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ADP5052 maximum output voltage when PVIN 5V for channels 3 and 4

Question asked by sherif123 on Oct 13, 2016
Latest reply on Oct 16, 2016 by hyao

I created a custom board to test the ADP5052 buck regulator.

The output voltage for the stages I want is good except for 1 channel which does not correctly work untill the input voltage is more than 5V. If the voltage is lower,ex, 4.8, the output voltage drops linearly under the voltage requried (3V).

I found an equation in the datasheet that talks about this but when I use it, the maximum output voltage is around 4V. I cannot generate 3V unless the input voltage is more than 5V. I am afraid that the system may have 4.8 to 5V input supply.

Any help?

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