TPS2552: Question about set the Rilim.

David Kim2

Expert 2690 points

Part Number: TPS2552

My customer set the Rilim resistance to 52.3kohm.
Then the value of IOSMIN is 448.3mA.

My customer is worried if there is a current limit at 440mA.

My customer had no problem with the test, but they want to hear TI's opinion.

Can it be current limit at 440ma?

Thanks

over 1 year ago

0 Kuno Wu over 1 year ago

TI__Mastermind 18556 points

Hi David,

Thank you for reaching out us, what is precision of your Rlimit (52.3Kohm)?

Best Regards,

Kuno

0 David Kim2 over 1 year ago in reply to Kuno Wu

Expert 2690 points

Hi Kuno

My customer uses F(1%) resistance.

Thanks

0 Kuno Wu over 1 year ago in reply to David Kim2

TI__Mastermind 18556 points

Hi David,

So you can use the 52.823kohm(52.3*1.01) to calculate the IOSMIN, so the IOSMIN=448.25mA(I just found our customers have considered the Rlimit precision), so it will be not current limit at 440mA.

Best Regards,

Kuno

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TPS2552: Question about set the Rilim.