* 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)
R3 N008 0 196K
MQ1 N016 N017 0 0 2N7002
S1 0 N006 N001 0 SDHN
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
R11 N005 N004 100K
Rload OUT 0 100
R9 OUT N013 100K
R4 IN N016 100K
V1 IN 0 8.4
R1 IN N003 2150K
V3 N017 0 PWL(0 0 15.999 0 16 5 17 5 17.001 0)
R8 OUT N010 100K
R12 OUT N011 23K
G1 0 N006 N009 N011 0.01
V4 N009 0 1
C1 OUT 0 1
R7 OUT N007 499K
MQ2 N001 N005 IN IN FDS4435A
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)
MQ3 N001 N002 OUT OUT IRF530
C2 N014 0 1
R14 N002 N006 10
R5 IN N004 100K
D1 OUT N006 BZX84C15L
R2 N003 N008 23.2K
R6 N007 0 100K
C3 N006 0 10n Rser=1K
C4 OUT 0 30
R10 OUT N015 100K
R13 N011 0 10K
.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 pmos -256 -400 M270
WINDOW 0 56 45 VTop 2
WINDOW 3 -14 72 VLeft 2
SYMATTR InstName Q2
SYMATTR Value FDS4435A
SYMBOL res -336 -336 R90
WINDOW 0 0 56 VBottom 2
WINDOW 3 32 56 VTop 2
SYMATTR InstName R11
SYMATTR Value 100K
SYMBOL res -528 -448 R0
SYMATTR InstName R5
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 res 800 -432 R0
SYMATTR InstName Rload
SYMATTR Value 100
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 -976 -432 R0
SYMATTR InstName R1
SYMATTR Value 2150K
SYMBOL res -976 -176 R0
SYMATTR InstName R3
SYMATTR Value 196K
SYMBOL res 528 -16 R0
SYMATTR InstName R7
SYMATTR Value 499K
SYMBOL cap 688 -416 R0
SYMATTR InstName C1
SYMATTR Value 1
SYMBOL diode 224 -400 R0
SYMATTR InstName D1
SYMATTR Value BZX84C15L
SYMBOL cap -848 96 R90
WINDOW 0 0 32 VBottom 2
WINDOW 3 32 32 VTop 2
SYMATTR InstName C2
SYMATTR Value 1
SYMBOL res 368 -192 R0
SYMATTR InstName R12
SYMATTR Value 23K
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 sw -112 -48 M180
WINDOW 0 19 18 Left 2
WINDOW 3 9 104 Left 2
SYMATTR InstName S1
SYMATTR Value SDHN
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 16 -400 R0
SYMATTR InstName R14
SYMATTR Value 10
SYMBOL nmos -1008 320 M0
WINDOW 0 -4 38 Right 2
WINDOW 3 36 102 Right 2
SYMATTR InstName Q1
SYMATTR Value 2N7002
SYMBOL nmos -48 -400 R270
WINDOW 0 73 -6 VRight 2
WINDOW 3 -10 41 VLeft 2
SYMATTR InstName Q3
SYMATTR Value IRF530
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 res -1072 160 R0
SYMATTR InstName R4
SYMATTR Value 100K
SYMBOL res 368 -64 R0
SYMATTR InstName R13
SYMATTR Value 10K
SYMBOL cap 224 -272 R0
WINDOW 39 27 78 Left 2
SYMATTR SpiceLine Rser=1K
SYMATTR InstName C3
SYMATTR Value 10n
SYMBOL cap 448 -416 R0
SYMATTR InstName C4
SYMATTR Value 30
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 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 528 96 R0
SYMATTR InstName R6
SYMATTR Value 100K
SYMBOL res -976 -304 R0
SYMATTR InstName R2
SYMATTR Value 23.2K
SYMBOL g 32 -144 M0
SYMATTR InstName G1
SYMATTR Value 0.01
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)