* Z:\home\khalils\Downloads\files\data\raw_asc\LTC4278.asc
* Generated by LTspice 26.0.1 for Windows.
* Library below included based on ModelFile attribute of instance XU1 (C:\users\khalils\AppData\Local\LTspice\lib\sym\PowerProducts\LTC4278.asy)
XU1 0 NC_01 N003 0 N022 N009 N012 N015 0 NC_02 N019 N021 N006 N004 0 N017 N016 N013 N010 N007 0 N004 NC_03 IN 0 LTC4278 ;pnba SHDN)_T2PSE)RCLASS)VPORTN)SG)VCC)TON)ENDLY)SYNC)SFST)OSC)FB)VCMP)UVLO)SENSE-)SENSE+)CCMP)RCMP)PGDLY)PG)VNEG)PWRGD)_PWRGD)VPORTP)GND
C1 0 N016 .1
R6 N020 N021 33.8K
C9 OUT 0 150 x3
Q4 N008 N011 N014 0 2N2222
R3 N011 0 10K
MQ1 N001 N007 N017 N017 Si4490DY
C7 N011 N024 2.2n
R7 N018 N020 10
Rload OUT 0 1
R10 N003 0 30.9K
C2 0 N006 1.5n
R13 N004 IN 100K
K2 L4 L5 1
R8 N015 0 51K
MQ3 N002 N014 0 0 Si4466DY
C8 N008 0 1
C5 N009 0 10
D3 N018 N009 MMSD4148
C4 IN 0 22
R9 N012 0 100K
L2 N002 OUT 3.125 Rser=12m
L5 0 N024 1.5m Rser=1.5
R11 N013 0 1.225K
V1 IN 0 54
L3 0 N020 50 Rser=.215
L4 0 N023 1.5m Rser=1.5
C10 OUT 0 1
R5 N021 0 3.4K
L1 IN N001 200 Rser=.2
R1 IN N009 39K
C3 0 N019 47p
D2 N002 N005 BAT54
D1 0 N011 BAT54
Q2 0 N011 N014 0 2N2907
C6 N023 P001 .1
R4 N005 N008 47
R12 N010 0 50K
R2 N022 P001 330
R14 N017 0 .04
K1 L1 L2 L3 1
.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
.model NMOS NMOS
.model PMOS PMOS
.lib C:\users\khalils\AppData\Local\LTspice\lib\cmp\standard.mos
.tran 43m startup
.lib LTC4278.sub
.backanno
.end

* LTspice schematic (.asc):
Version 4
SHEET 1 2812 972
WIRE 432 -176 -144 -176
WIRE 512 -176 432 -176
WIRE 608 -176 512 -176
WIRE 688 -176 608 -176
WIRE 512 -160 512 -176
WIRE 944 -160 896 -160
WIRE 1056 -160 944 -160
WIRE 1136 -160 1056 -160
WIRE 608 -144 608 -176
WIRE 944 -144 944 -160
WIRE 1056 -144 1056 -160
WIRE 1136 -144 1136 -160
WIRE 112 -128 96 -128
WIRE 432 -128 432 -176
WIRE 432 -128 400 -128
WIRE 688 -128 688 -176
WIRE 768 -128 688 -128
WIRE 896 -128 896 -160
WIRE 896 -128 816 -128
WIRE 432 -96 432 -128
WIRE 512 -64 512 -80
WIRE 768 -48 688 -48
WIRE 896 -48 816 -48
WIRE 944 -48 944 -80
WIRE 1056 -48 1056 -80
WIRE 1136 -48 1136 -64
WIRE 896 -16 896 -48
WIRE 976 -16 896 -16
WIRE 1120 -16 976 -16
WIRE 16 0 -16 0
WIRE 112 0 96 0
WIRE 608 0 608 -64
WIRE 608 0 400 0
WIRE 976 0 976 -16
WIRE -144 32 -144 -176
WIRE 688 48 688 -48
WIRE 112 64 80 64
WIRE 432 64 432 -32
WIRE 432 64 400 64
WIRE 464 64 432 64
WIRE 976 80 976 64
WIRE 32 128 16 128
WIRE 112 128 96 128
WIRE 640 128 400 128
WIRE 976 176 976 160
WIRE 976 176 832 176
WIRE -144 192 -144 112
WIRE -96 192 -144 192
WIRE 112 192 -96 192
WIRE 416 192 400 192
WIRE 576 192 496 192
WIRE 832 192 832 176
WIRE 976 192 976 176
WIRE -96 208 -96 192
WIRE 1120 224 1120 -16
WIRE 912 240 896 240
WIRE 16 256 0 256
WIRE 112 256 96 256
WIRE 480 256 400 256
WIRE 576 256 560 256
WIRE 832 272 832 256
WIRE -96 288 -96 272
WIRE 976 304 976 288
WIRE 1072 304 976 304
WIRE -48 320 -64 320
WIRE 112 320 32 320
WIRE 416 320 400 320
WIRE 576 320 480 320
WIRE 976 320 976 304
WIRE 1120 336 1120 320
WIRE 688 352 688 144
WIRE 688 352 624 352
WIRE -144 368 -144 192
WIRE 688 368 688 352
WIRE 896 368 896 240
WIRE 912 368 896 368
WIRE 112 384 96 384
WIRE 624 384 624 352
WIRE 624 384 400 384
WIRE 976 432 976 416
WIRE 624 448 400 448
WIRE -144 480 -144 432
WIRE 624 480 624 448
WIRE 688 480 688 448
WIRE 688 480 624 480
WIRE 688 496 688 480
WIRE 0 512 -16 512
WIRE 112 512 64 512
WIRE 608 512 608 0
WIRE 608 512 400 512
WIRE -144 576 -144 560
WIRE -80 576 -144 576
WIRE 32 576 0 576
WIRE 112 576 32 576
WIRE 416 576 400 576
WIRE 624 576 560 576
WIRE 720 576 672 576
WIRE 800 576 784 576
WIRE 896 576 896 368
WIRE 896 576 800 576
WIRE -144 592 -144 576
WIRE 32 592 32 576
WIRE 624 592 624 576
WIRE 672 592 672 576
WIRE 800 592 800 576
WIRE 896 592 896 576
WIRE 256 640 256 624
WIRE -144 688 -144 672
WIRE 32 688 32 672
WIRE 624 688 624 672
WIRE 672 688 672 672
WIRE 800 688 800 672
WIRE 896 688 896 656
SYMBOL res 464 272 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R11
SYMATTR Value 1.225K
SYMBOL res 112 240 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R9
SYMATTR Value 100K
SYMBOL ind2 688 688 R180
WINDOW 0 -7 80 Right 2
WINDOW 3 -4 43 Right 2
SYMATTR InstName L5
SYMATTR Value 1.5m
SYMATTR Type ind
SYMATTR SpiceLine Rser=1.5
SYMBOL res 112 -16 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R10
SYMATTR Value 30.9K
SYMBOL res 960 64 R0
SYMATTR InstName R4
SYMATTR Value 47
SYMBOL res 784 576 R0
SYMATTR InstName R3
SYMATTR Value 10K
SYMBOL npn 912 192 R0
WINDOW 0 61 21 Left 2
WINDOW 3 55 64 Left 2
SYMATTR InstName Q4
SYMATTR Value 2N2222
SYMBOL ind2 752 -144 R0
WINDOW 0 -7 45 Right 2
WINDOW 3 -3 64 Right 2
SYMATTR InstName L1
SYMATTR Value 200
SYMATTR SpiceLine Rser=.2
SYMBOL cap -112 208 R0
SYMATTR InstName C5
SYMATTR Value 10
SYMBOL ind2 832 -32 R180
WINDOW 0 -7 71 Right 2
WINDOW 3 -5 43 Right 2
SYMATTR InstName L2
SYMATTR Value 3.125
SYMATTR SpiceLine Rser=12m
SYMBOL res 400 208 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R12
SYMATTR Value 50K
SYMBOL ind2 608 688 M180
WINDOW 0 -1 82 Right 2
WINDOW 3 -5 38 Right 2
SYMATTR InstName L4
SYMATTR Value 1.5m
SYMATTR Type ind
SYMATTR SpiceLine Rser=1.5
SYMBOL res 592 -48 M180
WINDOW 0 36 76 Left 2
WINDOW 3 36 40 Left 2
SYMATTR InstName R13
SYMATTR Value 100K
SYMBOL nmos 1072 224 R0
WINDOW 3 61 63 Left 2
WINDOW 0 57 11 Left 2
SYMATTR Value Si4466DY
SYMATTR InstName Q3
SYMBOL schottky 960 0 R0
SYMATTR InstName D2
SYMATTR Value BAT54
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL cap 416 -96 R0
SYMATTR InstName C4
SYMATTR Value 22
SYMBOL schottky 880 656 M180
WINDOW 0 34 66 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D1
SYMATTR Value BAT54
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL res -160 16 R0
SYMATTR InstName R1
SYMATTR Value 39K
SYMATTR Type r
SYMBOL cap 816 192 R0
WINDOW 3 26 54 Left 2
SYMATTR Value 1
SYMATTR InstName C8
SYMBOL nmos 640 48 R0
WINDOW 0 60 9 Left 2
WINDOW 3 61 71 Left 2
SYMATTR InstName Q1
SYMATTR Value Si4490DY
SYMBOL diode -160 432 M180
WINDOW 0 24 72 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D3
SYMATTR Value MMSD4148
SYMBOL cap 32 112 M90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C2
SYMATTR Value 1.5n
SYMBOL voltage 512 -176 R0
SYMATTR Value 54
SYMATTR InstName V1
SYMBOL res 16 576 R0
SYMATTR InstName R5
SYMATTR Value 3.4K
SYMBOL ind2 -128 688 R180
WINDOW 0 -10 83 Right 2
WINDOW 3 -3 36 Right 2
SYMATTR InstName L3
SYMATTR Value 50
SYMATTR Type ind
SYMATTR SpiceLine Rser=.215
SYMBOL pnp 912 416 M180
WINDOW 0 50 64 Left 2
WINDOW 3 46 34 Left 2
SYMATTR InstName Q2
SYMATTR Value 2N2907
SYMBOL res 672 352 R0
SYMATTR InstName R14
SYMATTR Value .04
SYMBOL cap 0 496 M90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C3
SYMATTR Value 47p
SYMBOL res 48 304 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R8
SYMATTR Value 51K
SYMBOL res 400 592 R270
WINDOW 0 32 56 VTop 2
WINDOW 3 0 56 VBottom 2
SYMATTR InstName R2
SYMATTR Value 330
SYMBOL res -96 560 M90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R6
SYMATTR Value 33.8K
SYMBOL PowerProducts\\LTC4278 256 224 R0
SYMATTR InstName U1
SYMBOL cap 928 -144 R0
WINDOW 3 41 36 Left 2
WINDOW 40 27 64 Left 2
SYMATTR Value 150
SYMATTR SpiceLine2 x3
SYMATTR InstName C9
SYMBOL cap 560 560 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C6
SYMATTR Value .1
SYMBOL res 1120 -160 R0
SYMATTR InstName Rload
SYMATTR Value 1
SYMBOL res -160 464 R0
SYMATTR InstName R7
SYMATTR Value 10
SYMBOL cap 480 304 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C1
SYMATTR Value .1
SYMBOL cap 784 560 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C7
SYMATTR Value 2.2n
SYMBOL cap 1040 -144 R0
SYMATTR InstName C10
SYMATTR Value 1
FLAG 512 -64 0
FLAG 1120 336 0
FLAG 832 272 0
FLAG 1056 -48 0
FLAG 944 -48 0
FLAG 1136 -48 0
FLAG 1136 -160 OUT
FLAG 896 688 0
FLAG 800 688 0
FLAG 976 432 0
FLAG 672 688 0
FLAG 96 384 0
FLAG -64 320 0
FLAG 0 256 0
FLAG -144 688 0
FLAG 32 688 0
FLAG 256 640 0
FLAG 16 128 0
FLAG -16 512 0
FLAG -96 288 0
FLAG 464 64 0
FLAG 576 192 0
FLAG 576 320 0
FLAG 576 256 0
FLAG 688 496 0
FLAG 624 688 0
FLAG 80 64 0
FLAG -16 0 0
FLAG 96 -128 0
FLAG 512 -176 IN
TEXT 792 -136 Bottom 2 !K1 L1 L2 L3 1
TEXT 1040 488 Left 2 !.tran 43m startup
TEXT 648 576 Bottom 2 !K2 L4 L5 1