E-TDA7391PD tab connection?

albin · ‎2016-02-04

Posted on February 04, 2016 at 13:53

Hi,

Is the tab or ''slug'' of E-TDA7391PD connected to anything? I'm guessing that it's connected to GND, but I cannot find any information regarding this.

On the similar circuit TDA7391LV, it's stated in the datasheet that the ''tab'' of the ''Multiwatt 11'' version is connected to GND, but I don't see any information regarding the ''PowerSO-20'' versions.

If it's not connected to GND. Is it okay to connect it to GND?

Kind regards,

Albin

Nickname1623_O · ‎2016-02-04

Posted on February 05, 2016 at 03:40

Hi Ablin,

the slug should be connected to P-GND , due to it had been connected to silicon die substrate inside , so it would be the lowest reference level in system.

and the package you chose was slug down type, so to dissipate thermal from amplifier , you need keep enough ground panel area as heatsink .

Thanks

YT

albin · ‎2016-02-04

Posted on February 05, 2016 at 08:07

Hi YT,

Thank you! I guessed that this was the case, but I wanted to be safe since it will be hard to disconnect the slug-pad from GND once connected on the prototype. 🙂

Kind regards,

Albin