* Z:\home\khalils\Downloads\files\data\raw_asc\LTC2953-2.asc
* Generated by LTspice 26.0.1 for Windows.
* External LDO "DC/DC"
* Library below included based on ModelFile attribute of instance XU1 (C:\users\khalils\AppData\Local\LTspice\lib\sym\SpecialFunctions\LTC2953-2.asy)
C3 N006 0 10n Rser=1K
C4 OUT 0 30
MQ3 N001 N002 OUT OUT IRF530
V2 N012 0 PWL(0 0 2.8 0 2.801 3.3 3 3.3 3.001 0 4 0 4.001 3.3 6 3.3 6.001 0 6.499 0 6.5 3.3 9 3.3 9.001 0 12.999 0 13 3.3 14 3.3 14.001 0 14.499 0 14.5 3.3)
R11 N005 N004 100K
C2 N014 0 1
G1 0 N006 N009 N011 0.01
R3 N008 0 196K
V4 N009 0 1
R2 N003 N008 23.2K
V1 IN 0 8.4
R13 N011 0 10K
MQ1 N016 N017 0 0 2N7002
XU1 0 N007 N016 N014 N012 IN N003 N008 N013 N010 N004 N015 LTC2953-2 ;pnba GND)VM)_KILL)PDT)_PB)VIN)UVLO)_PFI)_PFO)_RST)_EN)_INT
R6 N007 0 100K
C1 OUT 0 1
R8 OUT N010 100K
Rload OUT 0 100
D1 OUT N006 BZX84C15L
R10 OUT N015 100K
R4 IN N016 100K
V3 N017 0 PWL(0 0 15.999 0 16 5 17 5 17.001 0)
S1 0 N006 N001 0 SDHN
R5 IN N004 100K
R7 OUT N007 499K
R14 N002 N006 10
R12 OUT N011 23K
R1 IN N003 2150K
MQ2 N001 N005 IN IN FDS4435A
R9 OUT N013 100K
.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 20 startup
.model SDHN SW(Ron=1G Roff=0.1 Vt=0.5 Vh=-0.1)
.lib LTC2953-2.sub
.backanno
.end

* LTspice schematic (.asc):
Version 4
SHEET 1 1980 1876
WIRE -1056 -448 -1152 -448
WIRE -960 -448 -1056 -448
WIRE -688 -448 -960 -448
WIRE -512 -448 -688 -448
WIRE -352 -448 -512 -448
WIRE -176 -448 -256 -448
WIRE -48 -448 -176 -448
WIRE 240 -448 48 -448
WIRE 384 -448 240 -448
WIRE 464 -448 384 -448
WIRE 544 -448 464 -448
WIRE 656 -448 544 -448
WIRE 704 -448 656 -448
WIRE 816 -448 704 -448
WIRE -1152 -432 -1152 -448
WIRE -512 -432 -512 -448
WIRE -960 -416 -960 -448
WIRE 464 -416 464 -448
WIRE 704 -416 704 -448
WIRE 816 -416 816 -448
WIRE 240 -400 240 -448
WIRE -688 -384 -688 -448
WIRE 32 -384 32 -400
WIRE -1152 -336 -1152 -352
WIRE -960 -320 -960 -336
WIRE -832 -320 -960 -320
WIRE -512 -320 -512 -352
WIRE -512 -320 -544 -320
WIRE -432 -320 -512 -320
WIRE -336 -320 -336 -400
WIRE -336 -320 -352 -320
WIRE 464 -320 464 -352
WIRE 704 -320 704 -352
WIRE 816 -320 816 -336
WIRE -960 -288 -960 -320
WIRE 32 -288 32 -304
WIRE 240 -288 240 -336
WIRE 240 -288 32 -288
WIRE 240 -272 240 -288
WIRE -352 -208 -544 -208
WIRE -960 -176 -960 -208
WIRE -832 -176 -960 -176
WIRE 32 -176 32 -288
WIRE 32 -176 -112 -176
WIRE 240 -176 240 -208
WIRE 384 -176 384 -448
WIRE -960 -160 -960 -176
WIRE -112 -144 -112 -176
WIRE -176 -128 -176 -448
WIRE -160 -128 -176 -128
WIRE 32 -128 32 -176
WIRE 112 -112 80 -112
WIRE 240 -112 192 -112
WIRE -512 -96 -544 -96
WIRE -416 -96 -432 -96
WIRE -160 -80 -176 -80
WIRE -960 -64 -960 -80
WIRE 384 -64 384 -96
WIRE 384 -64 80 -64
WIRE 384 -48 384 -64
WIRE -832 -32 -1248 -32
WIRE -176 -32 -176 -80
WIRE -112 -32 -112 -64
WIRE -112 -32 -176 -32
WIRE -112 -16 -112 -32
WIRE 32 -16 32 -48
WIRE 544 0 544 -448
WIRE -512 16 -544 16
WIRE -416 16 -416 -96
WIRE -416 16 -432 16
WIRE 384 48 384 32
WIRE -352 96 -352 -208
WIRE 544 96 544 80
WIRE 544 96 -352 96
WIRE -912 112 -928 112
WIRE -832 112 -848 112
WIRE 544 112 544 96
WIRE -512 128 -544 128
WIRE -416 128 -416 16
WIRE -416 128 -432 128
WIRE -1056 176 -1056 -448
WIRE 544 208 544 192
WIRE -416 240 -416 128
WIRE 656 240 656 -448
WIRE 656 240 -416 240
WIRE -752 256 -752 240
WIRE -1056 288 -1056 256
WIRE -624 288 -624 240
WIRE -624 288 -1056 288
WIRE -1056 320 -1056 288
WIRE -864 400 -1008 400
WIRE -864 416 -864 400
WIRE -1056 448 -1056 416
WIRE -1248 512 -1248 -32
WIRE -864 512 -864 496
WIRE -1248 608 -1248 592
SYMBOL nmos -48 -400 R270
WINDOW 0 73 -6 VRight 2
WINDOW 3 -10 41 VLeft 2
SYMATTR InstName Q3
SYMATTR Value IRF530
SYMBOL sw -112 -48 M180
WINDOW 0 19 18 Left 2
WINDOW 3 9 104 Left 2
SYMATTR InstName S1
SYMATTR Value SDHN
SYMBOL res -336 -336 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R11
SYMATTR Value 100K
SYMBOL voltage 96 -112 R270
WINDOW 0 24 20 VLeft 2
WINDOW 3 24 96 VRight 2
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName V4
SYMATTR Value 1
SYMBOL res -1072 160 R0
SYMATTR InstName R4
SYMATTR Value 100K
SYMBOL res 16 -400 R0
SYMATTR InstName R14
SYMATTR Value 10
SYMBOL g 32 -144 M0
SYMATTR InstName G1
SYMATTR Value 0.01
SYMBOL cap 224 -272 R0
WINDOW 39 27 78 Left 2
SYMATTR SpiceLine Rser=1K
SYMATTR InstName C3
SYMATTR Value 10n
SYMBOL res 528 96 R0
SYMATTR InstName R6
SYMATTR Value 100K
SYMBOL res -416 112 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R10
SYMATTR Value 100K
SYMBOL voltage -864 400 R0
WINDOW 123 0 0 Left 2
WINDOW 39 0 0 Left 2
SYMATTR InstName V3
SYMATTR Value PWL(0 0 15.999 0 16 5 17 5 17.001 0)
SYMBOL res -976 -176 R0
SYMATTR InstName R3
SYMATTR Value 196K
SYMBOL res -976 -304 R0
SYMATTR InstName R2
SYMATTR Value 23.2K
SYMBOL res 368 -64 R0
SYMATTR InstName R13
SYMATTR Value 10K
SYMBOL cap 688 -416 R0
SYMATTR InstName C1
SYMATTR Value 1
SYMBOL voltage -1152 -448 R0
WINDOW 123 24 138 Left 2
WINDOW 39 24 117 Left 2
SYMATTR Value 8.4
SYMATTR InstName V1
SYMBOL cap 448 -416 R0
SYMATTR InstName C4
SYMATTR Value 30
SYMBOL res -976 -432 R0
SYMATTR InstName R1
SYMATTR Value 2150K
SYMBOL res -528 -448 R0
SYMATTR InstName R5
SYMATTR Value 100K
SYMBOL cap -848 96 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C2
SYMATTR Value 1
SYMBOL pmos -256 -400 M270
WINDOW 0 56 45 VTop 2
WINDOW 3 -14 72 VLeft 2
SYMATTR InstName Q2
SYMATTR Value FDS4435A
SYMBOL res -416 -112 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R8
SYMATTR Value 100K
SYMBOL res 368 -192 R0
SYMATTR InstName R12
SYMATTR Value 23K
SYMBOL voltage -1248 496 R0
WINDOW 123 24 138 Left 2
WINDOW 39 24 117 Left 2
SYMATTR Value PWL(0 0 2.8 0 2.801 3.3 3 3.3 3.001 0 4 0 4.001 3.3 6 3.3 6.001 0 6.499 0 6.5 3.3 9 3.3 9.001 0 12.999 0 13 3.3 14 3.3 14.001 0 14.499 0 14.5 3.3)
SYMATTR InstName V2
SYMBOL nmos -1008 320 M0
WINDOW 0 -4 38 Right 2
WINDOW 3 36 102 Right 2
SYMATTR InstName Q1
SYMATTR Value 2N7002
SYMBOL diode 224 -400 R0
SYMATTR InstName D1
SYMATTR Value BZX84C15L
SYMBOL res 800 -432 R0
SYMATTR InstName Rload
SYMATTR Value 100
SYMBOL res -416 0 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R9
SYMATTR Value 100K
SYMBOL LTC2953-2 -688 -96 R0
SYMATTR InstName U1
SYMBOL res 528 -16 R0
SYMATTR InstName R7
SYMATTR Value 499K
FLAG -1152 -336 0
FLAG -1152 -448 IN
FLAG -960 -64 0
FLAG 704 -320 0
FLAG 816 -320 0
FLAG 816 -448 OUT
FLAG -752 256 0
FLAG -1248 608 0
FLAG -1056 448 0
FLAG -864 512 0
FLAG 544 208 0
FLAG -928 112 0
FLAG 464 -320 0
FLAG 384 48 0
FLAG 240 -176 0
FLAG 32 -16 0
FLAG 240 -112 0
FLAG -112 -16 0
TEXT -336 688 Left 2 !.tran 20 startup
TEXT 240 -536 Right 2 ;External LDO "DC/DC"
TEXT -272 40 Left 2 !.model SDHN SW(Ron=1G Roff=0.1 Vt=0.5 Vh=-0.1)