1-7. Principle of operation of series regulators

Figure 1.7.1 Principle of operation of series regulators

A series regulator is placed between a power supply and a load. It regulates the output voltage by adjusting the value of a variable resistor according to changes in input voltage or output current.

Figure 1.7.2 In response to changes in input voltage and In response to changes in output current

Series regulator ICs use an active device such as a MOSFET or a bipolar junction transistor instead of a variable resistor.

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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1-3. What is an LDO regulator?
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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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1-8. 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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