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. 655-644
Mfr. Part No.CSR2-15E
£38.96
Each
Units
- 15A Linear Voltage - - - - Panel Mount - - - 3 - Adjustable
RS Stock No. 403-888
Mfr. Part No.MCP1700-3302E/TO
BrandMicrochip
£0.296
Each (In a Pack of 10)
Units
- 250mA Low Dropout Voltage 1 0.75 %/V ±2% 1 % Through Hole Positive TO-92 0.0016mA 3 - Fixed
RS Stock No. 911-5697
Mfr. Part No.MCP1700-3302E/TO
BrandMicrochip
£0.213
Each (In a Bag of 1000)
Units
- 250mA Low Dropout Voltage 1 0.75 %/V ±2% 1 % Through Hole Positive TO-92 0.0016mA 3 - Fixed
RS Stock No. 887-7429
Mfr. Part No.MCP1700T-3302E/TT
BrandMicrochip
£0.213
Each (On a Reel of 3000)
Units
- 250mA Low Dropout Voltage 1 0.75 %/V ±2% 1 % Surface Mount Positive SOT-23 0.0016mA 3 - Fixed
RS Stock No. 698-9044
Mfr. Part No.MCP1700T-3302E/TT
BrandMicrochip
£0.30
Each
Units
- 250mA Low Dropout Voltage 1 0.75 %/V ±2% 1 % Surface Mount Positive SOT-23 0.0016mA 3 - Fixed
RS Stock No. 516-5095
Mfr. Part No.MC34063AP1G
£0.53
Each
Units
- 1.5A Buck Boost Switching 1 - - - Through Hole - PDIP - 8 - -
RS Stock No. 535-9975
Mfr. Part No.LM78L05ACZ/NOPB
£0.536
Each (In a Pack of 5)
Units
- 100mA Linear Voltage 1 75 mV ±5% 60 mV Through Hole Positive TO-92 3mA 3 - Fixed
RS Stock No. 102-5717
Mfr. Part No.LM78L05ACZ/NOPB
£0.201
Each (On a Reel of 1800)
Units
- 100mA Linear Voltage 1 75 mV ±5% 60 mV Through Hole Positive TO-92 3mA 3 - Fixed
RS Stock No. 533-8164
Mfr. Part No.LM2940CT-5.0/NOPB
£1.67
Each
Units
- 1A Low Dropout Voltage 1 50 mV - 50 mV Through Hole Positive TO-220 - 3 - Fixed
RS Stock No. 918-1975
Mfr. Part No.L7812CV
£0.289
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. 686-9757
Mfr. Part No.L78S10CV
£0.465
Each (In a Pack of 10)
Units
- 2A Linear Voltage 1 200 mV - 240 mV Through Hole Positive TO-220 8mA 3 - Fixed
RS Stock No. 168-6060
Mfr. Part No.L7808CV
£0.287
Each (In a Tube of 50)
Units
- 1.5A Linear Voltage 1 160 mV - 160 mV Through Hole Positive TO-220 8mA 3 - Fixed
RS Stock No. 168-6595
Mfr. Part No.L78S10CV
£0.465
Each (In a Tube of 50)
Units
- 2A Linear Voltage 1 200 mV - 240 mV Through Hole Positive TO-220 8mA 3 - Fixed
RS Stock No. 102-5703
Mfr. Part No.LM317HVT/NOPB
£1.622
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 Adjustable
RS Stock No. 121-8741
Mfr. Part No.LM1085IT-12/NOPB
£1.265
Each (In a Tube of 45)
Units
- 3A Low Dropout Voltage 1 25 mV - 36 mV Through Hole Positive TO-220 - 3 - Fixed
RS Stock No. 533-9381
Mfr. Part No.LM1085IT-12/NOPB
£1.50
Each
Units
- 3A Low Dropout Voltage 1 25 mV - 36 mV Through Hole Positive TO-220 - 3 - Fixed
RS Stock No. 655-638
Mfr. Part No.CSR2-10E
£38.26
Each
Units
- 10A Linear Voltage - - - - Panel Mount - - - 3 - Adjustable
RS Stock No. 885-0721
Mfr. Part No.HT7533-1-SOT89
BrandHoltek
£0.351
Each (In a Pack of 20)
Units
- 100mA Low Dropout Voltage 1 0.2 %/V ±3% 60 mV Surface Mount Positive SOT-89 4µA 3 - Fixed
RS Stock No. 170-9148
Mfr. Part No.HT7533-1-SOT89
BrandHoltek
£0.319
Each (On a Reel of 1000)
Units
- 100mA Low Dropout Voltage 1 0.2 %/V ±3% 60 mV Surface Mount Positive SOT-89 4µA 3 - Fixed
RS Stock No. 102-3488
Mfr. Part No.MC7805CTG
£0.28
Each (In a Tube of 50)
Units
- 1A Linear Voltage 1 20 mV ±4% 25 mV Through Hole Positive TO-220 3.2mA 3 - Fixed