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LVDO or DC-DC converter

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sudil99

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I need a 5V and 1A supply for my portable device. I am thinking of using 5 * 1.2 V NiMH batteries.

Which regulator shall I use: Low voltage dropout or DC-DC converter ?
 

How is the efficiency of LDO ? Is it better than DC-DC converters?
 
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    valuty

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Switching regulators benefit from having high power efficiency, between 80-95%, and by the other hand the efficiency for the LDO is limited by the quiescent current flow and the Input/Output voltages. LDOs are better suited for may applications than DC-DC converters because of lower cost, complexity and output noise.
 
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