* SPICE netlist
M1 N005 N006 COM COM PSMN075100MSE
M2 N004 N007 COM COM PSMN075100MSE
M3 N001 N002 N005 N005 PSMN075100MSE
M4 N001 N003 N004 N004 PSMN075100MSE
M5 N005 N023 COM COM PSMN075100MSE
M6 N004 N024 COM COM PSMN075100MSE
M7 N001 N018 N005 N005 PSMN075100MSE
M8 N001 N019 N004 N004 PSMN075100MSE
M9 N001 N008 OUT OUT PSMN040100MSE
C1 N012 COM 47n
R1 N008 N012 3.32K
C2 OUT COM 10 IC=0 Rser=1.8
C3 N010 COM .047
R2 N001 N010 8.25
R3 OUT N014 100K
R4 OUT N017 100K
Rload1 OUT COM 100
Rcls1 N013 COM 49.9
Rcls2 N015 COM 118
XU2 COM COM N013 N015 COM N017 N014 OUT N008 N010 LT4275A ;pnba _IEEEUVLO)AUX)Rclass)Rclass++)GND)_T2P)pwrGD)HSsrc)HSgate)Vport
Rcable1 0 N005 12
XU3 N009 0 0 N021 N022 N020 N004 Status Class N011 NC_01 N011 N016 LTC4274 ;pnba Vdd)Dgnd)Agnd)Vee)Sense)Gate)Out)>Status)>Class)Auto)Mid)_Reset)_Shdn
V1 N011 0 3.3
V2 N009 0 PWL(0 0 100u 3.3)
M10 N004 N020 N022 N022 PSMN075100MSE
R5 N022 N021 .25
V3 0 N021 56
V4 N016 0 PWL(0 0 10u 3.3 0.7 3.3 +10u 0)
CPSE 0 N004 .22 Rser=10m
XU1 N003 N004 N005 N018 N019 N004 N024 N023 COM N001 N014 N001 N007 N006 N005 N002 LT4321 ;pnba TG36)In36)In45)TG45)TG78)In78)BG78)BG45)OutN)_EN)EN)OutP)BG36)BG12)In12)TG12
C4 N001 COM .047
.tran .8 startup

* LTspice schematic (.asc)
Version 4
SHEET 1 3680 1392
WIRE 320 -696 -48 -696
WIRE -48 -648 -48 -696
WIRE -48 -648 -112 -648
WIRE 16 -648 -48 -648
WIRE -112 -616 -112 -648
WIRE 16 -616 16 -648
WIRE -160 -536 -192 -536
WIRE 96 -536 64 -536
WIRE 16 -504 16 -520
WIRE 16 -504 -304 -504
WIRE -112 -456 -112 -520
WIRE -112 -456 -384 -456
WIRE -112 -440 -112 -456
WIRE 16 -440 16 -504
WIRE -544 -344 -544 -360
WIRE -512 -344 -544 -344
WIRE -384 -344 -384 -456
WIRE -384 -344 -432 -344
WIRE -1072 -328 -1072 -344
WIRE 320 -328 320 -696
WIRE 448 -328 320 -328
WIRE 1088 -328 448 -328
WIRE 1296 -328 1088 -328
WIRE 1520 -328 1392 -328
WIRE 1584 -328 1520 -328
WIRE 1840 -328 1584 -328
WIRE -112 -312 -112 -344
WIRE -48 -312 -112 -312
WIRE 16 -312 16 -344
WIRE 16 -312 -48 -312
WIRE 1584 -312 1584 -328
WIRE 1840 -312 1840 -328
WIRE 448 -296 448 -328
WIRE 1088 -296 1088 -328
WIRE -48 -280 -48 -312
WIRE -160 -264 -160 -360
WIRE -96 -264 -160 -264
WIRE 64 -264 64 -360
WIRE 64 -264 0 -264
WIRE 1376 -248 1376 -280
WIRE 1424 -248 1376 -248
WIRE 1424 -232 1424 -248
WIRE -1072 -216 -1072 -248
WIRE 1584 -216 1584 -248
WIRE 1840 -216 1840 -232
WIRE -192 -200 -192 -536
WIRE -96 -200 -96 -264
WIRE 0 -200 0 -264
WIRE 96 -200 96 -536
WIRE 448 -200 448 -232
WIRE 1088 -200 1088 -216
WIRE 1120 -200 1088 -200
WIRE 1120 -184 1120 -200
WIRE -1552 -136 -1840 -136
WIRE -1472 -136 -1552 -136
WIRE 672 -136 640 -136
WIRE 1088 -136 1088 -200
WIRE 1088 -136 1056 -136
WIRE 1424 -136 1424 -152
WIRE -1840 -120 -1840 -136
WIRE -656 -104 -672 -104
WIRE -384 -104 -384 -344
WIRE -240 -104 -384 -104
WIRE 208 -104 144 -104
WIRE 320 -104 320 -328
WIRE 320 -104 208 -104
WIRE 1120 -88 1120 -120
WIRE 672 -72 640 -72
WIRE 1376 -72 1376 -248
WIRE 1376 -72 1056 -72
WIRE -304 -40 -304 -504
WIRE -240 -40 -304 -40
WIRE 208 -40 208 -104
WIRE 208 -40 144 -40
WIRE 1424 -40 1424 -72
WIRE -1840 -24 -1840 -40
WIRE 480 -8 464 -8
WIRE 672 -8 560 -8
WIRE 1520 -8 1520 -328
WIRE 1520 -8 1056 -8
WIRE -1552 24 -1552 -136
WIRE -1472 24 -1552 24
WIRE -656 24 -672 24
WIRE -384 24 -384 -104
WIRE -240 24 -384 24
WIRE 368 24 144 24
WIRE 560 56 464 56
WIRE 672 56 640 56
WIRE 1120 56 1056 56
WIRE 1152 56 1120 56
WIRE 1520 56 1520 -8
WIRE 1520 56 1232 56
WIRE -304 88 -304 -40
WIRE -304 88 -464 88
WIRE -240 88 -304 88
WIRE 176 88 144 88
WIRE -1472 104 -1840 104
WIRE -1840 120 -1840 104
WIRE 672 120 640 120
WIRE 1312 120 1056 120
WIRE 1520 120 1520 56
WIRE 1520 120 1392 120
WIRE 368 200 368 24
WIRE 1120 200 1120 56
WIRE 1120 200 368 200
WIRE -1840 216 -1840 200
WIRE -1312 248 -1312 184
WIRE -1184 248 -1184 184
WIRE -624 248 -624 232
WIRE -96 264 -96 184
WIRE -96 264 -160 264
WIRE 0 264 0 184
WIRE 64 264 0 264
WIRE -1440 280 -1440 264
WIRE 320 296 320 -104
WIRE 320 296 -48 296
WIRE -848 328 -848 184
WIRE -48 328 -48 296
WIRE -48 328 -112 328
WIRE 16 328 -48 328
WIRE -112 360 -112 328
WIRE 16 360 16 328
WIRE -1440 376 -1440 360
WIRE -1072 376 -1072 184
WIRE -1072 376 -1440 376
WIRE -1056 376 -1072 376
WIRE -960 376 -960 184
WIRE -960 376 -976 376
WIRE -864 376 -960 376
WIRE -736 376 -736 184
WIRE -736 376 -768 376
WIRE -624 376 -624 312
WIRE -624 376 -736 376
WIRE -464 376 -464 88
WIRE -464 376 -624 376
WIRE -160 440 -160 264
WIRE 64 440 64 264
WIRE -384 488 -384 24
WIRE -112 488 -112 456
WIRE -112 488 -384 488
WIRE -304 520 -304 88
WIRE 16 520 16 456
WIRE 16 520 -304 520
WIRE -112 536 -112 488
WIRE 16 536 16 520
WIRE -192 616 -192 184
WIRE -160 616 -192 616
WIRE 96 616 96 184
WIRE 96 616 64 616
WIRE -112 664 -112 632
WIRE -48 664 -112 664
WIRE 16 664 16 632
WIRE 16 664 -48 664
WIRE -48 696 -48 664
FLAG 1840 -328 OUT
FLAG -1312 248 0
FLAG -1184 248 0
FLAG -1840 -24 0
FLAG -1072 -344 0
FLAG -656 -104 Status
FLAG -656 24 Class
FLAG -1440 264 0
FLAG -544 -360 0
FLAG -1840 216 0
FLAG -624 232 0
FLAG -48 -280 COM
FLAG -48 696 COM
FLAG 1584 -216 COM
FLAG 1840 -216 COM
FLAG 464 -8 COM
FLAG 464 56 COM
FLAG 640 120 COM
FLAG 1120 -88 COM
FLAG 1424 -40 COM
FLAG 176 88 COM
FLAG 640 -136 COM
FLAG 640 -72 COM
FLAG 448 -200 COM
SYMBOL nmos -160 -440 R0
SYMATTR Value PSMN075100MSE
SYMATTR InstName M1
SYMBOL nmos 64 -440 M0
SYMATTR Value PSMN075100MSE
SYMATTR InstName M2
SYMBOL nmos -160 -616 R0
SYMATTR Value PSMN075100MSE
SYMATTR InstName M3
SYMBOL nmos 64 -616 M0
SYMATTR Value PSMN075100MSE
SYMATTR InstName M4
SYMBOL nmos -160 536 R0
SYMATTR Value PSMN075100MSE
SYMATTR InstName M5
SYMBOL nmos 64 536 M0
SYMATTR Value PSMN075100MSE
SYMATTR InstName M6
SYMBOL nmos -160 360 R0
SYMATTR Value PSMN075100MSE
SYMATTR InstName M7
SYMBOL nmos 64 360 M0
SYMATTR Value PSMN075100MSE
SYMATTR InstName M8
SYMBOL nmos 1296 -280 R270
SYMATTR InstName M9
SYMATTR Value PSMN040100MSE
SYMBOL cap 1408 -136 R0
SYMATTR InstName C1
SYMATTR Value 47n
SYMBOL res 1408 -248 R0
SYMATTR InstName R1
SYMATTR Value 3.32K
SYMBOL polcap 1568 -312 R0
SYMATTR Value 10
SYMATTR SpiceLine Rser=1.8
SYMATTR Value2 IC=0
SYMATTR InstName C2
SYMATTR Description Capacitor
SYMATTR Type cap
SYMBOL cap 1104 -184 R0
SYMATTR InstName C3
SYMATTR Value .047
SYMBOL res 1072 -312 R0
SYMATTR InstName R2
SYMATTR Value 8.25
SYMBOL res 1248 40 R90
SYMATTR InstName R3
SYMATTR Value 100K
SYMBOL res 1408 104 R90
SYMATTR InstName R4
SYMATTR Value 100K
SYMBOL res 1824 -328 R0
SYMATTR InstName Rload1
SYMATTR Value 100
SYMBOL res 576 -24 R90
SYMATTR InstName Rcls1
SYMATTR Value 49.9
SYMBOL res 656 40 R90
SYMATTR InstName Rcls2
SYMATTR Value 118
SYMBOL LT4275A 864 -8 R0
SYMATTR InstName U2
SYMBOL res -528 -328 R270
SYMATTR InstName Rcable1
SYMATTR Value 12
SYMBOL LTC4274 -1072 -40 R0
SYMATTR InstName U3
SYMBOL voltage -1840 -136 R0
SYMATTR InstName V1
SYMATTR Value 3.3
SYMBOL voltage -1072 -232 M180
SYMATTR InstName V2
SYMATTR Value PWL(0 0 100u 3.3)
SYMBOL nmos -768 328 R90
SYMATTR InstName M10
SYMATTR Value PSMN075100MSE
SYMBOL res -960 360 R90
SYMATTR InstName R5
SYMATTR Value .25
SYMBOL voltage -1440 264 R0
SYMATTR InstName V3
SYMATTR Value 56
SYMBOL voltage -1840 104 R0
SYMATTR InstName V4
SYMATTR Value PWL(0 0 10u 3.3 0.7 3.3 +10u 0)
SYMBOL cap -640 248 R0
SYMATTR SpiceLine Rser=10m
SYMATTR InstName CPSE
SYMATTR Value .22
SYMBOL LT4321 -48 -8 R0
SYMATTR InstName U1
SYMBOL cap 432 -296 R0
SYMATTR InstName C4
SYMATTR Value .047