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. 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. 742-7764
FabrikantnummerADP151AUJZ-3.3-R7
FabrikantAnalog Devices
€ 0,90
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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. 862-6281
FabrikantnummerHMC1060LP3E
FabrikantAnalog Devices
€ 6,52
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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. 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
€ 0,433
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. 796-9186
FabrikantnummerADP121-AUJZ33R7
FabrikantAnalog Devices
€ 0,691
Each (In a Pack of 10)
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. 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. 160-2683
FabrikantnummerHMC1060LP3E
FabrikantAnalog Devices
€ 5,625
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. 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. 742-7730
FabrikantnummerADP150ACBZ-3.3-R7
FabrikantAnalog Devices
€ 0,87
Each (In a Pack of 5)
Aantal stuks
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. 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. 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. 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 - -
RS-stocknr. 742-7746
FabrikantnummerADP150AUJZ-2.8-R7
FabrikantAnalog Devices
€ 0,862
Each (On a Tape of 5)
Aantal stuks
2.8 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. 159-9544
FabrikantnummerADM7151ARDZ-04
FabrikantAnalog Devices
€ 5,576
Each (In a Tube of 98)
Aantal stuks
1.5 → 5.1 V 800mA Adjustable SOIC Surface Mount 4.5 V 16 V 8 - -40 °C +125 °C 1 Positive ±1%
RS-stocknr. 742-7749
FabrikantnummerADP150AUJZ-1.8-R7
FabrikantAnalog Devices
€ 0,862
Each (In a Pack of 5)
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. 159-8050
FabrikantnummerADP150AUJZ-1.8-R7
FabrikantAnalog Devices
€ 0,516
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. 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. 798-9941
FabrikantnummerADM7151ARDZ-02
FabrikantAnalog Devices
€ 7,16
Each
Aantal stuks
1.5 → 4 V 800mA Adjustable SOIC Surface Mount 4.5 V 16 V 8 - -40 °C +125 °C 1 Positive ±1%
RS-stocknr. 183-2550
FabrikantnummerADP151ACBZ-3.3-R7
FabrikantAnalog Devices
€ 0,92
Each (In a Pack of 10)
Aantal stuks
3.3 V 200mA Fixed WLCSP Surface Mount 2.2 V 5.5 V 4 - -40 °C +125 °C 1 - ±2%