i.MX6UL VHIGH SHORTED WITH SNVS

[nachodiz]

Dear all

For final design with I.MX6UL + PF3001A7 i want to short SNVS with VDDHIGH

I placed an external always ON LDO because PMIC SNVS provides only 1mA and the PMIC V33 LDO out is not always on (is part of secuence) and is not suitable to pullup the PMIC ON REC domain

I placed a 400 mA always ON LDO @ 3.3V for generating a ultra power SNVS AND VHIGH Voltage Source (+3.3V ALWAYS)

Its better to use a 3.0V LDO or can i go with 3.3V LDO?

Do i need any kind of Schotkky Diode?

NOTE: peripherials are powered from PMIC DCDC, 3.3VALWAYS ITS ONLY USED TO SUPPLY A SMALL PIC MCU AND SNVS AND VHIGH

kING rEGARDS

[igorpadykov]

Hi Nacho

>Its better to use a 3.0V LDO or can i go with 3.3V LDO?

all values are fine as both VDD_SNVS_IN and VDD_HIGH_IN

suitable according to Table 11. Operating Ranges

http://www.nxp.com/docs/en/data-sheet/IMX6ULCEC.pdf 

Best regards
igor
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