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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Omschrijving Prijs 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-stocknr. 862-6281
FabrikantnummerHMC1060LP3E
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6,52 €
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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-stocknr. 160-2683
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FabrikantAnalog Devices
5,625 €
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Aantal stuks
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-stocknr. 798-9938
FabrikantnummerADM7150ARDZ-1.8
FabrikantAnalog Devices
7,02 €
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1.8 V 800mA Fixed SOIC Surface Mount 4.5 V 16 V 8 - -40 °C +125 °C 1 Positive ±1%
RS-stocknr. 912-8078
FabrikantnummerADP123AUJZ-R7
FabrikantAnalog Devices
0,498 €
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Aantal stuks
0.8 → 5 V 300mA Adjustable TSOT Surface Mount 2.3 V 5.5 V 5 - -40 °C +125 °C 1 Positive ±1%
RS-stocknr. 183-2332
FabrikantnummerHMC1060LP3ETR
FabrikantAnalog Devices
4,875 €
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Aantal stuks
5.2 V 500mA Adjustable SMT Surface Mount 3.35 V 5.6 V 16 - -40 °C +85 °C 4 - -
RS-stocknr. 912-9589
FabrikantnummerADP150AUJZ-3.3-R7
FabrikantAnalog Devices
0,433 €
Each (On a Reel of 3000)
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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-stocknr. 183-2490
FabrikantnummerHMC1060LP3ETR
FabrikantAnalog Devices
7,35 €
Each (In a Pack of 2)
Aantal stuks
5.2 V 500mA Adjustable SMT Surface Mount 3.35 V 5.6 V 16 - -40 °C +85 °C 4 - -
RS-stocknr. 796-9186
FabrikantnummerADP121-AUJZ33R7
FabrikantAnalog Devices
0,691 €
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Aantal stuks
3.3 V 150mA Fixed TSOT Surface Mount 2.3 V 5.5 V 5 - -40 °C +125 °C 1 Positive ±1%
RS-stocknr. 798-9947
FabrikantnummerADM7150ARDZ-5.0
FabrikantAnalog Devices
7,25 €
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Aantal stuks
5 V 800mA Fixed SOIC Surface Mount 4.5 V 16 V 8 - -40 °C +125 °C 1 Positive ±1%
RS-stocknr. 159-9540
FabrikantnummerADM7150ARDZ-2.8
FabrikantAnalog Devices
6,361 €
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Aantal stuks
2.8 V 800mA Fixed SOIC Surface Mount 4.5 V 16 V 8 - -40 °C +125 °C 1 Positive ±1%
RS-stocknr. 912-8081
FabrikantnummerADM7150ARDZ-5.0
FabrikantAnalog Devices
5,576 €
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Aantal stuks
5 V 800mA Fixed SOIC Surface Mount 4.5 V 16 V 8 - -40 °C +125 °C 1 Positive ±1%
RS-stocknr. 159-7695
FabrikantnummerADP151AUJZ-3.0-R7
FabrikantAnalog Devices
0,563 €
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Aantal stuks
3 V 200mA Fixed TSOT Surface Mount 2.2 V 5.5 V 5 - -40 °C +125 °C 1 Positive ±1%
RS-stocknr. 145-7242
FabrikantnummerHMC976LP3E
FabrikantAnalog Devices
7,35 €
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5 V 400mA Adjustable QFN Surface Mount 3.3 V 5.5 V 16 - -40 °C +85 °C 1 Positive 2%
RS-stocknr. 742-7755
FabrikantnummerADP150AUJZ-3.0-R7
FabrikantAnalog Devices
0,484 €
Each (In a Pack of 5)
Aantal stuks
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-stocknr. 759-1780
FabrikantnummerADP151AUJZ-3.0-R7
FabrikantAnalog Devices
0,862 €
Each (In a Pack of 5)
Aantal stuks
3 V 200mA Fixed TSOT Surface Mount 2.2 V 5.5 V 5 - -40 °C +125 °C 1 Positive ±1%
RS-stocknr. 183-2579
FabrikantnummerADP1715ARMZ-1.2-R7
FabrikantAnalog Devices
2,18 €
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Aantal stuks
1.2 V 500mA Fixed MSOP Surface Mount 2.5 V 5.5 V 8 - -40 °C +125 °C 1 - ±3%
RS-stocknr. 159-8045
FabrikantnummerADP150ACBZ-3.3-R7
FabrikantAnalog Devices
0,516 €
Each (On a Reel of 3000)
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3.3 V 150mA Fixed WLCSP Surface Mount 2.2 V 5.5 V 4 - -40 °C +125 °C 1 Positive -2.5 → 1.5%
RS-stocknr. 742-7758
FabrikantnummerADP151AUJZ-1.2-R7
FabrikantAnalog Devices
0,826 €
Each (In a Pack of 5)
Aantal stuks
1.2 V 200mA Fixed TSOT Surface Mount 2.2 V 5.5 V 5 - -40 °C +125 °C 1 Positive ±2.5%
RS-stocknr. 798-9935
FabrikantnummerADM7150ARDZ-3.0
FabrikantAnalog Devices
6,82 €
Each
Aantal stuks
3 V 800mA Fixed SOIC Surface Mount 4.5 V 16 V 8 - -40 °C +125 °C 1 Positive ±1%
RS-stocknr. 796-9183
FabrikantnummerADP123AUJZ-R7
FabrikantAnalog Devices
0,833 €
Each (In a Pack of 10)
Aantal stuks
0.8 → 5 V 300mA Adjustable TSOT Surface Mount 2.3 V 5.5 V 5 - -40 °C +125 °C 1 Positive ±1%