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 which require a particular voltage input. For example, a processor. Input voltage, output voltage and output current are all important things to consider when choosing an 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 which 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. 661-6187
Mfr. Part No.REG104GA-3.3
TWD221.00
Each
units
- 1A Low Dropout Voltage 1 - ±2% - Surface Mount Positive SOT-223 - 5+Tab 1.295V Fixed
RS Stock No. 922-3505
Mfr. Part No.REG104GA-3.3
TWD189.40
Each (In a Tube of 78)
units
- - - - - - - - - - - - - -
RS Stock No. 533-9583
Mfr. Part No.LM1117MP-5.0/NOPB
TWD38.00
Each
units
- 800mA Low Dropout Voltage 1 1 mV ±1% 1 mV Surface Mount Positive SOT-223 - 3+Tab - Fixed
RS Stock No. 100-5931
Mfr. Part No.LM1117MP-5.0/NOPB
TWD15.60
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. 858-0838
Mfr. Part No.LT1084CT-12#PBF
TWD330.00
Each
units
- 5A Low Noise LDO 1 25 mV - 72 mV Through Hole Positive TO-220 10mA 3 - Fixed
RS Stock No. 168-6809
Mfr. Part No.LM317T
TWD16.90
Each (In a Tube of 50)
units
- 1.5A Linear Voltage 1 0.04 %/V - 0.5 %, 0.5 %Vo, 25 mV%/Vo Through Hole Positive TO-220 - 3 1.25V Adjustable
RS Stock No. 714-0792
Mfr. Part No.LM317T
TWD18.10
Each (In a Pack of 10)
units
- 1.5A Linear Voltage 1 0.04 %/V - 0.5 %, 0.5 %Vo, 25 mV%/Vo Through Hole Positive TO-220 - 3 1.25V Adjustable
RS Stock No. 535-9048
Mfr. Part No.LM2940T-9.0/NOPB
TWD25.80
Each (In a Pack of 5)
units
- 1A Low Dropout Voltage 1 90 mV - 90 mV Through Hole Positive TO-220 - 3 - Fixed
RS Stock No. 121-8831
Mfr. Part No.LM2940T-9.0/NOPB
TWD25.30
Each (In a Tube of 45)
units
- 1A Low Dropout Voltage 1 90 mV - 90 mV Through Hole Positive TO-220 - 3 - Fixed
RS Stock No. 533-5711
Mfr. Part No.LM317LZ/NOPB
TWD23.00
Each
units
- 100mA Linear Voltage 1 0.04 %/V - 0.5 % Through Hole Positive TO-92 - 3 1.3V Adjustable
RS Stock No. 911-5744
Mfr. Part No.MCP1703-5002E/DB
BrandMicrochip
TWD17.80
Each (In a Tube of 78)
units
- 250mA Low Dropout Voltage 1 0.1 %/V ±2% 1 % Surface Mount Positive SOT-223 0.002mA 3+Tab - Fixed
RS Stock No. 669-4890
Mfr. Part No.MCP1703-5002E/DB
BrandMicrochip
TWD21.60
Each (In a Pack of 5)
units
- 250mA Low Dropout Voltage 1 0.1 %/V ±2% 1 % Surface Mount Positive SOT-223 0.002mA 3+Tab - Fixed
RS Stock No. 100-3967
Mfr. Part No.LM317LZ/NOPB
TWD9.00
Each (On a Reel of 1800)
units
- 100mA Linear Voltage 1 0.04 %/V - 0.5 % Through Hole Positive TO-92 - 3 1.3V Adjustable
RS Stock No. 923-2537
Mfr. Part No.LM2941S/NOPB
TWD62.00
Each (In a Tube of 45)
units
- 1A Low Dropout Voltage 1 10 mV/V - 10 mV/V Surface Mount Positive D2PAK (TO-263) - 5 1.313V Adjustable
RS Stock No. 169-8951
Mfr. Part No.TS78M05CP ROG
TWD7.80
Each (On a Reel of 2500)
units
- 500mA Linear Voltage 1 100 mV ±4% 100 mV Surface Mount Positive TO-252 3mA 3 - Fixed
RS Stock No. 398-647
Mfr. Part No.TS78M05CP ROG
TWD19.30
Each (In a Pack of 50)
units
- 500mA Linear Voltage 1 100 mV ±4% 100 mV Surface Mount Positive TO-252 3mA 3 - Fixed
RS Stock No. 153-3327
Mfr. Part No.LT1964ES5-5#TRMPBF
TWD69.30
Each (On a Reel of 500)
units
- 200mA Low Noise LDO 1 50 mV - 50 mV Surface Mount Negative TSOT-23 0.03mA 5 1.22V Fixed
RS Stock No. 923-3827
Mfr. Part No.TLV1117-33CDCY
TWD20.60
Each (In a Tube of 80)
units
- 800mA Low Dropout Voltage 1 0.2 % - 0.4 % Surface Mount Positive SOT-223 5mA 3+Tab - Fixed
RS Stock No. 660-7975
Mfr. Part No.TLV1117-33CDCY
TWD27.00
Each
units
- 800mA Low Dropout Voltage 1 0.2 % - 0.4 % Surface Mount Positive SOT-223 5mA 3+Tab - Fixed
RS Stock No. 460-461
Mfr. Part No.LM2941S/NOPB
TWD83.40
Each (In a Pack of 5)
units
- 1A Low Dropout Voltage 1 10 mV/V - 10 mV/V Surface Mount Positive D2PAK (TO-263) - 5 1.313V Adjustable