The power consumption in MKW3xA Datasheet

MarioC — Thu, 14 Aug 2025 03:35:17 GMT

The power consumption on the first page in datasheet is

Transceiver current (DC-DC buck mode, 3.6 V supply)
• Typical Rx Current: 6.3 mA
• Typical Tx current: 5.7 mA (0 dBm output)

Accoording to the page 44 and 45, it's seems the power consumption is higher then above,

even on STOP mode with buck converter, RX is 8.5mA, Tx at 0dBm is 7.8mA.

is there any different with page2 and page 44, 45 power consumption data? thanks.

Re: The power consumption in MKW3xA Datasheet

sofiaurueta — Fri, 15 Aug 2025 17:24:58 GMT

Hello,

Hope you are doing well.

The difference in the values is due to the measurement scope:

The lower values seen at the beginning of the Data Sheet (Rx = 6.3mA, Tx = 5.7mA) are RF-only power consumption specifications, which means they refer to the consumption of the 2.4 GHz radio only.

The full KW39/38/37 SoC power consumption (section 6.2.7) is a function of the many possible configurations possible for the MCU platform and its peripherals including the 2.4 GHz radio and the DC-DC converter. Table 17 shows some measured SoC configurations in specific operating modes.

Best Regards,

Ana Sofia.

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The power consumption in MKW3xA Datasheet

Re: The power consumption in MKW3xA Datasheet