CA9535 sleep mode consumption

jyl

Other Parts Discussed in Thread: TCA9535

Hello,

On TCA9535 datasheet, we got lot's of information about the power consumption in operating mode (SCLK active) and standby mode (SCLK inactive), but both of them assume all I/O as input. What about this quiescent current if one port is set as an output (so 8 outputs in total), but absolutely no load on all of them?

This is a very important parameter for our design, and unless cutting some tracks on our PCB we are not able to know if the small leakage observed is due to the TCA or other devices...

Thanks
Best Regards
JYLO

over 9 years ago

0 Siby James over 9 years ago

TI__Expert 5140 points

Hi,

I'm currently looking into this for you and will get back to you once I have more information.

Thanks,
Siby

0 Siby James over 9 years ago in reply to Siby James

TI__Expert 5140 points

I took a TCA9535 device into the lab to test this specific scenario and saw that there was no change from the datasheet listing when in operating or standby mode. The current should be expected to be similar.

Thanks,
Siby

0 jyl over 9 years ago in reply to Siby James

Intellectual 745 points

Excellent
Many thanks Siby,

Jylo

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CA9535 sleep mode consumption