Voltage Regulators

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.

Voltage regulators are essential in electronic circuits that include components which require a particular voltage input. For example, a processor. Input voltage, output voltage and output current are all important things to consider when choosing an voltage regulator IC.

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).

Types of voltage regulator:

  • Buck Boost Switching Regulator
  • Charge Pump
  • Linear Voltage Regulator
  • LDO (Low Dropout) Voltage Regulator

Where are voltage regulators used?

Voltage regulators are found in most electronics circuits which require voltage management or voltage regulation. This includes chargers, power supply units (PSUs), telecommunications and automotive applications.


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Description Price Regulator Function Maximum Output Current Regulator Type Number of Outputs Line Regulation Accuracy Load Regulation Mounting Type Polarity Package Type Quiescent Current Pin Count Reference Voltage Output Type
RS Stock No. 168-6809
Mfr. Part No.LM317T
£0.395
Each (In a Tube of 50)
Units
- 1.5A Linear Voltage 1 0.04 %/V - 0.5 %, 0.5 %Vo, 25 mV%/Vo Through Hole Positive TO-220 - 3 1.25V Adjustable
RS Stock No. 714-0792
Mfr. Part No.LM317T
£0.395
Each (In a Pack of 10)
Units
- 1.5A Linear Voltage 1 0.04 %/V - 0.5 %, 0.5 %Vo, 25 mV%/Vo Through Hole Positive TO-220 - 3 1.25V Adjustable
RS Stock No. 918-1971
Mfr. Part No.L7805CV
£0.308
Each (In a Tube of 50)
Units
- 1.5A Linear Voltage 1 100 mV - 100 mV Through Hole Positive TO-220 8mA 3 - Fixed
RS Stock No. 460-900
Mfr. Part No.LM338T/NOPB
£1.642
Each (In a Pack of 5)
Units
- 5A Linear Voltage 1 0.03 %/V - 0.5 % Through Hole Positive TO-220 - 3 1.29V Adjustable
RS Stock No. 100-0719
Mfr. Part No.LM338T/NOPB
£1.397
Each (In a Tube of 45)
Units
- 5A Linear Voltage 1 0.03 %/V - 0.5 % Through Hole Positive TO-220 - 3 1.29V Adjustable
RS Stock No. 168-6059
Mfr. Part No.L7805ACV
£0.371
Each (In a Tube of 50)
Units
- 1A Linear Voltage 1 50 mV 2% 100 mV Through Hole Positive TO-220 4.3mA 3 - Fixed
RS Stock No. 298-8508
Mfr. Part No.L7805ACV
£0.45
Each
Units
- 1A Linear Voltage 1 50 mV 2% 100 mV Through Hole Positive TO-220 4.3mA 3 - Fixed
RS Stock No. 714-7768
Mfr. Part No.L78L05ACZTR
£0.253
Each (In a Pack of 25)
Units
- 100mA Linear Voltage 1 150 mV ±5% 60 mV Through Hole Positive TO-92 6mA 3 - Fixed
RS Stock No. 102-3529
Mfr. Part No.L78L05ACZTR
£0.079
Each (On a Reel of 2000)
Units
- 100mA Linear Voltage 1 150 mV ±5% 60 mV Through Hole Positive TO-92 6mA 3 - Fixed
RS Stock No. 168-6049
Mfr. Part No.L78L05ACZ
£0.073
Each (In a Bag of 2500)
Units
- 100mA Linear Voltage 1 150 mV ±5% 60 mV Through Hole Positive TO-92 6mA 3 - Fixed
RS Stock No. 189-1295
Mfr. Part No.L78L05ACZ
£0.30
Each
Units
- 100mA Linear Voltage 1 150 mV ±5% 60 mV Through Hole Positive TO-92 6mA 3 - Fixed
RS Stock No. 714-0666
Mfr. Part No.L7809CV
£0.281
Each (In a Pack of 10)
Units
- 1.5A Linear Voltage 1 180 mV 2% 180 mV Through Hole Positive TO-220 8mA 3 - Fixed
RS Stock No. 168-6797
Mfr. Part No.L7809CV
£0.281
Each (In a Tube of 50)
Units
- 1.5A Linear Voltage 1 180 mV 2% 180 mV Through Hole Positive TO-220 8mA 3 - Fixed
RS Stock No. 124-1691
Mfr. Part No.LM350T
£0.872
Each (In a Tube of 50)
Units
- 3A Linear Voltage 1 0.03 %/V - 0.5 % Through Hole Positive TO-220AB - 3 1.3V Adjustable
RS Stock No. 168-6061
Mfr. Part No.L7815CV
£0.308
Each (In a Tube of 50)
Units
- 1.5A Linear Voltage 1 300 mV - 300 mV Through Hole Positive TO-220 8mA 3 - Fixed
RS Stock No. 298-8558
Mfr. Part No.L7815CV
£0.39
Each
Units
- 1.5A Linear Voltage 1 300 mV - 300 mV Through Hole Positive TO-220 8mA 3 - Fixed
RS Stock No. 533-8209
Mfr. Part No.LM317T/NOPB
£1.56
Each
Units
- 1.5A Linear Voltage 1 0.04 %/V - 0.5 % Through Hole Positive TO-220 - 3 1.25V Adjustable
RS Stock No. 100-5905
Mfr. Part No.LM317T/NOPB
£1.326
Each (In a Tube of 45)
Units
- 1.5A Linear Voltage 1 0.04 %/V - 0.5 % Through Hole Positive TO-220 - 3 1.25V Adjustable
RS Stock No. 714-7780
Mfr. Part No.L78S05CV
£0.458
Each (In a Pack of 10)
Units
- 2A Linear Voltage 1 100 mV - 100 mV Through Hole Positive TO-220 8mA 3 - Fixed
RS Stock No. 102-3530
Mfr. Part No.L78S05CV
£0.458
Each (In a Tube of 50)
Units
- 2A Linear Voltage 1 100 mV - 100 mV Through Hole Positive TO-220 8mA 3 - Fixed