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 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.

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 that 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. 918-1971
Mfr. Part No.L7805CV
$1.029
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. 714-0792
Mfr. Part No.LM317T
$1.315
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. 168-6809
Mfr. Part No.LM317T
$0.932
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. 189-1295
Mfr. Part No.L78L05ACZ
$0.76
Each
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
$0.182
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. 102-3529
Mfr. Part No.L78L05ACZTR
$0.16
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. 714-7768
Mfr. Part No.L78L05ACZTR
$0.434
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. 168-6062
Mfr. Part No.L7824CV
$0.864
Each (In a Tube of 50)
units
- 1.5A Linear Voltage 1 480 mV - 480 mV Through Hole Positive TO-220 8mA 3 - Fixed
RS Stock No. 686-9754
Mfr. Part No.L7915CP
$1.514
Each (In a Pack of 10)
units
- 1.5A Linear Voltage 1 300 mV - 300 mV Through Hole Negative TO-220FP 3mA 3 - Fixed
RS Stock No. 298-8564
Mfr. Part No.L7824CV
$0.92
Each
units
- 1.5A Linear Voltage 1 480 mV - 480 mV Through Hole Positive TO-220 8mA 3 - Fixed
RS Stock No. 178-1481
Mfr. Part No.L7915CP
$1.173
Each (In a Tube of 50)
units
- - - - - - - - - - - - - -
RS Stock No. 686-9366
Mfr. Part No.LD1117S12CTR
$0.706
Each (In a Pack of 25)
units
- 1.3A Low Dropout Voltage 1 1 % ±1% 1 % Surface Mount Positive SOT-223 - 3+Tab 1.224V Fixed
RS Stock No. 165-7744
Mfr. Part No.LD1117S12CTR
$0.312
Each (On a Reel of 2500)
units
- 1.3A Low Dropout Voltage 1 1 % ±1% 1 % Surface Mount Positive SOT-223 - 3+Tab 1.224V Fixed
RS Stock No. 686-9767
Mfr. Part No.LD1117V33C
$0.802
Each (In a Pack of 10)
units
- 1.3A Low Dropout Voltage 1 30 mV ±1% 30 mV Through Hole Positive TO-220 5mA 3 - Fixed
RS Stock No. 168-6597
Mfr. Part No.LD1117V33C
$0.718
Each (In a Tube of 50)
units
- 1.3A Low Dropout Voltage 1 30 mV ±1% 30 mV Through Hole Positive TO-220 5mA 3 - Fixed
RS Stock No. 686-9022
Mfr. Part No.L78S18CV
$1.319
Each (In a Pack of 10)
units
- 2A Linear Voltage 1 360 mV - 360 mV Through Hole Positive TO-220 8mA 3 - Fixed
RS Stock No. 145-9195
Mfr. Part No.L78S18CV
$1.184
Each (In a Tube of 50)
units
- 2A Linear Voltage 1 360 mV - 360 mV Through Hole Positive TO-220 8mA 3 - Fixed
RS Stock No. 168-5783
Mfr. Part No.L7805CP
$1.25
Each (In a Tube of 50)
units
- 1.5A Linear Voltage 1 100 mV - 100 mV Through Hole Positive TO-220FP 8mA 3 - Fixed
RS Stock No. 793-1355
Mfr. Part No.L7812CV-DG
$1.259
Each (In a Pack of 10)
units
- 1.5A Linear Voltage 1 50 mV - 100 mV Through Hole - TO-220 6mA 3 - Fixed
RS Stock No. 296-756
Mfr. Part No.L7805CP
$1.64
Each
units
- 1.5A Linear Voltage 1 100 mV - 100 mV Through Hole Positive TO-220FP 8mA 3 - Fixed