Voltage Regulators

Voltage Regulators

Voltage Regulators

Voltage Regulators

Voltage regulators are designed to automatically maintain a constant voltage. A voltage regulator may use a simple feed-forward design or it may include negative feedback. These come in many shapes and sizes such as SOT23, TO-220 etc.

The TO-220 packaged devices are particularly handy for breadboards.

Step-Down Voltage Regulator

These Step-Down (buck) voltage regulators generate lower output voltages from input voltages as high. They are switching regulators (also called switched-mode power supplies (SMPS) or DC-to-DC converters), which makes them much more efficient than linear voltage regulators, especially when the difference between the input and output voltage is large. The maximum achievable output current of these regulators varies with the input voltage but also depends on other factors, including the ambient temperature, air flow, and heat sinking. The graph below shows maximum output currents that these regulators can deliver continuously at room temperature in still air and without additional heat sinking.

The regulators feature short-circuit/over-current protection, and thermal shutdown helps prevent damage from overheating.

Step-up Voltage Regulator

Step-up regulators, also known as boost regulators, are used to step up an input voltage to the desired higher output level. Proto-Pic have Step-up Voltage Regulators. These step-up (boost) voltage regulators, enable you to generate output voltages higher than your input voltage, from as low. With a typical efficiency between 80% to 90%, the available output current is a function of the input voltage and output voltage, the input current can typically be as high. This range of regulators, includes the choice of 5,9 and 12V output voltages, all at 1.4mA input current.

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  • Voltage regulator D24V6x Voltage regulator D24V6x with headers

    Pololu Step-Down Voltage Regulators Fixed Output - D24V6Fx Range

    £7.00
    Pololu Step-Down Voltage Regulators Fixed Output - D24V6Fx Range These Pololu Step-Down (buck) voltage regulators generate lower output voltages from input voltages as high as 42 V. They are switching regulators (also called switched-mode power supplies...
    £7.00
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  • Pololu step down  voltage regulator Pololu Step-Down Voltage Regulator Fixed Output - D24V5Fx Range

    Pololu Step-Down Voltage Regulator Fixed Output - D24V5Fx Range

    £4.96 - £6.00
    Pololu Step-Down Voltage Regulator Fixed Output - D24V5Fx Range The D24V5x family of 500 mA synchronous buck (step-down) voltage regulators generates lower output voltages from input voltages as high as 36 V. They are switching regulators (also called...
    £4.96 - £6.00
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  • Pololu step-down voltage regulator Pololu step down volatge regulator with headers

    Pololu Step-Down Voltage Regulator Fixed Output - D36V6Fx Range

    £17.00
    Pololu Step-Down Voltage Regulator Fixed Output - D36V6Fx Range The D36V6Fx family of 600 mA buck (step-down) voltage regulators generates lower output voltages from input voltages as high as 50 V. They are switching regulators (also called switched-mode...
    £17.00
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  • Step-up Voltage Regulator Fixed Output – U3V12Fx Range Step-up Voltage Regulator Fixed Output – U3V12Fx Range

    Step-up Voltage Regulator Fixed Output – U3V12Fx Range

    £3.95 - £7.80
    The U3V12Fx Range of step-up (boost) voltage regulators, enable you to generate output voltages higher than your input voltage, from as low as 2.5V. With a typical efficiency between 80% to 90%, the available output current is a function of the input...
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  • Photon Weather Shield - SparkFun DEV-13674 main Photon Weather Shield - SparkFun DEV-13674 main 1

    Pololu Step-Down Voltage Regulator Fixed Output - D36V28Fx Range

    £16.00 - £17.00
    Pololu Step-Down Voltage Regulator Fixed Output - D36V28Fx Range The D36V28Fx range of buck (step-down) voltage regulators generates lower output voltages from input voltages as high as 50 V. They are switching regulators (also called switched-mode power...
    £16.00 - £17.00
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  • Pololu fixed step-up/step-down voltage regulator S18V20Fx, assembled with included terminal blocks Pololu Step-Up/Step-Down Voltage Regulator S18V20FX 10p size comparison

    Pololu Step-Up/Step-Down Voltage Regulators Fixed Output - S18V20FX Range

    £12.96 - £30.00
    Pololu Step-Up/Step-Down Voltage Regulators Fixed Output - S18V20FX Range This family of step-up/step-down regulators take an input voltage from 3 V to 30 V and increase or decrease it as necessary to produce the desired output voltage. They allow a...
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  • PPPOL2561_3.3V_Step-Up_Voltag_Regulator_U1V11F3_main PPPOL2561_3.3V_Step-Up_Voltag_Regulator_U1V11F3_Rear_View2

    Step-Up Voltage Regulator 3.3V - U1V11F3

    Pololu

    £14.50
    Step-Up Voltage Regulator 3.3V - U1V11F3 - Pololu 2561 This 3.3 V boost (step-up) voltage regulator generates higher output voltages from input voltages as low as 0.5 V, and it also automatically switches to a linear down-regulation mode when the input...
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  • Pololu step-down voltage regulators D24V10Fx in a breadboard Typical dropout voltage of Pololu 12V step-down voltage regulator D24V10F12

    12V, 1A Step-Down Voltage Regulator D24V10F12

    Proto-PIC

    £9.50
    Schematic diagram for the Pololu D24V10Fx family of 1 A step-down voltage regulators The D24V10Fx family of step-down voltage regulators features the Intersil ISL85410 1A synchronous buck regulator and generates lower output voltages from input...
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  • Step-Down Voltage Regulator 3.3V, 300mA - D24V3F3 Included Hardware Step-Down Voltage Regulator 3.3V, 300mA - D24V3F3 front

    Step-Down Voltage Regulator 3.3V, 300mA - D24V3F3

    Pololu

    £7.80
    Step-Down Voltage Regulator 3.3V, 300mA - Pololu 2097 This compact (0.4″ × 0.5″) D24V3F3 switching step-down (or buck) voltage regulator takes an input voltage between 4.3 V and 42 V and efficiently reduces it to 3.3 V while...
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  • Step-Down Voltage Regulator 5V, 1A - Pololu 2831 on breadboard Step-Down Voltage Regulator 5V, 1A - Pololu 2831 contents

    Step-Down Voltage Regulator 5V, 1A - D24V10F5

    Pololu

    £6.50
    Step-Down Voltage Regulator 5V, 1A - Pololu 2831 The D24V10Fx family of step-down voltage regulators features the Intersil ISL85410 1A synchronous buck regulator and generates lower output voltages from input voltages as high as 36 V. They are switching...
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  • PPPOL2098_1 PPPOL2098_included_hardware

    5V, 300mA Step-Down Voltage Regulator D24V3F5

    Pololu

    £8.50
    5V, 300mA Step-Down Voltage Regulator D24V3F5 - Pololu 2098 The compact D24V3F5 switching step-down (or buck) voltage regulator takes an input voltage between 7 V and 42 V and efficiently reduces it to 5 V while allowing for a maximum output current...
    £8.50
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  • Step-Down Voltage Regulator 6V, 2.5A - Pololu 2852 main Step-Down Voltage Regulator 6V, 2.5A - Pololu 2852 contents

    Step-Down Voltage Regulator 6V, 2.5A - D24V25F6

    Pololu

    £24.00
    Step-Down Voltage Regulator 6V, 2.5A - Pololu 2852 The D24V25Fx family of step-down voltage regulators generates lower output voltages from input voltages as high as 38 V. They are switching regulators (also called switched-mode power supplies (SMPS) or...
    £24.00
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