* Z:\home\khalils\Downloads\files\data\raw_asc\LTC4221.asc
* Generated by LTspice 26.0.1 for Windows.
R1 N003 IN2 4m
MQ1 N003 N006 OUT2 OUT2 IRF7413
R2 OUT2 N004 14.3K
R3 N004 0 5.11K
R4 OUT2 N007 10K
C1 N011 0 100n
C3 OUT2 0 100
Rload OUT2 0 .5
C2 N012 0 1n
MQ2 N001 N005 OUT1 OUT1 IRF7413
R5 N001 IN1 4m
V3 IN1 0 PWL(0 0 100u 3.3)
R6 OUT2 N010 20K
R7 N010 0 5.11K
R8 OUT2 N009 10K
C4 OUT1 0 100
Rload1 OUT1 0 .66
S2 0 OUT1 N002 0 Sload
V4 N002 0 PULSE(0 1 200m 10n 10n 10m 5)
V5 ON1 0 PWL(0 0 10m 0 +100n 3.3 + 300m 3.3 +100n .2 +20u .2 +100n 3.3)
XU1 ON1 IN1 N001 N005 N010 N009 N008 N012 N011 0 N007 N004 N006 N003 IN2 ON2 LTC4221 ;pnba On1)Vcc1)Sense1)Gate1)Fb1)Pwrgd1)_Fault)Filter)Timer)Gnd)Pwrgd2)Fb2)Gate2)Sense2)Vcc2)On2
V1 IN2 0 PWL(0 0 100u 2.5)
V6 ON2 0 PWL(0 0 10m 0 +100n 3.3)
.model NMOS NMOS
.model PMOS PMOS
.lib C:\users\khalils\AppData\Local\LTspice\lib\cmp\standard.mos
.tran 500m
.model Sload SW(Ron=1 Roff=1Meg Vt=.5 Vh=-.4)
* Library below included based on ModelFile attribute of instance XU1 (C:\users\khalils\AppData\Local\LTspice\lib\sym\PowerProducts\LTC4221.asy)
.lib LTC4221.sub
.backanno
.end

* LTspice schematic (.asc):
Version 4
SHEET 1 2284 1108
WIRE 160 -176 -848 -176
WIRE 176 -176 160 -176
WIRE 272 -176 256 -176
WIRE 304 -176 272 -176
WIRE 1344 -176 400 -176
WIRE 1440 -176 1344 -176
WIRE 1584 -176 1440 -176
WIRE -848 -160 -848 -176
WIRE 1344 -160 1344 -176
WIRE 1440 -160 1440 -176
WIRE 1584 -160 1584 -176
WIRE 1728 -144 1632 -144
WIRE 1728 -128 1728 -144
WIRE 1648 -96 1632 -96
WIRE -848 -64 -848 -80
WIRE 1344 -64 1344 -96
WIRE 1440 -64 1440 -80
WIRE 1584 -64 1584 -80
WIRE 1728 -16 1728 -48
WIRE 512 32 -848 32
WIRE 528 32 512 32
WIRE 624 32 608 32
WIRE 656 32 624 32
WIRE 944 32 752 32
WIRE 1072 32 944 32
WIRE 1152 32 1072 32
WIRE 1232 32 1152 32
WIRE 1344 32 1232 32
WIRE 1440 32 1344 32
WIRE -848 48 -848 32
WIRE 1344 48 1344 32
WIRE 1440 48 1440 32
WIRE 944 64 944 32
WIRE 1072 128 1072 32
WIRE 1232 128 1232 32
WIRE -848 144 -848 128
WIRE 1344 144 1344 112
WIRE 1440 144 1440 128
WIRE 944 160 944 144
WIRE 944 160 896 160
WIRE 160 176 160 -176
WIRE 272 176 272 -176
WIRE 384 176 384 -128
WIRE 512 176 512 32
WIRE 624 176 624 32
WIRE 736 176 736 80
WIRE 944 192 944 160
WIRE 48 256 -848 256
WIRE 896 256 896 160
WIRE 896 256 848 256
WIRE -848 272 -848 256
WIRE 944 288 944 272
WIRE 1152 288 1152 32
WIRE 48 336 -432 336
WIRE 1072 336 1072 208
WIRE 1072 336 848 336
WIRE -432 352 -432 336
WIRE -848 368 -848 352
WIRE 48 416 16 416
WIRE 1232 416 1232 208
WIRE 1232 416 848 416
WIRE -432 448 -432 432
WIRE 48 496 16 496
WIRE 1152 496 1152 368
WIRE 1152 496 848 496
WIRE 1152 512 1152 496
WIRE 272 592 272 576
WIRE 624 592 624 576
WIRE 1152 608 1152 592
WIRE 272 672 272 656
WIRE 624 672 624 656
FLAG 944 288 0
FLAG 272 672 0
FLAG -848 144 0
FLAG 1344 144 0
FLAG 1440 144 0
FLAG 624 672 0
FLAG 16 496 0
FLAG -848 -64 0
FLAG 1152 608 0
FLAG 1344 -64 0
FLAG 1440 -64 0
FLAG 1584 -64 0
FLAG 1648 -96 0
FLAG 1728 -16 0
FLAG -848 368 0
FLAG -432 448 0
FLAG 1440 -176 OUT1
FLAG 1440 32 OUT2
FLAG -848 -176 IN1
FLAG -848 32 IN2
FLAG -848 256 ON1
FLAG -432 336 ON2
SYMBOL res 624 16 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R1
SYMATTR Value 4m
SYMBOL nmos 656 80 R270
WINDOW 0 56 45 VTop 2
WINDOW 3 -10 75 VLeft 2
SYMATTR InstName Q1
SYMATTR Value IRF7413
SYMBOL res 928 48 R0
SYMATTR InstName R2
SYMATTR Value 14.3K
SYMBOL res 928 176 R0
SYMATTR InstName R3
SYMATTR Value 5.11K
SYMBOL res 1056 112 R0
SYMATTR InstName R4
SYMATTR Value 10K
SYMBOL cap 256 592 R0
WINDOW 3 26 54 Left 2
SYMATTR Value 100n
SYMATTR InstName C1
SYMBOL cap 1328 48 R0
SYMATTR InstName C3
SYMATTR Value 100
SYMBOL res 1424 32 R0
SYMATTR InstName Rload
SYMATTR Value .5
SYMBOL cap 608 592 R0
WINDOW 3 26 54 Left 2
SYMATTR Value 1n
SYMATTR InstName C2
SYMBOL nmos 304 -128 R270
WINDOW 0 56 45 VTop 2
WINDOW 3 -10 75 VLeft 2
SYMATTR InstName Q2
SYMATTR Value IRF7413
SYMBOL res 272 -192 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R5
SYMATTR Value 4m
SYMBOL voltage -848 -176 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V3
SYMATTR Value PWL(0 0 100u 3.3)
SYMBOL res 1136 272 R0
SYMATTR InstName R6
SYMATTR Value 20K
SYMBOL res 1136 496 R0
SYMATTR InstName R7
SYMATTR Value 5.11K
SYMBOL res 1216 112 R0
SYMATTR InstName R8
SYMATTR Value 10K
SYMBOL cap 1328 -160 R0
SYMATTR InstName C4
SYMATTR Value 100
SYMBOL res 1424 -176 R0
SYMATTR InstName Rload1
SYMATTR Value .66
SYMBOL sw 1584 -64 R180
WINDOW 0 -16 104 Right 2
WINDOW 3 -24 2 Right 2
SYMATTR InstName S2
SYMATTR Value Sload
SYMBOL voltage 1728 -144 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V4
SYMATTR Value PULSE(0 1 200m 10n 10n 10m 5)
SYMBOL voltage -848 256 R0
WINDOW 123 24 124 Left 2
WINDOW 39 24 152 Left 2
SYMATTR Value2 + 300m 3.3 +100n .2
SYMATTR SpiceLine +20u .2 +100n 3.3)
SYMATTR InstName V5
SYMATTR Value PWL(0 0 10m 0 +100n 3.3
SYMBOL LTC4221 448 352 R0
SYMATTR InstName U1
SYMBOL voltage -848 32 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V1
SYMATTR Value PWL(0 0 100u 2.5)
SYMBOL voltage -432 336 R0
WINDOW 123 0 0 Left 2
WINDOW 39 24 124 Left 2
SYMATTR InstName V6
SYMATTR Value PWL(0 0 10m 0 +100n 3.3)
TEXT 1368 648 Left 2 !.tran 500m
TEXT 408 744 Left 2 !.model Sload SW(Ron=1 Roff=1Meg Vt=.5 Vh=-.4)