nRF52810 Internal DC/DC regulator

[?????]

According to the nRF52810 datasheet,the reference circuitry with DC/DC regulator setup connet the pin DCC and the pin DEC4. Then how much is the voltage output of the pin DCC?
Will it be always 3V ? Are there any changes about the voltage output of the pin DEC4?

How much is the voltage output of the pin DCC if the supply voltage VDD varies from 1.7V to 3.6V

[Jørn]

Hello

As shown in figure 14, page 68 of the product specification (figure 2 in the link), the voltage at DEC4 will be 1.3 V. As this is the output of the regulator, it should not vary much even when the supply varies.

The voltage at DCC is not a DC voltage. It is part of the switch mode voltage regulator and the voltage will vary in a PWM like fashion. I am not sure what the exact peak voltage will be at the pin, or how it will vary if the supply varies.

Do keep in mind that you should not use DEC4 or the DCC pin to power or drive any external circuit as it can affect the operation of the regulator, and the chip.

Best regards

Jørn Frøysa