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LM63635-Q1: DESIGN REVIEW

Part Number: LM63635-Q1

Hello,

Kindly review the attached design using LM63635DQDRRRQ1
Thanks,

Melbin

LM63635DQDRRRQ1_SCH_28DEC2020.pdf

  • Hi Melbin,

    For 1.05V rail:

    1. Fsw should be 1MHz or lower

    2. L54=1.2uH 5A for Fsw=1MHz

    3. C1260/1261 should be low ESR solid cap, or use 47uF 3.3V or 6.3V ceramic cap.

    For 5V rail:

    1. L55=1.5uH 5A

    2. L1269 should be 16V or higher rating.

    B R

    Andy