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. 714-7768
Mfr. Part No.L78L05ACZTR
MYR1.25
Each (In a Pack of 25)
units
- 100mA Linear Voltage 1 150 mV ±5% 60 mV Through Hole Positive TO-92 6mA 3 - Fixed
RS Stock No. 102-3530
Mfr. Part No.L78S05CV
MYR1.594
Each (In a Tube of 50)
units
- 2A Linear Voltage 1 100 mV - 100 mV Through Hole Positive TO-220 8mA 3 - Fixed
RS Stock No. 189-1295
Mfr. Part No.L78L05ACZ
MYR1.96
Each
units
- 100mA Linear Voltage 1 150 mV ±5% 60 mV Through Hole Positive TO-92 6mA 3 - Fixed
RS Stock No. 661-4037
Mfr. Part No.TPS73618DBVT
MYR10.374
Each (In a Pack of 5)
units
- 400mA Low Dropout Voltage 1 0.01 %/V ±0.5% 0.002 %/mA Surface Mount Positive SOT-23 <0.001mA 5 - Fixed
RS Stock No. 124-6445
Mfr. Part No.BA033CC0FP-E2
BrandROHM
MYR4.158
Each (In a Pack of 5)
units
- 1A Low Dropout Voltage 1 100 mV - 150 mV Surface Mount Positive TO-252 - 3 - Fixed
RS Stock No. 296-778
Mfr. Part No.L7812CP
MYR2.33
Each
units
- 1.5A - 1 240 mV - 240 mV Through Hole Positive TO-220FP 8mA 3 - Fixed
RS Stock No. 884-2552
Mfr. Part No.LT1033CT#PBF
MYR29.735
Each (In a Pack of 2)
units
- 3A Linear Voltage 1 0.05 %/V ±1% 1.5 % Through Hole Negative TO-220 - 3 -1.25V Adjustable
RS Stock No. 102-3528
Mfr. Part No.L78S12CV
MYR2.772
Each (In a Tube of 50)
units
- 2A Linear Voltage 1 240 mV - 240 mV Through Hole Positive TO-220 8mA 3 - Fixed
RS Stock No. 887-7429
Mfr. Part No.MCP1700T-3302E/TT
BrandMicrochip
MYR1.394
Each (On a Reel of 3000)
units
- 250mA Low Dropout Voltage 1 0.75 %/V ±2% 1 % Surface Mount Positive SOT-23 0.0016mA 3 - Fixed
RS Stock No. 102-3529
Mfr. Part No.L78L05ACZTR
MYR0.443
Each (On a Reel of 2000)
units
- 100mA Linear Voltage 1 150 mV ±5% 60 mV Through Hole Positive TO-92 6mA 3 - Fixed
RS Stock No. 168-6049
Mfr. Part No.L78L05ACZ
MYR0.521
Each (In a Bag of 2500)
units
- 100mA Linear Voltage 1 150 mV ±5% 60 mV Through Hole Positive TO-92 6mA 3 - Fixed
RS Stock No. 714-7783
Mfr. Part No.L78S12CV
MYR2.907
Each (In a Pack of 10)
units
- 2A Linear Voltage 1 240 mV - 240 mV Through Hole Positive TO-220 8mA 3 - Fixed
RS Stock No. 714-7780
Mfr. Part No.L78S05CV
MYR2.783
Each (In a Pack of 10)
units
- 2A Linear Voltage 1 100 mV - 100 mV Through Hole Positive TO-220 8mA 3 - Fixed
RS Stock No. 100-5930
Mfr. Part No.LM1117MP-3.3/NOPB
MYR2.644
Each (On a Reel of 1000)
units
- 800mA Low Dropout Voltage 1 1 mV ±1% 1 mV Surface Mount Positive SOT-223 - 3+Tab - Fixed
RS Stock No. 851-6768
Mfr. Part No.LTC3260EMSE#PBF
MYR35.43
Each
units
- 100mA Charge Pump - - - - Surface Mount - MSOP - 16 - -
RS Stock No. 533-9577
Mfr. Part No.LM1117MP-3.3/NOPB
MYR5.12
Each
units
- 800mA Low Dropout Voltage 1 1 mV ±1% 1 mV Surface Mount - SOT-223 - 4 - Fixed
RS Stock No. 922-8478
Mfr. Part No.ZLDO1117K33TC
MYR1.059
Each (On a Reel of 2500)
units
- 1A Linear Voltage 1 0.2 % 2% 13 mV Surface Mount Positive TO-252 10mA 3 1.25V Fixed
RS Stock No. 162-8988
Mfr. Part No.NCP1117DT33T5G
MYR0.804
Each (On a Reel of 2500)
units
- 2.2A Low Dropout Voltage 1 4.5 mV ±1% 10 mV Surface Mount Positive DPAK 10mA 3 1.27V Fixed
RS Stock No. 145-5382
Mfr. Part No.KA317TU
MYR1.993
Each (In a Tube of 50)
units
- 2.2A - 1 0.04 %/V - 0.5 %/V Through Hole Positive TO-220 - 3 1.3V Adjustable
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