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TPS55288: VCC LDO

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Replies: 5

Views: 52

Part Number: TPS55288

Dear team,

Is the voltage of VIN which VCC LDO needs more than 6.2V?
Our customer is going to make the output of 5V from 3.3V - 5V input.
In this case is another power supply necessary for VIN?

Regards,
PAN-M

  • Dear Sir,

    In this condition, the VCC voltage is around 5Vo-0.2V=4.8V. 0.2V is voltage drop across the LDO.

    Best Regards,
    Helen

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  • In reply to Helen chen:

    Thank you for comment,

    When Vin=3.3-5V and Vout=5V,  Vcc connects with Vout, but it do not satisfy Vout>Vin.
    Is there any problem?

    Regards,
    PAN-M

  • In reply to PAN-M:

    Hi PAN,

    VCC connects with the higher voltage of Vin and Vout.

    Best Regards,
    Helen

    Boost DC/DC Solution

  • In reply to Helen chen:

    Hi, Helen,

    Is the potential difference that it must over 0.2V?

    Regards,
    PAN-M

  • In reply to PAN-M:

    0.2V is a draft value, it is around 0.15V-0.25V, generally should be around 0.2V.

    Best Regards,
    Helen

    Boost DC/DC Solution

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