Wireless MCU中的主题 Re: PN7150 working without battery.

PN7150 working without battery.

dominusdrr — Tue, 15 Mar 2022 14:16:24 GMT

Hi.

I'm developing a PCB circuit with a microcontroller and the NFC PN7150.

My hardware doesn't need a battery to work, so my question is:

Do the battery related pins VBAT1, VBAT2 and VBAT need to be connected to a 5V source or can they be left unused?

I can't find any information on that subject, so it is assumed that there will always be a backup battery.

Any comment or suggestion is welcome

Re: PN7150 working without battery.

fangfang — Wed, 16 Mar 2022 01:46:55 GMT

Hello @dominusdrr .

Thank you for contacting NXP technical support.

>> Do the battery related pins VBAT1, VBAT2 and VBAT need to be connected to a 5V source or can they be left unused?

Need to be connected to a 5V source.

Please kindly refer to the 12.5.3.2 Configuration 2: supply connection in case a 5 V supply is used to generate RF field with the use of TXLDO of the datasheet as the link.

URL:https://www.nxp.com/docs/en/data-sheet/PN7150.pdf.

Have a nice day.

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Re: PN7150 working without battery.

dominusdrr — Wed, 16 Mar 2022 13:52:06 GMT

Hi.

Thanks for your help.