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LM117: Performance at high temperatures

Jonathan Geronga
Expert 7930 points
Part Number: LM117

Hi Team,

We have a customer inquiry below about the LM117 performance at high temperatures:

Our customer would like to know if do we have data or test results of the behavior of the component at high temperatures (always within the T range -55° to +125°C). They are particularly interested in knowing if we have detected any anomaly during its performance at temperatures closer to higher limit. They are afraid that the temperature their unit can reach a certain point may be affecting the functionality of the component. In any case, they are above +125°C though.

What would be the thermal impact on the component jitter? Could it produce an extension of the duty cycle?

This is for a space application.

Please let me know if you have a question with the customer.

Thanks!

Jonathan

  • 0
    TI__Guru 50040 points

    Hi Jonathon,

    I am not sure I understand the question, so I apologize if this is not what you are looking for.

    The recommended range for the LM117 is -55 to 150C. So the limits in the electrical characteristics table are guaranteed in this range.

    I am not sure what you are referring to with respect to Jitter and duty cycle, this is a linear regulator. If you mean for powering clocks or DAC's/ADC's normally you want a much lower noise device to minimize spurs. What is the input/out voltage range for the application?  If you are looking for a much lower noise regulator in this range, have a look at the TPS7A47.

    If I did not answer your question, can you please clarify?