TPS2553: Current Limit Accuracy

Kuan Wei Chen (Kevin Chen)

Part Number: TPS2553

Customer is using this one for current limit.

Can you check the reason why it is not precise enough?

We design the current limit: Imin~Imax 939mA~1.1A

But when we set the loading at 890mA the flag will go low, but the 5V still working.

1.already check the resistor have 1% accuracy

2.Two boards have the same issue

Kevin

0 Kuan Wei Chen (Kevin Chen) over 6 years ago

Dear Team,

Here is the layout.

Kevin

0 Ziv Zhang over 6 years ago in reply to Kuan Wei Chen (Kevin Chen)

Hi Kevin,

I will have a test on bench and send you the results later.

I think you should also check the test method as it is impossible so big difference out of the spec range.

For TI's policy, I will first click resolved button.

If you have any other concern, contact me any time.

If you think resolved, please help click'Issue is solved button'.

Thanks.

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