* SPICE netlist
MQ3 N002 N004 OUT OUT Si7386DP
MQ1 N001 N008 IN1 IN1 Si7386DP
C1 IN1 N007 .1
R6 N001 N012 100K
R7 N001 N014 100K
R3 N005 N006 47
R2 N005 N004 10
C3 N006 0 .015
C6 0 N015 .1
C2 IN2 N009 .1
R5 N011 N001 137K
R4 0 N011 20K
C4 N011 0 .01
C5 N013 0 .1
C7 OUT 0 100
V1 IN1 0 PWL(0 0 10u 0 +1u 11)
V2 IN2 0 PWL(0 0 10u 0 +1u 12)
R1 N002 N001 .006
MQ2 N001 N010 IN2 IN2 Si7386DP
S1 0 OUT N003 0 SCSW
V3 N003 0 PWL(0 0 300m 0 +1m 1 +10m 1 +1m 0)
XU1 N002 N001 IN1 N013 0 IN2 N010 N009 MP_01 N014 N012 0 N015 0 N011 MP_02 OUT N005 N007 N008 LTC4227-4 ;pnba Sense-)Sense+)In1)IntVcc)Gnd)In2)DGate2)Cpo2))_Pwrgd)_Fault)_D2on)Tmr)_En)On))Out)HGate)Cpo1)DGate1
.tran 1600m

* LTspice schematic (.asc)
Version 4
SHEET 1 1696 720
WIRE -480 -344 -832 -344
WIRE -400 -344 -480 -344
WIRE -336 -344 -400 -344
WIRE 48 -344 -240 -344
WIRE 64 -344 48 -344
WIRE 160 -344 144 -344
WIRE 192 -344 160 -344
WIRE 496 -344 288 -344
WIRE 560 -344 496 -344
WIRE 688 -344 560 -344
WIRE -832 -328 -832 -344
WIRE 560 -328 560 -344
WIRE 688 -328 688 -344
WIRE 848 -312 736 -312
WIRE -480 -296 -480 -344
WIRE 848 -296 848 -312
WIRE -832 -232 -832 -248
WIRE 560 -232 560 -264
WIRE 688 -232 688 -248
WIRE 272 -216 272 -296
WIRE 848 -200 848 -216
WIRE -240 -168 -832 -168
WIRE -160 -168 -240 -168
WIRE -96 -168 -160 -168
WIRE 48 -168 48 -344
WIRE 48 -168 0 -168
WIRE -832 -152 -832 -168
WIRE -240 -152 -240 -168
WIRE 272 -120 272 -136
WIRE 288 -120 272 -120
WIRE 384 -120 368 -120
WIRE 464 -120 448 -120
WIRE -832 -56 -832 -72
WIRE 496 -40 496 -344
WIRE 496 -40 352 -40
WIRE 48 -24 48 -168
WIRE 48 -24 -832 -24
WIRE 576 -24 48 -24
WIRE -832 -8 -832 -24
WIRE -480 -8 -480 -232
WIRE -400 -8 -400 -344
WIRE -320 -8 -320 -296
WIRE -240 -8 -240 -88
WIRE -160 -8 -160 -168
WIRE -80 -8 -80 -120
WIRE 48 -8 48 -24
WIRE 160 -8 160 -344
WIRE 272 -8 272 -120
WIRE 352 -8 352 -40
WIRE -832 120 -832 72
WIRE -704 120 -832 120
WIRE -544 120 -704 120
WIRE 432 120 416 120
WIRE 576 120 576 -24
WIRE 576 120 512 120
WIRE -832 136 -832 120
WIRE -704 136 -704 120
WIRE -544 200 -608 200
WIRE 480 200 416 200
WIRE 576 200 576 120
WIRE 576 200 560 200
WIRE -832 232 -832 216
WIRE -704 232 -704 200
WIRE -608 280 -608 264
WIRE -544 280 -608 280
WIRE 448 280 416 280
WIRE 528 280 512 280
WIRE -608 312 -608 280
WIRE -544 360 -560 360
WIRE 432 360 416 360
FLAG 464 -120 0
FLAG 528 280 0
FLAG -608 312 0
FLAG -832 -232 0
FLAG -832 -56 0
FLAG -832 -344 IN1
FLAG -832 -168 IN2
FLAG 688 -344 OUT
FLAG 560 -232 0
FLAG 688 -232 0
FLAG 736 -264 0
FLAG 848 -200 0
FLAG 432 360 0
FLAG -560 360 0
FLAG -832 232 0
FLAG -704 232 0
SYMBOL nmos 192 -296 R270
SYMATTR InstName Q3
SYMATTR Value Si7386DP
SYMBOL nmos -240 -296 M270
SYMATTR InstName Q1
SYMATTR Value Si7386DP
SYMBOL cap -496 -296 R0
SYMATTR InstName C1
SYMATTR Value .1
SYMBOL res 528 104 R90
SYMATTR InstName R6
SYMATTR Value 100K
SYMBOL res 576 184 R90
SYMATTR InstName R7
SYMATTR Value 100K
SYMBOL res 272 -136 M90
SYMATTR InstName R3
SYMATTR Value 47
SYMBOL res 256 -120 M180
SYMATTR InstName R2
SYMATTR Value 10
SYMBOL cap 384 -136 M90
SYMATTR InstName C3
SYMATTR Value .015
SYMBOL cap 512 264 R90
SYMATTR InstName C6
SYMATTR Value .1
SYMBOL cap -256 -152 R0
SYMATTR InstName C2
SYMATTR Value .1
SYMBOL res -848 88 M180
SYMATTR InstName R5
SYMATTR Value 137K
SYMBOL res -848 232 M180
SYMATTR InstName R4
SYMATTR Value 20K
SYMBOL cap -720 136 R0
SYMATTR InstName C4
SYMATTR Value .01
SYMBOL cap -624 200 R0
SYMATTR InstName C5
SYMATTR Value .1
SYMBOL cap 544 -328 R0
SYMATTR InstName C7
SYMATTR Value 100
SYMBOL voltage -832 -344 R0
SYMATTR InstName V1
SYMATTR Value PWL(0 0 10u 0 +1u 11)
SYMBOL voltage -832 -168 R0
SYMATTR InstName V2
SYMATTR Value PWL(0 0 10u 0 +1u 12)
SYMBOL res 160 -360 R90
SYMATTR InstName R1
SYMATTR Value .006
SYMBOL nmos 0 -120 M270
SYMATTR InstName Q2
SYMATTR Value Si7386DP
SYMBOL sw 688 -232 R180
SYMATTR InstName S1
SYMATTR Value SCSW
SYMBOL voltage 848 -312 R0
SYMATTR InstName V3
SYMATTR Value PWL(0 0 300m 0 +1m 1 +10m 1 +1m 0)
SYMBOL LTC4227-4 -448 216 R0
SYMATTR InstName U1