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. 102-5640
Mfr. Part No.LP2985AIM5-3.3/NOPB
MYR2.027
Each (On a Reel of 1000)
units
- 150mA Low Dropout Voltage 1 0.014 %/V ±2.5% - Surface Mount Positive SOT-23 - 5 - Fixed
RS Stock No. 652-0033
Mfr. Part No.LP2985AIM5-3.3/NOPB
MYR3.98
Each
units
- 150mA Low Dropout Voltage 1 0.014 %/V ±2.5% - Surface Mount Positive SOT-23 - 5 - Fixed
RS Stock No. 793-1346
Mfr. Part No.L7805CV-DG
MYR2.136
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. 102-9429
Mfr. Part No.L7805CV-DG
MYR2.09
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. 827-5085
Mfr. Part No.IFX25401TEVATMA1
BrandInfineon
MYR3.706
Each (In a Pack of 25)
units
- 400mA Low Dropout Voltage 1 25 mV ±2% 35 mV Surface Mount Positive TO-252 220µA 5 2.5V Adjustable
RS Stock No. 165-5967
Mfr. Part No.IFX25401TEVATMA1
BrandInfineon
MYR2.234
Each (On a Reel of 2500)
units
- 400mA Low Dropout Voltage 1 25 mV ±2% 35 mV Surface Mount Positive TO-252 220µA 5 2.5V Adjustable
RS Stock No. 145-3439
Mfr. Part No.MC7806ACTG
MYR2.163
Each (In a Tube of 50)
units
- 2.2A Linear Voltage 1 15 mV - 25 mV Through Hole Positive TO-220 6mA 3 - Fixed
RS Stock No. 805-6474
Mfr. Part No.MC7806ACTG
MYR1.379
Each (In a Pack of 25)
units
- 2.2A Linear Voltage 1 15 mV - 25 mV Through Hole Positive TO-220 6mA 3 - Fixed
RS Stock No. 168-6809
Mfr. Part No.LM317T
MYR2.507
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
MYR2.809
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. 170-3507
Mfr. Part No.NCP508SQ18T1G
MYR0.60
Each (On a Reel of 3000)
units
- 50mA Low Dropout Voltage 1 20 mV ±3% 40 mV Surface Mount Positive SC-70 1µA 5 - Fixed
RS Stock No. 785-7232
Mfr. Part No.NCP508SQ18T1G
MYR1.68
Each (On a Tape of 20)
units
- 50mA Low Dropout Voltage 1 20 mV ±3% 40 mV Surface Mount Positive SC-70 1µA 5 - Fixed
RS Stock No. 686-9221
Mfr. Part No.L7805CDT-TR
MYR2.772
Each (In a Pack of 10)
units
- 1.5A Linear Voltage 1 100 mV - 100 mV Surface Mount Positive DPAK 8mA 3 - Fixed
RS Stock No. 122-3393
Mfr. Part No.AZ1117H-5.0TRE1
MYR0.416
Each (On a Reel of 4000)
units
- 1A Linear Voltage 1 10 mV ±1% 15 mV Surface Mount Positive SOT-223 10mA 3+Tab - Fixed
RS Stock No. 686-9026
Mfr. Part No.L78S75CV
MYR3.213
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. 661-6721
Mfr. Part No.UA78M05CDCY
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. 885-5423
Mfr. Part No.AS78L05ZTR-E1
MYR0.455
Each (In a Pack of 100)
units
- 100mA Linear Voltage 1 150 mV ±5% 60 mV Through Hole Positive TO-92 5.5mA 3 - Fixed
RS Stock No. 121-9161
Mfr. Part No.UA78M05CDCY
MYR2.299
Each (In a Tube of 80)
units
- 500mA Linear Voltage 1 100 mV - 100 mV Surface Mount Positive SOT-223 - 3+Tab - Fixed
RS Stock No. 885-5432
Mfr. Part No.AZ1117H-5.0TRE1
MYR1.815
Each (In a Pack of 50)
units
- 1A Linear Voltage 1 10 mV ±1% 15 mV Surface Mount Positive SOT-223 10mA 3+Tab - Fixed
RS Stock No. 168-6559
Mfr. Part No.L7805CDT-TR
MYR1.166
Each (On a Reel of 2500)
units
- 1.5A Linear Voltage 1 100 mV - 100 mV Surface Mount Positive DPAK 8mA 3 - Fixed