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REF3312: REF3312: Output current

user5895002
Prodigy 50 points
Part Number: REF3312

We have a question about the  output current of REF3312. In the data sheet on page 1, is said that this output current is +-5mA



And on page 5 is said that it is +-30mA




What is the actual value? 30mA or 5mA?

Thanks in advance.

  • 0
    TI__Genius 9375 points
    Hi user,

    To clarify this on the datasheet, we characterize the device and advertise it at ±5 mA. That being said, the device itself can handle ±30 mA but it would require a far larger dropout voltage and could even require higher than the specified input voltage max of 5.5 V. We recommend to stay within ± 5 mA.

    Thanks,
    Abhinav.
  • 0 in reply to Abhinav.Sharma
    Prodigy 50 points
    Hi, Abhinav.

    Thank you very much for your reply.
    We need to handle 10mA, would you be kind enough to send us characterization data when REF3312 stays 10 mA? Do you have any data? The features of this component are very suitable for our application, but driving 10mA.
    Could you help us?

    Thank you very much,
  • 0 in reply to user5895002
    TI__Genius 9375 points
    user,

    We don't characterize the REF3312 at 10mA, but like I mentioned earlier, you need a high dropout voltage for it to work. You should be able to drive 10mA as long as you have the dropout to support this. Internally, we have tested up to 30 mA with high dropout and it is functional. Let me know if you have any other questions.

    Thanks,
    Abhinav.
  • 0 in reply to Abhinav.Sharma
    Prodigy 50 points

    Dear Abhinav.

    Thank you very much for your reply. Could you tell us the value of this dropout? so, we could know if we are able to support it, You have tested up to 30 mA.

    And in case of driving 10mA, the value of the quiescient current is known? Should you mind telling this value to us?

    It's very important for us to drive 10mA, in other case we'd have to look for another component.

    Thanks in advance.

    Mercedes

  • 0 in reply to user5895002
    TI__Genius 9375 points

    user,

    While we don't have a value or characterization for this dropout exactly, you can see the graph here:

    That being said, you can probably extrapolate this data to 10mA to be around 200-300 mV, but this spec can not be guaranteed because it is not characterized. We also do not have the quiescent current value, this is another spec that would need to be tested. Since 10mA is still technically within our operating conditions, The Iq shouldn't be outside of the spec in the datasheet.

    Thanks,
    Abhinav.