* Z:\home\khalils\Downloads\files\data\raw_asc\LT3570.asc
* Generated by LTspice 26.0.1 for Windows.
V1 IN 0 5
L1 IN N004 6.8
D1 N004 OUT1 1N5817
R1 OUT1 N006 143K
R2 N006 0 10K
C1 OUT1 0 10
C2 N008 0 .002
C3 N010 0 .001 Rser=22K
R3 N012 0 15.8K
D2 OUT2 N001 CMDSH2-3
D3 0 N002 B520C
L2 N002 OUT2 3.3
C4 N001 N002 .1
R4 OUT2 N003 32.4K
R5 N003 0 10.2K
C5 N005 0 .002
C6 N007 0 .001 Rser=22K
C7 OUT2 0 22
Q1 OUT2 N009 OUT3 0 2N3391A
R6 OUT3 N011 22.1K
R7 N011 0 10.2K
C8 OUT3 0 2.2
XU1 IN MP_01 N002 N004 0 MP_02 IN N008 N010 N006 IN IN IN MP_03 N012 MP_04 N005 N007 N003 N011 N009 IN MP_05 N001 LT3570 ;pnba Vin2))SW2)SW1)GND))Vin1)SS1)Vc1)FB1)_SHDN1)_SHDN2)_SHDN3))Rt))SS2)Vc2)FB2)FB3)NPN_Drv)Vin3))Boost
Rload1 OUT1 0 42
Rload2 OUT2 0 3.3
Rload3 OUT3 0 25
.model D D
.lib C:\users\khalils\AppData\Local\LTspice\lib\cmp\standard.dio
.model NPN NPN
.model PNP PNP
.lib C:\users\khalils\AppData\Local\LTspice\lib\cmp\standard.bjt
.tran 750u startup
* Library below included based on ModelFile attribute of instance XU1 (C:\users\khalils\AppData\Local\LTspice\lib\sym\PowerProducts\LT3570.asy)
.lib LT3570.sub
.backanno
.end

* LTspice schematic (.asc):
Version 4
SHEET 1 1080 760
WIRE -32 -144 -96 -144
WIRE 32 -144 -32 -144
WIRE 128 -144 32 -144
WIRE 208 -144 128 -144
WIRE 288 -144 208 -144
WIRE -96 -128 -96 -144
WIRE 128 -112 128 -144
WIRE 208 -112 208 -144
WIRE 288 -112 288 -144
WIRE 32 -48 32 -144
WIRE 48 -48 32 -48
WIRE 432 -48 368 -48
WIRE 480 -48 432 -48
WIRE 608 -48 544 -48
WIRE -96 -32 -96 -48
WIRE 432 -32 432 -48
WIRE 32 48 32 -48
WIRE 48 48 32 48
WIRE 432 48 432 32
WIRE 432 48 368 48
WIRE 480 48 432 48
WIRE 608 48 608 -48
WIRE 608 48 560 48
WIRE 704 48 608 48
WIRE 736 48 704 48
WIRE 816 48 736 48
WIRE 432 64 432 48
WIRE 736 64 736 48
WIRE 816 64 816 48
WIRE 608 80 608 48
WIRE -32 144 -32 -144
WIRE 32 144 32 48
WIRE 48 144 32 144
WIRE 400 144 368 144
WIRE 432 144 432 128
WIRE 736 160 736 128
WIRE 816 160 816 144
WIRE 400 176 400 144
WIRE 608 176 608 160
WIRE 608 176 400 176
WIRE 608 192 608 176
WIRE -288 240 -416 240
WIRE -208 240 -288 240
WIRE -128 240 -208 240
WIRE -32 240 -32 224
WIRE -32 240 -64 240
WIRE 48 240 -32 240
WIRE 400 240 368 240
WIRE 480 240 464 240
WIRE -416 256 -416 240
WIRE -288 256 -288 240
WIRE -208 256 -208 240
WIRE 608 288 608 272
WIRE 48 336 -16 336
WIRE 400 336 368 336
WIRE 480 336 464 336
WIRE -416 352 -416 336
WIRE -288 352 -288 320
WIRE -208 352 -208 336
WIRE -16 352 -16 336
WIRE -16 352 -208 352
WIRE -208 368 -208 352
WIRE 704 384 704 48
WIRE -48 432 -64 432
WIRE 48 432 16 432
WIRE 640 432 368 432
WIRE -208 464 -208 448
WIRE 704 496 704 480
WIRE 816 496 704 496
WIRE 912 496 816 496
WIRE 704 512 704 496
WIRE 816 512 816 496
WIRE 912 512 912 496
WIRE -48 528 -64 528
WIRE 48 528 16 528
WIRE 544 528 368 528
WIRE 160 608 160 592
WIRE 256 608 256 592
WIRE 544 608 544 528
WIRE 704 608 704 592
WIRE 704 608 544 608
WIRE 816 608 816 576
WIRE 912 608 912 592
WIRE 704 624 704 608
WIRE 160 704 160 688
WIRE 704 720 704 704
FLAG -96 -32 0
FLAG -208 464 0
FLAG -416 352 0
FLAG -288 352 0
FLAG -64 432 0
FLAG -64 528 0
FLAG 256 608 0
FLAG 160 704 0
FLAG -416 240 OUT1
FLAG -96 -144 IN
FLAG 432 144 0
FLAG 608 288 0
FLAG 480 240 0
FLAG 480 336 0
FLAG 816 160 0
FLAG 736 160 0
FLAG 816 48 OUT2
FLAG 704 720 0
FLAG 912 608 0
FLAG 816 608 0
FLAG 912 496 OUT3
SYMBOL voltage -96 -144 R0
SYMATTR InstName V1
SYMATTR Value 5
SYMBOL ind -48 128 R0
SYMATTR InstName L1
SYMATTR Value 6.8
SYMBOL schottky -64 224 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName D1
SYMATTR Value 1N5817
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL res -224 240 R0
SYMATTR InstName R1
SYMATTR Value 143K
SYMBOL res -224 352 R0
SYMATTR InstName R2
SYMATTR Value 10K
SYMBOL cap -304 256 R0
SYMATTR InstName C1
SYMATTR Value 10
SYMBOL cap 16 416 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C2
SYMATTR Value .002
SYMBOL cap 16 512 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
WINDOW 39 60 32 VTop 2
SYMATTR InstName C3
SYMATTR Value .001
SYMATTR SpiceLine Rser=22K
SYMBOL res 144 592 R0
SYMATTR InstName R3
SYMATTR Value 15.8K
SYMBOL schottky 544 -64 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 34 10 VTop 2
SYMATTR InstName D2
SYMATTR Value CMDSH2-3
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL schottky 416 128 M180
WINDOW 0 26 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D3
SYMATTR Value B520C
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL ind 464 64 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 5 56 VBottom 2
SYMATTR InstName L2
SYMATTR Value 3.3
SYMBOL cap 416 -32 R0
SYMATTR InstName C4
SYMATTR Value .1
SYMBOL res 592 64 R0
SYMATTR InstName R4
SYMATTR Value 32.4K
SYMBOL res 592 176 R0
SYMATTR InstName R5
SYMATTR Value 10.2K
SYMBOL cap 400 224 M90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C5
SYMATTR Value .002
SYMBOL cap 400 320 M90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
WINDOW 39 60 32 VTop 2
SYMATTR InstName C6
SYMATTR Value .001
SYMATTR SpiceLine Rser=22K
SYMBOL cap 720 64 R0
SYMATTR InstName C7
SYMATTR Value 22
SYMBOL npn 640 384 R0
SYMATTR InstName Q1
SYMATTR Value 2N3391A
SYMBOL res 688 496 R0
SYMATTR InstName R6
SYMATTR Value 22.1K
SYMBOL res 688 608 R0
SYMATTR InstName R7
SYMATTR Value 10.2K
SYMBOL cap 800 512 R0
SYMATTR InstName C8
SYMATTR Value 2.2
SYMBOL LT3570 208 240 R0
SYMATTR InstName U1
SYMBOL res -432 240 R0
SYMATTR InstName Rload1
SYMATTR Value 42
SYMBOL res 800 48 R0
SYMATTR InstName Rload2
SYMATTR Value 3.3
SYMBOL res 896 496 R0
SYMATTR InstName Rload3
SYMATTR Value 25
TEXT 864 736 Left 2 !.tran 750u startup