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DIIDevHeads IoT Integration Server
•Created by Umesh Lokhande on 2/6/2024 in #firmware-and-baremetal
How do I calculate the battery life of ESP8266-based products?
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LDO doesn't really "consume" current. The current going in at the entrance is the same current that leaves the exit of the LDO. It just brings the voltage down (eg. from 5V to 3V3) and turns the surplus energy into heat.
A switched voltage converter would be more efficient. It can bring the voltage down, while preserving the ingoing energy. For example: a 1A going in at 5V could then theoretically result in a 1.5A at 3V3 at the exit (if efficiency would be 100%, which is of course impossible).
So the efficiency of a switched voltage converter is considerably higher compared to an LDO. However, the downside is that it injects noise in your circuit.22 replies