* SPICE netlist
R1 N017 N021 1K
C1 N021 0 3300p
C2 N020 0 270p
C3 N019 0 270p
R2 N018 N022 1K
C4 N022 0 3300p
MQ1 N011 N016 0 0 FDS6680A
L1 N011 N012 33
R3 N012 +5 50m
C5 +5 0 220 Rser=0.1 x2
D1 0 N011 1N5818
MQ2 N010 N015 0 0 FDS6680A
MQ3 N010 N005 IN IN FDC638P
L2 N010 N009 20
R4 N009 +3.3 50m
C6 +3.3 0 220 Rser=0.1 x2
D2 0 N010 1N5818
C7 N009 +3.3 1000p
Rload2 +5 0 5
Rload1 +3.3 0 5
V1 IN 0 25
MQ4 N011 N006 IN IN FDC638P
XU1 MP_01 IN N003 N005 N007 N015 0 N001 N019 N017 0 N013 +3.3 N009 N018 N020 +5 N012 N014 0 N001 0 N016 N008 N006 N004 N002 +5 LTC1267 ;pnba )Vin)CAP3)P-gate3)P-drive3)N-gate3)PGND3)Vcc3)Ct3)Ith3)SGND3)SHDN3)Sense-3)Sense+3)Ith5)Ct5)Sense-5)Sense+5)SHDN5)SGND5)Vcc5)PGND5)N-gate5)P-drive5)P-gate5)CAP5)MSHDN)EXTVcc
C8 N006 N008 .1
C9 N001 N004 .15
C10 N001 0 3.3
C11 N001 0 3.3
C12 N005 N007 .1
C13 N012 +5 1000p
C14 N001 N003 .15
.tran 1.2m

* LTspice schematic (.asc)
Version 4
SHEET 1 2048 928
WIRE -608 -464 -736 -464
WIRE 64 -464 -608 -464
WIRE 688 -464 64 -464
WIRE -736 -448 -736 -464
WIRE 928 -448 224 -448
WIRE -416 -432 -512 -432
WIRE -256 -432 -416 -432
WIRE 384 -432 -256 -432
WIRE 496 -432 384 -432
WIRE 608 -432 496 -432
WIRE -512 -416 -512 -432
WIRE 608 -416 608 -432
WIRE -416 -384 -416 -432
WIRE 496 -384 496 -432
WIRE -256 -368 -256 -432
WIRE -96 -368 -96 -400
WIRE 64 -368 64 -464
WIRE 224 -368 224 -448
WIRE 384 -368 384 -432
WIRE -736 -352 -736 -368
WIRE -512 -336 -512 -352
WIRE 608 -336 608 -352
WIRE -416 -288 -416 -320
WIRE -336 -288 -416 -288
WIRE 496 -288 496 -320
WIRE 496 -288 464 -288
WIRE -608 -224 -608 -464
WIRE 688 -224 688 -464
WIRE -416 -208 -560 -208
WIRE -336 -208 -416 -208
WIRE 496 -208 464 -208
WIRE 640 -208 496 -208
WIRE -416 -128 -416 -144
WIRE -336 -128 -416 -128
WIRE 496 -128 496 -144
WIRE 496 -128 464 -128
WIRE -848 -96 -864 -96
WIRE -752 -96 -768 -96
WIRE -736 -96 -752 -96
WIRE -608 -96 -608 -128
WIRE -608 -96 -656 -96
WIRE 688 -96 688 -128
WIRE 720 -96 688 -96
WIRE 816 -96 800 -96
WIRE 832 -96 816 -96
WIRE 928 -96 928 -448
WIRE 928 -96 912 -96
WIRE -752 -48 -752 -96
WIRE -416 -48 -752 -48
WIRE -336 -48 -416 -48
WIRE 496 -48 464 -48
WIRE 816 -48 816 -96
WIRE 816 -48 496 -48
WIRE -864 32 -864 -96
WIRE -864 32 -1008 32
WIRE -416 32 -416 16
WIRE -416 32 -864 32
WIRE -336 32 -416 32
WIRE 496 32 496 16
WIRE 496 32 464 32
WIRE 928 32 928 -96
WIRE 928 32 496 32
WIRE 1024 32 928 32
WIRE -1008 48 -1008 32
WIRE -864 48 -864 32
WIRE 928 48 928 32
WIRE 1024 48 1024 32
WIRE -608 96 -608 -96
WIRE -608 96 -720 96
WIRE 688 96 688 -96
WIRE 832 96 688 96
WIRE -608 112 -608 96
WIRE -336 112 -368 112
WIRE 496 112 464 112
WIRE 688 112 688 96
WIRE -720 128 -720 96
WIRE 832 128 832 96
WIRE -1008 144 -1008 128
WIRE -864 144 -864 112
WIRE 928 144 928 112
WIRE 1024 144 1024 128
WIRE -336 192 -560 192
WIRE 640 192 464 192
WIRE 832 208 832 192
WIRE -720 224 -720 192
WIRE -608 224 -608 208
WIRE 688 224 688 208
WIRE -336 272 -416 272
WIRE 544 272 464 272
WIRE -416 288 -416 272
WIRE 544 288 544 272
WIRE -256 368 -256 352
WIRE -112 368 -112 352
WIRE 16 368 16 352
WIRE 112 368 112 352
WIRE 240 368 240 352
WIRE 384 368 384 352
WIRE -416 384 -416 368
WIRE 544 384 544 368
WIRE 16 448 16 432
WIRE 112 448 112 432
WIRE -416 464 -416 448
WIRE 544 464 544 448
FLAG 544 464 0
FLAG 384 368 0
FLAG 240 368 0
FLAG 112 448 0
FLAG 16 448 0
FLAG -112 368 0
FLAG -256 368 0
FLAG -416 464 0
FLAG 928 144 0
FLAG 688 224 0
FLAG 832 208 0
FLAG -864 144 0
FLAG -608 224 0
FLAG -720 224 0
FLAG 1024 144 0
FLAG -1008 144 0
FLAG -1008 32 +3.3
FLAG 1024 32 +5
FLAG -736 -352 0
FLAG 608 -336 0
FLAG -512 -336 0
FLAG -736 -464 IN
SYMBOL RES -432 272 R0
SYMATTR InstName R1
SYMATTR Value 1K
SYMBOL cap -432 384 R0
SYMATTR InstName C1
SYMATTR Value 3300p
SYMBOL cap 96 368 R0
SYMATTR InstName C2
SYMATTR Value 270p
SYMBOL cap 0 368 R0
SYMATTR InstName C3
SYMATTR Value 270p
SYMBOL res 528 272 R0
SYMATTR InstName R2
SYMATTR Value 1K
SYMBOL cap 528 384 R0
SYMATTR InstName C4
SYMATTR Value 3300p
SYMBOL NMOS 640 112 R0
SYMATTR InstName Q1
SYMATTR Value FDS6680A
SYMBOL ind 704 -80 R270
SYMATTR InstName L1
SYMATTR Value 33
SYMBOL res 816 -112 M90
SYMATTR InstName R3
SYMATTR Value 50m
SYMBOL polcap 912 48 R0
SYMATTR SpiceLine2 x2
SYMATTR Value 220
SYMATTR SpiceLine Rser=0.1
SYMATTR InstName C5
SYMBOL schottky 816 192 M180
SYMATTR InstName D1
SYMATTR Value 1N5818
SYMBOL NMOS -560 112 M0
SYMATTR InstName Q2
SYMATTR Value FDS6680A
SYMBOL PMOS -560 -128 R180
SYMATTR InstName Q3
SYMATTR Value FDC638P
SYMBOL ind -640 -80 M270
SYMATTR InstName L2
SYMATTR Value 20
SYMBOL res -752 -112 R90
SYMATTR InstName R4
SYMATTR Value 50m
SYMBOL polcap -880 48 R0
SYMATTR SpiceLine2 x2
SYMATTR Value 220
SYMATTR SpiceLine Rser=0.1
SYMATTR InstName C6
SYMBOL schottky -736 192 M180
SYMATTR InstName D2
SYMATTR Value 1N5818
SYMBOL cap -432 -48 R0
SYMATTR InstName C7
SYMATTR Value 1000p
SYMBOL res 1008 32 R0
SYMATTR InstName Rload2
SYMATTR Value 5
SYMBOL res -1024 32 R0
SYMATTR InstName Rload1
SYMATTR Value 5
SYMBOL VOLTAGE -736 -464 R0
SYMATTR InstName V1
SYMATTR Value 25
SYMBOL PMOS 640 -128 M180
SYMATTR InstName Q4
SYMATTR Value FDC638P
SYMBOL POWERPRODUCTS\\LTC1267 64 -48 R0
SYMATTR InstName U1
SYMBOL cap 480 -208 R0
SYMATTR InstName C8
SYMATTR Value .1
SYMBOL cap 480 -384 R0
SYMATTR InstName C9
SYMATTR Value .15
SYMBOL polcap 592 -416 R0
SYMATTR InstName C10
SYMATTR Value 3.3
SYMBOL polcap -528 -416 R0
SYMATTR InstName C11
SYMATTR Value 3.3
SYMBOL cap -432 -208 R0
SYMATTR InstName C12
SYMATTR Value .1
SYMBOL cap 480 -48 R0
SYMATTR InstName C13
SYMATTR Value 1000p
SYMBOL cap -432 -384 R0
SYMATTR InstName C14
SYMATTR Value .15