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Optional LDO in i.MX6QSDP schematic

Question asked by torus1000 on Aug 17, 2015
Latest reply on Aug 17, 2015 by Yuri Muhin

Dear chip experts,

 

According to the SPF-27392_C4.pdf schematics, I tried to replace VGEN5 supply with optional LDO.

This LDO meets the additional current requirement but I worry about the startup timing.

 

- Is there any timing restrictions for LDO startup like VGEN5 startup sequece?
- If yes, in order to meet the timing, is it OK to input VGEN5 to the LDO pin5(SHDN*) instead of SYS_4V2?
- Does this option circuit already comfirmed and it worked if  R32(0 ohrm) mounted ?

 

Can anybody help me?

 

Thanks.

opt_ldo.png

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