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TPS7A49: TPS7A4901DGNR

Part Number: TPS7A49

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