* SPICE netlist
V1 IN 0 12
R2 IN FLT# 13.7k
R3 FLT# 0 2k
Rsns1 OUT sense1 10m
R10 G2 N003 10
R8 OUT PG 10k
C3 stmr 0 2.2
C5 Vcc 0 1
M3 IN N003 sense2 sense2 PSMN1R025YLD
R5 N007 G1 10
R9 G2 N004 10
M1 IN N007 sense1 sense1 PSMN6R130YLD
Rsns2 OUT sense2 0.083m
M2 IN N004 sense2 sense2 PSMN1R025YLD
C4 cbtmr 0 47n
CL OUT 0 10m
R1 IN Vcc 1k
R4 IN N009 100k
C1 N008 0 33n
R7 G1 N008 1k
S1 0 N006 PG 0 SW_load
RL2 OUT N006 0.12
R12 G2 N001 10
M5 IN N001 sense2 sense2 PSMN1R025YLD
M4 IN N002 sense2 sense2 PSMN1R025YLD
R11 G2 N002 10
RL OUT 0 100
S2 0 OUT N005 0 SHORT
V2 N005 0 PULSE(0 1 300m 1m 1m 10m)
V3 iboost 0 0
XU2 OUT OUT sense2 sense1 G2 G1 N009 Vcc stmr FLT# cbtmr FLT# PG 0 iboost imon LT4239 ;pnba Out)OutK)Sense2)Sense1)Gate2)Gate1)Drain)Vcc)STMR)UV)CBTMR)FLT#)PG)GND)IBOOST)IMon
.tran 400m startup

* LTspice schematic (.asc)
Version 4
SHEET 1 2048 1328
WIRE -544 -664 -816 -664
WIRE -80 -664 -448 -664
WIRE -464 -584 -464 -616
WIRE -384 -584 -464 -584
WIRE -272 -584 -304 -584
WIRE -816 -520 -816 -664
WIRE -544 -520 -816 -520
WIRE -80 -520 -80 -664
WIRE -80 -520 -448 -520
WIRE -464 -440 -464 -472
WIRE -384 -440 -464 -440
WIRE -272 -440 -272 -584
WIRE -272 -440 -304 -440
WIRE -816 -360 -816 -520
WIRE -544 -360 -816 -360
WIRE -80 -360 -80 -520
WIRE -80 -360 -448 -360
WIRE -16 -360 -80 -360
WIRE 128 -360 64 -360
WIRE -464 -280 -464 -312
WIRE -384 -280 -464 -280
WIRE -272 -280 -272 -440
WIRE -272 -280 -304 -280
WIRE -816 -216 -816 -360
WIRE -544 -216 -816 -216
WIRE -80 -216 -80 -360
WIRE -80 -216 -448 -216
WIRE 128 -216 128 -360
WIRE 256 -216 128 -216
WIRE 336 -216 256 -216
WIRE 448 -216 336 -216
WIRE 672 -216 448 -216
WIRE 864 -216 672 -216
WIRE 672 -152 672 -216
WIRE -464 -136 -464 -168
WIRE -384 -136 -464 -136
WIRE -272 -136 -272 -280
WIRE -272 -136 -304 -136
WIRE 448 -136 448 -216
WIRE 336 -104 336 -216
WIRE -928 -72 -1024 -72
WIRE -896 -72 -928 -72
WIRE -816 -72 -816 -216
WIRE -816 -72 -896 -72
WIRE -608 -72 -816 -72
WIRE -544 -72 -608 -72
WIRE -176 -72 -448 -72
WIRE -16 -72 -176 -72
WIRE 128 -72 128 -216
WIRE 128 -72 64 -72
WIRE 864 -72 864 -216
WIRE 1024 -56 912 -56
WIRE 1024 -40 1024 -56
WIRE 672 -24 672 -72
WIRE -608 -8 -608 -72
WIRE -464 -8 -464 -24
WIRE 624 -8 592 -8
WIRE -672 8 -768 8
WIRE 336 8 336 -40
WIRE 448 8 448 -56
WIRE -1024 24 -1024 -72
WIRE -768 24 -768 8
WIRE 864 24 864 8
WIRE 624 40 592 40
WIRE 1024 56 1024 40
WIRE -672 88 -672 8
WIRE -464 88 -464 72
WIRE -464 88 -672 88
WIRE 128 88 128 -72
WIRE 128 88 48 88
WIRE -176 104 -176 -72
WIRE -80 104 -80 -216
WIRE 672 104 672 56
WIRE -928 120 -928 -72
WIRE -768 120 -768 104
WIRE -464 120 -464 88
WIRE -272 120 -272 -136
WIRE 256 120 256 -216
WIRE -1024 152 -1024 104
WIRE -608 152 -608 72
WIRE -464 152 -464 120
WIRE -272 152 -272 120
WIRE -176 152 -176 104
WIRE -80 152 -80 104
WIRE 48 152 48 88
WIRE 128 152 128 88
WIRE -768 216 -768 184
WIRE -928 248 -928 200
WIRE -720 248 -928 248
WIRE -672 248 -720 248
WIRE 256 248 256 200
WIRE 256 248 192 248
WIRE 320 248 256 248
WIRE -928 280 -928 248
WIRE -816 296 -816 -72
WIRE -672 328 -704 328
WIRE 272 328 192 328
WIRE 384 328 272 328
WIRE -928 360 -928 344
WIRE 384 360 384 328
WIRE -816 408 -816 376
WIRE -752 408 -816 408
WIRE -704 408 -704 328
WIRE -704 408 -752 408
WIRE -672 408 -704 408
WIRE 256 408 192 408
WIRE -816 440 -816 408
WIRE 384 472 384 440
WIRE -464 520 -464 472
WIRE -240 520 -240 472
WIRE -16 520 -16 472
WIRE -816 552 -816 520
WIRE -464 552 -464 520
WIRE -16 552 -16 520
WIRE -464 664 -464 616
WIRE -16 664 -16 616
FLAG -1024 152 0
FLAG -816 552 0
FLAG -464 664 0
FLAG -240 520 0
FLAG -928 360 0
FLAG -896 -72 IN
FLAG 320 248 PG
FLAG -16 664 0
FLAG 336 8 0
FLAG 336 -216 OUT
FLAG 256 408 imon
FLAG -752 408 FLT#
FLAG -272 120 G2
FLAG -464 120 G1
FLAG -80 104 sense2
FLAG -176 104 sense1
FLAG -464 520 stmr
FLAG -16 520 cbtmr
FLAG -768 216 0
FLAG 672 104 0
FLAG 592 -8 PG
FLAG 592 40 0
FLAG -720 248 Vcc
FLAG 448 8 0
FLAG 864 24 0
FLAG 912 -8 0
FLAG 1024 56 0
FLAG 384 472 0
FLAG 272 328 iboost
SYMBOL voltage -1024 8 M0
SYMATTR InstName V1
SYMATTR Value 12
SYMBOL res -832 280 R0
SYMATTR InstName R2
SYMATTR Value 13.7k
SYMBOL res -832 424 R0
SYMATTR InstName R3
SYMATTR Value 2k
SYMBOL res 80 -88 R90
SYMATTR InstName Rsns1
SYMATTR Value 10m
SYMBOL res -288 -296 R90
SYMATTR InstName R10
SYMATTR Value 10
SYMBOL res 240 104 R0
SYMATTR InstName R8
SYMATTR Value 10k
SYMBOL cap -480 552 R0
SYMATTR InstName C3
SYMATTR Value 2.2
SYMBOL cap -944 280 R0
SYMATTR InstName C5
SYMATTR Value 1
SYMBOL nmos -544 -312 R270
SYMATTR InstName M3
SYMATTR Value PSMN1R025YLD
SYMBOL res -480 -24 R0
SYMATTR InstName R5
SYMATTR Value 10
SYMBOL res -288 -152 R90
SYMATTR InstName R9
SYMATTR Value 10
SYMBOL nmos -544 -24 R270
SYMATTR InstName M1
SYMATTR Value PSMN6R130YLD
SYMBOL res 80 -376 R90
SYMATTR InstName Rsns2
SYMATTR Value 0.083m
SYMBOL nmos -544 -168 R270
SYMATTR InstName M2
SYMATTR Value PSMN1R025YLD
SYMBOL cap -32 552 R0
SYMATTR InstName C4
SYMATTR Value 47n
SYMBOL cap 320 -104 R0
SYMATTR InstName CL
SYMATTR Value 10m
SYMBOL res -944 104 R0
SYMATTR InstName R1
SYMATTR Value 1k
SYMBOL res -624 -24 R0
SYMATTR InstName R4
SYMATTR Value 100k
SYMBOL cap -784 120 R0
SYMATTR InstName C1
SYMATTR Value 33n
SYMBOL res -784 8 R0
SYMATTR InstName R7
SYMATTR Value 1k
SYMBOL sw 672 72 M180
SYMATTR InstName S1
SYMATTR Value SW_load
SYMBOL res 656 -168 R0
SYMATTR InstName RL2
SYMATTR Value 0.12
SYMBOL res -288 -600 R90
SYMATTR InstName R12
SYMATTR Value 10
SYMBOL nmos -544 -616 R270
SYMATTR InstName M5
SYMATTR Value PSMN1R025YLD
SYMBOL nmos -544 -472 R270
SYMATTR InstName M4
SYMATTR Value PSMN1R025YLD
SYMBOL res -288 -456 R90
SYMATTR InstName R11
SYMATTR Value 10
SYMBOL res 432 -152 R0
SYMATTR InstName RL
SYMATTR Value 100
SYMBOL sw 864 24 R180
SYMATTR InstName S2
SYMATTR Value SHORT
SYMBOL voltage 1024 -56 R0
SYMATTR InstName V2
SYMATTR Value PULSE(0 1 300m 1m 1m 10m)
SYMBOL voltage 384 344 M0
SYMATTR InstName V3
SYMATTR Value 0
SYMBOL LT4239 -240 312 R0
SYMATTR InstName U2