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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? Set your multimeter to the voltage setting Check the datasheet to determine which pins are the ground, input and output. 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. 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.

Showing 1–24 of 61 results

  • 1.5A, ADJ OUTPUT, +VE V REG, LM317D2TG

    RS Stock No.
    0464097
    Brand
    ON Semiconductor
    Mfr. Prt No.
    LM317D2TG
    IDR
    1,080,367.00
    Price per pack of 10

  • 1.5A, ADJ OUTPUT, -VE V REG, LM337TG

    RS Stock No.
    0464104
    Brand
    ON Semiconductor
    Mfr. Prt No.
    LM337TG
    IDR
    981,770.40
    Price per pack of 10

  • 1A, 5V, POSITIVE V REG, MC7805ACTG

    RS Stock No.
    0463054
    Brand
    ON Semiconductor
    Mfr. Prt No.
    MC7805ACTG
    IDR
    3,134,113.20
    Price per pack of 20

  • 500MA, ADJ OUTPUT, +VE V REG, LM317MDTG

    RS Stock No.
    0464108
    Brand
    ON Semiconductor
    Mfr. Prt No.
    LM317MDTG
    IDR
    823,386.50
    Price per pack of 10

  • ADJ LINEAR REG, 1.2V-440V, 10MA, TO-92

    RS Stock No.
    8293266
    Brand
    Microchip
    Mfr. Prt No.
    LR8N3-G
    IDR
    951,352.30
    Price per pack of 10

  • IC, FAIRCHILD, KA7812AETU

    RS Stock No.
    8067165
    Brand
    ON Semiconductor
    Mfr. Prt No.
    KA7812AETU
    IDR
    26,117,610.00
    Price per pack of 50

  • L78M12CDT-TR,VOLTAGE REGULATOR 12V 0.5A

    RS Stock No.
    7958537
    Brand
    STMicroelectronics
    Mfr. Prt No.
    L78M12CDT-TR
    IDR
    4,279,512.00
    Price per pack of 25

  • LDO VOLTAGE REGULATOR,3.0V,150MA,SOT23-5

    RS Stock No.
    7484783
    Brand
    ON Semiconductor
    Mfr. Prt No.
    NCP4620DSN30T1G
    IDR
    369,212.80
    Price per pack of 5

  • LINEAR VOLTAGE REGULATOR,L7805CV 5V 1.5A

    RS Stock No.
    9181971
    Brand
    STMicroelectronics
    Mfr. Prt No.
    L7805CV
    IDR
    16,556,886.50
    Price per pack of 50

  • LINEAR VOLTAGE REGULATOR,L78L05ACZ 5V

    RS Stock No.
    1891295
    Brand
    STMicroelectronics
    Mfr. Prt No.
    L78L05ACZ
    IDR
    6,398.29

  • LM317 POSITIVE VOLTAGE REGULATOR,1.5A

    RS Stock No.
    1138596
    Brand
    ON Semiconductor
    Mfr. Prt No.
    LM317TG
    IDR
    24,659,639.00
    Price per pack of 50

  • MC7805ABD2TR4G, ANA 1A 5V VREG

    RS Stock No.
    8056477
    Brand
    ON Semiconductor
    Mfr. Prt No.
    MC7805ABD2TR4G
    IDR
    1,197,843.80
    Price per pack of 10

  • MC7805BDTRKG, ANA 1A 5V VREG

    RS Stock No.
    8056470
    Brand
    ON Semiconductor
    Mfr. Prt No.
    MC7805BDTRKG
    IDR
    4,536,492.50
    Price per pack of 25

  • MC7809CD2TG, ANA 1A 9V VREG

    RS Stock No.
    8056496
    Brand
    ON Semiconductor
    Mfr. Prt No.
    MC7809CD2TG
    IDR
    3,826,387.20
    Price per pack of 20

  • MC7815CD2TR4G, ANA 1A 15V VREG

    RS Stock No.
    8056519
    Brand
    ON Semiconductor
    Mfr. Prt No.
    MC7815CD2TR4G
    IDR
    3,778,137.80
    Price per pack of 20

  • MC78L05ACPREG, ANA 100MA 5V VREG

    RS Stock No.
    8056540
    Brand
    ON Semiconductor
    Mfr. Prt No.
    MC78L05ACPREG
    IDR
    3,254,212.25
    Price per pack of 25

  • MC7915CD2TR4G, ANA 1A 15V NEGATIVE VREG

    RS Stock No.
    8056622
    Brand
    ON Semiconductor
    Mfr. Prt No.
    MC7915CD2TR4G
    IDR
    3,941,766.20
    Price per pack of 20

  • NCV78M05BDTRKG, ANA 500MA 5V VREG

    RS Stock No.
    8084116
    Brand
    ON Semiconductor
    Mfr. Prt No.
    NCV78M05BDTRKG
    IDR
    5,029,475.50
    Price per pack of 25

  • POSITIVE ADJUSTABLE REGULATOR 1.5A TO220

    RS Stock No.
    7799628
    Brand
    Analog Devices
    Mfr. Prt No.
    LT317AT#PBF
    IDR
    310,684.18
    Price per pack of 2

  • STANDARD REGULATOR 1.2V TO 37V 0.2A

    RS Stock No.
    7140798
    Brand
    STMicroelectronics
    Mfr. Prt No.
    LM317MDT-TR
    IDR
    222,891.25
    Price per pack of 5

  • STANDARD REGULATOR 1.2V TO 37V 1.5A

    RS Stock No.
    7140782
    Brand
    STMicroelectronics
    Mfr. Prt No.
    LM317D2T-TR
    IDR
    350,332.60
    Price per pack of 5

  • STANDARD REGULATOR 12V 2A TO-220

    RS Stock No.
    7147783
    Brand
    STMicroelectronics
    Mfr. Prt No.
    L78S12CV
    IDR
    1,094,002.70
    Price per pack of 10

  • STANDARD REGULATOR 5V 0.1A

    RS Stock No.
    7140675
    Brand
    STMicroelectronics
    Mfr. Prt No.
    L78L05ABUTR
    IDR
    648,220.20
    Price per pack of 10

  • STANDARD REGULATOR 5V 0.1A

    RS Stock No.
    7140672
    Brand
    STMicroelectronics
    Mfr. Prt No.
    L78L05ABD13TR
    IDR
    774,088.20
    Price per pack of 20