TPS61040-Q1: new A-type differences

Norbert Nagel

Part Number: TPS61040-Q1
Other Parts Discussed in Thread: TPS61040

Can you please explain what is the difference between TPS61040AQDBVRQ1 and TPS61040QDBVRQ1?
Both parts seem to have the same data, but different top side marking. So, what is that A indicating?

9 months ago

0 Lei Zhong 9 months ago

TI__Expert 8270 points

Hi Norbert,

I'll check and get the feedback to you next Monday.

Regards

Lei

0 Lei Zhong 9 months ago

TI__Expert 8270 points

Hi Norbert,

TPS61040AQDBVRQ1 and TPS61040QDBVRQ1 are the same devices, different in top symbol only.

Regards

Lei

0 Norbert Nagel 9 months ago

Prodigy 10 points

Hi Lei,
thanks for that quick feedback regarding my question.
But I don't understand why TI is using a new part number and even a changed top side marking when the device is still the same.
We have that circuit already used in a series automotive product and need to explain that change to our customer. What can I tell them?

0 Lei Zhong 9 months ago in reply to Norbert Nagel

TI__Expert 8270 points

Hi Norbert,

Usually a "-A" device with different top side marking has something different with the originally device.

For TPS61040AQDBVRQ1 and TPS61040QDBVRQ1 the condition is a little special: the "A" is added because of some internal flow change.

Anyway, the materials and the guaranteed specs are all the same.

Regards

Lei

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TPS61040-Q1: new A-type differences