Regarding to Absolute Maximum Ratings on UCC2813-1, my customer is asking some question.
They are understanding that even if Vcc exceeds 12V(Absolute Maximum Ratings), it is no problem when Icc does not exceed 10mA.
Because this device has internal ZD(13.5V).
(They understand that internal ZD current is 10mA.)
So they will use upto 16V as Vcc.
Their schematics(around Vcc) is following.
(1) Their understanding is correct?
According to the note (3) in Absolute Maximum Ratings section, I believe that it should keep ratings(12V) any case.
Could you please give me some comment, opinion and advice?
(2) Does UCC2813-1 have internal ZD(13.5V).?
If so, what purpose is internal ZD used for?