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. 923-3688
Mfr. Part No.LP2985-33DBVT
kr 2,72
Each (On a Reel of 250)
Units
- 150mA Low Dropout Voltage 1 0.014 %/V ±1.5% - Surface Mount Positive SOT-23 0.85mA 5 - Fixed
RS Stock No. 464-104
Mfr. Part No.LM337TG
kr 5,707
Each (In a Pack of 10)
Units
- 1.5A Linear Voltage 1 0.04 %/V - 1 % Through Hole Negative TO-220 - 3 -1.25V Adjustable
RS Stock No. 660-6733
Mfr. Part No.LP2985-33DBVT
kr 4,327
Each (In a Pack of 10)
Units
- 150mA Low Dropout Voltage 1 0.014 %/V ±1.5% - Surface Mount Positive SOT-23 0.85mA 5 - Fixed
RS Stock No. 163-2415
Mfr. Part No.LM337TG
kr 5,707
Each (In a Tube of 50)
Units
- 1.5A Linear Voltage 1 0.04 %/V - 1 % Through Hole Negative TO-220 - 3 -1.25V Adjustable
RS Stock No. 822-6799
Mfr. Part No.LTC3531EDD#PBF
kr 44,03
Each (In a Pack of 2)
Units
Buck-Boost 200mA Buck Boost Switching 1 - - - Surface Mount - DFN - 8 - Adjustable
RS Stock No. 545-5742
Mfr. Part No.LT1086CT-5#PBF
kr 45,23
Each
Units
- 1.5A Low Dropout Voltage 1 10 mV - 20 mV Through Hole Positive TO-220 5mA 3 - Fixed
RS Stock No. 860-7286
Mfr. Part No.LM317BT
kr 3,935
Each (In a Pack of 10)
Units
- 2.2A Linear Voltage 1 0.07 %/V - 70 mV Through Hole Positive TO-220 - 3 1.3V Adjustable
RS Stock No. 655-622
Mfr. Part No.CSR2-6E
kr 331,90
Each
Units
- 6A Linear Voltage - - - - Panel Mount - - - 3 - Adjustable
RS Stock No. 177-0811
Mfr. Part No.MIC2920A-5.0WS
BrandMicrochip
kr 5,58
Each (In a Pack of 10)
Units
- 400mA Low Dropout Voltage 1 0.4 % ±2% 0.3 % Surface Mount - SOT-223 140 (Typ.)µA 3 + Tab - Fixed
RS Stock No. 103-3895
Mfr. Part No.MC78M05ABDTG
kr 5,176
Each (In a Tube of 75)
Units
- 700mA Linear Voltage 1 50 mV ±2% 100 mV Surface Mount Positive DPAK - 3 - Fixed
RS Stock No. 168-6797
Mfr. Part No.L7809CV
kr 3,459
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. 545-5720
Mfr. Part No.LT1085CT-5#PBF
kr 80,23
Each
Units
- 3A Low Dropout Voltage 1 0.015 % ±1% 0.1 % Through Hole Positive TO-220 5mA 3 - Fixed
RS Stock No. 178-5059
Mfr. Part No.L7805ACD2T-TR
kr 2,609
Each (On a Reel of 1000)
Units
- - - - - - - - - - - - - -
RS Stock No. 858-0835
Mfr. Part No.LT1084CT#PBF
kr 88,60
Each
Units
- 5A Low Noise LDO 1 0.015 % - 0.1 % Through Hole Positive TO-220 - 3 - Adjustable
RS Stock No. 165-4049
Mfr. Part No.MIC2920A-5.0WS-TR
BrandMicrochip
kr 9,195
Each (On a Reel of 2500)
Units
- 400mA Low Dropout Voltage 1 0.4 % ±4% 0.3 % Surface Mount Positive SOT-223 140µA 3+Tab 1.28V Fixed
RS Stock No. 177-0349
Mfr. Part No.MIC2920A-5.0WS
BrandMicrochip
kr 10,594
Each (In a Tube of 78)
Units
- 400mA Low Dropout Voltage 1 0.4 % ±2% 0.3 % Surface Mount - SOT-223 140µA 3 + Tab - Fixed
RS Stock No. 714-0666
Mfr. Part No.L7809CV
kr 3,468
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. 145-5382
Mfr. Part No.KA317TU
kr 7,98
Each (In a Tube of 50)
Units
- 2.2A - 1 0.04 %/V - 0.5 %/V Through Hole Positive TO-220 - 3 1.3V Adjustable
RS Stock No. 168-8786
Mfr. Part No.LM317BT
kr 3,94
Each (In a Tube of 50)
Units
- 2.2A Linear Voltage 1 0.07 %/V - 70 mV Through Hole Positive TO-220 - 3 1.3V Adjustable
RS Stock No. 910-2013
Mfr. Part No.MIC2920A-5.0WS-TR
BrandMicrochip
kr 13,046
Each (In a Pack of 5)
Units
- 400mA Low Dropout Voltage 1 0.4 % ±4% 0.3 % Surface Mount Positive SOT-223 140µA 3+Tab 1.28V Fixed