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TLV755P: TLV75533PDBVR

Jagan K
Prodigy 170 points
Part Number: TLV755P


Tool/software:

Hi,

We have been using the Part TLV755P in our design for Vout of 3.3V,500mA. We observed that the Ground Current(Iq) for this LDO is varying among the IC's listed below, is it valid?

Sample 1 - 28 uA

Sample 2 - 33 uA

Sample 3 - 25 uA

Sample 4 - 23 uA

We have tested the above samples with same regulated Input voltage and under same design without load condition, but the Iq observed was different.

Thanks,

Jagan K

  • 0
    TI__Guru 50025 points

    Hi Jagan,

    The I_GND spec indicates that there is some spread at room temperature and at 0mA load condition that is due to process variation. What is the input voltage you used for the test? The only sample that doesn't fall within the EC spec is Sample 2, but the input voltage for the EC spec is VOUT + 0.5V, so if the input voltage for your tests was not 3.8V then the test doesn't exactly align with the EC spec.

    Regards,

    Nick

  • 0 in reply to Nick Butts
    Prodigy 170 points

    Hi Nick,

    Thank you for your support. All the samples were tested under identical conditions, with an input voltage of 4 V and room temperature maintained between 25 to 28°C.

    According to the datasheet, is it acceptable for I_gnd to vary between 14 and 31 µA across different samples?

    Thanks,

    Jagan K

  • 0 in reply to Jagan K
    TI__Guru 50025 points

    Hi Jagan,

    Yes, it's expected that there will be some spread.

    Regards,

    Nick