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. 121-9161
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. 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. 163-0770
Mfr. Part No.NCV8664DT50RKG
MYR4.085
Each (On a Reel of 2500)
units
- 150mA Low Dropout Voltage 1 25 mV ±2% 35 mV Surface Mount Positive DPAK 30µA 3 1.3V Fixed
RS Stock No. 100-5964
Mfr. Part No.LP2950CZ-5.0/NOPB
MYR2.658
Each (On a Reel of 1800)
units
- 100mA Low Dropout Voltage 1 0.2 % ±0.5% 0.2 % Through Hole Positive TO-92 - 3 - Fixed
RS Stock No. 534-4939
Mfr. Part No.LP2950CZ-5.0/NOPB
MYR3.81
Each
units
- 100mA Low Dropout Voltage 1 0.2 % ±0.5% 0.2 % Through Hole Positive TO-92 - 3 - Fixed
RS Stock No. 761-5602
Mfr. Part No.LM2937IMP-8.0/NOPB
MYR7.20
Each (On a Tape of 5)
units
- 400mA Low Dropout Voltage 1 80 mV 5% 80 mV Surface Mount Positive SOT-223 20mA 3+Tab - Fixed
RS Stock No. 918-1975
Mfr. Part No.L7812CV
MYR1.607
Each (In a Tube of 50)
units
- 1.5A Linear Voltage 1 240 mV - 240 mV Through Hole Positive TO-220 8mA 3 - Fixed
RS Stock No. 533-8209
Mfr. Part No.LM317T/NOPB
MYR14.14
Each
units
- 1.5A Linear Voltage 1 0.04 %/V - 0.5 % Through Hole Positive TO-220 - 3 1.25V Adjustable
RS Stock No. 918-1971
Mfr. Part No.L7805CV
MYR1.827
Each (In a Tube of 50)
units
- 1.5A Linear Voltage 1 100 mV - 100 mV Through Hole Positive TO-220 8mA 3 - Fixed
RS Stock No. 162-6221
Mfr. Part No.LM2937IMP-8.0/NOPB
MYR7.293
Each (On a Reel of 1000)
units
- 400mA Low Dropout Voltage 1 80 mV 5% 80 mV Surface Mount Positive SOT-223 20mA 3+Tab - Fixed
RS Stock No. 809-9809
Mfr. Part No.ADP7104ARDZ-R7
MYR21.105
Each (In a Pack of 2)
units
- 500mA Low Noise LDO 1 0.015 %/V 1.232V 0.75 %/A Surface Mount Positive SOIC 1mA 8 1.22V Adjustable
RS Stock No. 160-3383
Mfr. Part No.ADP7104ARDZ-R7
MYR14.268
Each (On a Reel of 1000)
units
- 500mA Low Noise LDO 1 0.015 %/V 1.232V 0.75 %/A Surface Mount Positive SOIC 1mA 8 1.22V Adjustable
RS Stock No. 100-5905
Mfr. Part No.LM317T/NOPB
MYR13.783
Each (In a Tube of 45)
units
- 1.5A Linear Voltage 1 0.04 %/V - 0.5 % Through Hole Positive TO-220 - 3 1.25V Adjustable
RS Stock No. 535-9408
Mfr. Part No.LM350T/NOPB
MYR8.41
Each (In a Pack of 5)
units
- 3A Linear Voltage 1 0.03 %/V - 0.5 % Through Hole Positive TO-220 - 3 1.3V Adjustable
RS Stock No. 922-8288
Mfr. Part No.AP1117E50G-13
MYR0.547
Each (On a Reel of 2500)
units
- 1A Linear Voltage 1 0.2 % - 50 mV Surface Mount Positive SOT-223 10mA 3+Tab - Fixed
RS Stock No. 102-5710
Mfr. Part No.LM350T/NOPB
MYR10.028
Each (In a Tube of 45)
units
- 3A Linear Voltage 1 0.03 %/V - 0.5 % Through Hole Positive TO-220 - 3 1.3V Adjustable
RS Stock No. 661-4501
Mfr. Part No.TPS79601KTTT
MYR20.44
Each
units
- 1A Low Dropout Voltage 1 0.05 %/V ±2% 5 mV Surface Mount Positive D2PAK (TO-263) 0.265mA 5 1.225V Adjustable
RS Stock No. 163-2414
Mfr. Part No.LM337BTG
MYR3.203
Each (In a Tube of 50)
units
- 1.5A Linear Voltage 1 0.04 %/V - 1 % Through Hole Negative TO-220 - 3 -1.25V Adjustable
RS Stock No. 822-6584
Mfr. Part No.LTC3789EGN#PBF
MYR47.30
Each
units
Buck-Boost 100mA Buck Boost Switching 1 0.02 %/V - 0.1 % Surface Mount - SSOP - 28 - Adjustable
RS Stock No. 858-0832
Mfr. Part No.LT1084CT-5#PBF
MYR43.25
Each
units
- 5A Low Noise LDO 1 10 mV - 35 mV Through Hole Positive TO-220 10mA 3 - Fixed