VBAT switch over in STR912FA

adiroz · ‎2009-01-28

Posted on January 28, 2009 at 17:23

adiroz · ‎2011-05-17

Posted on May 17, 2011 at 09:57

Hi,

I am about to design a new product with STR912FA. The design will be power from and AC source and a battery for backup.

I am trying to figure out what is the estimated time that the product can last with a 250mah bat.

One thing I did not see in the data sheet is the VBAT switch over ( from the power prespective ). what is the current figure from VBAT if VCC is higher than LVD? when is the power switch over between VCC to VBAT?

Best regards,

Adi.R