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. 533-9577
Mfr. Part No.LM1117MP-3.3/NOPB
HK$10.43
Each
units
- 800mA Low Dropout Voltage 1 1 mV ±1% 1 mV Surface Mount - SOT-223 - 4 - Fixed
RS Stock No. 100-5930
Mfr. Part No.LM1117MP-3.3/NOPB
HK$4.738
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. 100-0719
Mfr. Part No.LM338T/NOPB
HK$18.146
Each (In a Tube of 45)
units
- 5A Linear Voltage 1 0.03 %/V - 0.5 % Through Hole Positive TO-220 - 3 1.29V Adjustable
RS Stock No. 460-900
Mfr. Part No.LM338T/NOPB
HK$19.782
Each (In a Pack of 5)
units
- 5A Linear Voltage 1 0.03 %/V - 0.5 % Through Hole Positive TO-220 - 3 1.29V Adjustable
RS Stock No. 761-6567
Mfr. Part No.LP2998MR/NOPB
HK$19.226
Each (In a Pack of 5)
units
- 1.5A DC-DC 1 - - - Surface Mount - PSOP - 8 - Adjustable
RS Stock No. 504-5070
Mfr. Part No.LM2936Z-3.3/NOPB
HK$17.624
Each (In a Pack of 5)
units
- 50mA Low Dropout Voltage 1 30 mV ±2% 30 mV Through Hole Positive TO-92 - 3 - Fixed
RS Stock No. 162-4712
Mfr. Part No.LM2936Z-3.3/NOPB
HK$8.055
Each (In a Box of 1800)
units
- 50mA Low Dropout Voltage 1 30 mV ±2% 30 mV Through Hole Positive TO-92 - 3 - Fixed
RS Stock No. 162-6327
Mfr. Part No.LP2998MR/NOPB
HK$16.125
Each (In a Tube of 95)
units
- 1.5A Linear Voltage 1 - - - Surface Mount - PSOP - 8 - Adjustable
RS Stock No. 809-5407
Mfr. Part No.TLV1117-33IDCY
HK$6.731
Each (In a Pack of 20)
units
- 800mA Low Dropout Voltage 1 6 mV - 10 mV Surface Mount Positive SOT-223 15mA 3+Tab 3.432V Fixed
RS Stock No. 121-8407
Mfr. Part No.LT1054CP
HK$23.09
Each (In a Tube of 50)
units
- - Charge Pump - - - - Through Hole - PDIP - 8 - -
RS Stock No. 661-3778
Mfr. Part No.TLV1117-33IDCYR
HK$70.706
Each (In a Pack of 5)
units
- 800mA Low Dropout Voltage 1 0.2 % - 0.4 % Surface Mount Positive SOT-223 5mA 3+Tab - Fixed
RS Stock No. 922-3397
Mfr. Part No.TLV1117-33IDCYR
HK$1.886
Each (On a Reel of 2500)
units
- - - - - - - - - - - - - -
RS Stock No. 661-3974
Mfr. Part No.TPS73201DBVR
HK$14.018
Each (In a Pack of 5)
units
- 250mA Low Dropout Voltage 1 0.01 %/V ±0.5% 0.002 %/mA Surface Mount Positive SOT-23 - 5 1.2V Adjustable
RS Stock No. 145-0932
Mfr. Part No.TLV1117-33IDCY
HK$6.731
Each (In a Tube of 80)
units
- 800mA Low Dropout Voltage 1 6 mV - 10 mV Surface Mount Positive SOT-223 15mA 3+Tab 3.432V Fixed
RS Stock No. 526-763
Mfr. Part No.LT1054CP
HK$27.502
Each (In a Pack of 5)
units
- - Charge Pump - - - - Through Hole - PDIP - 8 - -
RS Stock No. 145-6362
Mfr. Part No.TPS79933DDCT
HK$5.449
Each (On a Reel of 250)
units
- 200mA Low Dropout Voltage 1 0.02 %/V ±1% 0.002 %/mA Surface Mount Positive SOT-23 0.04mA 5 - Fixed
RS Stock No. 545-8381
Mfr. Part No.TPS79933DDCT
HK$8.716
Each (In a Pack of 5)
units
- 200mA Low Dropout Voltage 1 0.02 %/V ±1% 0.002 %/mA Surface Mount Positive SOT-23 0.04mA 5 - Fixed
RS Stock No. 533-9583
Mfr. Part No.LM1117MP-5.0/NOPB
HK$23.56
Each
units
- 800mA Low Dropout Voltage 1 1 mV ±1% 1 mV Surface Mount Positive SOT-223 - 3+Tab - Fixed
RS Stock No. 102-5682
Mfr. Part No.LM1117IMP-ADJ/NOPB
HK$4.738
Each (On a Reel of 1000)
units
- 1.5A Low Dropout Voltage 1 0.035 % ±1% 0.2 % Surface Mount Positive SOT-223 - 3+Tab 1.262V Adjustable
RS Stock No. 817-5408
Mfr. Part No.TPS73801DCQR
HK$23.542
Each (In a Pack of 5)
units
- 1A Low Dropout Voltage 1 5 mV - 18 mV Surface Mount Positive SOT-223 1µA 5+Tab - Adjustable