* SPICE netlist
MQ1 N004 P001 N005 N005 SiR158DP
C1 N005 0 10
R1 N004 N001 3m
C2 N001 N012 .1
MQ2 N001 N011 N003 N003 SiR158DP
C3 N003 N010 .1
MQ3 N001 N009 N002 N002 SiR158DP
C4 N019 0 .1
C5 N021 0 .1
R2 N001 N014 13.7K
R3 N014 0 2K
R4 N001 N013 100K
R5 N001 N015 100K
V1 N002 0 PWL(0 0 100u 10 150m 10.5 2.15 13.5)
V2 N003 0 PWL(0 0 100u 12)
C6 N002 N008 .1
R6 P001 N006 10
R7 P002 N006 1K
C7 0 P002 10n
XU1 N004 N001 N002 N019 0 N003 N011 N010 N021 0 N018 N012 0 N014 N013 N015 N005 N006 N008 N009 N001 N007 N003 N016 N017 N020 LTC4236-2 ;pnba Sense-)Sense+)In1)IntVcc)Gnd)In2)Dgate2)Cpo2)Ftmr)_EN)Imon)Reg)D2off)On)_Fault)_Pwrgd)Out)Hgate)Cpo1)Dgate1)CS+)Fb)D2SRC)_Dstat1)_Dstat2)Dtmr
C8 N020 0 .1
R8 N005 N007 15K
R9 N007 0 2K
R10 N001 N016 100K
R11 N001 N017 100K
Rload N005 0 1.7
.tran 2.5

* LTspice schematic (.asc)
Version 4
SHEET 1 2672 992
WIRE 248 -496 -792 -496
WIRE -616 -416 -1336 -416
WIRE -520 -416 -616 -416
WIRE -440 -416 -520 -416
WIRE 248 -416 248 -496
WIRE 248 -416 -344 -416
WIRE 856 -416 248 -416
WIRE 952 -416 856 -416
WIRE 1048 -416 952 -416
WIRE 1144 -416 1048 -416
WIRE -1336 -400 -1336 -416
WIRE -1336 -304 -1336 -320
WIRE -328 -288 -1048 -288
WIRE -232 -288 -328 -288
WIRE -136 -288 -232 -288
WIRE -56 -288 -136 -288
WIRE 56 -288 40 -288
WIRE 152 -288 56 -288
WIRE 248 -288 248 -416
WIRE 248 -288 152 -288
WIRE 344 -288 328 -288
WIRE 360 -288 344 -288
WIRE 664 -288 456 -288
WIRE 760 -288 664 -288
WIRE 1224 -288 760 -288
WIRE 1336 -288 1224 -288
WIRE -1048 -272 -1048 -288
WIRE 1224 -272 1224 -288
WIRE 1336 -272 1336 -288
WIRE 760 -192 760 -288
WIRE -1048 -176 -1048 -192
WIRE 1224 -176 1224 -208
WIRE 1336 -176 1336 -192
WIRE -616 -160 -616 -416
WIRE 56 -160 56 -288
WIRE -328 -144 -328 -288
WIRE 856 -144 856 -416
WIRE 1048 -144 1048 -416
WIRE 440 -128 440 -160
WIRE 456 -128 440 -128
WIRE 616 -128 600 -128
WIRE 760 -96 760 -112
WIRE 760 -96 712 -96
WIRE 664 -80 664 -288
WIRE 664 -80 536 -80
WIRE 760 -80 760 -96
WIRE -616 -64 -616 -96
WIRE -520 -64 -520 -416
WIRE -424 -64 -424 -368
WIRE -328 -64 -328 -80
WIRE -232 -64 -232 -288
WIRE -136 -64 -136 -288
WIRE -40 -64 -40 -240
WIRE 56 -64 56 -96
WIRE 152 -64 152 -288
WIRE 248 -64 248 -288
WIRE 344 -64 344 -288
WIRE 440 -64 440 -128
WIRE 536 -64 536 -80
WIRE 952 -64 952 -416
WIRE 1144 -64 1144 -416
WIRE -792 -48 -792 -496
WIRE 712 0 712 -96
WIRE 712 0 584 0
WIRE 760 16 760 0
WIRE 856 64 856 -64
WIRE 856 64 584 64
WIRE -792 80 -792 32
WIRE -664 80 -792 80
WIRE -792 96 -792 80
WIRE 952 128 952 16
WIRE 952 128 584 128
WIRE 1048 192 1048 -64
WIRE 1048 192 584 192
WIRE -792 224 -792 176
WIRE -664 240 -696 240
WIRE 1144 256 1144 16
WIRE 1144 256 584 256
WIRE 616 320 584 320
WIRE -376 416 -376 384
WIRE -232 416 -232 384
WIRE -40 416 -40 384
WIRE 152 416 152 384
WIRE 296 416 296 384
WIRE -376 496 -376 480
WIRE 152 496 152 480
WIRE 296 496 296 480
FLAG -232 416 0
FLAG 1224 -176 0
FLAG -376 496 0
FLAG 296 496 0
FLAG -792 224 0
FLAG -1048 -176 0
FLAG -1336 -304 0
FLAG 1336 -176 0
FLAG 616 -128 0
FLAG -40 416 0
FLAG 152 496 0
FLAG 760 16 0
FLAG -696 240 0
SYMBOL nmos 360 -240 R270
SYMATTR InstName Q1
SYMATTR Value SiR158DP
SYMBOL cap 1208 -272 R0
SYMATTR InstName C1
SYMATTR Value 10
SYMBOL res 344 -304 R90
SYMATTR InstName R1
SYMATTR Value 3m
SYMBOL cap 40 -160 R0
SYMATTR InstName C2
SYMATTR Value .1
SYMBOL nmos 40 -240 M270
SYMATTR InstName Q2
SYMATTR Value SiR158DP
SYMBOL cap -344 -144 R0
SYMATTR InstName C3
SYMATTR Value .1
SYMBOL nmos -344 -368 M270
SYMATTR InstName Q3
SYMATTR Value SiR158DP
SYMBOL cap -392 416 R0
SYMATTR InstName C4
SYMATTR Value .1
SYMBOL cap 280 416 R0
SYMATTR InstName C5
SYMATTR Value .1
SYMBOL res -808 -64 R0
SYMATTR InstName R2
SYMATTR Value 13.7K
SYMBOL res -808 80 R0
SYMATTR InstName R3
SYMATTR Value 2K
SYMBOL res 840 -160 R0
SYMATTR InstName R4
SYMATTR Value 100K
SYMBOL res 936 -80 R0
SYMATTR InstName R5
SYMATTR Value 100K
SYMBOL voltage -1336 -416 R0
SYMATTR Value PWL(0 0 100u 10 150m 10.5 2.15 13.5)
SYMATTR InstName V1
SYMBOL voltage -1048 -288 R0
SYMATTR InstName V2
SYMATTR Value PWL(0 0 100u 12)
SYMBOL cap -632 -160 R0
SYMATTR InstName C6
SYMATTR Value .1
SYMBOL res 424 -256 R0
SYMATTR InstName R6
SYMATTR Value 10
SYMBOL res 552 -144 R90
SYMATTR InstName R7
SYMATTR Value 1K
SYMBOL cap 600 -144 R90
SYMATTR InstName C7
SYMATTR Value 10n
SYMBOL LTC4236-2 -40 160 R0
SYMATTR InstName U1
SYMBOL cap 136 416 R0
SYMATTR InstName C8
SYMATTR Value .1
SYMBOL res 744 -208 R0
SYMATTR InstName R8
SYMATTR Value 15K
SYMBOL res 744 -96 R0
SYMATTR InstName R9
SYMATTR Value 2K
SYMBOL res 1032 -160 R0
SYMATTR InstName R10
SYMATTR Value 100K
SYMBOL res 1128 -80 R0
SYMATTR InstName R11
SYMATTR Value 100K
SYMBOL res 1320 -288 R0
SYMATTR InstName Rload
SYMATTR Value 1.7