BQ25570: I don't want to use the Vout of the IC

hazim mohamed

Part Number: BQ25570
Other Parts Discussed in Thread: BQ25504, BQ25505

Hi,

I'm working on a project, where I just want to use the BQ25570 IC to charge a Li-Ion battery. I don't want to use the Vout or the buck converter option of the IC. I won't also connect an inductor at the LBuck pin, so I'll be connecting the Vout_en pin LOW.

My question here, If I don't want to use the Vout pin, as well as the Lbuck pin, Will the IC work properly if they were left floating, or should I connect them to something (eg. to GND).

Thanks.

over 6 years ago

0 Jing Zou over 6 years ago

TI__Mastermind 20570 points

If you are not using the buck on BQ25570, please have a look at BQ25505 or BQ25504 instead.

0 hazim mohamed over 6 years ago in reply to Jing Zou

Prodigy 90 points

Thank you, but i'm currently using this IC and I wanna know if the buck isn't connected, will it affect the harvesting or not ?

thank you.

0 Jing Zou over 6 years ago in reply to hazim mohamed

TI__Mastermind 20570 points

Hello Hazim,

DNP the component of the buck should not affect the boost operation when it is disabled. Please make sure the buck converter is disabled by pulling VOUT_EN low.

I would also recommend to order and EVM for further evaluation.

0 hazim mohamed over 6 years ago in reply to Jing Zou

Prodigy 90 points

Thank you very much Mr. Jing, I can't wait to try it. Also I'm planning now to play with the EVM.

Regards,
Hazem.

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BQ25570: I don't want to use the Vout of the IC