Power consumption statistics on PCA9517

Rishi Kant

Other Parts Discussed in Thread: PCA9517, TCA9535

I am considering using the PCA9517 as a repeater with +5V on both the A and B sides. How much power can I expect it to consume on an average?

over 13 years ago

0 Benjamin Mak over 13 years ago

TI__Intellectual 2190 points

Hi Rishi,

I will follow up with this question. I will get back to you shortly.

Thanks,

Ben

0 Benjamin Mak over 13 years ago in reply to Benjamin Mak

TI__Intellectual 2190 points

Hi Rishi,

Since there is no typical ICC spec for VCCA, it is difficult to find the average power consumption.

The maximum power consumption will be (1mA * 5V) (max for VCCA) + (5mA * 5V) (max for VCCB) or 30mW. The average, however, will be less than (1.5mA * 5V)(typically ICC for VCCA) + (1mA * 5V) (max for VCCA) or 12.5mW.

Hope this helps!

Ben

0 sadatan vashistha over 13 years ago in reply to Benjamin Mak

Prodigy 190 points

Hi all , I am using TCA9535PWR for switching ULN2803 which is further being used for driving 8 relays with 90mA current consumption for each relay.Now I am facing problem of heating of Both ULN2803 and TCA9535 (TCA9535 is heating more). I tried inserting 1k to 4.7K of resistance in series between I/O expander and ULN2803 but still not be able to solve the problem .Please Help. for your reference Attaching the circuit diagram i am using for this purpose.

thanks

Sadatan

0 sadatan vashistha over 13 years ago in reply to sadatan vashistha

Prodigy 190 points

Please help!!! I am stuck.

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Power consumption statistics on PCA9517