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 1 - 20 of 61 products
Results per page
Description Price Output Voltage Maximum Output Current Output Type Package 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. 912-9589
Mfr. Part No.ADP150AUJZ-3.3-R7
kr 4,836
Each (On a Reel of 3000)
Units
3.3 V 150mA Fixed TSOT Surface Mount 2.2 V 5.5 V 5 - -40 °C +125 °C 1 Positive -2.5 1.5%
RS Stock No. 742-7691
Mfr. Part No.ADP150AUJZ-3.3-R7
kr 8,894
Each (In a Pack of 5)
Units
3.3 V 150mA Fixed TSOT Surface Mount 2.2 V 5.5 V 5 - -40 °C +125 °C 1 Positive -2.5 → 1.5%
RS Stock No. 759-1809
Mfr. Part No.ADP2108AUJZ-3.3-R7
kr 15,274
Each (In a Pack of 5)
Units
3.3 V 600mA Fixed TSOT Surface Mount 2.3 V 5.5 V 5 - -40 °C +125 °C 1 Positive ±2%
RS Stock No. 155-7581
Mfr. Part No.LT3015EQ#PBF
kr 50,349
Each (In a Tube of 50)
Units
-1.22 -29.3 V 1.5A Adjustable D2PAK Surface Mount -1.8 V -30 V 5 - -40 °C +125 °C 1 Negative -
RS Stock No. 912-9696
Mfr. Part No.ADP2108AUJZ-3.3-R7
kr 7,842
Each (On a Reel of 3000)
Units
3.3 V 600mA Fixed TSOT Surface Mount 2.3 V 5.5 V 5 - -40 °C +125 °C 1 Positive ±2%
RS Stock No. 822-9921
Mfr. Part No.LT3015EQ#PBF
kr 61,12
Each
Units
-1.22 -29.3 V 1.5A Adjustable D2PAK Surface Mount -1.8 V -30 V 5 - -40 °C +125 °C 1 Negative -
RS Stock No. 822-6749
Mfr. Part No.LT3050EMSE#PBF
kr 32,85
Each (In a Pack of 2)
Units
0.6 44.5 V 100mA Adjustable MSOP Surface Mount 1.6 V 45 V 8 - -40 °C +125 °C 1 Positive ±2%
RS Stock No. 155-7558
Mfr. Part No.LT3050EMSE#PBF
kr 21,692
Each (In a Tube of 37)
Units
0.6 44.5 V 100mA Adjustable MSOP Surface Mount 1.6 V 45 V 12 - -40 °C +125 °C 1 Positive ±2%
RS Stock No. 183-2579
Mfr. Part No.ADP1715ARMZ-1.2-R7
kr 21,734
Each (In a Pack of 5)
Units
1.2 V 500mA Fixed MSOP Surface Mount 2.5 V 5.5 V 8 - -40 °C +125 °C 1 - ±3%
RS Stock No. 798-9944
Mfr. Part No.ADM7150ARDZ-3.3
kr 72,28
Each
Units
3.3 V 800mA Fixed SOIC Surface Mount 4.5 V 16 V 8 - -40 °C +125 °C 1 Positive ±1%
RS Stock No. 183-2279
Mfr. Part No.ADP151ACBZ-3.3-R7
kr 4,327
Each (On a Reel of 3000)
Units
3.3 V 200mA Fixed WLCSP Surface Mount 2.2 V 5.5 V 4 - -40 °C +125 °C 1 - ±2%
RS Stock No. 183-2332
Mfr. Part No.HMC1060LP3ETR
kr 48,604
Each (On a Reel of 500)
Units
5.2 V 500mA Adjustable SMT Surface Mount 3.35 V 5.6 V 16 - -40 °C +85 °C 4 - -
RS Stock No. 798-9950
Mfr. Part No.ADM7151ARDZ-04
kr 71,39
Each
Units
1.5 5.1 V 800mA Adjustable SOIC Surface Mount 4.5 V 16 V 8 - -40 °C +125 °C 1 Positive ±1%
RS Stock No. 862-6281
Mfr. Part No.HMC1060LP3E
kr 67,10
Each
Units
1.8 5.2 V 500mA Adjustable QFN Surface Mount 3.35 V 5.6 V 16 - -40 °C +85 °C 4 Positive 2%
RS Stock No. 798-9938
Mfr. Part No.ADM7150ARDZ-1.8
kr 72,28
Each
Units
1.8 V 800mA Fixed SOIC Surface Mount 4.5 V 16 V 8 - -40 °C +125 °C 1 Positive ±1%
RS Stock No. 912-8078
Mfr. Part No.ADP123AUJZ-R7
kr 5,266
Each (On a Reel of 3000)
Units
0.8 5 V 300mA Adjustable TSOT Surface Mount 2.3 V 5.5 V 5 - -40 °C +125 °C 1 Positive ±1%
RS Stock No. 159-9540
Mfr. Part No.ADM7150ARDZ-2.8
kr 42,576
Each (In a Tube of 98)
Units
2.8 V 800mA Fixed SOIC Surface Mount 4.5 V 16 V 8 - -40 °C +125 °C 1 Positive ±1%
RS Stock No. 155-5379
Mfr. Part No.LT337AT#PBF
kr 31,738
Each (In a Tube of 50)
Units
-1.2 -37 V 1.5A Adjustable TO-220 Through Hole 3 V 40 V 3 - 0 °C +125 °C 1 Negative -
RS Stock No. 742-7764
Mfr. Part No.ADP151AUJZ-3.3-R7
kr 4,91
Each
Units
3.3 V 200mA Fixed TSOT Surface Mount 2.2 V 5.5 V 5 - -40 °C +125 °C 1 Positive ±2.5%
RS Stock No. 159-8051
Mfr. Part No.ADP151AUJZ-1.2-R7
kr 4,086
Each (On a Reel of 3000)
Units
1.2 V 200mA Fixed TSOT Surface Mount 2.2 V 5.5 V 5 - -40 °C +125 °C 1 Positive ±2.5%