* 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
C8 N020 0 .1
R8 N005 N007 15K
R9 N007 0 2K
R10 N001 N016 100K
R11 N001 N017 100K
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 LTC4236-1 ;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
Rload N005 0 1.7
.tran 2.5

* LTspice schematic (.asc)
Version 4
SHEET 1 2704 944
WIRE 264 -472 -744 -472
WIRE -600 -424 -1352 -424
WIRE -504 -424 -600 -424
WIRE -424 -424 -504 -424
WIRE 264 -424 264 -472
WIRE 264 -424 -328 -424
WIRE 872 -424 264 -424
WIRE 968 -424 872 -424
WIRE 1064 -424 968 -424
WIRE 1160 -424 1064 -424
WIRE -1352 -408 -1352 -424
WIRE -1352 -312 -1352 -328
WIRE -312 -296 -1032 -296
WIRE -216 -296 -312 -296
WIRE -120 -296 -216 -296
WIRE -40 -296 -120 -296
WIRE 72 -296 56 -296
WIRE 168 -296 72 -296
WIRE 264 -296 264 -424
WIRE 264 -296 168 -296
WIRE 360 -296 344 -296
WIRE 376 -296 360 -296
WIRE 680 -296 472 -296
WIRE 776 -296 680 -296
WIRE 1240 -296 776 -296
WIRE 1352 -296 1240 -296
WIRE -1032 -280 -1032 -296
WIRE 1240 -280 1240 -296
WIRE 1352 -280 1352 -296
WIRE 776 -200 776 -296
WIRE -1032 -184 -1032 -200
WIRE 1240 -184 1240 -216
WIRE 1352 -184 1352 -200
WIRE -600 -168 -600 -424
WIRE 72 -168 72 -296
WIRE 872 -168 872 -424
WIRE 1064 -168 1064 -424
WIRE -312 -152 -312 -296
WIRE 456 -136 456 -168
WIRE 472 -136 456 -136
WIRE 632 -136 616 -136
WIRE 776 -104 776 -120
WIRE 776 -104 728 -104
WIRE 680 -88 680 -296
WIRE 680 -88 552 -88
WIRE 776 -88 776 -104
WIRE -600 -72 -600 -104
WIRE -504 -72 -504 -424
WIRE -408 -72 -408 -376
WIRE -312 -72 -312 -88
WIRE -216 -72 -216 -296
WIRE -120 -72 -120 -296
WIRE -24 -72 -24 -248
WIRE 72 -72 72 -104
WIRE 168 -72 168 -296
WIRE 264 -72 264 -296
WIRE 360 -72 360 -296
WIRE 456 -72 456 -136
WIRE 552 -72 552 -88
WIRE 968 -72 968 -424
WIRE 1160 -72 1160 -424
WIRE -744 -24 -744 -472
WIRE 728 -8 728 -104
WIRE 728 -8 600 -8
WIRE 776 8 776 -8
WIRE 872 56 872 -88
WIRE 872 56 600 56
WIRE -744 72 -744 56
WIRE -648 72 -744 72
WIRE -744 88 -744 72
WIRE 968 120 968 8
WIRE 968 120 600 120
WIRE -744 184 -744 168
WIRE 1064 184 1064 -88
WIRE 1064 184 600 184
WIRE -648 232 -680 232
WIRE 1160 248 1160 8
WIRE 1160 248 600 248
WIRE 616 312 600 312
WIRE -360 392 -360 376
WIRE -216 392 -216 376
WIRE -24 392 -24 376
WIRE 168 392 168 376
WIRE 312 392 312 376
WIRE -360 472 -360 456
WIRE 168 472 168 456
WIRE 312 472 312 456
FLAG -216 392 0
FLAG 1240 -184 0
FLAG -360 472 0
FLAG 312 472 0
FLAG -744 184 0
FLAG -1032 -184 0
FLAG -1352 -312 0
FLAG 1352 -184 0
FLAG 632 -136 0
FLAG -24 392 0
FLAG 168 472 0
FLAG 776 8 0
FLAG -680 232 0
SYMBOL nmos 376 -248 R270
SYMATTR InstName Q1
SYMATTR Value SiR158DP
SYMBOL cap 1224 -280 R0
SYMATTR InstName C1
SYMATTR Value 10
SYMBOL res 360 -312 R90
SYMATTR InstName R1
SYMATTR Value 3m
SYMBOL cap 56 -168 R0
SYMATTR InstName C2
SYMATTR Value .1
SYMBOL nmos 56 -248 M270
SYMATTR InstName Q2
SYMATTR Value SiR158DP
SYMBOL cap -328 -152 R0
SYMATTR InstName C3
SYMATTR Value .1
SYMBOL nmos -328 -376 M270
SYMATTR InstName Q3
SYMATTR Value SiR158DP
SYMBOL cap -376 392 R0
SYMATTR InstName C4
SYMATTR Value .1
SYMBOL cap 296 392 R0
SYMATTR InstName C5
SYMATTR Value .1
SYMBOL res -760 -40 R0
SYMATTR InstName R2
SYMATTR Value 13.7K
SYMBOL res -760 72 R0
SYMATTR InstName R3
SYMATTR Value 2K
SYMBOL res 856 -184 R0
SYMATTR InstName R4
SYMATTR Value 100K
SYMBOL res 952 -88 R0
SYMATTR InstName R5
SYMATTR Value 100K
SYMBOL voltage -1352 -424 R0
SYMATTR Value PWL(0 0 100u 10 150m 10.5 2.15 13.5)
SYMATTR InstName V1
SYMBOL voltage -1032 -296 R0
SYMATTR InstName V2
SYMATTR Value PWL(0 0 100u 12)
SYMBOL cap -616 -168 R0
SYMATTR InstName C6
SYMATTR Value .1
SYMBOL res 440 -264 R0
SYMATTR InstName R6
SYMATTR Value 10
SYMBOL res 568 -152 R90
SYMATTR InstName R7
SYMATTR Value 1K
SYMBOL cap 616 -152 R90
SYMATTR InstName C7
SYMATTR Value 10n
SYMBOL cap 152 392 R0
SYMATTR InstName C8
SYMATTR Value .1
SYMBOL res 760 -216 R0
SYMATTR InstName R8
SYMATTR Value 15K
SYMBOL res 760 -104 R0
SYMATTR InstName R9
SYMATTR Value 2K
SYMBOL res 1048 -184 R0
SYMATTR InstName R10
SYMATTR Value 100K
SYMBOL res 1144 -88 R0
SYMATTR InstName R11
SYMATTR Value 100K
SYMBOL LTC4236-1 -24 152 R0
SYMATTR InstName U1
SYMBOL res 1336 -296 R0
SYMATTR InstName Rload
SYMATTR Value 1.7