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. 124-6515
Mfr. Part No.BU25TD3WG-TR
BrandROHM
SGD0.493
Each (In a Pack of 30)
units
- 200mA Low Dropout Voltage 1 20 mV ±1% 80 mV Surface Mount Positive SSOP - 5 - Fixed
RS Stock No. 189-6985
Mfr. Part No.MAX667CSA+
SGD5.689
Each (In a Tube of 100)
units
- 250mA Low Dropout Voltage 1 10 mV - 100 mV Surface Mount Positive SOIC 0.02mA 8 1.225V Adjustable, Fixed
RS Stock No. 545-5584
Mfr. Part No.LT1129CT#PBF
SGD7.91
Each
units
- 700mA Low Dropout Voltage 1 10 mV - 20 mV Through Hole Positive TO-220 0.05mA 5 3.75V Adjustable
RS Stock No. 162-6016
Mfr. Part No.UA78L05AILP
SGD0.261
Each (In a Bag of 1000)
units
- 100mA Linear Voltage 1 150 mV ±5% 60 mV Through Hole Positive TO-92 - 3 - Fixed
RS Stock No. 146-1158
Mfr. Part No.MAX635ACPA+
SGD5.99
Each (In a Tube of 50)
units
Boost/Buck Controller, Inverting 525mA Buck Boost Switching 1 0.5 %V - 0.2 %V Through Hole - PDIP - 8 - Adjustable, Fixed
RS Stock No. 162-8724
Mfr. Part No.TLV1117LV12DCYR
SGD0.391
Each (On a Reel of 2500)
units
- 1A Low Dropout Voltage 1 5 mV 1.5% 35 mV Surface Mount Positive SOT-223 100µA 3+Tab - Fixed
RS Stock No. 162-9410
Mfr. Part No.MC7806BD2TR4G
SGD0.416
Each (On a Reel of 800)
units
- 2.2A Linear Voltage 1 120 mV - 120 mV Surface Mount Positive D2PAK 8mA 3 - Fixed
RS Stock No. 516-5073
Mfr. Part No.MC78LC33NTRG
SGD0.99
Each
units
- 80mA Linear Voltage 1 0.2 %/V ±2.5% 60 mV Surface Mount Positive TSOP 0.0011mA 5 - Fixed
RS Stock No. 155-7522
Mfr. Part No.LT1761ES5-3#TRMPBF
SGD2.549
Each (On a Reel of 500)
units
- 100mA Low Dropout Voltage 1 10 mV - 90 mV Surface Mount Positive TSOT-23 20µA 5 1.22V Fixed
RS Stock No. 124-6511
Mfr. Part No.BU12TD3WG-TR
BrandROHM
SGD0.493
Each (In a Pack of 30)
units
- 200mA Low Dropout Voltage 1 20 mV ±1% 80 mV Surface Mount Positive SSOP - 5 - Fixed
RS Stock No. 191-4303
Mfr. Part No.MAX743CWE+
SGD14.915
Each (In a Tube of 46)
units
- - Linear Voltage 1 0.05 %/% - 1 % Surface Mount Positive SOIC - 16 2 (Typ)V Adjustable
New
RS Stock No. 216-8576
Mfr. Part No.LT3010EMS8E#TRPBF
SGD6.33
Each (In a Pack of 2)
units
- 50mA - 1 15 mV - 20 mV - - MSOP - 8 - Adjustable, Fixed
RS Stock No. 182-8249
Mfr. Part No.AP7383-30W5-7
SGD0.454
Each (In a Pack of 50)
units
- 150mA Low Dropout Voltage 1 0.05 %/V - 0.5 V Surface Mount Positive SOT-25 1.8µA 5 - Fixed
RS Stock No. 162-4236
Mfr. Part No.LP5951MG-2.5/NOPB
SGD0.606
Each (On a Reel of 1000)
units
- 150mA - 1 - ±2% - Surface Mount Positive SC-70 - 5 - Fixed
RS Stock No. 206-0229
Mfr. Part No.AP7370-33SA-7
SGD0.612
Each (In a Pack of 25)
units
- 500mA Low Dropout Voltage 1 - ±2% - Surface Mount - SOT - 3 - Fixed
RS Stock No. 796-8095
Mfr. Part No.LP2951D
SGD1.24
Each (In a Pack of 5)
units
- 100mA Low Dropout Voltage 1 0.4 %/V 1.4% 0.3 % Surface Mount Positive SOIC 75µA 8 1.272V Adjustable
RS Stock No. 186-9102
Mfr. Part No.MC78M08ABDTG
SGD0.827
Each (In a Tube of 75)
units
- 500mA Low Dropout Voltage 1 50 mV ±2% 100 mV Surface Mount Positive DPAK 0.8mA 3 + Tab - Fixed
RS Stock No. 686-9369
Mfr. Part No.LD1117S25CTR
SGD0.606
Each (In a Pack of 25)
units
- 1.3A Low Dropout Voltage 1 6 mV ±1% 10 mV Surface Mount Positive SOT-223 5mA 3+Tab - Fixed
RS Stock No. 182-8289
Mfr. Part No.AP7384-33V-A
SGD0.454
Each (In a Pack of 50)
units
- 50mA Low Dropout Voltage 1 0.05 %/V - 0.5 V Through Hole Positive TO-92 2.5µA 3 - Fixed
RS Stock No. 168-8645
Mfr. Part No.LDK120PU25R
SGD0.395
Each (On a Reel of 3000)
units
- 200mA Low Dropout Voltage 1 0.05 %/V ±3% 0.006 %/mA Surface Mount Positive DFN 100µA 6 - Fixed