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. 162-7853
Mfr. Part No.TLV70433DBVT
SGD0.626
Each (On a Reel of 250)
units
- 150mA Low Noise LDO 1 50 mV 2% 75 mV Surface Mount Positive SOT-23 3.2µA 5 1.205V Fixed
RS Stock No. 145-6669
Mfr. Part No.TPS79501DCQ
SGD4.73
Each (In a Tube of 78)
units
- 500mA Low Dropout Voltage 1 0.05 %/V ±3% 3 mV Surface Mount Positive SOT-223 0.265mA 5+Tab 1.225V Adjustable
RS Stock No. 533-5632
Mfr. Part No.LM2940T-5.0/NOPB
SGD3.09
Each
units
- 1A Low Dropout Voltage 1 50 mV - 50 mV Through Hole Positive TO-220 - 3 - Fixed
RS Stock No. 100-3962
Mfr. Part No.LM2940T-5.0/NOPB
SGD2.174
Each (In a Tube of 45)
units
- 1A Low Dropout Voltage 1 50 mV - 50 mV Through Hole Positive TO-220 - 3 - Fixed
RS Stock No. 785-2653
Mfr. Part No.NCV5501DT50RKG
SGD1.48
Each (In a Pack of 5)
units
- 500mA Low Dropout Voltage 1 1 % 2.9% 1 % Surface Mount Positive DPAK - 3 - Fixed
RS Stock No. 121-9336
Mfr. Part No.LM317KCT
SGD0.717
Each (In a Tube of 50)
units
- 1.5A Linear Voltage 1 0.07 %/V - 1.5 %/V Through Hole Positive TO-220 - 3 1.3V Adjustable
RS Stock No. 168-6612
Mfr. Part No.L7805ABV
SGD0.674
Each (In a Tube of 50)
units
- 1A Linear Voltage 1 50 mV 2% 100 mV Through Hole Positive TO-220 4.3mA 3 - Fixed
RS Stock No. 533-9577
Mfr. Part No.LM1117MP-3.3/NOPB
SGD1.84
Each
units
- 800mA Low Dropout Voltage 1 1 mV ±1% 1 mV Surface Mount - SOT-223 - 4 - Fixed
RS Stock No. 121-8741
Mfr. Part No.LM1085IT-12/NOPB
SGD2.714
Each (In a Tube of 45)
units
- 3A Low Dropout Voltage 1 25 mV - 36 mV Through Hole Positive TO-220 - 3 - Fixed
RS Stock No. 779-9423
Mfr. Part No.LT1763CS8-5#PBF
SGD8.07
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. 298-8520
Mfr. Part No.L7808CV
SGD0.77
Each
units
- 1.5A Linear Voltage 1 160 mV - 160 mV Through Hole Positive TO-220 8mA 3 - Fixed
RS Stock No. 922-3491
Mfr. Part No.LM317KCS
SGD0.979
Each (In a Tube of 50)
units
- - - - - - - - - - - - - -
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. 122-3358
Mfr. Part No.AP2204K-ADJTRG1
SGD0.183
Each (On a Reel of 3000)
units
- 150mA Low Dropout Voltage 1 0.05 % - 0.5 % Surface Mount Positive SOT-23 50µA 5 1.24V Adjustable
RS Stock No. 620-1861
Mfr. Part No.TPS79501DCQ
SGD5.27
Each (In a Pack of 5)
units
- 500mA Low Dropout Voltage 1 0.05 %/V ±3% 3 mV Surface Mount Positive SOT-223 0.265mA 5+Tab 1.225V Adjustable
RS Stock No. 785-7272
Mfr. Part No.NCP551SN33T1G
SGD0.627
Each (In a Pack of 10)
units
- 150mA Low Dropout Voltage 1 30 mV 2% 65 mV Surface Mount Positive TSOP 8µA 5 - Fixed
RS Stock No. 102-5701
Mfr. Part No.LM2940T-12.0/NOPB
SGD2.174
Each (In a Tube of 45)
units
- 1A Low Dropout Voltage 1 120 mV - 120 mV Through Hole Positive TO-220 - 3 - Fixed
RS Stock No. 100-0719
Mfr. Part No.LM338T/NOPB
SGD2.966
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. 168-6060
Mfr. Part No.L7808CV
SGD0.606
Each (In a Tube of 50)
units
- 1.5A Linear Voltage 1 160 mV - 160 mV Through Hole Positive TO-220 8mA 3 - Fixed
RS Stock No. 189-1302
Mfr. Part No.L78L12ACZ
SGD0.59
Each
units
- 100mA Linear Voltage 1 250 mV ±5% 100 mV Through Hole Positive TO-92 6.5mA 3 - Fixed