LP87524B-Q1: Where to tie the SCL and SDA lines when they are unused

Kevin Lannen

Part Number: LP87524B-Q1

The datasheet for the PMIC does not mention what to do with the SCL and SDA lines if they are unused. Since the board will not have a 3.3V supply until after the PMIC is turned on, should they be tied to the 3.3V output of the PMIC or tied to ground?

Additionally, if they are tied to the 3.3V output should this be done through a pullup or straight to the rail?

Thanks,

Kevin

over 5 years ago

0 Nick Jakse49 over 5 years ago

TI__Expert 4155 points

Kevin,

Typically unused SCL and SDA pins can be tied to GND. I notified our device expert so if there is anything different about how to handle this for this device he can let you know.

Thank you,
Nick

0 Tomi Koskela over 5 years ago

TI__Genius 11020 points

Hi Kevin,

You can connect SCL and SDA directly to GND if they are not used.

Thanks.

Regards,

Tomi Koskela

Power management

Power management forum

LP87524B-Q1: Where to tie the SCL and SDA lines when they are unused