MC33269ST-5.0T3 Voltage Regulator, does it exist?
It's shown in the Motorola datasheet so probably it just got dropped due to low demand. 

It's not really a "low dropout" part, more of a medium dropout (1.2V). 

Sourcing questions are off-topic here. You can look at the specifications and pick a similar part such as the ubiquitous LM1117-type parts eg. https://www.ti.com/lit/ds/symlink/lm1117.pdf