EEVblog 1438 - The TOP 5 Jellybean Regulators & References

[@mikeselectricstuff]

I'd add LP295x for low-power applications

[@TheJasonjayB]

i believe you got interesting story about it

[@AlienRelics]

7:00

[@gregbrown9882]

The great Mike has spoken.

[@EEVblog]

Yep, video was already way too long.

[@lolaa2200]

@@EEVblog references should have been on separate one so you can cover the subject of regulator a little better imho.

[@jimreineri6166]

After spending the last three decades in the ethereal software world, in my retirement I have sensibly returned to the tangible world of electronics hardware. This series is exactly what I need. A perfect refresher. Also, it is comforting to see that most of these parts are the same as what I used a lifetime ago!

[@algorithminc.8850]

Takes me back - great series on these old 70's/80's chips. They made it easy to actually make something to sell - to start a company early (guitar effects/synthesizers). Many thanks - great channel. Cheers from Florida, USA

[@nameredacted1242]

KEEP ON ROLLING with more videos like this!!! Top transistors, top logic families, etc!!! Please!!! Such info is critical for inexperienced engineers! This is MUCH more important than teardown videos! Anyone can do a teardown video (less experienced comments on design), but very few on YT can present such knowledge as you do! So spend less of your resources on teardowns please, and more on engineering tutorials!

[@pyrokinetikrlz]

"It is just a zener diode, a resistor, an emitter-follower, some business (the other 20 transistors in very advanced configurations), and bob is your uncle! no worries" - Dave

[@mateoarv]

Trivial stuff for Dave hahah

[@urugulu1656]

if all you wanna do is show the basic working principle of the part that is a totally valid approach. also it would completely blow up the scope of this video to explain them. not to mention that all the protection features that the datasheet claims gotta be implemented somehow since the sure do not represent the inherent features of some semiconductor configuration....

[@kepeb1]

@@urugulu1656 Yea, I think it was pretty clear this was not a critique on the subject's scope. It was highlighting the endearing presentation style that Dave uses. Tell me you don't get it without telling me you don't get it.

[@DerVierteVersuch]

YESSS DAVE!!! Awesome idea, top jellybean components! Absolutely loved the op-amp one, keep them coming! You're a real treasure sir! 🙂

[@vasiliynkudryavtsev]

The jellybean series was quite useful, because new designers and hobbyists do not know much about established standard components. Please, continue this series to cover other fields. E.g. transistors, mosfets, interface chips, ADC/DAC.

[@Gunbudder]

These videos gave me so much clout in my lab. i'm a software guy, but even having a passing knowledge of standard parts got me a lot of street cred with the hardware guys. EEVBlog is probably responsible for me ever getting a job at all lol

[@brutester]

I had used a TL431 and a power transistor to make a very simple variable electronic load that self-compensates for the temperature.

[@CarlVanWormerAE7GD]

Stability is important! Remember . . . in the extreme case, lack of stability can apply the full input voltage to the output terminal. 12V input regulated (with stability) to 3.3V logic power can potentially blow up your logic chips in an unstable (or slipped scope probe) condition. Usually the highest tech (smallest device geometry, probably memory or MCU) part will act as a crowbar device to protect the rest of the parts on the board.

[@lor0the0fallen0angel]

Sorry for my English! At the moment, we have a PSU, which so noisy, some MOBO can't even boot with it. The noise can be seen an oscilloscope in 10V/DIV easily on the 12V rail.

[@guytech7310]

To protect expensive components from a bad regulator I use TVS (zener) with a PPTC fuse for voltage & current protection. if the Regulator exceeds the TVS limit, it clamps the voltage and the PPTC fuse limits the current to prevent the magic smoke genie. This can can also be used on the input (Source) side to protect against over voltage and reverse polarity on the regulator. FWIW: I never use linear regulators going from 12V (or higher) down to 3.3V\1.8V. I use simple switches which can operate with input supply voltages up to 60V (or 40V depending on which ones you use). Simple switchers can also supply a lot more current & are much more efficient. I use a PI filter on the output to address switching noise.

[@norbert.kiszka]

Thats why Im using zener diodes as protection. In case of overvoltage some zener diodes do open circuit and some of them will make short circuit. Im using this with at least two parallel zener diodes.

[@CarlVanWormerAE7GD]

@@guytech7310 Yes, I only use linear regulator for low-current applications. My stability warning also applies to switchers. An extreme case can be accidently activated if your probe shorts the feedback pin to ground . . . the output goes to maximum and things melt/smoke. Other user's comments about TVS or Zeners (which are "guaranteed to fail in short circuit mode") address my paranoid protection approach to address the stability failure mode.

[@urugulu1656]

@@guytech7310 well clearly you are putting every thing in a soldered shut tin can or you just dont have to deal with emc

[@wthornton7346]

This series is so helpful to the beginner and hobbiest. BIG THUMBS UP from the Old Dart.

[@BobDiaz123]

I had my electronics students built a half wave power supply with too small a filter capacitor. Then we added a 7405 voltage regulator. They could see about a 1 Volt peak to peak ripple on the input, but couldn't measure the output ripple because the noise was greater than the ripple. It was an impressive lab for my students. I love the 78xx regulators.

[@jessstuart7495]

The opamp in the LM431 isn't acting like a comparator switching its output on and off. It is acting like a linear high-gain differential amplifier with feedback.

[@shadow7037932]

I like these top 5 ones! Gives a good base for newbies to look in to with regards to some common parts.

[@chrisstorm7704]

Great video. It has rekindled my interest in building a 431 based crowbar circuit.

[@andymouse]

I learn my PPM's at 22:50 ! I love this jellybean series I hope for loads more....cheers !

[@FileFixer007]

Using TL431 with LM317/337 together is great for low noise and stable linear power supply. Only critical point to achive that is to right matching capacitors in PSU design.

[@jamess1787]

I finally feel like part of the community. "You have absolutely, guaranteed, heard of these." Success.

[@jamess1787]

LM317 fan speed controller, the best crude and run-away fan speed controller :D.

[@electroquests]

I just love this, "Jellybean Component series", thanks! Dave

[@christer8964]

Yes, more top 5 things: Top 5 useful beans, ..... As an young player I get drowned on all the specs when I try to select components. I really like how you highlight the most significant spec limits.

[@thiagoennes]

puolup is a very famous resistor manufacturer... I hear about puolup resistors ALL THE TIME.

[@andymouse]

Yep, their everywhere !

[@elma5123]

Brilliant. More of these great vids the better. I often only need small amounts of items at a time so jellybeaning is going to be a great way of bulking out an order to avoid extra P&P costs, almost free components if you want to look at it that way. 👍 Thanks.

[@hoofbags]

Hi Dave, love the channel. I built a variable voltage PSU, used it to charge a battery but it popped, magic smoke. Apparently, the work around is to insert a BY127 or similar between the output leg and positive output terminal of the PSU, being constructed.

[@christer8964]

I have notice that a lot of people pick up LM317 with around output current up to 1.2-1.5 A. But what most people seems to have is LM317 from China with much lower max output current. I have a bunch at 0.1A. Took me as an young player a while to realise.

[@footyshorts7048]

Fantastic series Mr Jones keep em coming! come-a-gutsa Verb. (Australian colloquialism) To be thrown off a moving object at high speed, arms and legs flailing, landing on a hard surface and sustaining multiple wounds and broken bones.

[@israelgiron9089]

Useful thank you for the explanation and comparing those.

[@PsiQ]

I've thrown in 2x the LM317 into every toolkit (parts, tools, breadboards,...) i made for our interns/students, but until now they all were too lazy to build it onto their breadboards and all used external lab power supplies for their different voltages 😅 Now thats fine for first setups looking for smoke, but i find it a lot nicer if you only hook up one supply.. but building a board without cross wiring all and building a ratsnest seems to be the starting hurdle.. which makes it extremely hard to then find the wiring errors and issues.

[@mbp1646]

I was a junior design engineering back in the 1980s and all if these parts were industry standard back then. It is staggering they are still being used.

[@danielegger6460]

The 1117 is everywhere in USB powered devices. You simply don't have the voltage margin to go from 5V to 3.3V with a regular linear regulator.

[@mrlazda]

TL431 Is used only in SMPS with primary side control, which are usually flyback or single transistor forward low power SMPS other topology usually use secondary control and they do not use TL431 (no need for it and optocoupler).

[@МаксимСасага]

Thanks a lot for this video series. It might be useful and very interesting to overview jellybean transistors. Maybe split in some categories like BJT, JFET etc.

[@PJFox-lo8pi]

Great info. And Dave always makes me laugh. Funny bloke! Thanks!

[@PrinceWesterburg]

29:53 - Circle and line drawn over Shunt Regulator circuit - Now I know how Prince got his logo!

[@randycarter2001]

I HAVE had the output of 7805's go into osculations when the load cap is open. I don't know if it was brand of chip or what. The output measured around 4v, if I remember right. The scope showed a large amount of noise on the 5v rail. I replaced the cap and everything started working right.

[@Broken_Yugo]

I've seen it to, didn't have a working scope at the time, but like you said replaced the first electrolytic on the 5V rail (which had an ESR of around 140 ohms) and the unit behaved again.

[@gordonwelcher9598]

You forgot to mention the tongue angle requirement when adjusting the LM4041.

[@Roanokekidstech]

Great series! Love hearing what you have to say

[@guytech7310]

Simple switchers like the LM2679 or LM2596, More amps, more efficient, higher supply voltages. At this point I only use Linear regulators for low power 3.3V\1.8V needs, or for very low power, ultra-low noise (ie ADC, LNA, precision voltage references). Issue with TL431 is possible drift from temperature, unless you use temperature compensated components. A lot of devices can be under significant temperature swings from 0C\32F to 50C\122F.

[@romancharak3675]

Could you please create an instructional video on how to use TL431 in our circuits, Dave? Might make a good Whiteboard video. Greetings from Canada.

[@kensmith5694]

There is a better way to do the SLA charger. It involves one LM7812, and a small signal PNP. The beauty is that it boosts the voltage when charging and then decreases it when in the "float" condition.

[@VolksTrieb]

Nice vid again thanks dave! Wow REF02. Saw that on a german site and used it for ADCs. Nice :)

[@micomrkaic]

Dave, will you do a video on top 5 jellybean transistors? It would be interesting.

[@BM-jy6cb]

I came a cropper with a 7915, not realising they also require a minimum output current to regulate properly.

[@BaconbuttywithCheese]

What would be considered best for 12V to 5V DC @ 500mA in the efficiency stakes these days? Emitting 3.5Watts on a 7805 is not pretty. Thank you!

[@रीध्दीशभिडे]

This series is really great. Can you do a video on jelly bean MOSFET's?

[@jaycee1980]

in short... 78xx, 79xx, LM317, LM337, LD1117, TL431 :)

[@marcinp.8108]

And what about good old ua723? 0.03ppm per C...

[@sunuk1915]

We found some stuff 78LXX as 2amp, 78MXX as 3amp

[@nassimkoubeissi5814]

the fixed regulator 78XX is the most successful regulator ever made been using it for years since I learned electronics I prefer Korean KIA semiconductors KIA7805A . (tasty! candy crush electronics 🎉 so many manufacturers omits alot of internal parts to reduce cost but this increases failures for microcontrollers chips in inbedded circuits . other great regulator LM317 the best ever ample designs done on this componet . if space on PCB doesn't matter u can design a regulator with discrete components that have very long span ( my adjustable voltage power supply uses lm317 with 2n3055 transistors with 15 years old and working perfectly.)

[@ninethirtyone4264]

No Switching regulators and no current regulators included? :

[@lejF88]

I've been looking for a mega-list of jellybean components. Is there one that is fairly up to date?

[@franticMflair]

btw: I still can see the number of up- and downvotes (1651 vs 29)

[@GnuReligion]

The LM4040/4041 does not appear to be a common part on Ali. Have tried the TL431 as a reference, but it is annoying to sacrifice 8mA or more to get it up 2.5V. The device is nicely temperature compensated, but the reference itself varies wildly from one device to another. Makes me wonder, what is the ACTUAL go-to economy low power, low cost, temp compensated, trimmable modern voltage reference?

[@RexxSchneider]

It's still the TL431A. Perhaps you had a bad batch, but all of the ones I've had seem to work cleanly with around 1mA cathode current, and I've not seen one outside of its specified voltage deviation of ±25mV. How much is "varies wildly" and what is "low-power" in your application?

[@jeremylister89]

🇬🇧 Where's the 3 pin 431 type which can regulate below 1V @ 100uA cathode current and withstand 16V and about 100mA? Wanted one for years for 1-10V light dimming protocol. Closest was OnSemiconductor NCP100, but that was limited to 7 volts and it has been withdrawn I believe. Most useful of you also want an accurate low impedance 'zener' below 1.25V. And..it's my birthday today! 🎂

[@guytech7310]

use 2 TL431 with a voltage difference of 1V between them, and use the low side TL431 as ground. Ie TL431 (A) at 3.3V and TL431 (B) at 2.3V = 1V difference, Then use TL431 (B) as your ground.

[@change_your_oil_regularly4287]

Never used a 78XX.... Maybe I need to break my cherry. I just make kwrap for myself so I just have a stack of lm317, lm337, lm338, ams1117-adj, ams1117-3.3, ams1117-5.0, ams1117-1.8, tl431, amc7135 (okay not a voltage reg) etc Comment for the alg

[@EEVblog]

Sacrilege!

[@uwezimmermann5427]

Why, why, why is the pinout reversed for the 7805 and the 78L05???

[@uwezimmermann5427]

Here in Sweden the dislike-button and the dislike-counter are still operational!

[@RexxSchneider]

I don't think it is. If you mean the TO-220 7805 versus the TO-92 78L05, then they can both be considered as IN - GND - OUT if you look at the TO-92 from its curved side. You can get small TO-92 heatsinks that can be screwed down with the flat side of the TO-92 downward, just as the TO-220 can be screwed down with the tab side downward. In those orientations, you have IN - GND - OUT for both devices.

[@VandalIO]

When is the next jelly bean video coming ? I’m interested in jelly bean vacuum tubes

[@4dirt2racer0]

??? whats the difference between + n - to the transistor?? does anybody have any idea about whats different between a 7800 series n the 7900 negative voltage series??

[@Электроника123-ы4н]

TL431 is a winner

[@MrGoatflakes]

Can I get it in Red Rocket? 🤔

[@mde9555]

22:50 please correct 10 ppm is not 0.01%

[@Directory1]

Yes more plz. Makes my life and job easier.

[@danej7335]

Dave, these JellyBean vids are GREAT, some of your JellyBeans were not common when I was new and studying to be an EE in the 70's they were more common when I went on to graduate study!!! Thanks

[@mikeselectricstuff]

I've seen 78xx regs oscillate with no output cap

[@robertbox5399]

I've seen 7805s oscillate when the output cap got the freezer spray treatment.

[@AlienRelics]

The circuit itself may require bypass caps.

[@Broken_Yugo]

I once saw a mid 1980s Japanese built 7805 in a Nintendo oscillate (best I could tell that was the problem anyway) with a failing output cap, it had a small ceramic right on the output and another electrolytic on that rail a few inches away, just the nearest electrolytic (so near that the 7805 cooked it) had gone high ESR and that was enough to get it going and cause weird video distortion.

[@Teukka72]

If my memory serves me right, 78xx and 79xx should have the ceremonial 0.1 µF decoupling cap from input to ground, and from output to ground, and preferrably have a properly sized and designed ground to avoid various issues.

[@EEVblog]

I might have seen one once, don't entirely recall. I experimented with that a few years back trying to make it happen for a video, couldn't do it. I always add the caps just in case.

[@Willy_Tepes]

This series is great Dave. Jellybeans are exactly what I find when desoldering old boards. Us poor electronic nerds thank you. No component shortage is gonna stop me. Next, jellybean microcontrollers?

[@D4no00]

do those even exist? I mean it all comes down to programming and companies such as Arduino tried to solve this problem of integration.

[@damny0utoobe]

@@D4no00 yes, 8051

[@ignaloidas]

STM32 and clones are probably the closest you can get to an industry standard microcontroller, and yet, we see what component shortage has done to that line.

[@damny0utoobe]

@@ignaloidas they're too modern to be jellybean

[@PainterVierax]

@@damny0utoobe and the now old stm32 F103 model is the only one quite a few times cloned, and rather poorly (even the GD32) when digging into advanced features and compatibility.

[@dreamcat4]

in terms of not needing to put smoothing caps on the output of some of these regulators... Steve (SDG Electronics) did a recent video exploring this. With some test boards and different regulators etc. adding excessive capacitance where they are not needed is not always "harmless"... it can actually made the performance worse in some cases. Recommended to watch his video (SDG #212)

[@EEVblog]

Will have to watch it. Yes, it's sometimes not that easy. Look at the TL431 stability app note linked in the description as a classic example. There is a unstable dead bad of capacitance values.

[@Buciasda33]

Quiescent Current will fuck you up if you're designing battery powered stuff with deep sleep and stuff. I had a 0.8uA Microcontroller + LCD and 8uA drained by the freaking regulator... which was not in use... The freaking thing drained 8uA from Output to GND... I spent so many days testing and programming and it was this stupid component...

[@kanadmainkar4601]

This series is very helpful! Please keep 'em coming!

[@robertbox5399]

Jellybean micros?

[@mvv175]

Thank you for the series

[@a85515711]

TOP 5 jellybean switching converter? I think 34063 will be in the list but I want to know MORE!

[@guytech7310]

LM2679 OR LM2596

[@AnalogueGround]

78 and 79 regulators have made power supply design so easy that they've overshadowed newer LDO and generally higher spec devices. Being around for so long and making life easy makes them worthy of nomination for the award for device of the century!

[@nameredacted1242]

NEVER depend on internal overtemperature shutdown (ALWAYS mount on sufficient heatsink to avoid the problem in the first hand)! Some of these kick in at 175°C TJ, etc. Ouch!!! And some datasheets clearly state "if you repeatedly activate the internal overtemp shutdown, you are degrading the chip"! And what will chip performance be right before shutdown???

[@tomcombe4813]

Yeah i always got the feeling that the protection circuits on these regulators couldn't be trusted. Thanks for confirming my suspicions!

[@artrock8175]

These "jellybean" lists are great! I hope to see a decent list of these in your video library. Thank you for posting! 🙏

[@bacphan7582]

without finishing video i know there will be 78xx IC, they are stupidly cheap

[@algorithminc.8850]

Oops ... I learned that if I correct my English by editing after you give a "heart by EEVblog" that I lose it. Thank you for the great series and cheers to you ...

[@piast99]

And a trap for young players - 79xx has different pinout than 78xx as well as Vin instead of GND on the tab. Don't ask how I know that.

[@0x8badf00d]

Did you also blow it up? :)

[@robertbox5399]

2 parts on the same heatsink....

[@krissolshaq4934]

Jellyvean switching regulators/pwm generators please! Great series btw.

[@mrlazda]

That is easy just any Unitrode part (now Texas instruments parts start with UC)

[@bobvines00]

Dave, these "top 5 jelly bean" component videos are very interesting and useful (& educational to us "young players," regardless of our ages). Also, the thumbs down function is still working at the moment (2123 EST, 18 Nov 2021), so _maybe_ the backlash had the desired effect?

[@thomasleerriem6872]

5:52 I can imagine Dave answering a question on his exam at the day on how a 7805 works. "Well it's just a zener, a resistor and an emitter-follower doing some business and Bob's your uncle".

[@Buciasda33]

Haha, good one.

[@gordonwelcher9598]

I would like to see a video on extreme components with unusual specs. I could do this myself but it is more entertaining to see Dave do it.

[@guytech7310]

How about that plasma rifle in the 40 watt range? -Terminator movie from 1984 (if you didn't get the reference)

[@luizdanielsantos]

Suggestion for video: Test Chinese LM117/L317 and LM78xx clones (Like AMS1117-X.Y, and others). Warning: Magic Smoke ahead...

[@TomLeg]

Typo at 22:50 : "10ppm = 0.01%; 100ppm = 0.01%" 10ppm should be 0.001% :-)

[@odindimartino597]

I think the LM723 is useful when we need a completely customizable regulator and I have a huge (old) stock on them

[@Teukka72]

Or the µA 723. I missed that one in the walkthrough.

[@PileOfEmptyTapes]

µA723 variations are quite common in older adjustable power supply designs. While not super easy to use and practical by modern standards, they are still good for low-noise supplies, beating even a bypassed LM317 and making it close to LT304x terrain.

[@WestCoastMole]

My favorite to. I used one to design a 1500 Volt Regulated Screen Grid Supply for a big mutha transmitting tube. As Aretha would say the supply is Rock Steady !

[@erichpwagner]

The zener reference inside the 723 tends to be a lot less noisy than bandgaps.

[@pioneer1943]

I love the series! Please continue it ;)

[@petersage5157]

Top 5 jellybean rectifiers next. (I can actually only think of 3 - 1N700x, 1N4148/1N914, and 1N5817. A discussion of the dizzying array of alternatives might help some of us understand why there are so many different devices designed to do only one thing in almost exactly the same way.) If you need LM79xx, be sure you have some electrolytic or tag tant capacitors handy, as these regulators require much more bypassy capacitance than their positive voltage counterparts for stable operation. On that note, I've noticed several designs using LM78XX and LM79xx that have the same capacitor values on both positive and negative rails, presumably for BOM consolidation.

[@EdgarsLS]

I've seen a 7809 regulator ran at 38 volts input voltage in a commercial product, and it held up fine for 10+ years, but the 7909 on the negative rail died, but still works for around 10 minutes until it goes open

[@KeritechElectronics]

I'd also add MC34063 and LM2596 for switching mode DC/DC converters, but that's a bit more complicated :)

[@tubastuff]

Yup, the National "Simple Switcher" IC family.

[@Jyonkun]

I still have the dislike option along with a counter... but you got a thumbs up from me. :)

[@laurencedarby9042]

Dislike counter is gone for me as of today.

[@PrinceWesterburg]

Don't forget the 78S05 which is the same but does 2w output

[@markburton3306]

35 years ago at college as a project the whole class had to build fixed voltage bench PSU’s. +12, -12 and 5 volts out. First time I’d used a 7805. Used it to power all sorts of kit over the years.

[@dhpbear2]

9:50 - I couldn't help but notice 'Energy harvesting' listed! Is this some wackesrs? :)

[@ulwur]

The 78xx is also remarkably quiet. Check out Marco Reps video, as quiet as a battery!

[@matthewbeasley7765]

One other 1970 era part I'm glad you mentioned is the TL431. It was designed as a voltage reference, but today finds heavy use as the feedback element in switching power supplies. It's made by the billions and most EE's haven't heard of it if they don't work on power supplies. The relevance of this video is it is a good complement to a LM317 / LM337 to get a far more accurate output voltage. You can get sub ±1% accuracy by pairing the two parts.

[@RC-1290]

I'm suddenly very curious what PDF viewer that is. I don't recognize the logo, and it looks better than the ones I tried so far.

[@EEVblog]

Drawboard PDF. They recently changed the logo and the look'n' feel of it.

[@SteveRichfield]

The two jelly bean solutions I am frequently looking for are: 1. A simple "neutral reference" between rails, to avoid paying an op amp and 2 resistors to generate this, while losing sleep over whether there are any circuit conditions that will overload the op amp once the product is put into service. There ought to be a regulator designed to do this, but I haven't found it (yet). 2. Every design seems to involve switching analog signals around. A bilateral switch like the 4066 works, but it's made of super-static-sensitive CMOS. A 74HC4316 or 74HCT4316 seems to qualify, but they are certainly NOT available like jelly beans. Steve

[@michaelmoorrees3585]

My jellybean switching regulator, is the MC34063. Multiple manufacturers, and was (is ?) used in car USB chargers, in all those dollar store units.

[@ernestuz]

When you said TL431 I smiled from ear to ear, yes it's a great part. For some reason I've never used the 4040/4041.

[@Broken_Yugo]

Don't forget the TO-92 (and SMD) 78Lxx 100mA version, good for breadboard and small projects. Jellybean enough they get remarked and sold as fake LDOs, lol.

[@優さん-n7m]

What about the Jellybean transistors (FET, JFET, MOSFET), diodes, zeners, LED, resistor, capacitor, inductor, ferrite bead, DC power connector, switch (slide, push), .......

[@matthewbeasley7765]

The longevity of these linear regulators is fantastic. Many parts come and go, yet these are still here. I design power electronics systems for a large multi-national, and one of our requirements is ± 24V for current sensors. The flux gate and closed loop hall current sensors up to about 300A can do ± 15V supply, but the big stuff into the high hundreds and thousands of amps requires ±24V. What makes it extra complicated is the hall and flux gate current sensors have a tight specification for the power supply rails. Today we use paired 7824 and 7924 regulators to post regulate the switcher supply and get our low ripple, high accuracy ±24V rails. Sadly, the 7924 has gone sole source and it's making the supply chain people nervous. We've considered using the LM317 & LM337 paired. I have an inclination that the LM337 will be longer lived, but... it is merely a hunch. In some ways I have the gut feeling that the LM337 may be the B52 of chips, and make it to the 100 year mark. Sadly, based on the fact that it is merely a hunch, we're going to high speed monolithic switching regulators. We'll see in a decade if it was the right call.

[@TheHuesSciTech]

10:49 Wouldn't it be better just to engineer the feedback voltage divider resistors to draw 5mA or whatever? That way the feedback pin gets a nice low-impedance feedback path, and you don't have a weird unnecessary third resistor.