Linear Voltage Regulators

A Linear Voltage Regulator ensures the output voltage from the circuit is maintained at a specific voltage.

The device acts as a variable resistor, continuously adjusting to maintain a constant output voltage. The regulated voltage must be lower than the input voltage. Simple voltage regulator contains a Zener Diode and a resistor but more complicated versions include elements like a voltage reference and error amplifiers.

A more specific type of regulator are Low Dropout Voltage Regulators (LDO) which can regulate voltage even when the power supply voltage is very close to the supply voltage.


How to choose linear voltage regulator ICs?


The primary feature in choosing a regulator is usually the Output voltage as the main purpose of one is to regulate the voltage to a specific value such as 3.3V. Its accuracy to this voltage across temperature and load current is another consideration as is its maximum load. The dropout voltage value will be particularly important with battery applications.


How to test a linear voltage regulator?


  1. Set your multimeter to the voltage setting
  2. Check the datasheet to determine which pins are the ground, input and output.
  3. Attach the red wire to the input and the black wire to the ground, the multimeter should give a reading higher than the regulators' output value. If not then there is a power supply issue.
  4. Attach the red to the ground and the black wire the output, the multimeter should then give the regulators' output value (plus minus its accuracy). If not then the regulator is likely to be faulty.

...
Read more Read less

Filters

Viewing 61 - 80 of 1882 products
Results per page
Description Price Output Voltage Maximum Output Current Package Type Output Type Mounting Type Minimum Input Voltage Maximum Input Voltage Pin Count Power Rating Minimum Operating Temperature Maximum Operating Temperature Number of Outputs Polarity Accuracy
RS Stock No. 751-2890
Mfr. Part No.AP1117E33G-13
SGD0.554
Each (In a Pack of 50)
units
3.3 V 1A SOT-223 Fixed Surface Mount 6.4 V 18 V 3+Tab - 0 °C +125 °C 1 Positive -
RS Stock No. 178-5153
Mfr. Part No.L78L12ACZ-AP
SGD0.151
Each (On a Reel of 2500)
units
- - - - - - - - - - - - - -
RS Stock No. 922-3491
Mfr. Part No.LM317KCS
SGD0.506
Each (In a Tube of 50)
units
- - - - - - - - - - - - - -
RS Stock No. 686-9653
Mfr. Part No.L78L12ACZ-AP
SGD0.485
Each (In a Pack of 50)
units
12 V 100mA TO-92 Fixed Through Hole - 35 V 3 - 0 °C +150 °C 1 Positive ±5%
RS Stock No. 102-3501
Mfr. Part No.MC78L05ACPG
SGD0.183
Each (In a Bag of 2000)
units
5 V 100mA TO-92 Fixed Through Hole - 30 V 3 - 0 °C +125 °C 1 Positive -
RS Stock No. 168-5783
Mfr. Part No.L7805CP
SGD1.081
Each (In a Tube of 50)
units
5 V 1.5A TO-220FP Fixed Through Hole - 35 V 3 - 0 °C +150 °C 1 Positive -
RS Stock No. 795-9025
Mfr. Part No.L78L12ACZ-TR
SGD0.408
Each (In a Pack of 50)
units
12 V 100mA TO-92 Fixed Through Hole - 40 V 3 - 0 °C +125 °C 1 Positive -
RS Stock No. 163-2478
Mfr. Part No.MC7805CDTRKG
SGD0.269
Each (On a Reel of 2500)
units
5 V 2.2A DPAK Fixed Surface Mount - 35 V 3 - 0 °C +125 °C 1 Positive ±4%
RS Stock No. 463-460
Mfr. Part No.MC78M05BDTG
SGD0.707
Each (In a Pack of 10)
units
5 V 700mA DPAK Fixed Surface Mount - 35 V 3 - -40 °C +125 °C 1 Positive -
RS Stock No. 163-2487
Mfr. Part No.MC78M05BDTRKG
SGD0.226
Each (On a Reel of 2500)
units
5 V 700mA DPAK Fixed Surface Mount - 35 V 3 - -40 °C +125 °C 1 Positive -
RS Stock No. 170-3503
Mfr. Part No.MC79M12BTG
SGD0.731
Each (In a Tube of 50)
units
-12 V 500mA TO-220 Fixed Through Hole - -35 V dc 3 - -40 °C +125 °C 1 Negative -
RS Stock No. 688-9216
Mfr. Part No.LM317LDR2G
SGD0.56
Each (In a Pack of 2)
units
1.2 → 37 V 100mA SOIC Adjustable Surface Mount 4.2 V - 8 - 0 °C +125 °C 1 Positive ±4%
RS Stock No. 178-4734
Mfr. Part No.LM337BD2TG
SGD1.652
Each (In a Tube of 50)
units
-37 → -1.2 V 1.5A D2PAK Adjustable Surface Mount - -40 V 3 - -40 °C +125 °C 1 Negative -
RS Stock No. 516-5269
Mfr. Part No.LM337BTG
SGD1.37
Each
units
-37 → -1.2 V 1.5A TO-220 Adjustable Through Hole - -40 V 3 - -40 °C +125 °C 1 Negative -
RS Stock No. 686-9357
Mfr. Part No.L7806CD2T-TR
SGD0.981
Each (In a Pack of 10)
units
6 V 1.5A D2PAK Fixed Surface Mount - 35 V 3 - 0 °C +150 °C 1 Positive -
RS Stock No. 163-2414
Mfr. Part No.LM337BTG
SGD1.204
Each (In a Tube of 50)
units
-37 → -1.2 V 1.5A TO-220 Adjustable Through Hole - -40 V 3 - -40 °C +125 °C 1 Negative -
RS Stock No. 157-8360
Mfr. Part No.LT1033CT#PBF
SGD6.261
Each (In a Tube of 50)
units
-1.2 → -32 V 3A TO-220 Adjustable Through Hole - - 3 - 0 °C +125 °C 1 Negative ±1%
RS Stock No. 688-9294
Mfr. Part No.MC78M05CDTRKG
SGD0.645
Each (In a Pack of 2)
units
5 V 700mA DPAK Fixed Surface Mount - 35 V 3 - 0 °C +125 °C 1 Positive -
RS Stock No. 178-5053
Mfr. Part No.L7806CD2T-TR
SGD0.478
Each (On a Reel of 1000)
units
- - - - - - - - - - - - - -
RS Stock No. 121-6354
Mfr. Part No.MC7809ACTG
SGD0.692
Each (In a Tube of 50)
units
9 V 2.2A TO-220 Fixed Through Hole - 40 V dc 3 15W 0 °C +125 °C 1 Positive -
Related Products
STMicroelectronics L78 Series of fixed output voltage regulators ...
Description:
STMicroelectronics L78 Series of fixed output voltage regulators are useful in a wide range of applications within the electronics Industry. The three terminal positive linear voltage regulators can remove problems that are related with single point regulation by providing local ...
STMicroelectronics L78 Series of fixed output voltage regulators ...
Description:
STMicroelectronics L78 Series of fixed output voltage regulators are useful in a wide range of applications within the electronics Industry. The three terminal positive linear voltage regulators can remove problems that are related with single point regulation by providing local ...
STMicroelectronics L78 Series of fixed output voltage regulators ...
Description:
STMicroelectronics L78 Series of fixed output voltage regulators are useful in a wide range of applications within the electronics Industry. The three terminal positive linear voltage regulators can remove problems that are related with single point regulation by providing local ...
The TL780 series precision voltage regulators have a ...
Description:
The TL780 series precision voltage regulators have a fixed output of 5 V, 12 V or 15 V and supply 1.5 A of load current. Texas Instruments positive linear voltage regulators offer unique temperature-compensation technique, coupled with an internally trimmed ...