i.MX53 PMIC Options

JohnMcCosh — Thu, 14 Mar 2013 23:53:53 GMT

Hello,

I am starting a new i.MX design with features similar to the Quick Start Board (DDR3, Tough Screen, Ethernet, USB-OTG), but battery powered and charged via the USB-OTG port. I am considering using either the MC34709 PMIC or the MC13783 PMIC - Audio Device. Has anyone looked into these compinations? Thoughts and comments are welcomed.

John

Re: i.MX53 PMIC Options

weidong_sun — Fri, 15 Mar 2013 00:36:30 GMT

Hello,John,

you have 2 optional PMICs for your design based on i.MX53 :

(1)MC34708

(2)MC34709

When you desigh your schematic, please pay attention to the following points:

(1)Using DIG_PLL_INT to supply VDDAL

(2)Using a LDO(3V->1.5V) to supply VDDLP on MC34708

This patch can be found in mc34708 errata.

These 2 steps are used to correct the issue of SRTC in i.MX53 (Ensure SRTC can hold correct time after cold reset)

Regards,

Weidong

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i.MX53 PMIC Options

Re: i.MX53 PMIC Options