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TPS7A85: BIAS capacitor value

K. Sasaki14
Guru 10200 points
Part Number: TPS7A85

BIAS pin requires 10uF or larger value.
Is this 10uF effective capacitance value? EVM uses 10uF 16V capacitor.
If this is not effective value requirement, please let me know the requirement value of effective capacitance.

Best Regards,
Kohei Sasaki

  • 0
    TI__Guru 55940 points

    Hi Kohei,

    Section 8.1.1 Recommended Capacitor Types of the datasheet (copied below for your convenience) covers all recommended capacitors for TPS7A85.

    Please also note that a bias rail is not required in all applications of TPS7A85.

    Very Respectfully,

    Ryan

  • 0 in reply to Ryan Eslinger
    Guru 10200 points
    Ryan-san,

    Thank you for your reply.
    Our customer input voltage is 1.2V, thus BIAS rail is required.
    We will suggest effective capacitance 4.7uF or greater to BIAS pin from your answer.
    Please let me know if you have any concern about this.

    Best regards,
    Kohei Sasaki