TPS78833- Unused pin

Junya Kato

Expert 1635 points

Hello Team,

Please tell us about the treatment of unused pins.

EN-pin(3): Floating OK? or Connect to GND?

SR-pin(4): Floating OK? or Connect to GND via a capacitor?

Best regards,
Kato

over 9 years ago

0 Ryan Eslinger over 9 years ago

TI__Guru 55940 points

Hi Kato,

Please excuse a delay in response due to the US Holiday.

Very Respectfully,
Ryan

0 Ryan Eslinger over 9 years ago in reply to Ryan Eslinger

TI__Guru 55940 points

Hi Kato,

If /EN is not used, it should be connected to GND.

SR is meant as a way to filter the internal reference and provide a controlled startup by charging the external capacitor desired. As such it is designed to be either floated or connected to GND through a capacitor. We recommend a 0.01uF capacitor for best noise performance.

Very Respectfully,

Ryan

0 Junya Kato over 9 years ago in reply to Ryan Eslinger

Expert 1635 points

Hi, Ryan

Thank you your reply.

I was able to fully understand.

Best regard,
Kato

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TPS78833- Unused pin