Does the SNVS voltage from PF8101 have internal sensing and monitoring ?

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Does the SNVS voltage from PF8101 have internal sensing and monitoring ?

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deepaknath
Contributor I

The SNVS voltage is the output from VIN of the PMIC:  PF8101. Is there an internal monitoring in the PMIC itself to monitor the SNVS voltage. If the SNVS becomes 0V will the PMIC send POR signal to the controller

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igorpadykov
NXP Employee
NXP Employee

Hi Deepak

I am afraid there is no such monitoring and if SNVS becomes 0V PMIC does not

send POR signal to the controller. As described in sect.15.3 VSNVS LDO/switch PF8100 PF8200 Datasheet:
The VSNVS output keeps regulation through all states, including the system-on, off
modes, power down sequence, watchdog reset, fail-safe transition and fail-safe state as
long as it has a valid input (VIN or LICELL), and the output has been configured by the
OTP_VSNVSVOLT[1:0] registers.
https://www.nxp.com/docs/en/data-sheet/PF8100_PF8200.pdf

Best regards
igor
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