1-3. What is an LDO regulator?

An LDO regulator is a type of semiconductor voltage regulator that is used when the required output voltage differs from the input voltage.
Suppose, for example, that the input voltage is 5 V and that the required output voltage is 3 V. In such cases, LDO regulators provide a simple and inexpensive solution for power supply regulation.
A voltage regulator with a small difference in voltage between input and output is called an LDO regulator. LDO stands for low dropout; an LDO regulator is a type of linear regulator with a low input-output voltage differential.
This article describes why electronic devices require LDO regulators for stable operation and provides an overview of them.

Chapter1 Introduction to Low-Dropout (LDO) Regulators

1-1. Types of voltage regulator ICs
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1-2. Advantages and disadvantages of linear regulators and switching regulators
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1-4. Need of LDO regulators for electronic systems
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1-5. What is a linear regulator?
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1-6. Operations of linear and switching regulators
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1-7. Principle of operation of series regulators
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1-8. Circuit configuration of a series regulator
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1-9. Differences between a three-terminal voltage regulator and an LDO regulator
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Back to Basics of Low-Dropout (LDO) Regulators

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