TPS22919: Can the NC be tied to ground?

Bryan Horton

Prodigy 60 points

Part Number: TPS22919

Can the NC pin connect to ground?

Or is it required to float?

over 5 years ago

0 Shreyas Dmello over 5 years ago

TI__Mastermind 32650 points

Hi Bryan,

The N/C pin has to be left floating for this device.

0 Bryan Horton over 5 years ago in reply to Shreyas Dmello

Prodigy 60 points

Hi Shreyas,

Thank you for the prompt response.

Is this pin connected to circuitry inside the device?

If so, is it a high (>10Meg) or low impedance (<10Meg)?

If high impedance, is device functionality sensitive static charging?

Are there ESD protection structures connected to this pin?

Thanks,

Bryan

0 Shreyas Dmello over 5 years ago in reply to Bryan Horton

TI__Mastermind 32650 points

Hi Bryan,

The N/C pin is not connected to any device internals. Still, we recommend that this pin is to be left floating.

0 Bryan Horton over 5 years ago in reply to Shreyas Dmello

Prodigy 60 points

Shreyas,

I have a rational requirement to ground this pin if it is truly not connected to anything internally. I need to understand the basis of the recommendation to float it.

Bryan

Shreyas Dmello said:

Hi Bryan,

The N/C pin is not connected to any device internals. Still, we recommend that this pin is to be left floating.

0 Shreyas Dmello over 5 years ago in reply to Bryan Horton

TI__Mastermind 32650 points

Bryan,

Leaving the N/C pin floating is considered best practice for this device.

As stated previously, there is no internal connection to this pin.

Power management

Power management forum

TPS22919: Can the NC be tied to ground?