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Fixed +5 V low-dropout regulator

LM2940T-5 Working Principle

Learn how LM2940T-5 works with an illustrated explanation and practical readings.

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LM2940T-5 at a glance

Follow the labeled connections and functional stages

LM2940T-5 working principle: illustrated functional stages, basic circuit and connections
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How it works

3 stages · Explore one step at a time

Step 1 / 3

Reference

The internal reference establishes the desired output level.

Step 2 / 3

Regulate

The feedback amplifier controls the series pass stage.

Step 3 / 3

Dissipate heat

Voltage drop and ground current generate heat that must leave the package.

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