BQ24073: The indicate about CHGpin.

Kengo.Y

Part Number: BQ24073

Hi team,

I'd like to know about the indicate about CHGpin.
Could you tell me the state when it becomes Low?
The datasheet said Low(for first charge cycle) at table3.
What does the first charge cycle mean?
Is it CC FAST CHARGE?

Sincerely.
Kengo.

over 4 years ago

0 Anthony P Pham over 4 years ago

TI__Mastermind 23410 points

Hi Kengo,

The /CHG pin will go low when the device is charging. It will be high impedance if the device is not charging. As the /CHG pin is an open drain and so to see the states clearly requires a pull-up.

The fast charge portion of the battery charge profile would be where the charge current going into the battery is at its maxed and should be the current programmed at the ISET pin.

Best Regards,

Anthony Pham

0 Kengo.Y over 4 years ago in reply to Anthony P Pham

Guru 11165 points

Hi Anthony,

Thank you for your reply.
Does the /CHG pin go LOW while PRECHARGE?

Sincerely.
Kengo.

+1 Anthony P Pham over 4 years ago in reply to Kengo.Y

TI__Mastermind 23410 points

Hi Kengo,

Yes, the /CHG pin will be low in the precharge phase.

Best Regards,

Anthony Pham

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BQ24073: The indicate about CHGpin.