TLV62569: Question about input voltage

Hi Chase,

The voltage within the recommended operating condition for the device should be okay and should not cause any damage to the IC. However, the second condition "Pulse 5b" exceeds the recommended max condition and is seen every 20 seconds. Frequent application of this pulse might degrade the lifetime of the device and eventually damage it. Although, it would not damage the device immediately, the lifetime of the device could not be guaranteed in such conditions. 

Do you know why do they observe frequent pulses like shown in pulse 5b?  

Thanks!

Best regards

Sneha 

Dear Sneha,

Thank you for your support.

As you know, we discussed about this issue for a long time. this problem is still happened now, and their end customer thinks this is critical problem.

They just assume that the input of TLV62569 is like pulse 5b, so they can expect the possibility of defect.

So do you think that this kind of pulse could damage the device, and It can be die in a short time?

Best regards,

Chase

Hi Chase,

Pulse like 5b exceeds the recommended operating condition for the device. Even though it is for a short duration, but these pulses are repetitve. Thats why I am concerned that it might degrade the lifetime of the device. The graph below shows device behavior within the recommended operating condition and upto Abs max rating. 

Will the customer be open to look into other alternatives? For ex: TPS62A02, this is the newest addition to our portfolio with more Vin robustness and TLV62565, this is p2p to TLV62569, with higher abs max rating up to 7V.

Let me know your thoughts.

Thanks!

Best regards

Sneha 

Dear Sneha,

Thank you for your support.

I saw the datasheet of TPS62A02, ABS maximum rating is 6V, same as TPS62569.

Of course it would be very helpful if you recommend other IC to solve this problem.

Please confirm it. Thanks.

Best regards,

Chase

Hi Chase, 

TLV62565 has an ABS max rating of 7V. Would that be of interest to the customer?

https://www.ti.com/lit/ds/symlink/tlv62565.pdf?ts=1685019788469&ref_url=https%253A%252F%252Fwww.google.com%252F

Let me know. Thanks!

Best regards

Sneha 

Hi Chase,

Do you have further update here? 

Thanks!

Best regards

Sneha 

Dear Sneha,

Thank you for your support. I am still discuss this issue with my customer.

I will check the status for further questions.

Best regards,

Chase

Hi Chase, 

Okay. Keep me posted once you get an update from them.

Thanks! 

Best regards

Sneha 

Dear Sneha,

Thank you for your support.

I got an email from my customer.

They suggested about changing TLV62569 to TLV62565, as you recommended.

and their end customer requested about more information about absolute maximum input voltage of TLV62565.

1. Do you have any data of TLV62565 like below diagram? (below image is about TLV62569, as you pasted before.)

Because the end customer wants to compare the graph between TLV62569 and TLV62565.

2. Do you have more specific data about the diagram above, about TLV62569 and TLV62565?

The end customer want to know the approximate figure of Y axis in that graph.

Please check this issue. Thanks.

Best regards,

Chase

Hi Chase,

The basic representation for the graph would not change for TLV62565. Only the values would differ as below:

The typical input voltage = 5V, the recommended max input voltage is 5.5V and the ABS max rating is 7V. So the margin is of 2V between ABS max and typical condition. However, we still recommend to have the input voltage upto 5.5V only.

Regarding the diagram, it is a graphical representation to show the reliability. The green area represents the most reliable operating condition. However, within the restricted application, we do not guarantee the behavior and it could start degrading the lifetime of the device, even if it is not immediately damaged. Above Abs max rating, it could damage the device and we cannot guarantee the operation.

Thanks!

Best regards

Sneha