TLV5636: Circuit check

Hi Kobayashi,

With VDD  = 3.5V, You cannot configure internal reference as 2.048V, since we have x2 output buffer  which will cause clipping of the output stage.

Max Capacitance allowed on Ref pin is 100pF in internal reference mode.

Hope this clarifies your query.

Regards,

AK

Hi Akhilesh,

Hi,

With max value capped at 3V, it may be OK. You need to verify the same as we didn't test the device for the same conditions. Most likely it will be OK ( Please verify).

As far as CAP on ref pin is concerned, 10uF Cap can affect in multiple ways, first and foremost being stability of the reference circuit as it can oscillate, again please verify. Secondly your start up and slew time can be impacted. Damage to the device not likely

Regards,

AK

Hi, AK.

We are investigating the cause of some broken ICs.
The broken IC has no REF and OUT outputs.

Is it due to the REF capacitor or VDD?

Best Regards,

Hi, AK

The current of VDD after startup is 0.89mA, and 1.2mA after setting the internal register.

There seems to be no short inside, do you know anything?

Best Regards,

Hi,

When you are operating device under recommended conditions did the device fail?

If yes, we may need to do FA on the same to identify root cause for the same. How many devices failed? whats the failure rate?

If no, I request you to stick to device recommended operating conditions.

Regards,

AK

Hi, AK

I'm sorry, our settings were wrong.
If set correctly, the output was normal.
Is the reference setting an external input by default?

Best Regards,