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 Output Voltage Line Regulation Accuracy Load Regulation Mounting Type Polarity Package Type Quiescent Current Pin Count Reference Voltage
RS Stock No. 102-5640
Mfr. Part No.LP2985AIM5-3.3/NOPB
MYR2.173
Each (On a Reel of 1000)
units
- 150mA Low Dropout Voltage 1 3.3 V 0.014 %/V ±2.5% - Surface Mount Positive SOT-23 - 5 -
RS Stock No. 652-0033
Mfr. Part No.LP2985AIM5-3.3/NOPB
MYR4.25
Each
units
- 150mA Low Dropout Voltage 1 3.3 V 0.014 %/V ±2.5% - Surface Mount Positive SOT-23 - 5 -
RS Stock No. 102-9429
Mfr. Part No.L7805CV-DG
MYR2.678
Each (In a Tube of 50)
units
- 1.5A Linear Voltage 1 5 V 50 mV - 100 mV Through Hole - TO-220 6mA 3 -
RS Stock No. 793-1346
Mfr. Part No.L7805CV-DG
MYR4.068
Each (In a Pack of 10)
units
- 1.5A Linear Voltage 1 5 V 50 mV - 100 mV Through Hole - TO-220 6mA 3 -
RS Stock No. 827-5085
Mfr. Part No.IFX25401TEVATMA1
BrandInfineon
MYR4.904
Each (In a Pack of 25)
units
- 400mA Low Dropout Voltage 1 2.5 → 20 V 25 mV ±2% 35 mV Surface Mount Positive TO-252 220µA 5 2.5V
RS Stock No. 165-5967
Mfr. Part No.IFX25401TEVATMA1
BrandInfineon
MYR2.234
Each (On a Reel of 2500)
units
- 400mA Low Dropout Voltage 1 2.5 → 20 V 25 mV ±2% 35 mV Surface Mount Positive TO-252 220µA 5 2.5V
RS Stock No. 805-6474
Mfr. Part No.MC7806ACTG
Brandonsemi
MYR3.434
Each (In a Pack of 25)
units
- 2.2A Linear Voltage 1 6 V 15 mV - 25 mV Through Hole Positive TO-220 6mA 3 -
RS Stock No. 145-3439
Mfr. Part No.MC7806ACTG
Brandonsemi
MYR3.245
Each (In a Tube of 50)
units
- 2.2A Linear Voltage 1 6 V 15 mV - 25 mV Through Hole Positive TO-220 6mA 3 -
RS Stock No. 785-7232
Mfr. Part No.NCP508SQ18T1G
Brandonsemi
MYR2.012
Each (On a Tape of 20)
units
- 50mA Low Dropout Voltage 1 1.8 V 20 mV ±3% 40 mV Surface Mount Positive SC-70 1µA 5 -
RS Stock No. 170-3507
Mfr. Part No.NCP508SQ18T1G
Brandonsemi
MYR0.70
Each (On a Reel of 3000)
units
- 50mA Low Dropout Voltage 1 1.8 V 20 mV ±3% 40 mV Surface Mount Positive SC-70 1µA 5 -
RS Stock No. 714-0792
Mfr. Part No.LM317T
MYR4.086
Each (In a Pack of 10)
units
- 1.5A Linear Voltage 1 1.2 → 37 V 0.04 %/V - 0.5 %, 0.5 %Vo, 25 mV%/Vo Through Hole Positive TO-220 - 3 1.25V
RS Stock No. 168-6809
Mfr. Part No.LM317T
MYR2.766
Each (In a Tube of 50)
units
- 1.5A Linear Voltage 1 1.2 → 37 V 0.04 %/V - 0.5 %, 0.5 %Vo, 25 mV%/Vo Through Hole Positive TO-220 - 3 1.25V
RS Stock No. 163-0770
Mfr. Part No.NCV8664DT50RKG
Brandonsemi
MYR4.169
Each (On a Reel of 2500)
units
- 150mA Low Dropout Voltage 1 5 V 25 mV ±2% 35 mV Surface Mount Positive DPAK 30µA 3 1.3V
RS Stock No. 121-9161
Mfr. Part No.UA78M05CDCY
MYR2.98
Each (In a Tube of 80)
units
- 500mA Linear Voltage 1 5 V 100 mV - 100 mV Surface Mount Positive SOT-223 - 3+Tab -
RS Stock No. 686-9026
Mfr. Part No.L78S75CV
MYR4.064
Each (In a Pack of 10)
units
- 2A Linear Voltage 1 7.5 V 120 mV - 140 mV Through Hole Positive TO-220 8mA 3 -
RS Stock No. 168-6536
Mfr. Part No.L78S75CV
MYR5.326
Each (In a Tube of 50)
units
- 2A Linear Voltage 1 7.5 V 120 mV - 140 mV Through Hole Positive TO-220 8mA 3 -
RS Stock No. 686-9221
Mfr. Part No.L7805CDT-TR
MYR3.715
Each (In a Pack of 10)
units
- 1.5A Linear Voltage 1 5 V 100 mV - 100 mV Surface Mount Positive DPAK 8mA 3 -
RS Stock No. 122-3393
Mfr. Part No.AZ1117H-5.0TRE1
MYR0.505
Each (On a Reel of 4000)
units
- 1A Linear Voltage 1 5 V 10 mV ±1% 15 mV Surface Mount Positive SOT-223 10mA 3+Tab -
RS Stock No. 168-6559
Mfr. Part No.L7805CDT-TR
MYR1.752
Each (On a Reel of 2500)
units
- 1.5A Linear Voltage 1 5 V 100 mV - 100 mV Surface Mount Positive DPAK 8mA 3 -
RS Stock No. 885-5423
Mfr. Part No.AS78L05ZTR-E1
MYR0.622
Each (In a Pack of 100)
units
- 100mA Linear Voltage 1 5 V 150 mV ±5% 60 mV Through Hole Positive TO-92 5.5mA 3 -