* SPICE netlist
C1 OUT4 0 10
R1 OUT4 0 16
C3 N032 0 47n
R3 IN N026 10K
V1 IN 0 5
V3 N005 0 3.3
V4 N003 0 0.88
R15 IN N010 40.2K
R19 0 N010 11.8K
R16 OUT1 N012 84.5K
R17 0 N012 11.8K
R18 OUT2 N014 84.5K
R20 0 N014 11.8K
R21 OUT3 N016 7.5K
R22 0 N016 1.69K
R5 OUT4 N018 1.62K
R6 0 N018 3.09K
C4 OUT3 0 10
R7 OUT3 0 8
C5 OUT2 0 10
R8 OUT2 0 8
C6 OUT1 0 10
R9 OUT1 0 8
V2 N007 0 5
R10 OUT4 N002 0.01
R11 OUT3 N006 0.01
R12 OUT2 N008 0.01
R13 OUT1 N009 0.01
S2 N001 N002 N004 0 Switch
V6 N004 0 1; PULSE(1 0 240m 10n 10n 12m 1400m)
M1 IN N011 N009 N009 AO6408
M2 N007 N013 N008 N008 AO6408
M3 N005 N015 N006 N006 AO6408
M4 N003 N017 N001 N001 AO6408
XU1 N012 N014 N016 N018 N011 N013 N015 N017 N028 N029 IN N032 0 NC_01 N030 N010 N031 NC_02 0 0 0 0 N026 N028 0 N019 N020 N021 N022 NC_03 N023 N024 N025 N027 NC_04 0 LTC2928 ;pnba V1)V2)V3)V4)EN1)EN2)EN3)EN4)_FLT)_Done)Vcc)PTMR)GND)RDIS)RTMR)ON)STMR)CAS)MS1)MS2)SQT1)SQT2)_RST)_OV)VSEL)RT1)RT2)RT3)RT4)REF)CMP1)CMP2)CMP3)CMP4)OVA)HVcc
C7 N030 0 10n
C8 N031 0 3.3n
R2 IN N019 42.2K
R14 IN N020 24.3K
R23 IN N028 10K
R24 IN N029 3.32K
R4 IN N021 9.53K
R25 IN N022 3.4K
R26 IN N023 10K
R27 IN N024 10K
R28 IN N025 10K
R29 IN N027 10K
R30 N002 N001 2.5
.tran 1000ms startup

* LTspice schematic (.asc)
Version 4
SHEET 1 2928 2176
WIRE -24 -1072 -88 -1072
WIRE 120 -1072 56 -1072
WIRE -1144 -944 -1464 -944
WIRE -88 -944 -88 -1072
WIRE -88 -944 -1048 -944
WIRE -24 -944 -88 -944
WIRE 120 -944 120 -1072
WIRE 120 -944 56 -944
WIRE 328 -944 120 -944
WIRE 1256 -944 408 -944
WIRE 1368 -944 1256 -944
WIRE 1464 -944 1368 -944
WIRE -1464 -928 -1464 -944
WIRE 1368 -928 1368 -944
WIRE 1464 -928 1464 -944
WIRE 88 -896 40 -896
WIRE 232 -896 168 -896
WIRE -8 -880 -8 -896
WIRE -1464 -832 -1464 -848
WIRE 1368 -832 1368 -864
WIRE 1464 -832 1464 -848
WIRE -1048 -768 -1464 -768
WIRE 328 -768 -952 -768
WIRE 1048 -768 408 -768
WIRE 1368 -768 1048 -768
WIRE 1464 -768 1368 -768
WIRE -1464 -752 -1464 -768
WIRE 1368 -752 1368 -768
WIRE 1464 -752 1464 -768
WIRE -1464 -656 -1464 -672
WIRE 1368 -656 1368 -688
WIRE 1464 -656 1464 -672
WIRE -952 -592 -1464 -592
WIRE 328 -592 -856 -592
WIRE 808 -592 408 -592
WIRE 1368 -592 808 -592
WIRE 1464 -592 1368 -592
WIRE -1464 -576 -1464 -592
WIRE 1368 -576 1368 -592
WIRE 1464 -576 1464 -592
WIRE -1464 -480 -1464 -496
WIRE 1368 -480 1368 -512
WIRE 1464 -480 1464 -496
WIRE -840 -432 -1464 -432
WIRE -824 -432 -840 -432
WIRE 328 -432 -728 -432
WIRE 632 -432 408 -432
WIRE 1368 -432 632 -432
WIRE 1464 -432 1368 -432
WIRE -1464 -416 -1464 -432
WIRE 1368 -416 1368 -432
WIRE 1464 -416 1464 -432
WIRE -840 -352 -840 -432
WIRE -472 -352 -840 -352
WIRE -408 -352 -472 -352
WIRE 56 -352 -408 -352
WIRE 328 -352 56 -352
WIRE -1464 -320 -1464 -336
WIRE 1368 -320 1368 -352
WIRE 1464 -320 1464 -336
WIRE -408 -288 -408 -352
WIRE -232 -256 -232 -304
WIRE 56 -256 56 -352
WIRE 632 -240 632 -432
WIRE -600 -192 -632 -192
WIRE -408 -192 -408 -208
WIRE -408 -192 -520 -192
WIRE -328 -192 -408 -192
WIRE 808 -144 808 -592
WIRE -744 -112 -744 -384
WIRE -328 -112 -744 -112
WIRE 632 -112 632 -160
WIRE 632 -112 152 -112
WIRE 664 -112 632 -112
WIRE 760 -112 744 -112
WIRE 1048 -64 1048 -768
WIRE -872 -32 -872 -544
WIRE -328 -32 -872 -32
WIRE 808 -32 808 -64
WIRE 808 -32 152 -32
WIRE 888 -32 808 -32
WIRE 1000 -32 968 -32
WIRE 1256 16 1256 -944
WIRE -968 48 -968 -720
WIRE -328 48 -968 48
WIRE 1048 48 1048 16
WIRE 1048 48 152 48
WIRE 1112 48 1048 48
WIRE 1208 48 1192 48
WIRE -1064 128 -1064 -896
WIRE -328 128 -1064 128
WIRE 1256 128 1256 96
WIRE 1256 128 152 128
WIRE 1352 128 1256 128
WIRE 1448 128 1432 128
WIRE -472 208 -472 -352
WIRE -440 208 -472 208
WIRE -328 208 -360 208
WIRE 216 208 152 208
WIRE -472 288 -472 208
WIRE -440 288 -472 288
WIRE -328 288 -360 288
WIRE 216 288 216 208
WIRE 216 288 152 288
WIRE -472 368 -472 288
WIRE -440 368 -472 368
WIRE -328 368 -360 368
WIRE 216 368 216 288
WIRE 216 368 152 368
WIRE -472 448 -472 368
WIRE -440 448 -472 448
WIRE -328 448 -360 448
WIRE 216 448 216 368
WIRE 216 448 152 448
WIRE 216 480 216 448
WIRE -472 528 -472 448
WIRE -440 528 -472 528
WIRE -328 528 -360 528
WIRE -472 608 -472 528
WIRE -440 608 -472 608
WIRE -328 608 -360 608
WIRE -472 688 -472 608
WIRE -440 688 -472 688
WIRE -328 688 -360 688
WIRE 216 688 152 688
WIRE 328 688 328 -352
WIRE 328 688 296 688
WIRE -472 768 -472 688
WIRE -440 768 -472 768
WIRE -328 768 -360 768
WIRE 184 768 152 768
WIRE 184 848 184 768
WIRE 184 848 152 848
WIRE 216 848 184 848
WIRE 328 848 328 688
WIRE 328 848 296 848
WIRE -328 928 -392 928
WIRE 216 928 152 928
WIRE 328 928 328 848
WIRE 328 928 296 928
WIRE -392 992 -392 928
WIRE -232 1008 -232 992
WIRE -136 1008 -136 992
WIRE -40 1008 -40 992
WIRE 56 1008 56 992
WIRE -232 1088 -232 1072
WIRE -136 1088 -136 1072
WIRE -40 1088 -40 1072
FLAG 56 1008 0
FLAG -40 1088 0
FLAG -1464 -320 0
FLAG -1464 -832 0
FLAG 1368 -832 0
FLAG 1464 -832 0
FLAG -632 -192 0
FLAG 760 -112 0
FLAG 1000 -32 0
FLAG 1208 48 0
FLAG 1448 128 0
FLAG 1368 -656 0
FLAG 1464 -656 0
FLAG 1368 -480 0
FLAG 1464 -480 0
FLAG 1368 -320 0
FLAG 1464 -320 0
FLAG -1464 -656 0
FLAG -1464 -480 0
FLAG 1464 -432 OUT1
FLAG 1464 -592 OUT2
FLAG 1464 -768 OUT3
FLAG 1464 -944 OUT4
FLAG -8 -880 0
FLAG 232 -896 0
FLAG -1464 -432 IN
FLAG -232 1088 0
FLAG -136 1088 0
FLAG -232 -304 0
FLAG 216 480 0
FLAG -392 992 0
SYMBOL cap 1352 -928 R0
SYMATTR InstName C1
SYMATTR Value 10
SYMBOL res 1448 -944 R0
SYMATTR InstName R1
SYMATTR Value 16
SYMBOL cap -56 1008 R0
SYMATTR InstName C3
SYMATTR Value 47n
SYMBOL res 312 672 R90
SYMATTR InstName R3
SYMATTR Value 10K
SYMBOL voltage -1464 -432 R0
SYMATTR Value 5
SYMATTR InstName V1
SYMBOL voltage -1464 -768 R0
SYMATTR InstName V3
SYMATTR Value 3.3
SYMBOL voltage -1464 -944 R0
SYMATTR InstName V4
SYMATTR Value 0.88
SYMBOL res -424 -304 R0
SYMATTR InstName R15
SYMATTR Value 40.2K
SYMBOL res -616 -208 M90
SYMATTR InstName R19
SYMATTR Value 11.8K
SYMBOL res 616 -256 R0
SYMATTR InstName R16
SYMATTR Value 84.5K
SYMBOL res 760 -128 R90
SYMATTR InstName R17
SYMATTR Value 11.8K
SYMBOL res 792 -160 R0
SYMATTR InstName R18
SYMATTR Value 84.5K
SYMBOL res 984 -48 R90
SYMATTR InstName R20
SYMATTR Value 11.8K
SYMBOL res 1032 -80 R0
SYMATTR InstName R21
SYMATTR Value 7.5K
SYMBOL res 1208 32 R90
SYMATTR InstName R22
SYMATTR Value 1.69K
SYMBOL res 1240 0 R0
SYMATTR InstName R5
SYMATTR Value 1.62K
SYMBOL res 1448 112 R90
SYMATTR InstName R6
SYMATTR Value 3.09K
SYMBOL cap 1352 -752 R0
SYMATTR InstName C4
SYMATTR Value 10
SYMBOL res 1448 -768 R0
SYMATTR InstName R7
SYMATTR Value 8
SYMBOL cap 1352 -576 R0
SYMATTR InstName C5
SYMATTR Value 10
SYMBOL res 1448 -592 R0
SYMATTR InstName R8
SYMATTR Value 8
SYMBOL cap 1352 -416 R0
SYMATTR InstName C6
SYMATTR Value 10
SYMBOL res 1448 -432 R0
SYMATTR InstName R9
SYMATTR Value 8
SYMBOL voltage -1464 -592 R0
SYMATTR InstName V2
SYMATTR Value 5
SYMBOL res 424 -960 R90
SYMATTR InstName R10
SYMATTR Value 0.01
SYMBOL res 424 -784 R90
SYMATTR InstName R11
SYMATTR Value 0.01
SYMBOL res 424 -608 R90
SYMATTR InstName R12
SYMATTR Value 0.01
SYMBOL res 424 -448 R90
SYMATTR InstName R13
SYMATTR Value 0.01
SYMBOL sw -40 -944 R270
SYMATTR InstName S2
SYMATTR Value Switch
SYMBOL voltage 72 -896 R270
SYMATTR InstName V6
SYMATTR Value 1; PULSE(1 0 240m 10n 10n 12m 1400m)
SYMBOL nmos -824 -384 R270
SYMATTR InstName M1
SYMATTR Value AO6408
SYMBOL nmos -952 -544 R270
SYMATTR InstName M2
SYMATTR Value AO6408
SYMBOL nmos -1048 -720 R270
SYMATTR InstName M3
SYMATTR Value AO6408
SYMBOL nmos -1144 -896 R270
SYMATTR InstName M4
SYMATTR Value AO6408
SYMBOL LTC2928 -88 368 R0
SYMATTR InstName U1
SYMBOL cap -248 1008 R0
SYMATTR InstName C7
SYMATTR Value 10n
SYMBOL cap -152 1008 R0
SYMATTR InstName C8
SYMATTR Value 3.3n
SYMBOL res -456 192 M90
SYMATTR InstName R2
SYMATTR Value 42.2K
SYMBOL res -456 272 M90
SYMATTR InstName R14
SYMATTR Value 24.3K
SYMBOL res 312 832 R90
SYMATTR InstName R23
SYMATTR Value 10K
SYMBOL res 312 912 R90
SYMATTR InstName R24
SYMATTR Value 3.32K
SYMBOL res -456 352 M90
SYMATTR InstName R4
SYMATTR Value 9.53K
SYMBOL res -456 432 M90
SYMATTR InstName R25
SYMATTR Value 3.4K
SYMBOL res -456 512 M90
SYMATTR InstName R26
SYMATTR Value 10K
SYMBOL res -456 592 M90
SYMATTR InstName R27
SYMATTR Value 10K
SYMBOL res -456 672 M90
SYMATTR InstName R28
SYMATTR Value 10K
SYMBOL res -456 752 M90
SYMATTR InstName R29
SYMATTR Value 10K
SYMBOL res 72 -1088 R90
SYMATTR InstName R30
SYMATTR Value 2.5