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 Output Voltage Line Regulation Accuracy Load Regulation Mounting Type Polarity Package Type Quiescent Current Pin Count Reference Voltage
RS Stock No. 828-7426
Mfr. Part No.AP2210N-3.3TRG1
€0.154
Each (In a Pack of 100)
units
- 300mA Low Dropout Voltage 1 - 12 mV ±2% 30 mV Surface Mount Positive SOT-23 100µA 3 -
RS Stock No. 122-3364
Mfr. Part No.AP2210N-3.3TRG1
€0.072
Each (On a Reel of 3000)
units
- 300mA Low Dropout Voltage 1 - 12 mV ±2% 30 mV Surface Mount Positive SOT-23 100µA 3 -
RS Stock No. 533-8209
Mfr. Part No.LM317T/NOPB
€1.83
Each
units
- 1.5A Linear Voltage 1 - 0.04 %/V - 0.5 % Through Hole Positive TO-220 - 3 1.25V
RS Stock No. 100-5905
Mfr. Part No.LM317T/NOPB
€1.566
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
RS Stock No. 168-6809
Mfr. Part No.LM317T
€0.473
Each (In a Tube of 50)
units
- 1.5A Linear Voltage 1 1.2 → 37 V 0.04 %/V - 0.5 %, 0.5 %Vo, 25 mV%/Vo Through Hole Positive TO-220 - 3 1.25V
RS Stock No. 714-0792
Mfr. Part No.LM317T
€0.473
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
RS Stock No. 669-5014
Mfr. Part No.MCP1824T-3002E/OT
BrandMicrochip
€0.398
Each (In a Pack of 5)
units
- 300mA Low Dropout Voltage 1 - 0.05 %/V ±2.5% 0.5 % Surface Mount Positive SOT-23 0.12mA 5 -
RS Stock No. 165-4666
Mfr. Part No.MCP1824T-3002E/OT
BrandMicrochip
€0.271
Each (On a Reel of 3000)
units
- 300mA Low Dropout Voltage 1 3 V 0.05 %/V ±2.5% 0.5 % Surface Mount Positive SOT-23 0.12mA 5 -
RS Stock No. 168-6063
Mfr. Part No.L7812ACV
€0.515
Each (In a Tube of 50)
units
- 1A Linear Voltage 1 12 V 120 mV 2% 100 mV Through Hole Positive TO-220 4.4mA 3 -
RS Stock No. 298-8586
Mfr. Part No.L7812ACV
€0.63
Each
units
- 1A Linear Voltage 1 - 120 mV 2% 100 mV Through Hole Positive TO-220 4.4mA 3 -
RS Stock No. 168-6059
Mfr. Part No.L7805ACV
€0.556
Each (In a Tube of 50)
units
- 1A Linear Voltage 1 5 V 50 mV 2% 100 mV Through Hole Positive TO-220 4.3mA 3 -
RS Stock No. 298-8508
Mfr. Part No.L7805ACV
€0.69
Each
units
- 1A Linear Voltage 1 - 50 mV 2% 100 mV Through Hole Positive TO-220 4.3mA 3 -
RS Stock No. 655-622
Mfr. Part No.CSR2-6E
€32.60
Each
units
- 6A Linear Voltage - - - - - Panel Mount - - - 3 -
RS Stock No. 793-1355
Mfr. Part No.L7812CV-DG
€0.533
Each (In a Pack of 10)
units
- 1.5A Linear Voltage 1 - 50 mV - 100 mV Through Hole - TO-220 6mA 3 -
RS Stock No. 168-7135
Mfr. Part No.L7812CV-DG
€0.533
Each (In a Tube of 50)
units
- 1.5A Linear Voltage 1 12 V 50 mV - 100 mV Through Hole - TO-220 6mA 3 -
RS Stock No. 168-6578
Mfr. Part No.L78L33ABZ-AP
€0.13
Each (On a Tape of 2000)
units
- 100mA Linear Voltage 1 3.3 V 150 mV - 60 mV Through Hole Positive TO-92 6mA 3 -
RS Stock No. 125-0050
Mfr. Part No.MC7806CTG
Brandonsemi
€0.464
Each (In a Tube of 50)
units
- 2.2A Linear Voltage 1 6 V 24 mV ±4% 30 mV Through Hole Positive TO-220 3.3mA 3 -
RS Stock No. 102-5703
Mfr. Part No.LM317HVT/NOPB
€2.126
Each (In a Tube of 45)
units
- 1.5A Linear Voltage 1 - 0.04 %/V - 0.5 % Through Hole Positive TO-220 - 3 1.3V
RS Stock No. 438-4885
Mfr. Part No.LD1117V33
€0.501
Each (In a Tube of 50)
units
- 1.3A Low Dropout Voltage 1 - 6 mV ±1% 10 mV Through Hole Positive TO-220 5mA 3 -
RS Stock No. 686-9552
Mfr. Part No.L78L33ABZ-AP
€0.342
Each (In a Pack of 25)
units
- 100mA Linear Voltage 1 - 150 mV - 60 mV Through Hole Positive TO-92 6mA 3 -