BQ24450: problem of STAT1 pin

P M Chavan

Part Number: BQ24450

Hi all,

What are the actual voltage of STAT1 pin while battery charging in float,bulk and boost mode? I have following readings while testing BQ24450 charging ckt.

Float mode:

STAT1 pin vtg= 7mv

Boost mode:

STAT1 pin vtg= 5mv

These are our practical readings for stat1 pin if additional info about ckt design needed let me know.

Regards,

Prashant Chavan

over 7 years ago

0 P M Chavan over 7 years ago

Prodigy 75 points

Greeting of the day!!

I am waiting for the reply from TI, If you require detailing of schematic, I will provide.

Please , it's very urgent.

Thanks for help
Prashant

0 Bill Johns over 7 years ago in reply to P M Chavan

TI__Guru* 75656 points

In the above test the voltage on STAT1 is always low. In your circuit is a pull up resistor to pull this pin to probably input voltage.
Does STAT1 go high?
Is STAT2 changing state?
Are all of your boards doing this?

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BQ24450: problem of STAT1 pin