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Q&A Are LDOs more efficient than switching regulators in very low currents?

I'm looking for a power supply to power up the VCORE of an mcu. The chip is an STM32 microcontroller (LQFP) and the maximum current it will draw is no more than 150mA. The input will be 3V-5V max...

3 answers · posted 4mo ago by DeadMouse‭ · last activity 3mo ago by TonyStewart‭

Question voltage-regulator LDO-regulator

#2: Post edited by

DeadMouse‭ · 2024-07-06T05:54:40Z (4 months ago)

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~~Are LDOs more efficient that switching regulators in very low currents?~~

Are LDOs more efficient than switching regulators in very low currents?

#1: Initial revision by

DeadMouse‭ · 2024-07-06T05:51:54Z (4 months ago)

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Are LDOs more efficient that switching regulators in very low currents?

I'm looking for a power supply to power up the VCORE of an mcu.  
The chip is an STM32 microcontroller (LQFP) and the maximum current it will draw is no more than 150mA.

The input will be 3V-5V max and the output 1.2V  

I usually go with LDO even for the whole chip power but in this case I need something very efficient to extend the battery life as much as possible.

voltage-regulator LDO-regulator

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