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. 102-5681
Mfr. Part No.LM1117IMP-5.0/NOPB
SGD0.771
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. 714-0679
Mfr. Part No.L78L05ACUTR
SGD0.611
Each (In a Pack of 10)
units
- 100mA Linear Voltage 1 150 mV ±5% 60 mV Surface Mount Positive SOT-89 6mA 3 - Fixed
RS Stock No. 124-6450
Mfr. Part No.BA17805FP-E2
BrandROHM
SGD0.749
Each (In a Pack of 10)
units
- 1A Linear Voltage 1 - ±4% 100 mV Surface Mount Positive TO-252 - 3 - Fixed
RS Stock No. 714-7780
Mfr. Part No.L78S05CV
SGD1.00
Each (In a Pack of 10)
units
- 2A Linear Voltage 1 100 mV - 100 mV Through Hole Positive TO-220 8mA 3 - Fixed
RS Stock No. 686-9252
Mfr. Part No.LD1117DT33TR
SGD0.605
Each (In a Pack of 25)
units
- 1.3A Low Dropout Voltage 1 6 mV ±1% 10 mV Surface Mount Positive DPAK 5mA 3 - Fixed
RS Stock No. 661-7067
Mfr. Part No.TPS63001DRCT
SGD4.17
Each
units
- 1.2A DC-DC 1 0.5 % - 0.5 % Surface Mount - SON - 10 - Fixed
RS Stock No. 793-1355
Mfr. Part No.L7812CV-DG
SGD1.164
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. 168-6536
Mfr. Part No.L78S75CV
SGD1.145
Each (In a Tube of 50)
units
- 2A Linear Voltage 1 120 mV - 140 mV Through Hole Positive TO-220 8mA 3 - Fixed
RS Stock No. 168-7135
Mfr. Part No.L7812CV-DG
SGD0.741
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. 516-5095
Mfr. Part No.MC34063AP1G
SGD1.17
Each
units
- 1.5A Buck Boost Switching 1 - - - Through Hole - PDIP - 8 - -
RS Stock No. 709-5257
Mfr. Part No.ADP1111ANZ-5
SGD9.49
Each
units
Boost/Buck Controller, Inverting, Non-Inverting 400mA Buck Boost Switching 1 0.4 %/V - - Through Hole - PDIP - 8 - Fixed
RS Stock No. 100-5939
Mfr. Part No.LM3940IT-3.3/NOPB
SGD2.552
Each (In a Tube of 45)
units
- 1A Low Dropout Voltage 1 40 mV - 50 mV Through Hole Positive TO-220 - 3 - Fixed
RS Stock No. 647-4996
Mfr. Part No.LP2985IM5-5.0/NOPB
SGD1.30
Each
units
- 150mA Linear Voltage 1 0.014 %/V ±3% - Surface Mount Positive SOT-23 - 5 - Fixed
RS Stock No. 901-3254
Mfr. Part No.LT1086CT-3.3#PBF
SGD8.20
Each (In a Pack of 2)
units
- 1.5A Low Dropout Voltage 1 10 mV - 15 mV Through Hole Positive TO-220 5mA 3 - Fixed
RS Stock No. 534-3021
Mfr. Part No.LM3940IT-3.3/NOPB
SGD3.38
Each
units
- 1A Low Dropout Voltage 1 40 mV - 50 mV Through Hole Positive TO-220 - 3 - Fixed
RS Stock No. 545-5764
Mfr. Part No.LT1086CT-12#PBF
SGD8.20
Each
units
- 1.5A Low Dropout Voltage 1 25 mV - 36 mV Through Hole Positive TO-220 5mA 3 - Fixed
RS Stock No. 686-9026
Mfr. Part No.L78S75CV
SGD1.145
Each (In a Pack of 10)
units
- 2A Linear Voltage 1 120 mV - 140 mV Through Hole Positive TO-220 8mA 3 - Fixed
RS Stock No. 535-9026
Mfr. Part No.LM2940T-12.0/NOPB
SGD2.562
Each (In a Pack of 5)
units
- 1A Low Dropout Voltage 1 120 mV - 120 mV Through Hole Positive TO-220 - 3 - Fixed
RS Stock No. 779-9423
Mfr. Part No.LT1763CS8-5#PBF
SGD7.865
Each (In a Pack of 2)
units
- 500mA Low Dropout Voltage 1 5 mV - 50 mV Surface Mount Positive SOIC 30µA 8 - Fixed
RS Stock No. 178-5116
Mfr. Part No.L78L12ACZ
SGD0.139
Each (On a Reel of 2500)
units
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