* Z:\home\khalils\Downloads\files\data\raw_asc\LTC4251-1.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\LTC4251-1.asy)
R7 N002 IN 34.8K
R4 0 N002 442K
Rload 0 OUT 50
R3 N007 N006 22
R6 N007 IN 20m
C5 0 OUT 100
C3 N008 IN 22n
D1 N006 N004 BZX84C36
C1 N002 IN 10n
R1 0 N001 10K
C4 N001 IN 1
R5 0 N004 31.6K
R2 N003 N008 10
XU1 N006 IN N001 N005 N002 N003 LTC4251-1 ;pnba Sense)Vee)Vin)Timer)UV/OV)Gate
M1 OUT N003 N007 N007 IRF530
V1 IN 0 PWL(0 0 1m 0 1.001m -48 220m -48 221m -70)
C2 N005 IN 220n
.model D D
.lib C:\users\khalils\AppData\Local\LTspice\lib\cmp\standard.dio
.model NMOS NMOS
.model PMOS PMOS
.lib C:\users\khalils\AppData\Local\LTspice\lib\cmp\standard.mos
.tran 400m
.model BZX84C36 D(IS=110.88E-18 N=.92657 RS=.85899 IKF=149.75 CJO=18.666E-12 M=.36733 VJ=.74368 ISR=42.919E-12 BV=36.134 IBV=.37878 TT=810.79E-9)
.lib LTC4251-1.sub
.backanno
.end

* LTspice schematic (.asc):
Version 4
SHEET 1 4692 2996
WIRE 2528 1744 2528 1728
WIRE 2672 1744 2672 1728
WIRE 1968 1760 1968 1728
WIRE 1456 1808 1456 1728
WIRE 2192 1824 2192 1728
WIRE 2528 1840 2528 1808
WIRE 2672 1840 2672 1824
WIRE 2672 1840 2528 1840
WIRE 2816 1840 2672 1840
WIRE 1968 1872 1968 1840
WIRE 1968 1872 1632 1872
WIRE 2528 1872 2528 1840
WIRE 1968 1888 1968 1872
WIRE 832 1936 832 1728
WIRE 1456 1952 1456 1888
WIRE 1568 1952 1456 1952
WIRE 1776 1952 1568 1952
WIRE 2432 1952 2160 1952
WIRE 2480 1952 2432 1952
WIRE 1632 1984 1632 1872
WIRE 2432 1984 2432 1952
WIRE 2192 2000 2192 1904
WIRE 1456 2096 1456 1952
WIRE 1696 2096 1680 2096
WIRE 1776 2096 1760 2096
WIRE 2192 2096 2192 2064
WIRE 2192 2096 2160 2096
WIRE 2320 2096 2192 2096
WIRE 2528 2096 2528 1968
WIRE 2528 2096 2400 2096
WIRE 1568 2112 1568 1952
WIRE 2528 2128 2528 2096
WIRE 2432 2144 2432 2064
WIRE 832 2256 832 2016
WIRE 1456 2256 1456 2176
WIRE 1456 2256 832 2256
WIRE 1568 2256 1568 2176
WIRE 1568 2256 1456 2256
WIRE 1632 2256 1632 2048
WIRE 1632 2256 1568 2256
WIRE 1680 2256 1680 2096
WIRE 1680 2256 1632 2256
WIRE 1968 2256 1968 2160
WIRE 1968 2256 1680 2256
WIRE 2432 2256 2432 2208
WIRE 2432 2256 1968 2256
WIRE 2528 2256 2528 2208
WIRE 2528 2256 2432 2256
SYMBOL res 2176 1808 R0
SYMATTR InstName R5
SYMATTR Value 31.6K
SYMBOL cap 1552 2112 R0
SYMATTR InstName C1
SYMATTR Value 10n
SYMBOL zener 2208 2064 R180
WINDOW 0 -35 66 Left 2
WINDOW 3 -113 0 Left 2
SYMATTR InstName D1
SYMATTR Value BZX84C36
SYMATTR Description Diode
SYMATTR Type diode
SYMBOL cap 2416 2144 R0
SYMATTR InstName C3
SYMATTR Value 22n
SYMBOL res 2656 1728 R0
SYMATTR InstName Rload
SYMATTR Value 50
SYMBOL res 1440 1792 R0
SYMATTR InstName R4
SYMATTR Value 442K
SYMBOL nmos 2480 1872 R0
WINDOW 0 101 14 Right 2
WINDOW 3 140 76 Right 2
SYMATTR InstName M1
SYMATTR Value IRF530
SYMBOL cap 1616 1984 R0
SYMATTR InstName C4
SYMATTR Value 1
SYMBOL res 2416 1968 R0
SYMATTR InstName R2
SYMATTR Value 10
SYMBOL cap 2512 1744 R0
SYMATTR InstName C5
SYMATTR Value 100
SYMBOL voltage 832 2032 M180
WINDOW 3 24 16 Left 2
WINDOW 39 24 -5 Left 2
WINDOW 0 24 96 Left 2
WINDOW 123 24 -26 Left 2
SYMATTR Value PWL(0 0 1m 0 1.001m -48 220m -48 221m -70)
SYMATTR InstName V1
SYMBOL cap 1760 2080 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C2
SYMATTR Value 220n
SYMBOL res 2416 2080 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R3
SYMATTR Value 22
SYMBOL LTC4251-1 1968 2016 R0
SYMATTR InstName U1
SYMBOL res 1440 2080 R0
SYMATTR InstName R7
SYMATTR Value 34.8K
SYMBOL res 2544 2112 M0
WINDOW 0 -38 37 Left 2
WINDOW 3 -56 78 Left 2
SYMATTR InstName R6
SYMATTR Value 20m
SYMBOL res 1952 1744 R0
SYMATTR InstName R1
SYMATTR Value 10K
FLAG 2816 1840 OUT
FLAG 832 2256 IN
FLAG 832 1728 0
FLAG 1456 1728 0
FLAG 1968 1728 0
FLAG 2192 1728 0
FLAG 2528 1728 0
FLAG 2672 1728 0
TEXT 2656 2104 Left 2 !.tran 400m
TEXT 744 2336 Left 2 !.model BZX84C36 D(IS=110.88E-18 N=.92657 RS=.85899 IKF=149.75 CJO=18.666E-12 M=.36733 VJ=.74368 ISR=42.919E-12 BV=36.134 IBV=.37878 TT=810.79E-9)