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Part Number: TPS7A49
One of TPS7A4901DGNR have about half (0.6V) of required bandgap voltage reference level (1.2V). Is it manufacturing defect or can come from design flaws. I use another 2 similar parts for producing 5V and 2V5, while broken was for 17V5. I assume it was broken because after resoldering it with the same new IC, the problem is eliminated.
If you resolder the IC that appeared to be broken, do you get the same results? This may be a result of the device not being soldered properly.
John Cummings 蔣康明Texas Instruments 德洲儀器Johncummings@ti.com
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In reply to JCHK:
Yeah, although I do so without pad (power) soldering, but other ICs work well this way. I can post here a measurement of voltage input and NR/SS pins.
In reply to Junior_Decigner:
I would recommend sending the part in for failure analysis so we can see what may have happened.
Do you have a local sales contact to work with?
OK, I am not sure whom to address. There are some distribution partners and a local office.
If you can contact the local sales office, that would be best.
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