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100 mA low-dropout fixed regulator

LP2950-3.3 Working Principle

Learn how LP2950-3.3 works with an illustrated explanation and practical readings.

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LP2950-3.3 at a glance

Follow the labeled connections and functional stages

LP2950-3.3 working principle: illustrated functional stages, basic circuit and connections
Select the diagram to read it at full resolution.

How it works

3 stages · Explore one step at a time

Step 1 / 3

Choose the physical package

TO-92 and TO-252 exchange the IN and OUT pin numbers. The SMD tab belongs to GND.

Step 2 / 3

Stabilize the rail

Place the specified output capacitor close to OUT and GND. Verify effective capacitance and ESR over temperature.

Step 3 / 3

Account for all heat

Use PD=(VIN−VOUT)×ILOAD+VIN×IGND. Ground current rises substantially near full load.

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