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. 920-0167
FabrikantnummerLT3015EDD#PBF
FabrikantAnalog Devices
€ 3,374
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-1.22 → -29.3 V 1.5A Adjustable DFN Surface Mount -1.8 V -30 V 8 - -40 °C +125 °C 1 Negative -
RS-stocknr. 912-9624
FabrikantnummerADP151AUJZ-3.3-R7
FabrikantAnalog Devices
€ 0,484
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Aantal stuks
3.3 V 200mA Fixed TSOT Surface Mount 2.2 V 5.5 V 5 - -40 °C +125 °C 1 Positive ±2.5%
RS-stocknr. 823-0164
FabrikantnummerLT3015EDD#PBF
FabrikantAnalog Devices
€ 5,725
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Aantal stuks
-1.22 → -29.3 V 1.5A Adjustable DFN Surface Mount -1.8 V -30 V 8 - -40 °C +125 °C 1 Negative -
RS-stocknr. 742-7764
FabrikantnummerADP151AUJZ-3.3-R7
FabrikantAnalog Devices
€ 0,90
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3.3 V 200mA Fixed TSOT Surface Mount 2.2 V 5.5 V 5 - -40 °C +125 °C 1 Positive ±2.5%
RS-stocknr. 862-6281
FabrikantnummerHMC1060LP3E
FabrikantAnalog Devices
€ 6,73
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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. 822-6749
FabrikantnummerLT3050EMSE#PBF
FabrikantAnalog Devices
€ 3,295
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Aantal stuks
0.6 → 44.5 V 100mA Adjustable MSOP Surface Mount 1.6 V 45 V 8 - -40 °C +125 °C 1 Positive ±2%
RS-stocknr. 155-7558
FabrikantnummerLT3050EMSE#PBF
FabrikantAnalog Devices
€ 2,176
Each (In a Tube of 37)
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0.6 → 44.5 V 100mA Adjustable MSOP Surface Mount 1.6 V 45 V 12 - -40 °C +125 °C 1 Positive ±2%
RS-stocknr. 159-9375
FabrikantnummerADP121-AUJZ33R7
FabrikantAnalog Devices
€ 0,452
Each (On a Reel of 3000)
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. 742-7691
FabrikantnummerADP150AUJZ-3.3-R7
FabrikantAnalog Devices
€ 0,892
Each (In a Pack of 5)
Aantal stuks
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. 912-9589
FabrikantnummerADP150AUJZ-3.3-R7
FabrikantAnalog Devices
€ 0,485
Each (On a Reel of 3000)
Aantal stuks
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. 160-2683
FabrikantnummerHMC1060LP3E
FabrikantAnalog Devices
€ 5,80
Each (On a Reel of 50)
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. 796-9186
FabrikantnummerADP121-AUJZ33R7
FabrikantAnalog Devices
€ 0,691
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3.3 V 150mA Fixed TSOT Surface Mount 2.3 V 5.5 V 5 - -40 °C +125 °C 1 Positive ±1%
RS-stocknr. 798-9944
FabrikantnummerADM7150ARDZ-3.3
FabrikantAnalog Devices
€ 7,25
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Aantal stuks
3.3 V 800mA Fixed SOIC Surface Mount 4.5 V 16 V 8 - -40 °C +125 °C 1 Positive ±1%
RS-stocknr. 159-8050
FabrikantnummerADP150AUJZ-1.8-R7
FabrikantAnalog Devices
€ 0,485
Each (On a Reel of 3000)
Aantal stuks
1.8 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. 798-9931
FabrikantnummerADM7150ARDZ-2.8
FabrikantAnalog Devices
€ 7,12
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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. 159-8051
FabrikantnummerADP151AUJZ-1.2-R7
FabrikantAnalog Devices
€ 0,549
Each (On a Reel of 3000)
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. 798-9938
FabrikantnummerADM7150ARDZ-1.8
FabrikantAnalog Devices
€ 7,25
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Aantal stuks
1.8 V 800mA Fixed SOIC Surface Mount 4.5 V 16 V 8 - -40 °C +125 °C 1 Positive ±1%
RS-stocknr. 183-2279
FabrikantnummerADP151ACBZ-3.3-R7
FabrikantAnalog Devices
€ 0,52
Each (On a Reel of 3000)
Aantal stuks
3.3 V 200mA Fixed WLCSP Surface Mount 2.2 V 5.5 V 4 - -40 °C +125 °C 1 - ±2%
RS-stocknr. 862-6461
FabrikantnummerHMC976LP3E
FabrikantAnalog Devices
€ 8,80
Each
Aantal stuks
5 V 400mA Adjustable QFN Surface Mount 3.3 V 5.5 V 16 - -40 °C +85 °C 1 Positive 2%
RS-stocknr. 183-2332
FabrikantnummerHMC1060LP3ETR
FabrikantAnalog Devices
€ 4,875
Each (On a Reel of 500)
Aantal stuks
5.2 V 500mA Adjustable SMT Surface Mount 3.35 V 5.6 V 16 - -40 °C +85 °C 4 - -