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TPS2552: Vdrop on TPS2552

Jimmy Lai
Expert 6845 points
Part Number: TPS2552

Dear Team,

I measured around 2.3V at the output of TPS2552 and the input voltage was 3.3V.

I also changed the R183 to 20K OHM, but the output voltage is still around 2.3V.

The schematic is as follows.

Could you help to check what is wrong?

Many Thanks

Jimmy

  • 0
    TI__Mastermind 18031 points

    Hi Jimmy,

    1. How much is the load?

    2. Add one more 0.1uF at input terminal.

    3. Try to change one new IC.

    4. Try R183=0ohm.

    5. Measure pin4 to confirm whether fault asserts.

    For TI's policy, I will first click resolved button.

    If you have any other concern, contact me any time.

    If you think resolved, please help click 'Issue is solved button'.

    Thanks.