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. 460-900
Mfr. Part No.LM338T/NOPB
kr 19,808
Each (In a Pack of 5)
Units
- 5A Linear Voltage 1 0.03 %/V - 0.5 % Through Hole Positive TO-220 - 3 1.29V Adjustable
RS Stock No. 100-0719
Mfr. Part No.LM338T/NOPB
kr 16,863
Each (In a Tube of 45)
Units
- 5A Linear Voltage 1 0.03 %/V - 0.5 % Through Hole Positive TO-220 - 3 1.29V Adjustable
RS Stock No. 805-1927
Mfr. Part No.NCP4586DSQ33T1G
kr 5,744
Each (On a Tape of 25)
Units
- 200mA Low Noise LDO 1 0.1 %/V ±1% 30 mV Surface Mount Positive SC-82AB 58µA 4 - Fixed
RS Stock No. 162-9059
Mfr. Part No.NCP4586DSQ33T1G
kr 2,498
Each (On a Reel of 3000)
Units
- 200mA Low Noise LDO 1 0.1 %/V ±1% 30 mV Surface Mount Positive SC-82AB 58µA 4 - Fixed
RS Stock No. 661-6733
Mfr. Part No.UA78M33CDCY
kr 5,436
Each (In a Pack of 5)
Units
- 500mA Linear Voltage 1 100 mV - 100 mV Surface Mount Positive SOT-223 - 3+Tab - Fixed
RS Stock No. 922-3520
Mfr. Part No.UA78M33CDCY
kr 4,506
Each (In a Tube of 80)
Units
- - - - - - - - - - - - - -
RS Stock No. 168-5783
Mfr. Part No.L7805CP
kr 6,623
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. 113-8596
Mfr. Part No.LM317TG
kr 4,996
Each (In a Tube of 50)
Units
- 2.2A Linear Voltage 1 0.04 %/V - 25 mV Through Hole - TO-220 - 3 1.3V Adjustable
RS Stock No. 296-756
Mfr. Part No.L7805CP
kr 8,04
Each
Units
- 1.5A Linear Voltage 1 100 mV - 100 mV Through Hole Positive TO-220FP 8mA 3 - Fixed
RS Stock No. 922-3511
Mfr. Part No.UA7805CKCS
kr 6,118
Each (In a Tube of 50)
Units
- - - - - - - - - - - - - -
RS Stock No. 661-6692
Mfr. Part No.UA7805CKCS
kr 7,414
Each (In a Pack of 5)
Units
- 1.5A Linear Voltage 1 100 mV - 100 mV Through Hole Positive TO-220 - 3 - Fixed
RS Stock No. 751-5183
Mfr. Part No.ZLDO1117G33TA
kr 3,605
Each (In a Pack of 25)
Units
- 1A Linear Voltage 1 0.2 % 2% 13 mV Surface Mount Positive SOT-223 10mA 3+Tab 1.25V Fixed
RS Stock No. 922-8474
Mfr. Part No.ZLDO1117G33TA
kr 1,60
Each (On a Reel of 1000)
Units
- 1A Linear Voltage 1 0.2 % 2% 13 mV Surface Mount Positive SOT-223 10mA 3+Tab 1.25V Fixed
RS Stock No. 714-0792
Mfr. Part No.LM317T
kr 4,762
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
kr 4,764
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
New
RS Stock No. 922-3378
Mfr. Part No.LM317DCYR
kr 2,412
Each (On a Reel of 2500)
Units
- - - - - - - - - - - - - -
RS Stock No. 661-3627
Mfr. Part No.LM317DCYR
kr 5,654
Each (In a Pack of 5)
Units
- 1.5A Linear Voltage 1 0.04 %/V - 0.5 % Surface Mount Positive SOT-223 - 3+Tab 1.3V Adjustable
RS Stock No. 308-584
Mfr. Part No.CSR1504A
kr 280,48
Each
Units
- 15A Linear Voltage - - - - Through Hole - - - 3 - Adjustable
RS Stock No. 661-6128
Mfr. Part No.LM317DCY
kr 6,784
Each (In a Pack of 5)
Units
- 1.5A Linear Voltage 1 0.04 %/V - 0.5 % Surface Mount Positive SOT-223 - 3+Tab 1.3V Adjustable
RS Stock No. 121-9159
Mfr. Part No.LM317DCY
kr 5,539
Each (In a Tube of 80)
Units
- 1.5A Linear Voltage 1 0.04 %/V - 0.5 % Surface Mount Positive SOT-223 - 3+Tab 1.3V Adjustable