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  • TI Thinks Resolved

LMZ21700: IC failure in field

Prodigy 155 points

Replies: 3

Views: 409

Part Number: LMZ21700

Hello,

We use this IC in an automotive application to convert a +12V battery rail to 1.8V and have observed a failure. The output impedance between pin 4 and ground is 4 ohms and the output voltage is zero.  Are you aware of any conditions that can cause this failure. There was no other failure on the PCB and the current draw and performance returned to normal when this IC was bypassed.

Thanks,

Sriya

  • Hi Sriya,

    Can you provide the schematic and PCB layout of your circuit? I'd like to review it to understand the application.

    Regards,
    Jimmy
  • In reply to Jimmy Hua:

    Hi Sriya,

    I will be closing this thread since it was addressed in another E2E post.

    Regards,
    Jimmy
  • In reply to Jimmy Hua:

    Thank you Jimmy.

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