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. 822-8874
Mfr. Part No.AP7331-33WG-7
SGD0.535
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. 197-7191
Mfr. Part No.LM1085IT-ADJ/NOPB
SGD2.958
Each (In a Pack of 5)
units
- 3A Low Dropout Voltage 1 - 4% - Surface Mount - TO-220 - 3 - Adjustable
RS Stock No. 178-8983
Mfr. Part No.TPS76150DBVR
SGD0.865
Each (On a Reel of 3000)
units
- 100mA Low Dropout Voltage 1 10 mV ±2% - Surface Mount Positive SOT-23 0.09mA 5 - Fixed
RS Stock No. 134-9547
Mfr. Part No.NCP163AMX330TBG
SGD0.528
Each (In a Pack of 25)
units
- 250mA Low Dropout Voltage 1 0.02 %/V ±2% 0.001 %/mA Surface Mount - XDFN 20µA 4 - Fixed
RS Stock No. 460-764
Mfr. Part No.LM340T-15/NOPB
SGD3.276
Each (In a Pack of 5)
units
- 1A Linear Voltage 1 150 mV ±2% 150 mV Through Hole Positive TO-220 8mA 3 - Fixed
RS Stock No. 145-9022
Mfr. Part No.MCP1755S-3302E/DB
BrandMicrochip
SGD0.917
Each (In a Tube of 78)
units
- 300mA Low Dropout Voltage 1 0.05 %/V - 0.5 % Surface Mount Positive SOT-223 100µA 3+Tab - Fixed
RS Stock No. 191-3303
Mfr. Part No.MAX15462BATA+T
SGD1.989
Each (On a Reel of 2500)
units
- 300mA Linear Voltage 1 - - - Surface Mount Negative TDFN - 8 - Fixed
RS Stock No. 805-6534
Mfr. Part No.MC7824BD2TG
SGD1.07
Each (In a Pack of 20)
units
- 1A Linear Voltage 1 480 mV - 480 mV Surface Mount Positive D2PAK 8mA 3 - Fixed
RS Stock No. 770-9502
Mfr. Part No.MCP1703AT-1502E/CB
BrandMicrochip
SGD0.886
Each (In a Pack of 10)
units
- 230mA Low Dropout Voltage 1 0.3 %/V 2% 2.5 % Surface Mount Positive SOT-23A 5µA 3 - Fixed
RS Stock No. 785-2640
Mfr. Part No.NCV33375D-3.3R2G
SGD2.14
Each (On a Tape of 5)
units
- 300mA Low Dropout Voltage 1 10 mV - 25 mV Surface Mount Positive SOIC 200µA 8 - Fixed
RS Stock No. 146-8959
Mfr. Part No.MCP1810T-25I/J8A
BrandMicrochip
SGD0.601
Each (In a Pack of 25)
units
- 150mA Low Dropout Voltage 1 ±4 %/V - ±3 %/V Surface Mount Positive VDFN 50nA 8 ≤1.8V Fixed
RS Stock No. 785-7402
Mfr. Part No.NCV1117DT18T5G
SGD0.825
Each (On a Tape of 10)
units
- 2.2A Low Dropout Voltage 1 0.1 % ±1% 0.4 % Surface Mount Positive DPAK 10mA 3 1.25V Fixed
RS Stock No. 162-8632
Mfr. Part No.LP2985IM5-2.7/NOPB
SGD0.504
Each (On a Reel of 1000)
units
- 350mA Low Noise LDO 1 0.032 %/V 1% - Surface Mount Positive SOT-23 <1µA 5 - Fixed
RS Stock No. 825-1045
Mfr. Part No.MCP1700T-1202E/MB
BrandMicrochip
SGD0.558
Each (In a Pack of 20)
units
- 250mA Low Dropout Voltage 1 1 % - 1.5 % Surface Mount Positive SOT-89 4µA 3 - Fixed
RS Stock No. 182-8286
Mfr. Part No.AP7381-50V-A
SGD0.502
Each (In a Pack of 50)
units
- 150mA Low Dropout Voltage 1 0.05 %/V - 0.5 V Through Hole Positive TO-92 2.5µA 3 - Fixed
RS Stock No. 785-7018
Mfr. Part No.MC78L18ACPRAG
SGD0.599
Each (In a Pack of 20)
units
- 100mA Linear Voltage 1 325 mV - 170 mV Through Hole Positive TO-92 6.5mA 3 - Fixed
RS Stock No. 160-4492
Mfr. Part No.ADP160AUJZ-2.5-R7
SGD0.90
Each (On a Reel of 3000)
units
- 150mA Low Dropout Voltage 1 ±0.1 %/V ±3.5% 0.01 %/mA Surface Mount Positive TSOT 860nA 5 - Fixed
RS Stock No. 163-0957
Mfr. Part No.MC7924BTG
SGD0.802
Each (In a Tube of 50)
units
- 1A Linear Voltage 1 470 mV - 480 mV Through Hole Negative TO-220 8mA 3 - Fixed
RS Stock No. 144-5788
Mfr. Part No.MCP1700T-5002E/MB
BrandMicrochip
SGD0.45
Each (On a Reel of 1000)
units
- 250mA Low Dropout Voltage 1 0.75 %/V 3% 1 % Surface Mount Positive SOT-89 0.0016mA 3 - Fixed
RS Stock No. 102-5759
Mfr. Part No.LP2980AIM5-5.0/NOPB
SGD0.601
Each (On a Reel of 1000)
units
- 50mA Low Dropout Voltage 1 0.014 %/V ±0.75% - Surface Mount Positive SOT-23 - 5 - Fixed