* SPICE netlist
C1 N021 0 .01
C2 N022 0 100p
C3 N023 0 .01
MQ1 IN N010 N011 N011 Si4410DY
MQ2 N011 N014 0 0 Si4410DY
L1 N011 N012 10
D1 0 N011 1N5818
R1 N012 OUT2 .03
C4 N002 N011 .1
D2 N001 N002 1N5818
D3 N001 N005 1N5818
MQ3 IN N007 N009 N009 Si4410DY
MQ4 N009 N013 0 0 Si4410DY
L2 N009 N008 10
D4 0 N009 1N5818
R2 N008 OUT1 .03
C5 N005 N009 .1
C6 OUT1 0 220
C7 OUT2 0 220
R3 N020 0 10K
C8 N018 N020 1000p
C9 N020 0 470p
R4 N019 0 10K
C10 N017 N019 1000p
C11 N019 0 470p
C12 N012 OUT2 1000p
C13 N008 OUT1 1000p
Rload1 0 OUT1 10
Rload2 0 OUT2 10
Q5 N006 N004 IN 0 2N2907
R7 N006 0 10K
R8 IN N004 1K
V1 IN 0 20
R9 N016 0 100K
R10 OUT2 N016 177K
C14 N006 0 1
XU1 N021 N008 OUT1 N001 N017 MP_01 N022 0 MP_02 MP_03 N015 N018 MP_04 N016 OUT2 N012 N023 N004 N006 OUT1 N002 N010 N011 MP_05 N003 N014 0 N001 N013 IN MP_06 N009 N007 N005 LTC1538-AUX ;pnba Run/SS1)Sense+1)Sense-1)Vprog1)Ith1))Cosc)SGND)))SFB1)Ith2))Vosense2)Sense-2)Sense+2)Run/SS2)AUXDR)AUXFB)AUXON)Boost2)TGL2)SW2))EXTVcc)BG2)PGND)INTVcc/5V)BG1)Vin))SW1)TGL1)Boost1
.tran 6.5m startup

* LTspice schematic (.asc)
Version 4
SHEET 1 2192 1120
WIRE -680 -560 -840 -560
WIRE -200 -560 -680 -560
WIRE 648 -560 -200 -560
WIRE 728 -560 648 -560
WIRE 872 -560 728 -560
WIRE -840 -544 -840 -560
WIRE -440 -496 -552 -496
WIRE 40 -496 -440 -496
WIRE 120 -496 40 -496
WIRE 520 -496 184 -496
WIRE 728 -496 728 -560
WIRE -840 -448 -840 -464
WIRE -552 -432 -552 -496
WIRE -200 -432 -200 -560
WIRE 40 -432 40 -496
WIRE 280 -432 280 -464
WIRE 872 -400 872 -560
WIRE -376 -352 -408 -352
WIRE 728 -352 728 -416
WIRE 728 -352 456 -352
WIRE 808 -352 728 -352
WIRE -680 -272 -680 -560
WIRE -552 -272 -552 -368
WIRE -376 -272 -552 -272
WIRE 872 -272 872 -304
WIRE 872 -272 456 -272
WIRE 984 -272 872 -272
WIRE 872 -256 872 -272
WIRE 984 -256 984 -272
WIRE -376 -192 -632 -192
WIRE 520 -192 520 -496
WIRE 520 -192 456 -192
WIRE 648 -192 648 -560
WIRE 872 -160 872 -176
WIRE 984 -160 984 -192
WIRE -936 -144 -952 -144
WIRE -824 -144 -856 -144
WIRE -680 -144 -680 -176
WIRE -680 -144 -824 -144
WIRE -552 -144 -552 -208
WIRE -552 -144 -680 -144
WIRE -680 -112 -680 -144
WIRE -552 -112 -552 -144
WIRE -376 -112 -552 -112
WIRE 600 -112 456 -112
WIRE -824 -96 -824 -144
WIRE 520 -64 520 -128
WIRE 648 -64 648 -96
WIRE 648 -64 520 -64
WIRE 808 -64 648 -64
WIRE 856 -64 808 -64
WIRE 968 -64 936 -64
WIRE -376 -32 -632 -32
WIRE 520 -32 520 -64
WIRE 520 -32 456 -32
WIRE 648 -32 648 -64
WIRE 808 -16 808 -64
WIRE -824 16 -824 -32
WIRE -680 16 -680 -16
WIRE -952 48 -952 -144
WIRE -616 48 -952 48
WIRE -376 48 -616 48
WIRE 600 48 456 48
WIRE 648 96 648 64
WIRE 808 96 808 48
WIRE -952 128 -1080 128
WIRE -616 128 -616 112
WIRE -616 128 -952 128
WIRE -408 128 -408 -352
WIRE -408 128 -616 128
WIRE -376 128 -408 128
WIRE 520 128 456 128
WIRE 968 128 968 -64
WIRE 968 128 520 128
WIRE -1080 144 -1080 128
WIRE -952 144 -952 128
WIRE -376 208 -392 208
WIRE 520 208 520 192
WIRE 520 208 456 208
WIRE 968 208 520 208
WIRE -1080 240 -1080 224
WIRE -952 240 -952 208
WIRE -440 288 -440 -496
WIRE -376 288 -440 288
WIRE 744 288 456 288
WIRE 808 288 744 288
WIRE 968 288 968 208
WIRE 968 288 888 288
WIRE 1096 288 968 288
WIRE 744 304 744 288
WIRE 968 304 968 288
WIRE 1096 304 1096 288
WIRE -376 368 -472 368
WIRE 520 368 456 368
WIRE 744 400 744 384
WIRE 968 400 968 368
WIRE 1096 400 1096 384
WIRE -472 448 -472 432
WIRE -472 448 -600 448
WIRE 520 448 520 432
WIRE 648 448 520 448
WIRE -600 464 -600 448
WIRE -472 464 -472 448
WIRE -280 464 -280 448
WIRE -120 464 -120 448
WIRE 40 464 40 448
WIRE 200 464 200 448
WIRE 360 464 360 448
WIRE 520 464 520 448
WIRE 648 464 648 448
WIRE -280 544 -280 528
WIRE -120 544 -120 528
WIRE 360 544 360 528
WIRE -600 560 -600 528
WIRE -472 560 -472 544
WIRE 520 560 520 544
WIRE 648 560 648 528
FLAG -120 544 0
FLAG 40 464 0
FLAG -280 544 0
FLAG 360 544 0
FLAG 200 464 0
FLAG 648 96 0
FLAG 808 96 0
FLAG -680 16 0
FLAG -824 16 0
FLAG -952 240 0
FLAG 968 400 0
FLAG 520 560 0
FLAG 648 560 0
FLAG -472 560 0
FLAG -600 560 0
FLAG -1080 240 0
FLAG 1096 400 0
FLAG 872 -160 0
FLAG -840 -448 0
FLAG 744 400 0
FLAG 984 -160 0
FLAG -1080 128 OUT1
FLAG 1096 288 OUT2
FLAG -840 -560 IN
SYMBOL cap -296 464 R0
SYMATTR InstName C1
SYMATTR Value .01
SYMBOL cap -136 464 R0
SYMATTR InstName C2
SYMATTR Value 100p
SYMBOL cap 344 464 R0
SYMATTR InstName C3
SYMATTR Value .01
SYMBOL NMOS 600 -192 R0
SYMATTR InstName Q1
SYMATTR Value Si4410DY
SYMBOL nmos 600 -32 R0
SYMATTR InstName Q2
SYMATTR Value Si4410DY
SYMBOL ind 840 -48 R270
SYMATTR InstName L1
SYMATTR Value 10
SYMBOL schottky 792 48 M180
SYMATTR InstName D1
SYMATTR Value 1N5818
SYMBOL RES 952 112 R0
SYMATTR InstName R1
SYMATTR Value .03
SYMBOL cap 504 -192 R0
SYMATTR InstName C4
SYMATTR Value .1
SYMBOL schottky 120 -480 R270
SYMATTR InstName D2
SYMATTR Value 1N5818
SYMBOL schottky -568 -432 R0
SYMATTR Value 1N5818
SYMATTR InstName D3
SYMBOL nmos -632 -272 M0
SYMATTR InstName Q3
SYMATTR Value Si4410DY
SYMBOL nmos -632 -112 M0
SYMATTR InstName Q4
SYMATTR Value Si4410DY
SYMBOL ind -840 -128 M270
SYMATTR InstName L2
SYMATTR Value 10
SYMBOL schottky -840 -32 M180
SYMATTR InstName D4
SYMATTR Value 1N5818
SYMBOL res -968 32 R0
SYMATTR InstName R2
SYMATTR Value .03
SYMBOL cap -568 -272 R0
SYMATTR InstName C5
SYMATTR Value .1
SYMBOL polcap -968 144 R0
SYMATTR InstName C6
SYMATTR Value 220
SYMBOL polcap 952 304 R0
SYMATTR InstName C7
SYMATTR Value 220
SYMBOL res 504 448 R0
SYMATTR InstName R3
SYMATTR Value 10K
SYMBOL cap 504 368 R0
SYMATTR InstName C8
SYMATTR Value 1000p
SYMBOL cap 632 464 R0
SYMATTR InstName C9
SYMATTR Value 470p
SYMBOL res -488 448 R0
SYMATTR InstName R4
SYMATTR Value 10K
SYMBOL cap -488 368 R0
SYMATTR InstName C10
SYMATTR Value 1000p
SYMBOL cap -616 464 R0
SYMATTR InstName C11
SYMATTR Value 470p
SYMBOL cap 504 128 R0
SYMATTR InstName C12
SYMATTR Value 1000p
SYMBOL cap -632 48 R0
SYMATTR InstName C13
SYMATTR Value 1000p
SYMBOL res -1096 240 M180
SYMATTR InstName Rload1
SYMATTR Value 10
SYMBOL res 1080 400 M180
SYMATTR InstName Rload2
SYMATTR Value 10
SYMBOL PNP 808 -304 M180
SYMATTR InstName Q5
SYMATTR Value 2N2907
SYMBOL res 856 -272 R0
SYMATTR InstName R7
SYMATTR Value 10K
SYMBOL res 712 -512 R0
SYMATTR InstName R8
SYMATTR Value 1K
SYMBOL VOLTAGE -840 -560 R0
SYMATTR InstName V1
SYMATTR Value 20
SYMBOL RES 728 288 R0
SYMATTR InstName R9
SYMATTR Value 100K
SYMBOL RES 904 272 R90
SYMATTR InstName R10
SYMATTR Value 177K
SYMBOL polcap 968 -256 R0
SYMATTR InstName C14
SYMATTR Value 1
SYMBOL POWERPRODUCTS\\LTC1538-AUX 40 -32 R0
SYMATTR InstName U1