This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

  • TI Thinks Resolved

TPS7A49: TPS7A4901DGNR

Prodigy 40 points

Replies: 5

Views: 58

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

  • Hi Serhiy,

    Can you take pictures of the failed devices? Do they have the same lot codes?

    I will try to get our sales support team in contact to help with the FA process.

    John Cummings 蔣康明
    Texas Instruments 德洲儀器
    Johncummings@ti.com

    Please click the "Resolved" link at the bottom of this post if I have answered your question.

    Thank you,

  • In reply to JCHK:

    Hi JCHK,

  • In reply to Serhiy Tsap59:

    Hi JCHK,

    They are:

    95TI

    PTJQ

    Best regards,

    Serhiy

  • In reply to Serhiy Tsap59:

    Hi Serhiy,

    I have our sales in contact with your procurement team to get to the bottom of this.

    Thanks,

    John Cummings 蔣康明
    Texas Instruments 德洲儀器
    Johncummings@ti.com

    Please click the "Resolved" link at the bottom of this post if I have answered your question.

    Thank you,

  • In reply to JCHK:

    Hi John,

    Thank you very much.

    Looking forward to hearing from you.

    Best regards,

    Serhiy Tsap

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.