Hi
We use TPS7A4901DGNR in 5.6V to 5.0V voltage regulator, typical output current is about 75-80mA.
The PCB is in production from 2014. No an issue till November, 2019.
Starting from the end of November we experienced reduced voltage for about 15-20% of all produced PCBs (down to 3.5V).
Looks like hundreds samples defected.
Test on 2 defected components shows, that current limit starts from 55-60mA. Before reaching this level, voltage regulating is OK.
For good components current limit is according to the specification (>220mA).
Increasing of input voltage to 6-10V does not help.
Could you please help.
Thank you in advance.
Best regards,
Serhiy Tsap