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. 772-6645
Mfr. Part No.UPC1093T-E1-AZ
MYR2.193
Each (On a Reel of 15)
units
- 150mA Linear Voltage 1 - ±2% - Surface Mount Positive SOT-89 - 3 2.495V Adjustable
RS Stock No. 536-0010
Mfr. Part No.LM79L12ACZ/NOPB
MYR3.634
Each (In a Pack of 5)
units
- 100mA Linear Voltage 1 0.07 %/V - 0.01 %/mA Through Hole Negative TO-92 2mA 3 - Fixed
RS Stock No. 124-6446
Mfr. Part No.BA033CC0T
BrandROHM
MYR7.704
Each (In a Pack of 5)
units
- 1A Low Dropout Voltage 1 100 mV - 150 mV Through Hole Positive TO-220FP - 3 - Fixed
RS Stock No. 661-6730
Mfr. Part No.UA78M05IDCY
MYR2.846
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. 170-3512
Mfr. Part No.MC34166TVG
MYR8.83
Each (In a Tube of 50)
units
Boost/Buck Controller, Inverting 3A Buck Boost Switching 1 3 mV, 5 mV, 23 mV - 2 mV, 3 mV, 4 mV Through Hole - TO-220 - 5 - Fixed
RS Stock No. 100-0719
Mfr. Part No.LM338T/NOPB
MYR8.274
Each (In a Tube of 45)
units
- 5A Linear Voltage 1 0.03 %/V - 0.5 % Through Hole Positive TO-220 - 3 1.29V Adjustable
RS Stock No. 922-3527
Mfr. Part No.UA78M05IDCY
MYR2.531
Each (In a Tube of 80)
units
- - - - - - - - - - - - - -
RS Stock No. 889-5938
Mfr. Part No.MCP1703T-5002E/CB
BrandMicrochip
MYR2.125
Each (On a Reel of 3000)
units
- 250mA Low Dropout Voltage 1 0.3 %/V ±2% 2.5 % Surface Mount Positive SOT-23A 5µA 3 - Fixed
RS Stock No. 100-0707
Mfr. Part No.LM3578AM/NOPB
MYR10.184
Each (In a Tube of 95)
units
Boost/Buck Controller, Inverting 750mA Buck Boost Switching 1 0.01 %/V - - Surface Mount - SOIC - 8 - Adjustable
RS Stock No. 829-3266
Mfr. Part No.LR8N3-G
BrandMicrochip
MYR2.72
Each (In a Pack of 10)
units
- 30mA Linear Voltage 1 0.01 %/V ±5% 3 % Through Hole Positive TO-92 - 3 - Adjustable
RS Stock No. 370-9637
Mfr. Part No.L200CV
MYR13.577
Each (In a Tube of 50)
units
- 2A Linear Voltage 1 - - 1 % Through Hole Positive PENTAWATT 4.2mA 5 2.86V Adjustable
RS Stock No. 714-7783
Mfr. Part No.L78S12CV
MYR2.854
Each (In a Pack of 10)
units
- 2A Linear Voltage 1 240 mV - 240 mV Through Hole Positive TO-220 8mA 3 - Fixed
RS Stock No. 102-3530
Mfr. Part No.L78S05CV
MYR1.594
Each (In a Tube of 50)
units
- 2A Linear Voltage 1 100 mV - 100 mV Through Hole Positive TO-220 8mA 3 - Fixed
RS Stock No. 714-7768
Mfr. Part No.L78L05ACZTR
MYR1.206
Each (In a Pack of 25)
units
- 100mA Linear Voltage 1 150 mV ±5% 60 mV Through Hole Positive TO-92 6mA 3 - Fixed
RS Stock No. 773-7847
Mfr. Part No.NCP500SN33T1G
MYR1.71
Each (In a Pack of 10)
units
- 150mA Low Dropout Voltage 1 10 mV 2.5% 45 mV Surface Mount Positive TSOP 300µA 5 - Fixed
RS Stock No. 102-3528
Mfr. Part No.L78S12CV
MYR2.615
Each (In a Tube of 50)
units
- 2A Linear Voltage 1 240 mV - 240 mV Through Hole Positive TO-220 8mA 3 - Fixed
RS Stock No. 922-8478
Mfr. Part No.ZLDO1117K33TC
MYR1.059
Each (On a Reel of 2500)
units
- 1A Linear Voltage 1 0.2 % 2% 13 mV Surface Mount Positive TO-252 10mA 3 1.25V Fixed
RS Stock No. 168-6066
Mfr. Part No.L7905CV
MYR1.985
Each (In a Tube of 50)
units
- 1.5A Linear Voltage 1 100 mV - 100 mV Through Hole Negative TO-220 3mA 3 - Fixed
RS Stock No. 298-8615
Mfr. Part No.L7905CV
MYR2.50
Each
units
- 1.5A Linear Voltage 1 100 mV - 100 mV Through Hole Negative TO-220 3mA 3 - Fixed
RS Stock No. 100-5930
Mfr. Part No.LM1117MP-3.3/NOPB
MYR2.644
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