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 2001 - 2020 of 2021 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. 165-7755
Mfr. Part No.L79L05ABUTR
MYR0.479
Each (On a Reel of 2500)
units
-5 V 100mA SOT-89 Fixed Surface Mount - -30 V 3 - -40 °C +125 °C 1 Negative -
New
RS Stock No. 188-9271
Mfr. Part No.L78M08CDT-TR
MYR2.356
Each (In a Pack of 25)
units
8 V 500mA DPAK Fixed Surface Mount - 35 V 2 + Tab - 0 °C +150 °C 1 Positive -
RS Stock No. 145-4007
Mfr. Part No.MC7824BD2TG
MYR1.826
Each (In a Tube of 50)
units
24 V 1A D2PAK Fixed Surface Mount - 40 V 3 - -40 °C +125 °C 1 Positive -
RS Stock No. 102-5754
Mfr. Part No.LM78L12ACM/NOPB
MYR2.56
Each (In a Tube of 95)
units
12 V 100mA SOIC Fixed Surface Mount 13.7 V 35 V 8 0.75W 0 °C +125 °C 1 Positive ±5%
RS Stock No. 2508962372
Mfr. Part No.NTE960
MYR7.00
Each
units
- - - - - - - - - - - - - -
RS Stock No. 2508962653
Mfr. Part No.NTE935
MYR70.06
Each
units
- - - - - - - - - - - - - -
RS Stock No. 2508962271
Mfr. Part No.NTE1915
MYR36.23
Each
units
- - - - - - - - - - - - - -
RS Stock No. 2508958682
Mfr. Part No.NTE933
MYR241.36
Each
units
- - - - - - - - - - - - - -
RS Stock No. 2508955655
Mfr. Part No.NTE950
MYR6.66
Each
units
- - - - - - - - - - - - - -
RS Stock No. 2508958799
Mfr. Part No.NTE931
MYR148.40
Each
units
- - - - - - - - - - - - - -
RS Stock No. 2508958238
Mfr. Part No.NTE969
MYR7.00
Each
units
- - - - - - - - - - - - - -
RS Stock No. 2508957190
Mfr. Part No.NTE964
MYR7.00
Each
units
- - - - - - - - - - - - - -
RS Stock No. 2508958446
Mfr. Part No.NTE961
MYR7.00
Each
units
- - - - - - - - - - - - - -
RS Stock No. 2508962401
Mfr. Part No.NTE972
MYR7.00
Each
units
- - - - - - - - - - - - - -
RS Stock No. 2508962293
Mfr. Part No.NTE1914
MYR36.23
Each
units
- - - - - - - - - - - - - -
RS Stock No. 2508957184
Mfr. Part No.NTE956
MYR9.35
Each
units
- - - - - - - - - - - - - -
RS Stock No. 2508957207
Mfr. Part No.NTE968
MYR7.00
Each
units
- - - - - - - - - - - - - -
RS Stock No. 2508958547
Mfr. Part No.NTE970
MYR67.42
Each
units
- - - - - - - - - - - - - -
RS Stock No. 2508962394
Mfr. Part No.NTE967
MYR7.00
Each
units
- - - - - - - - - - - - - -
RS Stock No. 2508958626
Mfr. Part No.NTE309K
MYR49.50
Each
units
- - - - - - - - - - - - - -
Related Products
The ON Semiconductor MC78M00/MC78M00A linear voltage regulator is ...
Description:
The ON Semiconductor MC78M00/MC78M00A linear voltage regulator is a robust device that combines Internal current limiting, thermal shutdown and output transistor safe operating area protection. It can be used in many applications including local, on-card voltage regulation. Available in 5 ...
ROHM's broad lineup of 78 series regulators is ...
Description:
ROHM's broad lineup of 78 series regulators is available in 11 output voltages (5V, 6V, 7V, 8V, 9V, 10V, 12V, 15V, 18V, 20V, and 24V), 2 current types, and different package configurations, making them ideal for a wide variety of ...
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 ...