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 1941 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. 296-778
Mfr. Part No.L7812CP
MYR2.33
Each
units
12 V 1.5A TO-220FP Fixed Through Hole - 35 V 3 - 0 °C +150 °C 1 Positive -
RS Stock No. 714-7768
Mfr. Part No.L78L05ACZTR
MYR1.38
Each (In a Pack of 25)
units
5 V 100mA TO-92 Fixed Through Hole - 30 V 3 - 0 °C +150 °C 1 Positive ±5%
RS Stock No. 298-8564
Mfr. Part No.L7824CV
MYR1.99
Each
units
24 V 1.5A TO-220 Fixed Through Hole - 40 V 3 - 0 °C +150 °C 1 Positive -
RS Stock No. 239-2963
Mfr. Part No.BA17805T
BrandROHM
MYR6.34
Each
units
5 V 1A TO-220FP Fixed Through Hole 7.5 V 25 V 3 2W -40 °C +85 °C 1 Positive -
RS Stock No. 714-0782
Mfr. Part No.LM317D2T-TR
MYR3.56
Each (In a Pack of 5)
units
1.2 → 37 V 1.5A D2PAK Adjustable Surface Mount - 40 V 3 - 0 °C +125 °C 1 Positive -
RS Stock No. 168-6062
Mfr. Part No.L7824CV
MYR1.53
Each (In a Tube of 50)
units
24 V 1.5A TO-220 Fixed Through Hole - 40 V 3 - 0 °C +150 °C 1 Positive -
RS Stock No. 661-3621
Mfr. Part No.LM317KTTR
MYR3.57
Each (In a Pack of 5)
units
1.25 → 37 V 1.5A D2PAK (TO-263) Adjustable Surface Mount 4.2 V 40 V 3 - 0 °C +125 °C 1 Positive -
RS Stock No. 162-9417
Mfr. Part No.MC78M06CTG
MYR1.71
Each (In a Tube of 50)
units
6 V 700mA TO-220 Fixed Through Hole - 40 V dc 3 5W 0 °C +125 °C 1 Positive -
RS Stock No. 113-8596
Mfr. Part No.LM317TG
MYR2.40
Each (In a Tube of 50)
units
1.2 → 37 V 2.2A TO-220 Adjustable Through Hole -0.3 V 40 V 3 - -55 °C +150 °C 1 - -
RS Stock No. 785-7030
Mfr. Part No.MC78M06CTG
MYR1.71
Each (In a Pack of 10)
units
6 V 700mA TO-220 Fixed Through Hole - 40 V dc 3 5W 0 °C +125 °C 1 Positive -
RS Stock No. 779-9628
Mfr. Part No.LT317AT#PBF
MYR20.065
Each (In a Pack of 2)
units
5 → 40 V 1.5A TO-220 Adjustable Through Hole 3 V 40 V 3 - 0 °C +125 °C 1 Positive -
RS Stock No. 145-2875
Mfr. Part No.MC78M20CTG
MYR1.73
Each (In a Tube of 50)
units
20 V 700mA TO-220 Fixed Through Hole - 40 V dc 3 5W 0 °C +125 °C 1 Positive -
RS Stock No. 100-0703
Mfr. Part No.LM340T-15/NOPB
MYR4.635
Each (In a Tube of 45)
units
15 V 1A TO-220 Fixed Through Hole 17.7 V 35 V 3 - 0 °C +125 °C 1 Positive ±2%
RS Stock No. 298-8520
Mfr. Part No.L7808CV
MYR1.92
Each
units
8 V 1.5A TO-220 Fixed Through Hole - 35 V 3 - 0 °C +150 °C 1 Positive -
RS Stock No. 178-5063
Mfr. Part No.LM317D2T-TR
MYR1.545
Each (On a Reel of 1000)
units
- - - - - - - - - - - - - -
RS Stock No. 168-6060
Mfr. Part No.L7808CV
MYR1.53
Each (In a Tube of 50)
units
8 V 1.5A TO-220 Fixed Through Hole - 35 V 3 - 0 °C +150 °C 1 Positive -
RS Stock No. 102-3493
Mfr. Part No.MC7824CTG
MYR2.06
Each (In a Tube of 50)
units
24 V 1A TO-220 Fixed Through Hole - 40 V 3 - 0 °C +125 °C 1 Positive ±4%
RS Stock No. 145-9425
Mfr. Part No.L78L05ACD13TR
MYR0.429
Each (On a Reel of 2500)
units
5 V 100mA SOIC Fixed Surface Mount - 30 V 8 - 0 °C +150 °C 1 Positive ±5%
RS Stock No. 661-6733
Mfr. Part No.UA78M33CDCY
MYR3.242
Each (In a Pack of 5)
units
3.3 V 500mA SOT-223 Fixed Surface Mount 5.3 V 25 V 3+Tab - 0 °C +125 °C 1 Positive -
RS Stock No. 155-5383
Mfr. Part No.LT317AT#PBF
MYR14.588
Each (In a Tube of 50)
units
5 → 40 V 1.5A TO-220 Adjustable Through Hole 3 V 40 V 3 - 0 °C +125 °C 1 Positive -
Related Products
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 ...
The Texas Instruments μA78 families are linear voltage ...
Description:
The Texas Instruments μA78 families are linear voltage regulators that cover a range of fixed output voltages from 2.6 V to 15 V.The three terminal positive voltage regulators offer thermal overload shutdown and internal current limiting. There is no need ...