)SW1)RUN0)RUN1)PGOOD1)VTRIM0_CFG)VOUT0_CFG)VOUT1_CFG)VTRIM1_CFG)FSWPH_CFG)VDD25)VSENSE1+)VOUT1)VDD33)COMP1b)COMP1a)VSENSE1-
.tran 1.8m startup

* LTspice schematic (.asc)
Version 4
SHEET 1 1280 1248
WIRE -288 -624 -384 -624
WIRE -240 -624 -288 -624
WIRE -128 -624 -240 -624
WIRE 368 -624 -128 -624
WIRE -384 -608 -384 -624
WIRE -128 -576 -128 -624
WIRE 64 -576 64 -592
WIRE 160 -576 160 -592
WIRE -384 -512 -384 -528
WIRE -240 -512 -240 -624
WIRE -192 -512 -240 -512
WIRE 368 -512 368 -624
WIRE 368 -512 320 -512
WIRE -560 -320 -624 -320
WIRE -496 -320 -560 -320
WIRE -368 -320 -496 -320
WIRE -240 -320 -368 -320
WIRE -192 -320 -240 -320
WIRE 368 -320 320 -320
WIRE 416 -320 368 -320
WIRE 528 -320 416 -320
WIRE 592 -320 528 -320
WIRE 640 -320 592 -320
WIRE -624 -304 -624 -320
WIRE -496 -304 -496 -320
WIRE -368 -304 -368 -320
WIRE 416 -304 416 -320
WIRE 528 -304 528 -320
WIRE 640 -304 640 -320
WIRE -240 -224 -240 -320
WIRE -192 -224 -240 -224
WIRE 368 -224 368 -320
WIRE 368 -224 320 -224
WIRE -624 -208 -624 -224
WIRE -496 -208 -496 -240
WIRE -368 -208 -368 -240
WIRE 416 -208 416 -240
WIRE 528 -208 528 -240
WIRE 640 -208 640 -224
WIRE -192 -128 -224 -128
WIRE 352 -128 320 -128
WIRE -288 -32 -320 -32
WIRE -192 -32 -224 -32
WIRE 352 -32 320 -32
WIRE 448 -32 416 -32
WIRE -288 64 -320 64
WIRE -192 64 -224 64
WIRE 352 64 320 64
WIRE 448 64 416 64
WIRE -128 528 -128 512
WIRE 160 528 160 512
WIRE 256 528 256 512
WIRE -128 624 -128 608
WIRE 64 624 64 512
WIRE 64 624 -128 624
WIRE 160 624 160 608
WIRE 160 624 64 624
WIRE 256 624 256 608
WIRE 256 624 160 624
FLAG 64 -592 0
FLAG 416 -208 0
FLAG 640 -208 0
FLAG 592 -320 OUT1
FLAG -288 -624 IN
FLAG -384 -512 0
FLAG -368 -208 0
FLAG -624 -208 0
FLAG -560 -320 OUT0
FLAG -224 -128 0
FLAG 352 -128 0
FLAG -320 -32 0
FLAG -320 64 0
FLAG 448 -32 0
FLAG 448 64 0
FLAG 528 -208 0
FLAG -496 -208 0
FLAG 160 -592 0
SYMBOL voltage -384 -624 R0
SYMATTR InstName V1
SYMATTR Value 12
SYMBOL cap -384 -304 R0
SYMATTR Value2 m=2
SYMATTR Value 330
SYMATTR InstName C2
SYMATTR SpiceLine Rser=5m
SYMBOL cap -288 -48 M90
SYMATTR InstName C3
SYMATTR Value 220p
SYMBOL cap -288 48 M90
SYMATTR InstName C4
SYMATTR Value 4700p
SYMBOL cap 416 -48 R90
SYMATTR InstName C5
SYMATTR Value 220p
SYMBOL cap 416 48 R90
SYMATTR InstName C6
SYMATTR Value 2200p
SYMBOL res 240 512 R0
SYMATTR InstName R1
SYMATTR Value 10K
SYMBOL res -144 512 R0
SYMATTR InstName R2
SYMATTR Value 10K
SYMBOL res 144 512 R0
SYMATTR Value 4.99K
SYMATTR InstName R3
SYMBOL cap -512 -304 R0
SYMATTR Value2 m=3
SYMATTR Value 100
SYMATTR InstName C8
SYMATTR SpiceLine Rser=5m
SYMBOL res -640 -320 R0
SYMATTR InstName Rload1
SYMATTR Value .055
SYMBOL res 624 -320 R0
SYMATTR InstName Rload2
SYMATTR Value .055
SYMBOL cap 400 -304 R0
SYMATTR Value2 m=2
SYMATTR Value 330
SYMATTR InstName C1
SYMATTR SpiceLine Rser=5m
SYMBOL cap 512 -304 R0
SYMATTR Value2 m=3
SYMATTR Value 100
SYMATTR InstName C7
SYMATTR SpiceLine Rser=5m
SYMBOL LTM4680 64 -32 R0
SYMATTR InstName U1
SYMATTR SpiceLine VIN_ON=5.5 VIN_OFF=5 Vout_0=1 Vout_1=1 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