• State Resolved
  • Locked Locked
  • Replies 3 replies
  • Subscribers 33 subscribers
  • Views 305 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.

TIOL111: Temperature drift data for I_REV

Oba
Genius 17335 points
Part Number: TIOL111

Hello,

TIOL111 datasheet defines I_REV (Leakage current in reverse polarity) as the below figure.
Do you have temperature drift data for this I_REV with "EN=HIGH, TX=LOW; V(CQ to L+) = 3V" condition (marked with yellow)?

 

Regards,
Oba

  • 0
    TI__Guru 62920 points

    Hello Oba-san,

    The leakage decreases with increasing temperature.  To give some typical values for this condition, we see on average a leakage of about 472 uA at TA = -40 C, 440 uA at TA = 27 C, and 426 uA at TA = 125 C.  Please let us know if you have any further questions.

    Regards,
    Max

  • 0 in reply to Miguel Robertson
    TI__Genius 17335 points

    Hello Max,

    Thanks for your reply.
    My customer measured this parameter with a sample and the result was 121uA.
    I feel it is too small value compared with typical value in your answer, about 440uA.
    Do you think this 121uA is reasonable value? 

    Regards,
    Oba 

  • 0 in reply to Oba
    TI__Guru 62920 points

    Oba-san,

    I am sorry for the delay - I had typed a response last week but I just notice it doesn't seem to be posted in this thread.  I think the difference the customer reports is higher than expected and so we should verify that the measurement set-ups are equivalent.  There are a couple things primarily to check.  One is that the voltage at C/Q is 3 V different from L+.  Even if so, it may be interesting to try sweeping across some voltage range (like 1.5 V to 4.5 V) to see if there is a region of similar leakage that has just shifted slightly in voltage.  Another thing to check is the ammeter series resistance - it should be low enough to not skew the measurements.  (Many ammeters allow for several different series resistance values in order to measure currents in different ranges, and at the extreme end of their sensitivity sometimes the series resistance can be large enough to limit the current or influence the C/Q voltage.)

    Regards,
    Max