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. 858-0835
Mfr. Part No.LT1084CT#PBF
HK$99.80
Each
units
- 5A Low Noise LDO 1 0.015 % - 0.1 % Through Hole Positive TO-220 - 3 - Adjustable
RS Stock No. 884-2552
Mfr. Part No.LT1033CT#PBF
HK$66.94
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. 779-9628
Mfr. Part No.LT317AT#PBF
HK$47.365
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. 545-4884
Mfr. Part No.LT1085CT#PBF
HK$83.23
Each
units
- 3A Low Dropout Voltage 1 0.2 % - 0.3 % Through Hole Positive TO-220 - 3 1.262V Adjustable
RS Stock No. 742-7691
Mfr. Part No.ADP150AUJZ-3.3-R7
HK$9.72
Each (In a Pack of 5)
units
- 150mA Low Dropout Voltage 1 0.05 %/V -2.5 → 1.5% 0.008 %/mA Surface Mount Positive TSOT 0.01mA 5 - Fixed
RS Stock No. 912-9589
Mfr. Part No.ADP150AUJZ-3.3-R7
HK$4.631
Each (On a Reel of 3000)
units
- 150mA Linear Voltage 1 0.05 %/V -2.5 → 1.5% 0.008 %/mA Surface Mount Positive TSOT 0.01mA 5 - Fixed
RS Stock No. 779-9038
Mfr. Part No.LT1084IT#PBF
HK$116.06
Each
units
- 5A Low Dropout Voltage 1 0.5 % - 0.4 % Through Hole Positive TO-220 10mA 3 1.25V Adjustable
RS Stock No. 779-9619
Mfr. Part No.LT337AT#PBF
HK$47.365
Each (In a Pack of 2)
units
- 1.5A Linear Voltage 1 0.03 %/V - 1 % Through Hole Negative TO-220 - 3 -1.25V Adjustable
RS Stock No. 779-9423
Mfr. Part No.LT1763CS8-5#PBF
HK$45.465
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. 761-8611
Mfr. Part No.LT3080EDD#PBF
HK$44.61
Each
units
- 1.1A Low Dropout Voltage 1 0.003 mV/V 1% 1.3 mV Surface Mount Positive DFN 1mA 8 - Adjustable
RS Stock No. 858-0838
Mfr. Part No.LT1084CT-12#PBF
HK$99.80
Each
units
- 5A Low Noise LDO 1 25 mV - 72 mV Through Hole Positive TO-220 10mA 3 - Fixed
RS Stock No. 545-6408
Mfr. Part No.LT1584CT#PBF
HK$122.25
Each
units
- 7A Low Dropout Voltage 1 - - - Through Hole Positive TO-220 8mA 3 1.25V Adjustable
RS Stock No. 779-8981
Mfr. Part No.LT1070CT#PBF
HK$118.07
Each
units
Boost/Buck Controller, Cuk, Flyback, Forward, Inverting 5A Buck Boost Switching 1 0.03 %/V - - Through Hole - TO-220 - 5 - -
RS Stock No. 145-1189
Mfr. Part No.LT1584CT#PBF
HK$95.841
Each (In a Tube of 50)
units
- 7A Low Dropout Voltage 1 - - - Through Hole Positive TO-220 8mA 3 1.25V Adjustable
RS Stock No. 545-5736
Mfr. Part No.LT1085CT-12#PBF
HK$79.23
Each
units
- 3A Low Dropout Voltage 1 0.015 % ±1% 0.1 % Through Hole Positive TO-220 5mA 3 - Fixed
RS Stock No. 545-5720
Mfr. Part No.LT1085CT-5#PBF
HK$76.92
Each
units
- 3A Low Dropout Voltage 1 0.015 % ±1% 0.1 % Through Hole Positive TO-220 5mA 3 - Fixed
RS Stock No. 506-3804
Mfr. Part No.LT1764EQ#PBF
HK$71.70
Each
units
- 3A Low Dropout Voltage 1 10 mV - 5 mV Surface Mount Positive D2PAK 1mA 6 1.21V Adjustable
RS Stock No. 545-4890
Mfr. Part No.LT1086CT#PBF
HK$47.37
Each
units
- 1.5A Low Dropout Voltage 1 0.2 % - 0.3 % Through Hole Positive TO-220 5mA 3 1.262V Adjustable
RS Stock No. 411-952
Mfr. Part No.LT1764AEQ#PBF
HK$71.70
Each
units
- 3A Low Noise LDO 1 10 mV - 20 mV Surface Mount Positive D2PAK 1mA 5 1.21V Adjustable
RS Stock No. 884-2556
Mfr. Part No.LT1963AET#PBF
HK$59.335
Each (In a Pack of 2)
units
- 1.5A Low Dropout Voltage 1 5 mV - 15 mV Through Hole Positive TO-220 1µA 5 1.21V Adjustable