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TPS799: Tps799

syed S

Prodigy 110 points

Part Number: TPS799

Im using TPS79928 fixed LDO which has 3.3V input and 1.8V enable. I'm getting output pulse of 540mV when the 3.3V input reaches 1.2V level but EN is still low. Could you please clarify the issue why the output is toggling to the intermediate 0.54v when there is no EN?

over 1 year ago

0 Hannah Grace over 1 year ago

TI__Genius 15125 points

Hello,

Thank you for your question.

I will get back to you within 2-3 business days.

Best Regards,

Hannah

0 Hannah Grace over 1 year ago in reply to Hannah Grace

TI__Genius 15125 points

Hello,

After reviewing your question, I have determined that it seems as though the LDO is entering into shutdown mode:

As stated, when the EN pin is driven low, then the LDO will enter into shutdown mode.

If you are not planning to use the EN pin, please connect this pin to IN.

Please let me know if you have any additional questions.

Best Regards,

Hannah