* SPICE netlist
C1 N007 0 500p
C2 N009 0 .1 Rser=3.32K
V1 IN 0 5
MQ1 IN N002 N004 N004 HAT2168H
MQ2 N004 N006 0 0 HAT2168H
L1 N004 OUT 1.22
C3 N003 N004 .22
D1 IN N003 CMDSH2-3
C4 OUT 0 500
C5 N011 0 680p Rser=20K
R1 N014 N013 15K
R2 N013 0 10K
XU1 N007 N011 N013 IN 0 MP_01 0 N014 OUT NC_02 N009 MP_03 N008 N010 N012 N012 IN 0 0 N015 IN N006 0 0 N004 N004 N002 N003 N005 N001 IN NC_04 LTC3709 ;pnba RUN/SS)Ith)FB)Track)SGND))Vos-)DiffOut)Vos+)ExtLPF)IntLPF))Boost2)TG2)SW2)Sense2+)Vcc)Sense2-)PGND2)BG2)DRVcc)BG1)PGND1)Sense1-)Sense1+)SW1)TG1)Boost1)Pgood)Ion)FCB)Vrng
MQ3 IN N010 N012 N012 HAT2168H
MQ4 N012 N015 0 0 HAT2168H
L2 N012 OUT 1.22
C6 N008 N012 .22
D2 IN N008 CMDSH2-3
R3 IN N001 324K
R4 IN N005 100K
Rload OUT 0 .05
.tran 1m startup

* LTspice schematic (.asc)
Version 4
SHEET 1 1296 1520
WIRE -520 -760 -616 -760
WIRE -264 -760 -520 -760
WIRE -136 -760 -264 -760
WIRE 56 -760 -136 -760
WIRE 184 -760 56 -760
WIRE 344 -760 184 -760
WIRE -616 -744 -616 -760
WIRE -520 -744 -520 -760
WIRE 56 -744 56 -760
WIRE -616 -648 -616 -664
WIRE -264 -648 -264 -760
WIRE -264 -648 -472 -648
WIRE 184 -648 184 -760
WIRE -264 -632 -264 -648
WIRE -136 -632 -136 -760
WIRE -520 -568 -520 -664
WIRE -424 -568 -520 -568
WIRE 136 -568 24 -568
WIRE -472 -472 -472 -648
WIRE -424 -472 -472 -472
WIRE 56 -472 56 -680
WIRE 56 -472 24 -472
WIRE 56 -456 56 -472
WIRE -472 -376 -472 -472
WIRE -424 -376 -472 -376
WIRE 56 -376 56 -392
WIRE 56 -376 24 -376
WIRE 184 -376 184 -552
WIRE 184 -376 56 -376
WIRE 376 -376 184 -376
WIRE 488 -376 456 -376
WIRE -472 -360 -472 -376
WIRE -424 -280 -472 -280
WIRE 184 -280 184 -376
WIRE 184 -280 24 -280
WIRE 184 -264 184 -280
WIRE 136 -184 24 -184
WIRE -504 -104 -520 -104
WIRE -424 -104 -440 -104
WIRE 184 -88 184 -168
WIRE 184 -88 24 -88
WIRE 248 -40 216 -40
WIRE 344 -40 344 -760
WIRE 344 -40 312 -40
WIRE 184 8 184 -88
WIRE 184 8 24 8
WIRE 184 24 184 8
WIRE 344 24 344 -40
WIRE -632 88 -648 88
WIRE -424 88 -568 88
WIRE 296 104 24 104
WIRE -536 184 -552 184
WIRE -424 184 -472 184
WIRE 216 200 216 -40
WIRE 216 200 24 200
WIRE 216 216 216 200
WIRE -424 280 -456 280
WIRE 216 296 216 280
WIRE 216 296 24 296
WIRE 344 296 344 120
WIRE 344 296 216 296
WIRE 376 296 344 296
WIRE 488 296 488 -376
WIRE 488 296 456 296
WIRE 536 296 488 296
WIRE 648 296 536 296
WIRE 536 312 536 296
WIRE 648 312 648 296
WIRE -600 376 -616 376
WIRE -504 376 -520 376
WIRE -424 376 -504 376
WIRE -504 392 -504 376
WIRE 344 392 344 296
WIRE 344 392 24 392
WIRE 344 408 344 392
WIRE 536 408 536 376
WIRE 648 408 648 392
WIRE -504 488 -504 472
WIRE -424 488 -504 488
WIRE 296 488 24 488
WIRE -424 584 -456 584
WIRE 344 584 344 504
WIRE 344 584 24 584
WIRE -424 680 -456 680
WIRE 344 680 344 584
WIRE 344 680 24 680
WIRE 344 696 344 680
WIRE -456 760 -456 680
WIRE 488 760 488 296
WIRE 488 760 -456 760
FLAG -520 -104 0
FLAG -648 88 0
FLAG -616 -648 0
FLAG 184 24 0
FLAG 536 408 0
FLAG 648 408 0
FLAG -552 184 0
FLAG -616 -760 IN
FLAG 648 296 OUT
FLAG -616 376 0
FLAG 344 696 0
FLAG -456 584 0
FLAG -456 280 0
SYMBOL cap -440 -120 R90
SYMATTR InstName C1
SYMATTR Value 500p
SYMBOL cap -568 72 R90
SYMATTR InstName C2
SYMATTR Value .1
SYMATTR SpiceLine Rser=3.32K
SYMBOL voltage -616 -760 R0
SYMATTR InstName V1
SYMATTR Value 5
SYMBOL nmos 136 -648 R0
SYMATTR Value HAT2168H
SYMATTR InstName Q1
SYMBOL nmos 136 -264 R0
SYMATTR Value HAT2168H
SYMATTR InstName Q2
SYMBOL ind 360 -360 R270
SYMATTR InstName L1
SYMATTR Value 1.22
SYMBOL cap 40 -456 R0
SYMATTR InstName C3
SYMATTR Value .22
SYMBOL schottky 40 -744 R0
SYMATTR Value CMDSH2-3
SYMATTR InstName D1
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL cap 520 312 R0
SYMATTR Value 500
SYMATTR InstName C4
SYMBOL cap -472 168 R90
SYMATTR InstName C5
SYMATTR Value 680p
SYMATTR SpiceLine Rser=20K
SYMBOL res -520 488 M180
SYMATTR InstName R1
SYMATTR Value 15K
SYMBOL res -504 392 M270
SYMATTR InstName R2
SYMATTR Value 10K
SYMBOL LTC3709 -200 56 R0
SYMATTR InstName U1
SYMBOL nmos 296 24 R0
SYMATTR InstName Q3
SYMATTR Value HAT2168H
SYMBOL nmos 296 408 R0
SYMATTR InstName Q4
SYMATTR Value HAT2168H
SYMBOL ind 360 312 R270
SYMATTR InstName L2
SYMATTR Value 1.22
SYMBOL cap 200 216 R0
SYMATTR InstName C6
SYMATTR Value .22
SYMBOL schottky 312 -56 R90
SYMATTR Value CMDSH2-3
SYMATTR InstName D2
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL res -536 -760 R0
SYMATTR InstName R3
SYMATTR Value 324K
SYMBOL res -456 -376 M0
SYMATTR InstName R4
SYMATTR Value 100K
SYMBOL res 632 296 R0
SYMATTR InstName Rload
SYMATTR Value .05