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. 403-888
Mfr. Part No.MCP1700-3302E/TO
BrandMicrochip
$0.828
Each (In a Pack of 10)
units
- 250mA Low Dropout Voltage 1 0.75 %/V ±2% 1 % Through Hole Positive TO-92 0.0016mA 3 - Fixed
RS Stock No. 121-9570
Mfr. Part No.ZLDO1117G50TA
$0.281
Each (On a Reel of 1000)
units
- 1A Linear Voltage 1 0.2 % 2% 20 mV Surface Mount Positive SOT-223 10mA 3+Tab 1.25V Fixed
RS Stock No. 178-1481
Mfr. Part No.L7915CP
$1.176
Each (In a Tube of 50)
units
- - - - - - - - - - - - - -
RS Stock No. 165-7744
Mfr. Part No.LD1117S12CTR
$0.293
Each (On a Reel of 2500)
units
- 1.3A Low Dropout Voltage 1 1 % ±1% 1 % Surface Mount Positive SOT-223 - 3+Tab 1.224V Fixed
RS Stock No. 102-3505
Mfr. Part No.NCP1117DT50G
$0.631
Each (In a Tube of 75)
units
- 1A Low Dropout Voltage 1 0.9 mV ±1% 6.7 mV Surface Mount Positive DPAK 3.6mA 3 - Fixed
RS Stock No. 686-9754
Mfr. Part No.L7915CP
$1.514
Each (In a Pack of 10)
units
- 1.5A Linear Voltage 1 300 mV - 300 mV Through Hole Negative TO-220FP 3mA 3 - Fixed
RS Stock No. 516-5871
Mfr. Part No.NCP1117DT50G
$0.792
Each (In a Pack of 5)
units
- 1A Low Dropout Voltage 1 0.9 mV ±1% 6.7 mV Surface Mount Positive DPAK 3.6mA 3 - Fixed
RS Stock No. 168-6062
Mfr. Part No.L7824CV
$0.864
Each (In a Tube of 50)
units
- 1.5A Linear Voltage 1 480 mV - 480 mV Through Hole Positive TO-220 8mA 3 - Fixed
RS Stock No. 911-5697
Mfr. Part No.MCP1700-3302E/TO
BrandMicrochip
$0.469
Each (In a Bag of 1000)
units
- 250mA Low Dropout Voltage 1 0.75 %/V ±2% 1 % Through Hole Positive TO-92 0.0016mA 3 - Fixed
RS Stock No. 686-9366
Mfr. Part No.LD1117S12CTR
$0.712
Each (In a Pack of 25)
units
- 1.3A Low Dropout Voltage 1 1 % ±1% 1 % Surface Mount Positive SOT-223 - 3+Tab 1.224V Fixed
RS Stock No. 298-8564
Mfr. Part No.L7824CV
$0.79
Each
units
- 1.5A Linear Voltage 1 480 mV - 480 mV Through Hole Positive TO-220 8mA 3 - Fixed
RS Stock No. 170-3504
Mfr. Part No.NCP1117DT12G
$0.632
Each (In a Tube of 75)
units
- 2.2A Low Dropout Voltage 1 0.1 % ±1% 0.4 % Surface Mount Positive DPAK 10mA 3 1.25V Fixed
RS Stock No. 751-5186
Mfr. Part No.ZLDO1117G50TA
$0.706
Each (In a Pack of 25)
units
- 1A Linear Voltage 1 0.2 % 2% 20 mV Surface Mount Positive SOT-223 10mA 3+Tab 1.25V Fixed
RS Stock No. 655-638
Mfr. Part No.CSR2-10E
$117.56
Each
units
- 10A Linear Voltage - - - - Panel Mount - - - 3 - Adjustable
RS Stock No. 533-8164
Mfr. Part No.LM2940CT-5.0/NOPB
$4.07
Each
units
- 1A Low Dropout Voltage 1 50 mV - 50 mV Through Hole Positive TO-220 - 3 - Fixed
RS Stock No. 645-1044
Mfr. Part No.LM1084IS-5.0/NOPB
$5.41
Each (In a Pack of 5)
units
- 5A Low Dropout Voltage 1 10 mV - 20 mV Surface Mount Positive D2PAK (TO-263) - 3 - Fixed
RS Stock No. 100-5912
Mfr. Part No.LM1084IT-5.0/NOPB
$3.78
Each (In a Tube of 45)
units
- 5A Low Dropout Voltage 1 10 mV - 20 mV Through Hole Positive TO-220 - 3 - Fixed
RS Stock No. 686-9767
Mfr. Part No.LD1117V33C
$0.802
Each (In a Pack of 10)
units
- 1.3A Low Dropout Voltage 1 30 mV ±1% 30 mV Through Hole Positive TO-220 5mA 3 - Fixed
RS Stock No. 102-5616
Mfr. Part No.LM1084IS-5.0/NOPB
$4.158
Each (In a Tube of 45)
units
- 5A Low Dropout Voltage 1 10 mV - 20 mV Surface Mount Positive D2PAK (TO-263) - 3 - Fixed
RS Stock No. 686-9022
Mfr. Part No.L78S18CV
$1.295
Each (In a Pack of 10)
units
- 2A Linear Voltage 1 360 mV - 360 mV Through Hole Positive TO-220 8mA 3 - Fixed