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
$1.332
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. 102-5682
Mfr. Part No.LM1117IMP-ADJ/NOPB
$0.777
Each (On a Reel of 1000)
units
- 1.5A Low Dropout Voltage 1 0.035 % ±1% 0.2 % Surface Mount Positive SOT-223 - 3+Tab 1.262V Adjustable
RS Stock No. 165-7715
Mfr. Part No.L78L05ABD13TR
$0.165
Each (On a Reel of 2500)
units
- 100mA Linear Voltage 1 150 mV - 60 mV Surface Mount Positive SOIC 6mA 8 - Fixed
RS Stock No. 545-5764
Mfr. Part No.LT1086CT-12#PBF
$8.79
Each
units
- 1.5A Low Dropout Voltage 1 25 mV - 36 mV Through Hole Positive TO-220 5mA 3 - Fixed
RS Stock No. 796-8060
Mfr. Part No.LM7805CT/NOPB
$2.88
Each (In a Pack of 5)
units
- 1A Linear Voltage 1 150 mV - 150 mV Through Hole Positive TO-220 8.5mA 3 - Fixed
RS Stock No. 145-2870
Mfr. Part No.LP2950ACDT-5.0G
$1.144
Each (In a Tube of 75)
units
- 100mA Low Dropout Voltage 1 0.1 % 1% 0.1 % Surface Mount Positive DPAK 75µA 3 1.235V Fixed
RS Stock No. 355-4128
Mfr. Part No.LF33CV
$1.78
Each
units
- 500mA Low Dropout Voltage 1 16 mV ±2% 16 mV Through Hole Positive TO-220 0.5mA 3 - Fixed
RS Stock No. 122-3358
Mfr. Part No.AP2204K-ADJTRG1
$0.197
Each (On a Reel of 3000)
units
- 150mA Low Dropout Voltage 1 0.05 % - 0.5 % Surface Mount Positive SOT-23 50µA 5 1.24V Adjustable
RS Stock No. 165-4231
Mfr. Part No.MIC29302WU-TR
BrandMicrochip
$2.993
Each (On a Reel of 750)
units
- 3A Low Dropout Voltage 1 0.5 % ±2% 1 % Surface Mount Positive D2PAK (TO-263) - 5 1.24V Adjustable
RS Stock No. 910-1701
Mfr. Part No.MIC29302WU-TR
BrandMicrochip
$3.832
Each (In a Pack of 5)
units
- 3A Low Dropout Voltage 1 0.5 % ±2% 1 % Surface Mount Positive D2PAK (TO-263) - 5 1.24V Adjustable
RS Stock No. 169-8949
Mfr. Part No.TS9011SCX RFG
$0.276
Each (On a Reel of 3000)
units
- 250mA Low Dropout Voltage 1 0.3 % ±2% 80 mV Surface Mount Positive SOT-23 0.002mA 3 - Fixed
RS Stock No. 298-8592
Mfr. Part No.L78M05CV
$1.10
Each
units
- 500mA Linear Voltage 1 100 mV - 100 mV Through Hole Positive TO-220 6mA 3 - Fixed
RS Stock No. 732-1206
Mfr. Part No.UA78L08ACLPRE3
$0.84
Each (In a Pack of 5)
units
- 100mA Linear Voltage 1 175 mV ±5% 80 mV Through Hole Positive TO-92 - 3 - Fixed
RS Stock No. 785-6847
Mfr. Part No.LP2950ACDT-5.0G
$1.376
Each (In a Pack of 5)
units
- 100mA Low Dropout Voltage 1 0.1 % 1% 0.1 % Surface Mount Positive DPAK 75µA 3 1.235V Fixed
RS Stock No. 828-7606
Mfr. Part No.AZ1117CR-3.3TRG1
$0.446
Each (In a Pack of 50)
units
- 800mA Low Dropout Voltage 1 10 mV ±1% 15 mV Surface Mount Positive SOT-89 6mA 3 - Fixed
RS Stock No. 168-6586
Mfr. Part No.LM317P
$1.313
Each (In a Tube of 50)
units
- 1.5A Linear Voltage 1 0.04 %/V - 0.5 % Through Hole Positive TO-220FP - 3 1.3V Adjustable
RS Stock No. 748-8854
Mfr. Part No.NCP4683DSQ33T1G
$1.642
Each (In a Pack of 5)
units
- 400mA Linear Voltage 1 0.1 %/V ±1% 40 mV Surface Mount Positive SC-70 75µA 5 - Fixed
RS Stock No. 533-9599
Mfr. Part No.LM1117MP-ADJ/NOPB
$2.32
Each
units
- 800mA Low Dropout Voltage 1 0.035 % ±1% 0.2 % Surface Mount Positive SOT-223 - 3+Tab 1.262V Adjustable
RS Stock No. 121-9654
Mfr. Part No.AZ1117CR-3.3TRG1
$0.13
Each (On a Reel of 1000)
units
- 800mA Low Dropout Voltage 1 10 mV ±1% 15 mV Surface Mount Positive SOT-89 6mA 3 - Fixed
RS Stock No. 922-2369
Mfr. Part No.LM7805CT/NOPB
$2.93
Each (In a Tube of 45)
units
- 1A Linear Voltage 1 150 mV - 150 mV Through Hole Positive TO-220 8.5mA 3 - Fixed