TPS2490: Powergood output state @Vcc=0V

higa daisuke

Intellectual 900 points

Part Number: TPS2490

Hi support team.

Please tell me the state of PG output at Vcc=0V.

Hi-z or Low?

Best regards.

Higa

over 8 years ago

0 Aramis P. Alvarez over 8 years ago

TI__Genius 10370 points

Hi Higa,

Thank you for considering TI parts for your application. When VCC = 0V, there's no power on the IC. Usually, pins (including PG) are in an unknown state when there's no power to the IC. The POR (power on reset) for the TPS2490 is around 6V typical (page 11 of Datasheet). I believe once VCC has reached this value, the PG signal will go low if Vds is greater than 1.25V.

I hope this helps :-)

Best Regards,

Aramis P. Alvarez

0 higa daisuke over 8 years ago in reply to Aramis P. Alvarez

Intellectual 900 points

Thanks for your answer.
I understood.

Best regards.

Power management

Power management forum

TPS2490: Powergood output state @Vcc=0V