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.

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Description Prix 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
N° de stock RS 160-2683
Référence fabricantHMC1060LP3E
5,80 €
Each (On a Reel of 50)
Unité
1.8 5.2 V 500mA Adjustable QFN Surface Mount 3.35 V 5.6 V 16 - -40 °C +85 °C 4 Positive 2%
N° de stock RS 862-6281
Référence fabricantHMC1060LP3E
6,73 €
Each
Unité
1.8 5.2 V 500mA Adjustable QFN Surface Mount 3.35 V 5.6 V 16 - -40 °C +85 °C 4 Positive 2%
N° de stock RS 155-7558
Référence fabricantLT3050EMSE#PBF
2,176 €
Each (In a Tube of 37)
Unité
0.6 44.5 V 100mA Adjustable MSOP Surface Mount 1.6 V 45 V 12 - -40 °C +125 °C 1 Positive ±2%
N° de stock RS 822-6749
Référence fabricantLT3050EMSE#PBF
3,295 €
Each (In a Pack of 2)
Unité
0.6 44.5 V 100mA Adjustable MSOP Surface Mount 1.6 V 45 V 8 - -40 °C +125 °C 1 Positive ±2%
N° de stock RS 884-2552
Référence fabricantLT1033CT#PBF
6,035 €
Each (In a Pack of 2)
Unité
-1.2 -32 V 3A Adjustable TO-220 Through Hole - - 3 - 0 °C +125 °C 1 Negative ±1%
N° de stock RS 157-8360
Référence fabricantLT1033CT#PBF
4,053 €
Each (In a Tube of 50)
Unité
-1.2 -32 V 3A Adjustable TO-220 Through Hole - - 3 - 0 °C +125 °C 1 Negative ±1%
N° de stock RS 183-2490
Référence fabricantHMC1060LP3ETR
6,555 €
Each (In a Pack of 2)
Unité
5.2 V 500mA Adjustable SMT Surface Mount 3.35 V 5.6 V 16 - -40 °C +85 °C 4 - -
N° de stock RS 796-9189
Référence fabricantADP122AUJZ-3.3-R7
0,862 €
Each (In a Pack of 10)
Unité
3.3 V 300mA Fixed TSOT Surface Mount 2.3 V 5.5 V 5 - -40 °C +125 °C 1 Positive ±1%
N° de stock RS 912-9696
Référence fabricantADP2108AUJZ-3.3-R7
0,787 €
Each (On a Reel of 3000)
Unité
3.3 V 600mA Fixed TSOT Surface Mount 2.3 V 5.5 V 5 - -40 °C +125 °C 1 Positive ±2%
N° de stock RS 798-9938
Référence fabricantADM7150ARDZ-1.8
7,25 €
Each
Unité
1.8 V 800mA Fixed SOIC Surface Mount 4.5 V 16 V 8 - -40 °C +125 °C 1 Positive ±1%
N° de stock RS 155-5383
Référence fabricantLT317AT#PBF
2,846 €
Each (In a Tube of 50)
Unité
5 40 V 1.5A Adjustable TO-220 Through Hole 3 V 40 V 3 - 0 °C +125 °C 1 Positive -
N° de stock RS 183-2280
Référence fabricantADP1715ARMZ-1.2-R7
1,10 €
Each (On a Reel of 1000)
Unité
1.2 V 500mA Fixed MSOP Surface Mount 2.5 V 5.5 V 8 - -40 °C +125 °C 1 - ±3%
N° de stock RS 796-9186
Référence fabricantADP121-AUJZ33R7
0,691 €
Each (In a Pack of 10)
Unité
3.3 V 150mA Fixed TSOT Surface Mount 2.3 V 5.5 V 5 - -40 °C +125 °C 1 Positive ±1%
N° de stock RS 912-8087
Référence fabricantADM7150ARDZ-3.3
5,757 €
Each (In a Tube of 98)
Unité
3.3 V 800mA Fixed SOIC Surface Mount 4.5 V 16 V 8 - -40 °C +125 °C 1 Positive ±1%
N° de stock RS 159-7695
Référence fabricantADP151AUJZ-3.0-R7
0,563 €
Each (On a Reel of 3000)
Unité
3 V 200mA Fixed TSOT Surface Mount 2.2 V 5.5 V 5 - -40 °C +125 °C 1 Positive ±1%
N° de stock RS 183-2550
Référence fabricantADP151ACBZ-3.3-R7
1,007 €
Each (In a Pack of 10)
Unité
3.3 V 200mA Fixed WLCSP Surface Mount 2.2 V 5.5 V 4 - -40 °C +125 °C 1 - ±2%
N° de stock RS 798-9935
Référence fabricantADM7150ARDZ-3.0
7,25 €
Each
Unité
3 V 800mA Fixed SOIC Surface Mount 4.5 V 16 V 8 - -40 °C +125 °C 1 Positive ±1%
N° de stock RS 183-2579
Référence fabricantADP1715ARMZ-1.2-R7
2,262 €
Each (In a Pack of 5)
Unité
1.2 V 500mA Fixed MSOP Surface Mount 2.5 V 5.5 V 8 - -40 °C +125 °C 1 - ±3%
N° de stock RS 920-0167
Référence fabricantLT3015EDD#PBF
3,674 €
Each (In a Tube of 121)
Unité
-1.22 -29.3 V 1.5A Adjustable DFN Surface Mount -1.8 V -30 V 8 - -40 °C +125 °C 1 Negative -
N° de stock RS 159-8049
Référence fabricantADP150AUJZ-2.5-R7
0,485 €
Each (On a Reel of 3000)
Unité
2.5 V 150mA Fixed TSOT Surface Mount 2.2 V 5.5 V 5 - -40 °C +125 °C 1 Positive -2.5 1.5%