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. 166-2173
Mfr. Part No.KA378R33TU
$1.943
Each (In a Tube of 50)
units
- 3A - 1 2.5 % - 2 % Through Hole Positive TO-220F 10mA 4 - 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. 102-5703
Mfr. Part No.LM317HVT/NOPB
$3.705
Each (In a Tube of 45)
units
- 1.5A Linear Voltage 1 0.04 %/V - 0.5 % Through Hole Positive TO-220 - 3 1.3V Adjustable
RS Stock No. 655-644
Mfr. Part No.CSR2-15E
$152.54
Each
units
- 15A Linear Voltage - - - - Panel Mount - - - 3 - Adjustable
RS Stock No. 168-6051
Mfr. Part No.L4941BV
$1.491
Each (In a Tube of 50)
units
- 1A Low Dropout Voltage 1 20 mV ±4% 20 mV Through Hole Positive TO-220 4mA 3 - Fixed
RS Stock No. 535-8663
Mfr. Part No.LM1117IMP-ADJ/NOPB
$1.952
Each (In a Pack of 5)
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. 686-9757
Mfr. Part No.L78S10CV
$1.382
Each (In a Pack of 10)
units
- 2A Linear Voltage 1 200 mV - 240 mV Through Hole Positive TO-220 8mA 3 - Fixed
RS Stock No. 661-6746
Mfr. Part No.UA7905CKCS
$1.408
Each (In a Pack of 5)
units
- 1.5A Linear Voltage 1 50 mV - 100 mV Through Hole Negative TO-220 - 3 - Fixed
RS Stock No. 178-5062
Mfr. Part No.L7805CD2T-TR
$0.522
Each (On a Reel of 1000)
units
- - - - - - - - - - - - - -
RS Stock No. 102-9429
Mfr. Part No.L7805CV-DG
$0.835
Each (In a Tube of 50)
units
- 1.5A Linear Voltage 1 50 mV - 100 mV Through Hole - TO-220 6mA 3 - Fixed
RS Stock No. 516-6177
Mfr. Part No.MC7806CTG
$1.14
Each
units
- 2.2A Linear Voltage 1 24 mV ±4% 30 mV Through Hole Positive TO-220 3.3mA 3 - Fixed
RS Stock No. 189-1374
Mfr. Part No.L4941BV
$2.41
Each
units
- 1A Low Dropout Voltage 1 20 mV ±4% 20 mV Through Hole Positive TO-220 4mA 3 - Fixed
RS Stock No. 533-9381
Mfr. Part No.LM1085IT-12/NOPB
$3.64
Each
units
- 3A Low Dropout Voltage 1 25 mV - 36 mV Through Hole Positive TO-220 - 3 - Fixed
RS Stock No. 922-3527
Mfr. Part No.UA78M05IDCY
$0.812
Each (In a Tube of 80)
units
- - - - - - - - - - - - - -
RS Stock No. 125-0050
Mfr. Part No.MC7806CTG
$0.895
Each (In a Tube of 50)
units
- 2.2A Linear Voltage 1 24 mV ±4% 30 mV Through Hole Positive TO-220 3.3mA 3 - Fixed
RS Stock No. 168-6595
Mfr. Part No.L78S10CV
$0.967
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. 102-3490
Mfr. Part No.MC7809CTG
$0.723
Each (In a Tube of 50)
units
- 2.2A Linear Voltage 1 32 mV ±4% 35 mV Through Hole Positive TO-220 3.4mA 3 - Fixed
RS Stock No. 714-0657
Mfr. Part No.L7805CD2T-TR
$1.698
Each (In a Pack of 10)
units
- 1.5A Linear Voltage 1 100 mV - 100 mV Surface Mount Positive D2PAK 8mA 3 - Fixed
RS Stock No. 518-8379
Mfr. Part No.MC78L15ACPRAG
$0.84
Each (In a Pack of 5)
units
- 100mA Linear Voltage 1 300 mV - 150 mV Through Hole Positive TO-92 - 3 - Fixed
RS Stock No. 145-0649
Mfr. Part No.UA7905CKCS
$1.11
Each (In a Tube of 50)
units
- 1.5A Linear Voltage 1 50 mV - 100 mV Through Hole Negative TO-220 - 3 - Fixed