Giving a Circuit a Boost

I mentioned trying to use an LDO regulator with an old Westclox wall clock:

https://wb9kzy.blogspot.com/2025/05/failure.html 

But a thought occurred to me: isn't there a simple circuit to "wrap" a transistor around a regulator to boost current capability ?  I found an example here - a TI app note for the TPS71501 LDO regulator:

https://www.ti.com/lit/pdf/sbva015 

But that idea appeared in 3 terminal regulator datasheets from years ago:

also in this Onsemi datasheet for the 78xx regulators:

same circuit but includes a couple more caps

  

But the SBVA015 Application Report explains the circuit and how it might be used.  The two MOSFET transistors can be eliminated to simplify the circuit.  But the text warns that it might not be suitable below 9V due to stability and transient response concerns.  Unfortunately that's what is wanted, the ability to stay stable (and thus use less current) for extended periods while supplying big pulses of current once a second at 1.5 volts.

Oh well, thought I had a real inspiration there - but I'll give it a try and see what happens.  If nothing else I've found that rare beast, the LDO adjustable regulator (TPS71501).

Best Regards,
Chuck, WB9KZY
http://wb9kzy.com/ham.htm