* Z:\tmp\asc_dec_bjh7r6w2\035ad3856711_Cube_Sat_Power_Supply_dec0.asc
* Generated by LTspice 26.0.1 for Windows.
R_Filter2 3.3V_Output_Voltage 0 1Mega
I3 N005 0 PULSE(0 .5 .5 .001 .001 1)
R_Filter1 3V_Output_Voltage 0 1Mega
XU3 N001 N003 N002 0 N003 level1 Avol=1Meg GBW=10Meg Vos=0 En=0 Enk=0 In=0 Ink=0 Rin=500Meg ;pnba In+)In-)V+)V-)OUT
C_Filter2 3.3V_Output_Voltage 0 1pico
XU1 N009 3V_OpAmp_Prefilter_Voltage N008 0 3V_OpAmp_Prefilter_Voltage level1 Avol=1Meg GBW=10Meg Vos=0 En=0 Enk=0 In=0 Ink=0 Rin=500Meg ;pnba In+)In-)V+)V-)OUT
D1 N010 N001 UMZ5_1N
I2 3.3V_Output_Voltage 0 PULSE(0 .5 .25 .01 .001 0.66)
.model D D
.lib C:\users\khalils\AppData\Local\LTspice\lib\cmp\standard.dio
* Library below included based on ModelFile attribute of instance XU3, XU1 (C:\users\khalils\AppData\Local\LTspice\lib\sym\OpAmps\UniversalOpAmp.asy)
.lib UniversalOpAmp1.lib
.backanno
.end

* LTspice schematic (.asc):
Version 4
SHEET 1 1560 680
WIRE 0 -736 0 -768
WIRE 0 -736 -160 -736
WIRE -160 -704 -160 -736
WIRE 576 -704 208 -704
WIRE 576 -640 576 -704
WIRE 976 -640 960 -640
WIRE 544 -624 480 -624
WIRE 624 -608 608 -608
WIRE 656 -608 624 -608
WIRE 768 -608 736 -608
WIRE 864 -608 768 -608
WIRE 1184 -608 960 -608
WIRE 0 -592 0 -736
WIRE 352 -592 0 -592
WIRE 544 -592 352 -592
WIRE 1184 -560 1184 -608
WIRE 768 -544 768 -608
WIRE 480 -528 480 -624
WIRE 624 -528 624 -608
WIRE 624 -528 480 -528
WIRE 576 -448 576 -576
WIRE 768 -448 768 -480
WIRE 1184 -448 1184 -496
WIRE 576 -368 208 -368
WIRE 0 -352 0 -592
WIRE 576 -304 576 -368
WIRE 976 -304 960 -304
WIRE 624 -272 608 -272
WIRE 656 -272 624 -272
WIRE 768 -272 736 -272
WIRE 864 -272 768 -272
WIRE 960 -272 960 -304
WIRE 960 -272 864 -272
WIRE 1184 -272 960 -272
WIRE 864 -224 864 -272
WIRE 1184 -224 1184 -272
WIRE 768 -208 768 -272
WIRE 624 -192 624 -272
WIRE 624 -192 480 -192
WIRE 576 -112 576 -240
WIRE 768 -112 768 -144
WIRE 864 -112 864 -144
WIRE 1184 -112 1184 -160
WIRE 656 -48 640 -48
WIRE 576 -16 208 -16
WIRE 576 32 576 -16
WIRE 976 32 960 32
WIRE 544 48 480 48
WIRE 640 64 640 -48
WIRE 640 64 608 64
WIRE 672 64 640 64
WIRE 784 64 752 64
WIRE 864 64 784 64
WIRE 960 64 960 32
WIRE 960 64 864 64
WIRE 1184 64 960 64
WIRE 544 80 352 80
WIRE 864 112 864 64
WIRE 480 128 480 48
WIRE 640 128 640 64
WIRE 640 128 480 128
WIRE 784 128 784 64
WIRE 480 144 480 128
WIRE -160 240 -160 -640
WIRE 480 240 480 224
WIRE 576 240 576 96
WIRE 784 240 784 192
WIRE 864 240 864 192
SYMBOL res 848 -240 R0
SYMATTR InstName R_Filter2
SYMATTR Value 1Mega
SYMBOL load 1168 -560 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName I3
SYMATTR Value PULSE(0 .5 .5 .001 .001 1)
SYMBOL res 848 96 R0
SYMATTR InstName R_Filter1
SYMATTR Value 1Mega
SYMBOL OpAmps\\UniversalOpAmp 576 -608 R0
SYMATTR InstName U3
SYMBOL cap 752 -208 R0
SYMATTR InstName C_Filter2
SYMATTR Value 1pico
SYMBOL OpAmps\\UniversalOpAmp 576 64 R0
SYMATTR InstName U1
SYMBOL zener -144 -640 R180
WINDOW 0 24 64 Left 2
WINDOW 3 24 0 Left 2
SYMATTR InstName D1
SYMATTR Value UMZ5_1N
SYMBOL load 1168 -224 R0
WINDOW 123 0 0 Left 0
WINDOW 39 0 0 Left 0
SYMATTR InstName I2
SYMATTR Value PULSE(0 .5 .25 .01 .001 0.66)
FLAG 576 240 0
FLAG 480 240 0
FLAG 784 240 0
FLAG 864 240 0
FLAG 976 32 3V_Output_Voltage
FLAG 656 -48 3V_OpAmp_Prefilter_Voltage
FLAG 768 -448 0
FLAG 768 -112 0
FLAG 864 -112 0
FLAG 1184 -112 0
FLAG 1184 -448 0
FLAG 576 -448 0
FLAG 576 -112 0
FLAG 480 -448 0
FLAG 480 -112 0
FLAG 976 -304 3.3V_Output_Voltage
FLAG 976 -640 5V_Output_Voltage