* SPICE netlist
XU1 N001 IN1 N011 0 N015 IN2 N022 N020 N018 N017 OUT N014 N016 0 N013 N012 0 N008 N009 N010 OUT N006 N007 N005 LTC4225-1 ;pnba Sense1)In1)IntVcc)Gnd)On2)In2)Sense2)DGate2)Cpo2)HGate2)Out2)_Pwrgd2)_Fault2)_En2)Tmr2)Tmr1)_En1)On1)_Fault1)_Pwrgd1)Out1)HGate1)Cpo1)DGate1
MQ1 N002 N003 OUT OUT Si7386DP
MQ2 N002 N005 N001 N001 Si7386DP
MQ3 N023 N020 N022 N022 Si7386DP
MQ4 N023 N021 OUT OUT Si7386DP
C1 IN1 N007 .1
R2 IN1 N009 100K
R3 IN1 N010 100K
R4 N006 N004 47
R5 N006 N003 10
C2 N004 0 .015
C3 0 N012 .047
C4 0 N013 .047
R6 N016 IN2 100K
R7 N014 IN2 100K
R8 N017 N019 47
C5 N019 0 .015
R9 N017 N021 10
C6 N018 IN2 .1
R11 N008 IN1 137K
R12 0 N008 20K
R13 N015 0 20K
C7 N008 0 .01
C8 0 N015 .01
C9 N011 0 .1
R14 IN2 N015 137K
C10 OUT 0 100
Rload OUT 0 1.7
V1 IN1 0 PWL(0 0 20u 0 +1u 11 +200m 11 +100m 13 +100m 13 +100m 11)
V2 IN2 0 PWL(0 0 10u 0 +1u 12)
R1 N001 IN1 .004
R10 N022 IN2 .004
.tran 600m

* LTspice schematic (.asc)
Version 4
SHEET 1 2608 1168
WIRE 920 -584 -184 -584
WIRE -456 -520 -1304 -520
WIRE -184 -520 -184 -584
WIRE -184 -520 -456 -520
WIRE -104 -520 -184 -520
WIRE 24 -520 -104 -520
WIRE 56 -520 24 -520
WIRE 152 -520 136 -520
WIRE 200 -520 152 -520
WIRE 392 -520 296 -520
WIRE 680 -520 488 -520
WIRE 1096 -520 680 -520
WIRE -1304 -504 -1304 -520
WIRE -104 -472 -104 -520
WIRE 584 -472 584 -488
WIRE -1304 -408 -1304 -424
WIRE 472 -408 472 -472
WIRE 584 -392 584 -408
WIRE 216 -360 216 -472
WIRE 264 -360 216 -360
WIRE 920 -360 920 -584
WIRE 920 -360 840 -360
WIRE 1000 -360 920 -360
WIRE -456 -344 -456 -520
WIRE 840 -296 840 -360
WIRE 1000 -296 1000 -360
WIRE 472 -280 472 -328
WIRE 584 -280 584 -312
WIRE 584 -280 472 -280
WIRE -104 -264 -104 -408
WIRE 24 -264 24 -520
WIRE 152 -264 152 -520
WIRE 264 -264 264 -360
WIRE 472 -264 472 -280
WIRE 680 -264 680 -520
WIRE -456 -184 -456 -264
WIRE -344 -184 -456 -184
WIRE -200 -184 -344 -184
WIRE 840 -184 840 -216
WIRE 840 -184 760 -184
WIRE -456 -136 -456 -184
WIRE -344 -136 -344 -184
WIRE -200 -120 -216 -120
WIRE 1000 -120 1000 -216
WIRE 1000 -120 760 -120
WIRE -200 -56 -264 -56
WIRE 792 -56 760 -56
WIRE 872 -56 856 -56
WIRE 1096 -24 1096 -520
WIRE 1192 -24 1096 -24
WIRE 1304 -24 1192 -24
WIRE -456 -8 -456 -56
WIRE -456 -8 -536 -8
WIRE -344 -8 -344 -72
WIRE -344 -8 -456 -8
WIRE 1304 -8 1304 -24
WIRE 1192 8 1192 -24
WIRE -536 24 -536 -8
WIRE -456 24 -456 -8
WIRE -344 24 -344 -8
WIRE -264 24 -264 8
WIRE -200 24 -264 24
WIRE 792 24 760 24
WIRE 872 24 856 24
WIRE -264 56 -264 24
WIRE -200 88 -216 88
WIRE 1000 88 760 88
WIRE 1192 88 1192 72
WIRE 1304 88 1304 72
WIRE -456 152 -456 104
WIRE -344 152 -344 88
WIRE -344 152 -456 152
WIRE -200 152 -344 152
WIRE 824 152 760 152
WIRE 824 216 824 152
WIRE 1000 216 1000 88
WIRE -456 248 -456 152
WIRE 472 248 472 232
WIRE 584 248 472 248
WIRE -104 264 -104 232
WIRE 472 264 472 248
WIRE 584 264 584 248
WIRE 584 360 584 344
WIRE 824 376 824 296
WIRE 920 376 824 376
WIRE 1000 376 1000 296
WIRE 1000 376 920 376
WIRE 264 424 264 232
WIRE 472 424 472 344
WIRE 584 440 584 424
WIRE -456 472 -456 328
WIRE -456 472 -584 472
WIRE -248 472 -456 472
WIRE -104 472 -104 328
WIRE -104 472 -248 472
WIRE 24 472 24 232
WIRE 24 472 -104 472
WIRE 56 472 24 472
WIRE 152 472 152 232
WIRE 152 472 136 472
WIRE 248 472 152 472
WIRE 392 472 344 472
WIRE 680 472 680 232
WIRE 680 472 488 472
WIRE 1096 472 1096 -24
WIRE 1096 472 680 472
WIRE -584 488 -584 472
WIRE -248 536 -248 472
WIRE 920 536 920 376
WIRE 920 536 -248 536
WIRE -584 584 -584 568
FLAG 584 -488 0
FLAG 584 440 0
FLAG 872 -56 0
FLAG 872 24 0
FLAG -536 24 0
FLAG -264 56 0
FLAG -216 -120 0
FLAG -216 88 0
FLAG -1304 -408 0
FLAG -584 584 0
FLAG -1304 -520 IN1
FLAG -584 472 IN2
FLAG 1304 -24 OUT
FLAG 1192 88 0
FLAG 1304 88 0
SYMBOL LTC4225-1 -104 -40 R0
SYMATTR InstName U1
SYMBOL nmos 392 -472 R270
SYMATTR InstName Q1
SYMATTR Value Si7386DP
SYMBOL nmos 296 -472 M270
SYMATTR InstName Q2
SYMATTR Value Si7386DP
SYMBOL nmos 344 424 R90
SYMATTR InstName Q3
SYMATTR Value Si7386DP
SYMBOL nmos 392 424 M90
SYMATTR InstName Q4
SYMATTR Value Si7386DP
SYMBOL cap -120 -472 R0
SYMATTR InstName C1
SYMATTR Value .1
SYMBOL res 824 -312 R0
SYMATTR InstName R2
SYMATTR Value 100K
SYMBOL res 984 -312 R0
SYMATTR InstName R3
SYMATTR Value 100K
SYMBOL res 568 -296 M180
SYMATTR InstName R4
SYMATTR Value 47
SYMBOL res 456 -312 M180
SYMATTR InstName R5
SYMATTR Value 10
SYMBOL cap 568 -408 M180
SYMATTR InstName C2
SYMATTR Value .015
SYMBOL cap 856 -72 R90
SYMATTR InstName C3
SYMATTR Value .047
SYMBOL cap 856 8 R90
SYMATTR InstName C4
SYMATTR Value .047
SYMBOL res 808 200 R0
SYMATTR InstName R6
SYMATTR Value 100K
SYMBOL res 984 200 R0
SYMATTR InstName R7
SYMATTR Value 100K
SYMBOL res 568 248 R0
SYMATTR InstName R8
SYMATTR Value 47
SYMBOL cap 568 360 R0
SYMATTR Value .015
SYMATTR InstName C5
SYMBOL res 456 248 R0
SYMATTR InstName R9
SYMATTR Value 10
SYMBOL cap -120 264 R0
SYMATTR InstName C6
SYMATTR Value .1
SYMBOL res -472 -248 M180
SYMATTR InstName R11
SYMATTR Value 137K
SYMBOL res -472 -40 M180
SYMATTR InstName R12
SYMATTR Value 20K
SYMBOL res -472 120 M180
SYMATTR InstName R13
SYMATTR Value 20K
SYMBOL cap -360 -136 R0
SYMATTR InstName C7
SYMATTR Value .01
SYMBOL cap -360 24 R0
SYMATTR InstName C8
SYMATTR Value .01
SYMBOL cap -280 -56 R0
SYMATTR InstName C9
SYMATTR Value .1
SYMBOL res -472 344 M180
SYMATTR InstName R14
SYMATTR Value 137K
SYMBOL cap 1176 8 R0
SYMATTR InstName C10
SYMATTR Value 100
SYMBOL res 1288 -24 R0
SYMATTR InstName Rload
SYMATTR Value 1.7
SYMBOL voltage -1304 -520 R0
SYMATTR InstName V1
SYMATTR Value PWL(0 0 20u 0 +1u 11 +200m 11 +100m 13 +100m 13 +100m 11)
SYMBOL voltage -584 472 R0
SYMATTR InstName V2
SYMATTR Value PWL(0 0 10u 0 +1u 12)
SYMBOL res 152 -536 R90
SYMATTR InstName R1
SYMATTR Value .004
SYMBOL res 152 456 R90
SYMATTR InstName R10
SYMATTR Value .004