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LM2577: LM2577 burnt issue

Chase Jeong
Genius 5530 points
Part Number: LM2577

Dear TI experts,

My customer uses LM2577SX-ADJ for their product. And they saw burnt issue recently.

Failure rate is about 4pcs/400pcs.

I want to to check that any similar issue from other customers world wide.

Here are the schematic of my customer, output current consumption is about 150mA. it is for backlight LED of LCD panel.

Best regards,

Chase

  • 0
    TI__Genius 10385 points

    Hi Chase,

    Thank you for using E2E forums, regarding your query could you please elaborate more on what type of burnt issue, what was damaged and what were the conditions and if you have some waveforms, please share them. This will make sure that we can find the root cause more efficiently.

    I would also need more details on the design specs, such as Vin(min, typ, max), Ioutmax and Fsw.

    Thank you

    BR,

    Haroon