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. 793-1346
Mfr. Part No.L7805CV-DG
MYR2.136
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. 102-9429
Mfr. Part No.L7805CV-DG
MYR2.09
Each (In a Tube of 50)
units
- 1.5A Linear Voltage 1 50 mV - 100 mV Through Hole - TO-220 6mA 3 - Fixed
RS Stock No. 168-6809
Mfr. Part No.LM317T
MYR2.507
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
MYR2.809
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. 168-6559
Mfr. Part No.L7805CDT-TR
MYR1.166
Each (On a Reel of 2500)
units
- 1.5A Linear Voltage 1 100 mV - 100 mV Surface Mount Positive DPAK 8mA 3 - Fixed
RS Stock No. 686-9221
Mfr. Part No.L7805CDT-TR
MYR2.772
Each (In a Pack of 10)
units
- 1.5A Linear Voltage 1 100 mV - 100 mV Surface Mount Positive DPAK 8mA 3 - Fixed
RS Stock No. 168-6536
Mfr. Part No.L78S75CV
MYR3.213
Each (In a Tube of 50)
units
- 2A Linear Voltage 1 120 mV - 140 mV Through Hole Positive TO-220 8mA 3 - Fixed
RS Stock No. 686-9026
Mfr. Part No.L78S75CV
MYR3.213
Each (In a Pack of 10)
units
- 2A Linear Voltage 1 120 mV - 140 mV Through Hole Positive TO-220 8mA 3 - Fixed
RS Stock No. 918-1975
Mfr. Part No.L7812CV
MYR1.607
Each (In a Tube of 50)
units
- 1.5A Linear Voltage 1 240 mV - 240 mV Through Hole Positive TO-220 8mA 3 - Fixed
RS Stock No. 918-1971
Mfr. Part No.L7805CV
MYR1.827
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. 165-6864
Mfr. Part No.LD1086D2M33TR
MYR2.174
Each (On a Reel of 1000)
units
- 1.5A Low Dropout Voltage 1 6 mV ±1% 10 mV Surface Mount Positive D2PAK 10mA 3 - Fixed
RS Stock No. 795-8776
Mfr. Part No.LD1086D2M33TR
MYR3.371
Each (In a Pack of 10)
units
- 1.5A Low Dropout Voltage 1 6 mV ±1% 10 mV Surface Mount Positive D2PAK 10mA 3 - Fixed
RS Stock No. 168-6804
Mfr. Part No.LD1117S33TR
MYR0.622
Each (On a Reel of 2500)
units
- 1.3A Low Dropout Voltage 1 6 mV ±1% 10 mV Surface Mount Positive SOT-223 5mA 3+Tab - Fixed
RS Stock No. 795-9050
Mfr. Part No.LD1085V
MYR5.776
Each (In a Pack of 5)
units
- 3A Low Dropout Voltage 1 0.2 % ±1% 0.3 % Through Hole Positive TO-220 - 3 1.225 → 1.275V Adjustable
RS Stock No. 168-7733
Mfr. Part No.LD1085V
MYR4.904
Each (In a Tube of 50)
units
- 3A Low Dropout Voltage 1 0.2 % ±1% 0.3 % Through Hole Positive TO-220 - 3 1.225 → 1.275V Adjustable
RS Stock No. 714-0697
Mfr. Part No.LD1117S33TR
MYR1.848
Each (In a Pack of 10)
units
- 1.3A Low Dropout Voltage 1 6 mV ±1% 10 mV Surface Mount Positive SOT-223 5mA 3+Tab - Fixed
RS Stock No. 102-3530
Mfr. Part No.L78S05CV
MYR1.732
Each (In a Tube of 50)
units
- 2A Linear Voltage 1 100 mV - 100 mV Through Hole Positive TO-220 8mA 3 - Fixed
RS Stock No. 714-7783
Mfr. Part No.L78S12CV
MYR2.854
Each (In a Pack of 10)
units
- 2A Linear Voltage 1 240 mV - 240 mV Through Hole Positive TO-220 8mA 3 - Fixed
RS Stock No. 168-6049
Mfr. Part No.L78L05ACZ
MYR0.434
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
MYR0.417
Each (On a Reel of 2000)
units
- 100mA Linear Voltage 1 150 mV ±5% 60 mV Through Hole Positive TO-92 6mA 3 - Fixed