• State Resolved
  • Locked Locked
  • Replies 2 replies
  • Subscribers 63 subscribers
  • Views 311 views
  • Users 0 members are here
Support feedback
Options
Options
Related

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

TPS2595: Current limit value and FLT pin

Kaji@PAN
Mastermind 7795 points
Part Number: TPS2595

Hi,

I am FAE, a distributor of TI products.
I'm getting questions from my customers, so getting information from you can be very helpful.
(1) If the FLT pin is not used, can the pin be open? (Or better to pull up)
(2) The current limit value (ILIMIT) will be set to 0.6A.
Is there any variation data for this value? (MIN and MAX values)

I calculated ILIMIT using Equation 4 in the data sheet before answering the customer.
The result is:
What is the reason for this, although there is a slight difference in electrical characteristics from TYP?
At 4.17A, RLIM is 484Ω
At 1.17A, RLIM is 1770Ω
At 0.49A, RLIM is 4444Ω
Best regards,
  • 0
    TI__Guru 57737 points

    Hi Kaji,

    I will get back to you soon.

  • 0 in reply to Praveen GD
    TI__Guru 57737 points

    Hi Kaji,

    As FLT/ pin is an open-drain pin, you can leave it floating when unused. 

    We cannot provide exact MIN and MAX values for 0.6A current limit setting as it has not been characterized at that value but you can get a fair idea by looking at Figure 16. Also, you can consider the accuracy/variation to be close to what it is for 0.49 A setting.

    There will be a slight difference in the current limit value in the EC table vs what you obtain by the formula because the the equation is obtained by curve fitting from the actual values. The values in the EC table are actual values obtained from device testing and Characterization.