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<p>Voltage regulators are ICs used to generate a stable and consistent voltage within a circuit. They take an input voltage and convert this into a fixed output voltage. Even if the input voltage changes, the regulator will continue to provide the same output. The voltage regulator will take the output voltage and compare it to a reference voltage. It will then adjust the pass device to help manage the output voltage. This helps to regulate the voltage throughout a circuit design, dependant on where the voltage regulator(s) are.</p><p>Voltage regulators are essential in electronic circuits that include components that require a particular voltage input. For example, a processor. The input voltage, output voltage and output current are all important things to consider when choosing a voltage regulator IC.</p><p>Voltage regulators cannot convert the voltage from AC to DC, for example. If you require voltage conversion to run in parallel to your voltage regulator, please see our range of Digital to Analogue Converters (DACs) or Analogue to Digital Converters (ADCs).</p><h2>Types of voltage regulator</h2><ul><li>Buck-Boost Switching Regulator</li><li>Charge Pump</li><li>Linear Voltage Regulator</li><li>LDO (Low Dropout) Voltage Regulator</li></ul><h3>Where are voltage regulators used?</h3><p>Voltage regulators are found in most electronics circuits that require voltage management or voltage regulation. This includes chargers, power supply units (PSUs), telecommunications and automotive applications.</p>

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Voltage Regulators | Linear & Switching | LDO Regulator | RS

Voltage Regulators

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Linear Voltage Regulators | RS

<p>A Linear Voltage Regulator ensures the output voltage from the circuit is maintained at a specific voltage. The device acts as a variable resistor, continuously adjusting to maintain a constant output voltage. The regulated voltage must be lower than the input voltage. Linear voltage regulators are step-down converters which means that the output voltage is lower that the input. Simple voltage regulator contains a Zener Diode and a resistor but more complicated versions include elements like a voltage reference and error amplifiers.</p><p>A more specific type of regulator are Low Dropout Voltage Regulators (LDO) which can regulate voltage even when the power supply voltage is very close to the supply voltage. They have low noise and good ripple rejection making them crucial to maintaining a stable power supply in any power-management system.</p>

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Holtek Voltage Regulators | RS Components

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Low Dropout Regulator | LDO Low Dropout Regulator | LDO Regulator

<p>A Low Dropout Voltage Regulator (LDO) is a type of linear voltage regulator that can regulate the output voltage even when the voltage drop between the input and output is very small often less than 0.2V. This feature differs from standard voltage regulators that need a significant voltage difference between the input and output to regulate properly. Low Dropout Regulators offer good stability and regulation of the output voltage and excellent transient response being able to respond quickly to changes in load conditions. LDO regulators provide a steady power supply for sensitive electronic components where the power source is close to the required output voltage, such as in battery-powered devices, where maximizing battery life is important. </p>

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Analog Devices Voltage Regulators | RS

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Low Dropout Regulator | LDO Low Dropout Regulator | LDO Regulator

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