Sequencing Diodes

Tony51646

Other Parts Discussed in Thread: TPS3803

In TI's power management guide, I saw the word, "Sequencing Diode", could you explain this word to me? what does it mean?

Thanks,

Tony

over 14 years ago

0 Chris Glaser over 14 years ago

TI__Guru**** 150750 points

Can you give a link and a page number to the document that you are referring to?

0 Tony51646 over 14 years ago in reply to Chris Glaser

Intellectual 270 points

Here is the link,

http://focus.ti.com/lit/sg/slvt145j/slvt145j.pdf

On page #5

0 Chris Glaser over 14 years ago in reply to Tony51646

TI__Guru**** 150750 points

Ah, ok. That block just means that there are multiple diodes there (on a given EN pin) for very simple sequencing. i.e. the input EN signal would be tied to a diode's cathode and the reset signal of the TPS3803 would be tied to the cathode of another diode. Both anodes would be tied to the EN pin. Thus, the IC would not start until both the input EN signal and reset signal went high.

Power management

Power management forum

Sequencing Diodes