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Linear Voltage Regulators

Linear voltage regulators are simple voltage regulator circuits designed to compare and maintain a steady constant output voltage with a precise reference voltage. These devices are comprised of resistors and diodes to maintain a steady voltage along their terminals. These devices are step-down converters; they keep the output voltage lower than the input. Some linear voltage types include regulators with the capacity to regulate voltage while the power supply voltage is close to the supply voltage.

How Do Linear Voltage Regulators Work?

For the maintenance of constant voltage across output terminals, the linear voltage regulators use a feedback loop (closed). They feature negative-feedback controlled transistors for generating specialized output voltages that remain stable, avoiding any fluctuations in input voltages and load currents.

What are the Benefits of Linear Voltage Regulators?

Linear voltage regulators offer various advantages. They are typically highly integrated, easy to use, have low input noise, and are low-cost with maximum flexibility. Furthermore, they offer less noise output than other regulators. 

Available Types of Linear Voltage Regulators

There are two types of linear voltage regulators based on the connection load: Series regulator and Shunt regulator.

  • Series Regulator: Connected in series with the load designed to stabilize the output voltage of a regulator.
  • Shunt Regulator: Connected in parallel to the load, designed to stabilize the output voltage of the device.

Where are Linear Voltage Regulators Used?

These regulators are mostly found in a wide variety of applications and multiple devices, such as:

  • Industrial applications
  • Automotive applications
  • Mobile phone
  • Computers
  • Laptops
  • Mobile chargers
  • TVs
  • Power generator systems
  • Solar panels/power plants

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DiodesZetex
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ZXTR2012Z-7, DiodesZetex
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Taiwan Semiconductor
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TS78L05CT A3G, Taiwan Semiconductor
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NJM79L05UA-TE1, New Japan Radio
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ON Semiconductor
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NCP4620HSQ25T1G, ON Semiconductor
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£ 0.067
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NCP7812TG, ON Semiconductor
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NCP4620HSQ12T1G, ON Semiconductor
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ON Semiconductor
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NCV8570BSN30T1G, ON Semiconductor
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£ 0.098
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MC78L05ACD, ON Semiconductor
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ADM7151ARDZ-02, Analog Devices
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NCV2951CDR2G, ON Semiconductor
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NCP4680DSQ15T1G, ON Semiconductor
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NCP512SQ30T2G, ON Semiconductor
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NCP502SQ28T2G, ON Semiconductor
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NCV8114ASN150T1G, ON Semiconductor
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NCV8161AMX180TBG, ON Semiconductor
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NCP512SQ22T2G, ON Semiconductor
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NCV8114ASN120T1G, ON Semiconductor
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NCP502SQ37T2G, ON Semiconductor
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MC7912ACTG, ON Semiconductor
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MC78L15ACPRAG, ON Semiconductor
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NCV8114ASN180T1G, ON Semiconductor
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NCV662SQ15T1G, ON Semiconductor
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MC78M18CDTG, ON Semiconductor

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MC79L12ACDG, ON Semiconductor

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MC78M15ABDTG, ON Semiconductor

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MAX17521ATG+, Maxim

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Reduces External Components and Total Cost No Schottky Synchronous Operation All-Ceramic Capacitors, Compact Layout Reduces Number of DC-DC Regulators to Stock Wide 4.5V to 60V Input Each Output Adjustable From 0.9V to 92%VIN Pin-Selectable 560kHz or 300kHz Switching Frequency Independent Input Voltage Pin for Each Output Reduces Power Dissipation Peak Efficiency > 90% PFM Mode Enables Enhanced Light-Load Efficiency 1μA Shutdown Current Operates Reliably in Adverse Industrial Environments Hiccup Mode Overload Protection Adjustable Soft-Start Pin for Each Output Built-In Output Voltage Monitoring with Active-Low RESET for Each Output Adjustable Threshold for Each Output Monotonic Startup Into Prebiased Load Overtemperature Protection High Industrial -40°C to +125°C Ambient Operating Temperature Range/-40°C to +150°C Junction Temperature Range Applications CPU, DSP, or FPGA Power Distributed Supply Regulation General-Purpose Point of Load Industrial Control Power Supplies
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BA178M12FP-E2, ROHM

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MAX8860EUA18+, Maxim

MAX8860EUA18+, Maxim

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MAX664ESA+, Maxim

MAX664ESA+, Maxim

Adjustable LDO (Low Dropout) Linear Voltage Regulators, Maxim Integrated LDO (Low Dropout) Linear Voltage Regulators, Maxim Integrated The Low dropout or LDO is a linear voltage regulator. We have a wide range of linear regulators. The LDO regulator can operate with a small input–output differential voltage. LDO voltage regulators may offer fast transient response, wide input voltage range, low quiescent current and low noise with high PSRR.
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LM337D2TG, ON Semiconductor

LM337D2TG, ON Semiconductor

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