TCA9517: TCA9517 application

Nanfang Liao

Intellectual 2085 points

Part Number: TCA9517

Hello Team,

Below is my customer application, for B side, the VCCB power supply and the pull-up power of SDA and SCL are on different boards, it is OK? thanks

Regards,

Nanfang

over 7 years ago

0 Miguel Robertson over 7 years ago

TI__Guru 62920 points

Hi Nanfang,

I don't see any issues with this approach.

Regards,
Max

0 fhoude over 7 years ago

TI__Mastermind 20645 points

Hello Nanfang,
Do you know what they are doing with EN pin? Do not leave that pin floating or you might get excessive current draw and potentially an unknown state depending on leakage.
-Francis Houde

0 Nanfang Liao over 7 years ago in reply to fhoude

TI__Intellectual 2085 points

Hello,

Why we can't leave the pin floating? it is connected to VCC internally.

Regards,
Nanfang

0 fhoude over 7 years ago in reply to Nanfang Liao

TI__Mastermind 20645 points

Opps, you are correct, this part does have internal pull up. Good to go.

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TCA9517: TCA9517 application