voltaj fix

Yusuf's picture

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Joined: May 06, 2020

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voltaj fix
May 6, 2020 - 5:40am

I have Esp01s. I want to get a constant voltage between 3.0 and 3.6 with 3 alkaline batteries. The voltage of 1 alkaline battery is 1.5 volts. What is your suggestion?

Sourav Gupta's picture

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Joined: Feb 12, 2018

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Use LDO Regulator
May 6, 2020 - 12:54pm

In series 3 LDO will produce 3x1.5V = 4.5V.

Use an LDO of 3.3V.

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Joined: May 06, 2020

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Over time, the battery's
May 6, 2020 - 12:58pm

Over time, the battery's voltage decreases. If the voltage drops below 3.3, for example 1.7v. What should I do?

Sourav Gupta's picture

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Joined: Feb 12, 2018

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Use buck boost
May 7, 2020 - 10:52am

1.7-4.5V Input to 3.3V output buck-boost switching regulator with more than 85% efficiency.