BQ25121A: Vsys Regulation

Mark Philip Felipe

Part Number: BQ25121A

Hi Team, would like to use the BQ25121A with a battery and wanna know if the Vsys will be able to regulate at 3.3V even if the battery is at 3V for example.

Thank you.

-Mark

over 2 years ago

0 Juan Ospina over 2 years ago

TI__Genius 14805 points

Hi Mark,

The SYS topology is strictly a step-down buck converter rather than a buck-boost. If you are powering from strictly from the battery then VSYS can only be as high as the battery voltage.

Best Regards,

Juan Ospina

Power management

Power management forum

BQ25121A: Vsys Regulation