https://community.nxp.com/t5/i-MX-Processors/PMIC-PF3000-minimum-input-for-VSNVS-on/m-p/720113#M111952 <HTML><HEAD></HEAD><BODY><P>Hi Franky </P><P></P><P>VSNVS output derives its power from either VIN using LDO, or coin cell.</P><P>LDO is used wnen&nbsp;VIN &gt; VTH1 as described in sect.6.3.11 VSNVS LDO/switch,</P><P>Table 67. SNVS modes of operation, VTH1=2.75V (typ.), Table 16. Dynamic electrical</P><P>characteristics - VSNVS PF3000 Datasheet <BR /><A class="link-titled" href="https://www.nxp.com/docs/en/data-sheet/PF3000.pdf" title="https://www.nxp.com/docs/en/data-sheet/PF3000.pdf">https://www.nxp.com/docs/en/data-sheet/PF3000.pdf</A>&nbsp;</P><P>When powered by coin cell, the VSNVS output tracks the coin cell voltage by means of a switch.</P><P></P><P>Best regards<BR />igor<BR />-----------------------------------------------------------------------------------------------------------------------<BR />Note: If this post answers your question, please click the Correct Answer button. Thank you!<BR />-----------------------------------------------------------------------------------------------------------------------</P></BODY></HTML> Wed, 21 Mar 2018 08:11:12 GMT igorpadykov 2018-03-21T08:11:12Z https://community.nxp.com/t5/i-MX-Processors/PMIC-PF3000-minimum-input-for-VSNVS-on/m-p/720112#M111951 <HTML><HEAD></HEAD><BODY><P>Hi</P><P></P><P>We are checking the PMIC minimum vin and we found when we set Vin=2.8V, the VSNVS output will be off. We have checked the PF3000 EVB and got the same symptom. In the datasheet, the minimum Vin should be 2.25V. Why is the VSNVS turned off @Vin=2.8V?&nbsp; </P><P></P><P><span class="lia-inline-image-display-wrapper" image-alt="pastedImage_1.png"><img src="https://community.nxp.com/t5/image/serverpage/image-id/50025i50C3FB10EEA9F14B/image-size/large?v=v2&amp;px=999" role="button" title="pastedImage_1.png" alt="pastedImage_1.png" /></span></P></BODY></HTML> Wed, 21 Mar 2018 06:22:18 GMT https://community.nxp.com/t5/i-MX-Processors/PMIC-PF3000-minimum-input-for-VSNVS-on/m-p/720112#M111951 frankyhsu 2018-03-21T06:22:18Z https://community.nxp.com/t5/i-MX-Processors/PMIC-PF3000-minimum-input-for-VSNVS-on/m-p/720113#M111952 <HTML><HEAD></HEAD><BODY><P>Hi Franky </P><P></P><P>VSNVS output derives its power from either VIN using LDO, or coin cell.</P><P>LDO is used wnen&nbsp;VIN &gt; VTH1 as described in sect.6.3.11 VSNVS LDO/switch,</P><P>Table 67. SNVS modes of operation, VTH1=2.75V (typ.), Table 16. Dynamic electrical</P><P>characteristics - VSNVS PF3000 Datasheet <BR /><A class="link-titled" href="https://www.nxp.com/docs/en/data-sheet/PF3000.pdf" title="https://www.nxp.com/docs/en/data-sheet/PF3000.pdf">https://www.nxp.com/docs/en/data-sheet/PF3000.pdf</A>&nbsp;</P><P>When powered by coin cell, the VSNVS output tracks the coin cell voltage by means of a switch.</P><P></P><P>Best regards<BR />igor<BR />-----------------------------------------------------------------------------------------------------------------------<BR />Note: If this post answers your question, please click the Correct Answer button. Thank you!<BR />-----------------------------------------------------------------------------------------------------------------------</P></BODY></HTML> Wed, 21 Mar 2018 08:11:12 GMT https://community.nxp.com/t5/i-MX-Processors/PMIC-PF3000-minimum-input-for-VSNVS-on/m-p/720113#M111952 igorpadykov 2018-03-21T08:11:12Z