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LMR16030: Voltage drop issue when current = 2.6A

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Part Number: LMR16030

Hi team,

My customer just send me a question about LMR16030:

The regulated output voltage is 3.9V. When the current is added to 2.6A, the output voltage will drop to 3.6V. Sorry for can't post the schematic, but it's basically the same with the reference design. The test and waveform figure is attached below.

Can you analyze this issue and give me several possible answers?

Thank you.

Gary


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