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ULN2803A / Internal transistor H-parameters .

ACGUY
Guru 11170 points


Hi all,

We require detailed information of ULN2803A.

Please let us know the parameters of this device .

Also, fig.3 in datasheet, unit of input current is mA.
I guess this correct unit is uA.
Is it correct?



Regards,
Nagai

  • 0
    TI__Mastermind 24985 points

    Hello Nagai-san,

    Please disregard Figure 3. It is incorrect, and we are working to update this datasheet. Please see the data below for Hfe value of the ULN2803 across temperature.

    Please note that these curves are for a typical unit and there may be additional variation across temperature and process.

    Best,

    Michael

  • 0 in reply to Michael J Schultis
    Guru 11170 points
    Hello Michael-san,

    Thank you for your response.
    However, Information that we are requesting is H-parameter.
    Hie, Hre, Hfe and Hoe.
    Our customer is requesting the internal transistor's characteristics.
    We and they would like to calculate Vbe and Ibe.
    Could you help us?

    By the way, fig.3 in datasheet, unit of input current is mA.
    I guess this correct unit is uA.
    Is it correct?

    Best regards,
    Nagai
  • 0 in reply to ACGUY
    TI__Mastermind 24985 points

    Hello Nagai-san,

    We are not willing to provide all H-parameters for our device, as this is TI proprietary information, however we are willing to share Hfe value, which I have shared in the previous post.

    As for Figure 3, please disregard altogether. The Hfe curve provided in the previous post is more appropriate for this device.

    Best,
    Michael