TPS66020: PP5V current limit

Hello Fred,

If the current limit has been reached then the voltage will change as a function of the load:

"When an overload condition is present, the device maintains a constant output current, with the output voltage determined by (ILIM_PP5V x RLOAD )."

Fred Cheng said:

in one word, how would "VBUS" react if customer increase the current slowly and eventually up to the current limit 5V/3.5A?

does it drop instantly ? or it will keep 5V until thermal shutdown?

It will keep the voltage determined by (ILIM_PP5V x RLOAD) until thermal shutdown.

Regards,

Chris

Fred Cheng said:

What does the Rload mean?

Resistance of the load.  

Regards,

Chris