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. 121-8662
Mfr. Part No.TPS76333DBVT
MYR2.814
Each (On a Reel of 250)
units
- 150mA Low Dropout Voltage 1 0.07 %/V ±3% - Surface Mount Positive SOT-23 0.085mA 5 - Fixed
RS Stock No. 168-6062
Mfr. Part No.L7824CV
MYR1.712
Each (In a Tube of 50)
units
- 1.5A Linear Voltage 1 480 mV - 480 mV Through Hole Positive TO-220 8mA 3 - Fixed
RS Stock No. 779-9628
Mfr. Part No.LT317AT#PBF
MYR23.215
Each (In a Pack of 2)
units
- 1.5A Linear Voltage 1 0.02 %/V - 0.5 % Through Hole Positive TO-220 - 3 1.25V Adjustable
RS Stock No. 922-3520
Mfr. Part No.UA78M33CDCY
MYR1.963
Each (In a Tube of 80)
units
- - - - - - - - - - - - - -
RS Stock No. 298-8564
Mfr. Part No.L7824CV
MYR2.14
Each
units
- 1.5A Linear Voltage 1 480 mV - 480 mV Through Hole Positive TO-220 8mA 3 - Fixed
RS Stock No. 785-7030
Mfr. Part No.MC78M06CTG
MYR2.455
Each (In a Pack of 10)
units
- 700mA Linear Voltage 1 50 mV - 120 mV Through Hole Positive TO-220 6mA 3 - Fixed
RS Stock No. 688-9231
Mfr. Part No.MC33269DTRK-3.3G
MYR3.355
Each (In a Pack of 2)
units
- 800mA Low Dropout Voltage 1 0.3 % ±1% 0.5 % Surface Mount Positive DPAK 5.5mA 3 - Fixed
RS Stock No. 761-4609
Mfr. Part No.LM2940IMP-12/NOPB
MYR7.224
Each (In a Pack of 5)
units
- 1A Low Dropout Voltage 1 120 mV - 200 mV Surface Mount Positive SOT-223 20mA 3+Tab - Fixed
RS Stock No. 100-0703
Mfr. Part No.LM340T-15/NOPB
MYR6.09
Each (In a Tube of 45)
units
- 1A Linear Voltage 1 150 mV ±2% 150 mV Through Hole Positive TO-220 8mA 3 - Fixed
RS Stock No. 756-3930
Mfr. Part No.TA78M05F(TE16L1,NQ
BrandToshiba
MYR3.096
Each (In a Pack of 5)
units
- 500mA Linear Voltage 1 100 mV ±4% 100 mV Surface Mount Positive HSOP 8mA 3 - Fixed
RS Stock No. 686-9603
Mfr. Part No.L78L05ACD13TR
MYR2.569
Each (In a Pack of 50)
units
- 100mA Linear Voltage 1 150 mV ±5% 60 mV Surface Mount Positive SOIC 6mA 8 - Fixed
RS Stock No. 162-8724
Mfr. Part No.TLV1117LV12DCYR
MYR2.139
Each (On a Reel of 2500)
units
- 1A Low Dropout Voltage 1 5 mV 1.5% 35 mV Surface Mount Positive SOT-223 100µA 3+Tab - Fixed
RS Stock No. 537-8695
Mfr. Part No.LP38690DT-3.3/NOPB
MYR8.62
Each (In a Pack of 5)
units
- 1A Low Dropout Voltage 1 0.03 %/V ±2.5% 1.8 %/A Surface Mount Positive TO-252 - 3 - Fixed
RS Stock No. 661-3621
Mfr. Part No.LM317KTTR
MYR3.508
Each (In a Pack of 5)
units
- 1.5A Linear Voltage 1 0.04 %/V - 0.5 % Surface Mount Positive D2PAK (TO-263) - 3 1.3V Adjustable
RS Stock No. 773-7841
Mfr. Part No.NCV33063AVDR2G
MYR6.395
Each (In a Pack of 2)
units
Boost/Buck Controller, Inverting 1.5A Buck Boost Switching 1 3 (Inverting) mV, 12 (Step Down) mV, 30 (Step Up) mV - 0.022 (Inverting) V, 3 (Step Down) mV, 10 (Step Up) mV Surface Mount - SOIC - 8 - Adjustable
RS Stock No. 669-4872
Mfr. Part No.MCP1702T-3302E/MB
BrandMicrochip
MYR2.30
Each (In a Pack of 10)
units
- 250mA Low Dropout Voltage 1 0.1 %/V ±0.4% 1 % Surface Mount Positive SOT-89 0.002mA 3 - Fixed
RS Stock No. 163-1052
Mfr. Part No.NCV33063AVDR2G
MYR2.152
Each (On a Reel of 2500)
units
Boost/Buck Controller, Inverting 1.5A - 1 3 (Inverting) mV, 12 (Step Down) mV, 30 (Step Up) mV - 0.022 (Inverting) V, 3 (Step Down) mV, 10 (Step Up) mV Surface Mount - SOIC - 8 - Adjustable
RS Stock No. 661-6733
Mfr. Part No.UA78M33CDCY
MYR2.698
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. 146-0315
Mfr. Part No.MIC29302WU
BrandMicrochip
MYR8.621
Each (In a Tube of 50)
units
- 3A Low Dropout Voltage 1 0.5 % ±1% 1 % Surface Mount Positive D2PAK (TO-263) - 5 1.252V Adjustable
RS Stock No. 533-9448
Mfr. Part No.LM1086CT-3.3/NOPB
MYR8.62
Each
units
- 1.5A Low Dropout Voltage 1 0.015 % - 0.1 % Through Hole Positive TO-220 - 3 - Fixed