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LP8758-B0: LP8758 POL capacitor

Sammi Shang
Expert 4450 points
Part Number: LP8758-B0
Other Parts Discussed in Thread: LP8758

Dear team,

Why do LP8758 need an extra POL capacitor? Is it a necessary?

Thanks.

Best regards,

Sammi

  • 0
    TI__Mastermind 40931 points

    Hi, Sammi,

      It's not necessary; it's only needed when load needs better power supply performance; like lower ripple which is mainly caused by the IR drop between load and the PMIC output; also, the CPOL can improves the load step behavior and decreases the PFM switching frequency.