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. 168-6595
Mfr. Part No.L78S10CV
$0.965
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. 121-8741
Mfr. Part No.LM1085IT-12/NOPB
$2.793
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. 661-6730
Mfr. Part No.UA78M05IDCY
$1.006
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. 533-9369
Mfr. Part No.LM1085IS-5.0/NOPB
$4.26
Each
units
- 3A Low Dropout Voltage 1 10 mV - 20 mV Surface Mount Positive D2PAK (TO-263) - 3 - Fixed
RS Stock No. 145-5245
Mfr. Part No.MC7915CD2TR4G
$0.669
Each (On a Reel of 800)
units
- 1A Linear Voltage 1 300 mV - 300 mV Surface Mount Negative D2PAK - 3 - Fixed
RS Stock No. 168-6047
Mfr. Part No.LM217T
$1.083
Each (In a Tube of 50)
units
- 1.5A Linear Voltage 1 0.02 %/V - 0.3 % Through Hole Positive TO-220 - 3 1.3V Adjustable
RS Stock No. 922-2978
Mfr. Part No.LM350K STEEL/NOPB
$104.215
Each (In a Tray of 50)
units
- 3A Linear Voltage 1 0.03 %/V - 0.5 % Through Hole Positive TO-3 - 3 1.3V Adjustable
RS Stock No. 102-5728
Mfr. Part No.LP2950ACZ-3.3/NOPB
$0.662
Each (On a Reel of 1800)
units
- 100mA Low Dropout Voltage 1 0.1 % ±0.5% 0.1 % Through Hole Positive TO-92 - 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. 189-1015
Mfr. Part No.LM217T
$2.51
Each
units
- 1.5A Linear Voltage 1 0.02 %/V - 0.3 % Through Hole Positive TO-220 - 3 1.3V Adjustable
RS Stock No. 146-0315
Mfr. Part No.MIC29302WU
BrandMicrochip
$3.142
Each (In a Tube of 50)
units
- 3A Low Dropout Voltage 1 0.5 % ±1% 1 % Surface Mount Positive D2PAK (TO-263) - 5 1.252V Adjustable
RS Stock No. 165-7697
Mfr. Part No.L79L12ACZ-TR
$0.161
Each (On a Reel of 2000)
units
- 100mA Linear Voltage 1 250 mV ±5% 100 mV Through Hole Negative TO-92 6.5mA 3 - Fixed
RS Stock No. 398-625
Mfr. Part No.TS9011SCX RFG
$0.732
Each (In a Pack of 50)
units
- 250mA Low Dropout Voltage 1 0.3 % ±2% 80 mV Surface Mount Positive SOT-23 0.002mA 3 - Fixed
RS Stock No. 828-7606
Mfr. Part No.AZ1117CR-3.3TRG1
$0.435
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. 761-8572
Mfr. Part No.LT1965IMS8E#PBF
$10.24
Each
units
- 1.1A Low Dropout Voltage 1 8 mV - 16 mV Surface Mount Positive MSOP 0.5mA 8 - Adjustable
RS Stock No. 714-0666
Mfr. Part No.L7809CV
$1.037
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. 102-5697
Mfr. Part No.LM2937ET-3.3/NOPB
$2.457
Each (In a Tube of 45)
units
- 500mA Low Dropout Voltage 1 9.9 mV ±5% 3.3 mV Through Hole Positive TO-220 - 3 - Fixed
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. 102-3493
Mfr. Part No.MC7824CTG
$0.901
Each (In a Tube of 50)
units
- 1A Linear Voltage 1 60 mV ±4% 65 mV Through Hole Positive TO-220 3.6mA 3 - 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