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. 751-3102
Mfr. Part No.AP7333-33SAG-7
HK$2.783
Each (In a Pack of 50)
units
- 300mA Linear Voltage 1 0.2 %/V ±2% 0.6 % Surface Mount Positive SOT-23 85µA 3 - Fixed
RS Stock No. 922-8317
Mfr. Part No.AP7333-33SAG-7
HK$0.935
Each (On a Reel of 3000)
units
- 300mA Linear Voltage 1 0.2 %/V ±2% 0.6 % Surface Mount Positive SOT-23 85µA 3 - Fixed
RS Stock No. 122-3375
Mfr. Part No.AS78L05MTR-G1
HK$0.776
Each (On a Reel of 4000)
units
- 100mA Linear Voltage 1 150 mV ±5% 60 mV Surface Mount Positive SOIC 5.5mA 8 - Fixed
RS Stock No. 146-0950
Mfr. Part No.AZ1117H-3.3TRE1
HK$0.854
Each (On a Reel of 4000)
units
- 1A Low Dropout Voltage 1 6 mV 1% 10 mV Surface Mount Positive SOT-223 10mA 3+Tab - Fixed
RS Stock No. 828-7555
Mfr. Part No.AS78L05MTR-G1
HK$2.562
Each (In a Pack of 50)
units
- 100mA Linear Voltage 1 150 mV ±5% 60 mV Surface Mount Positive SOIC 5.5mA 8 - Fixed
RS Stock No. 921-0701
Mfr. Part No.AZ1117H-3.3TRE1
HK$2.906
Each (In a Pack of 50)
units
- 1A Low Dropout Voltage 1 6 mV 1% 10 mV Surface Mount Positive SOT-223 10mA 3+Tab - Fixed
RS Stock No. 121-9606
Mfr. Part No.AP7331-33WG-7
HK$1.05
Each (On a Reel of 3000)
units
- 300mA Low Dropout Voltage 1 0.2 %/V ±2% ±0.6 % Surface Mount Positive SOT-25 85µA 5 0.4V Fixed
RS Stock No. 822-8874
Mfr. Part No.AP7331-33WG-7
HK$3.087
Each (In a Pack of 50)
units
- 300mA Low Dropout Voltage 1 0.2 %/V ±2% ±0.6 % Surface Mount Positive SOT-25 85µA 5 0.4V Fixed
RS Stock No. 885-5432
Mfr. Part No.AZ1117H-5.0TRE1
HK$3.087
Each (In a Pack of 50)
units
- 1A Linear Voltage 1 10 mV ±1% 15 mV Surface Mount Positive SOT-223 10mA 3+Tab - Fixed
RS Stock No. 921-0672
Mfr. Part No.AZ1117CH-1.2TRG1
HK$2.279
Each (In a Pack of 50)
units
- 300mA Low Dropout Voltage 1 10 mV - 15 mV Surface Mount Positive SOT-223 6mA 3+Tab - Fixed
RS Stock No. 828-7606
Mfr. Part No.AZ1117CR-3.3TRG1
HK$2.426
Each (In a Pack of 50)
units
- 800mA Low Dropout Voltage 1 10 mV ±1% 15 mV Surface Mount Positive SOT-89 6mA 3 - Fixed
RS Stock No. 885-5423
Mfr. Part No.AS78L05ZTR-E1
HK$0.846
Each (In a Pack of 100)
units
- 100mA Linear Voltage 1 150 mV ±5% 60 mV Through Hole Positive TO-92 5.5mA 3 - Fixed
RS Stock No. 751-2890
Mfr. Part No.AP1117E33G-13
HK$3.014
Each (In a Pack of 50)
units
- 1A Linear Voltage 1 0.2 % - 33 mV Surface Mount Positive SOT-223 10mA 3+Tab - Fixed
RS Stock No. 146-0452
Mfr. Part No.AZ1117CH-1.2TRG1
HK$0.687
Each (On a Reel of 4000)
units
- 300mA Low Dropout Voltage 1 10 mV - 15 mV Surface Mount Positive SOT-223 6mA 3+Tab - Fixed
RS Stock No. 828-7356
Mfr. Part No.AP2125N-3.3TRG1
HK$1.143
Each (In a Pack of 100)
units
- - Low Dropout Voltage 1 15 mV ±2% 15 mV Surface Mount Positive SOT-23 90µA 3 - Fixed
RS Stock No. 828-7589
Mfr. Part No.AZ1085CD-ADJTRG1
HK$3.392
Each (In a Pack of 20)
units
- 3A Low Dropout Voltage 1 0.2 % - 0.4 % Surface Mount Positive TO-252 10mA 3 1.25V Adjustable
RS Stock No. 170-8930
Mfr. Part No.AZ1085CD-ADJTRG1
HK$1.564
Each (On a Reel of 2500)
units
- 3A Low Dropout Voltage 1 0.2 % - 0.4 % Surface Mount Positive TO-252 10mA 3 1.25V Adjustable
RS Stock No. 122-3353
Mfr. Part No.AP2125N-3.3TRG1
HK$0.491
Each (On a Reel of 3000)
units
- - Low Dropout Voltage 1 15 mV ±2% 15 mV Surface Mount Positive SOT-23 90µA 3 - Fixed
RS Stock No. 822-8871
Mfr. Part No.AP7332-3333W6-7
HK$4.883
Each (In a Pack of 20)
units
- 300mA Low Dropout Voltage 2 0.2 %/V ±2% ±0.6 % Surface Mount Positive SOT-26 80µA 6 0.8V Fixed
RS Stock No. 922-8474
Mfr. Part No.ZLDO1117G33TA
HK$1.718
Each (On a Reel of 1000)
units
- 1A Linear Voltage 1 0.2 % 2% 13 mV Surface Mount Positive SOT-223 10mA 3+Tab 1.25V Fixed