How to reduce the voltage from 3.8-4.2 to 3.3 volts?

Question

Electronics

I tried several different voltage stabilizers like AMS1117-3.3, but did not achieve any result.
The input current for these stabilizers requires about 5V, and I have a 3.8V battery, I wanted to power the ESP32 from it. If I connect via AMS1117, then the voltage drops to ~ 2.7, I would like to 3.3.
What voltage reduction options are available?
I would be grateful for help in solving.

Answer 1

The stabilizer in the documentation indicates what minimum input voltage should be in order for the output to be 3.3 volts.
need LDO stabilizer
https://www.aliexpress.com/item/32813195533.html

Answer 2

You need a buck-boost converter for lithium-ion batteries, for example, LTC3440

Answer 3

2 batteries in series
another DC battery
- DC converter
https://www.chipdip.ru/catalog-show/dc-dc-converters

Answer 4

You can not use converters.

Answer 5

From documentation:

The operating voltage of ESP32 ranges from 2.3 V to 3.6 V

So no problem.

Answer 6

For the right decision, input is not enough - load currents, desired efficiency (efficiency and operating time for a given battery capacity).
And 1117 of course will not work, because. requires a minimum input-output drop of 1.25 V, EMNIP.