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. 298-8520
Mfr. Part No.L7808CV
SGD0.71
Each
units
- 1.5A Linear Voltage 1 160 mV - 160 mV Through Hole Positive TO-220 8mA 3 - Fixed
RS Stock No. 669-4869
Mfr. Part No.MCP1701AT-3302I/CB
BrandMicrochip
SGD1.397
Each (In a Pack of 10)
units
- 150mA Low Dropout Voltage 1 0.3 %/V ±2% 2.72 % Surface Mount Positive SOT-23A 0.002mA 3 - Fixed
RS Stock No. 785-2653
Mfr. Part No.NCV5501DT50RKG
SGD1.46
Each (In a Pack of 5)
units
- 500mA Low Dropout Voltage 1 1 % 2.9% 1 % Surface Mount Positive DPAK - 3 - Fixed
RS Stock No. 121-8741
Mfr. Part No.LM1085IT-12/NOPB
SGD2.688
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. 533-5632
Mfr. Part No.LM2940T-5.0/NOPB
SGD3.09
Each
units
- 1A Low Dropout Voltage 1 50 mV - 50 mV Through Hole Positive TO-220 - 3 - Fixed
RS Stock No. 779-9423
Mfr. Part No.LT1763CS8-5#PBF
SGD8.045
Each (In a Pack of 2)
units
- 500mA Low Dropout Voltage 1 5 mV - 50 mV Surface Mount Positive SOIC 30µA 8 - Fixed
RS Stock No. 102-5701
Mfr. Part No.LM2940T-12.0/NOPB
SGD2.174
Each (In a Tube of 45)
units
- 1A Low Dropout Voltage 1 120 mV - 120 mV Through Hole Positive TO-220 - 3 - Fixed
RS Stock No. 102-3501
Mfr. Part No.MC78L05ACPG
SGD0.201
Each (In a Bag of 2000)
units
- 100mA Linear Voltage 1 150 mV - 60 mV Through Hole Positive TO-92 - 3 - Fixed
RS Stock No. 178-5116
Mfr. Part No.L78L12ACZ
SGD0.139
Each (On a Reel of 2500)
units
- - - - - - - - - - - - - -
RS Stock No. 100-5930
Mfr. Part No.LM1117MP-3.3/NOPB
SGD0.771
Each (On a Reel of 1000)
units
- 800mA Low Dropout Voltage 1 1 mV ±1% 1 mV Surface Mount Positive SOT-223 - 3+Tab - Fixed
RS Stock No. 686-9653
Mfr. Part No.L78L12ACZ-AP
SGD0.469
Each (In a Pack of 50)
units
- 100mA Linear Voltage 1 250 mV ±5% 100 mV Through Hole Positive TO-92 6.5mA 3 - Fixed
RS Stock No. 751-2890
Mfr. Part No.AP1117E33G-13
SGD0.521
Each (In a Pack of 50)
units
- 1A Linear Voltage 1 0.2 % - 33 mV Surface Mount Positive SOT-223 10mA 3+Tab - Fixed
RS Stock No. 620-1861
Mfr. Part No.TPS79501DCQ
SGD5.27
Each (In a Pack of 5)
units
- 500mA Low Dropout Voltage 1 0.05 %/V ±3% 3 mV Surface Mount Positive SOT-223 0.265mA 5+Tab 1.225V Adjustable
RS Stock No. 298-8586
Mfr. Part No.L7812ACV
SGD1.47
Each
units
- 1A Linear Voltage 1 120 mV 2% 100 mV Through Hole Positive TO-220 4.4mA 3 - Fixed
RS Stock No. 828-7404
Mfr. Part No.AP2204K-ADJTRG1
SGD0.502
Each (In a Pack of 50)
units
- 150mA Low Dropout Voltage 1 0.05 % - 0.5 % Surface Mount Positive SOT-23 50µA 5 1.24V Adjustable
RS Stock No. 460-900
Mfr. Part No.LM338T/NOPB
SGD4.442
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. 168-6612
Mfr. Part No.L7805ABV
SGD0.635
Each (In a Tube of 50)
units
- 1A Linear Voltage 1 50 mV 2% 100 mV Through Hole Positive TO-220 4.3mA 3 - Fixed
RS Stock No. 810-0063
Mfr. Part No.LM317KCT
SGD0.747
Each (In a Pack of 50)
units
- 1.5A Linear Voltage 1 0.07 %/V - 1.5 %/V Through Hole Positive TO-220 - 3 1.3V Adjustable
RS Stock No. 516-5758
Mfr. Part No.MC78L05ACPG
SGD0.414
Each (In a Pack of 5)
units
- 100mA Linear Voltage 1 150 mV - 60 mV Through Hole Positive TO-92 - 3 - Fixed
RS Stock No. 812-4132
Mfr. Part No.TLV70433DBVT
SGD0.872
Each (In a Pack of 25)
units
- 150mA Low Noise LDO 1 50 mV 2% 75 mV Surface Mount Positive SOT-23 3.2µA 5 1.205V Fixed