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CC2640R2F: Inductor requirement for DCDC_SW

Part Number: CC2640R2F

Hi team,

Please let us know the inductor requirement for the DCDC_SW pin. 

Please check whether this part can be used LQM18DZ6R8M70L

  • Hi,

    When using the CC2640R2F in a design, it is highly recommend to use the LAUNCHXL-CC2640R2F as a reference. With regards to the DCDC_SW pin, it is recommended to use an 10uH inductor and set up the net as shown below:

    In the reference design, L1 is a Taiyo Yuden CKS2125100M-T which has the following description in the BOM:

    INDUCTOR, CHIP, 10uH, -20%/+20%, 0.11A, -40DEGC/+85DEGC, 0805, SMD

    Comparing it to the provided component, there are several differences particularly in the package size, inductance, current rating, DCR, and frequency. I would recommend either using the Taiyo Yuden CKS2125100M-T or finding an equivalent replacement. Using an inductor with different properties as the one used in the reference design may lead to a loss in performance or unexpected behavior when compared to the reference design.

    Best Regards,

    Jan