BQ25120A: Charging a 3V rechargeable coin cell battery

Prodigy 241 points

Part Number: BQ25120A

Is it possible to use the BQ to charge a 3V rechargeable coin cell batter like this one

www.sii.co.jp/.../

over 2 years ago

+1 Juan Ospina over 2 years ago

TI__Genius 17545 points

Hi,

Unfortunately the BQ25120A only has configurable battery voltages down to 3.6V. That battery appears to only have a 3.3V max charge voltage so the 120A would not be able to charge it.

Best Regards,

Juan Ospina

0 YZ over 2 years ago in reply to Juan Ospina

Prodigy 241 points

Thanks. That's what I figured.
Any recommendations for a BQ equivalent for that type of battery?

0 Juan Ospina over 2 years ago in reply to YZ

TI__Genius 17545 points

Hi,

Based on the battery specifications (3.3V max charge voltage, 0.1mA charge current) we don't really offer any chargers that can match both of those parameters. The 0.1 mA charge current in particular is very small.

Best Regards,

Juan Ospina

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BQ25120A: Charging a 3V rechargeable coin cell battery