Step-Up/Step-Down Voltage Regulators

Buck-boost and SEPIC converters work with input voltages that are higher than, equal to, or lower than the regulated output voltage, making them especially well-suited for battery-powered applications in which the battery voltage begins above the desired output voltage and drops below the target as the battery discharges. For applications where the input voltage will always be well above or below the output, consider step-down or step-up regulators. The following table shows some of the key stats for the regulators in this category:

Regulator Output voltage Typical max output current Input voltage range Typical efficiency Size Price
#2574: S18V20F5 5 V 2 A 2.9 V – 32 V 80% – 90% 0.825″ × 1.7″ $14.95
#2575: S18V20F6 6 V 2 A 2.9 V – 32 V 80% – 90% 0.825″ × 1.7″ $14.95
#2576: S18V20F9 9 V 2 A 2.9 V – 32 V 80% – 90% 0.825″ × 1.7″ $14.95
#2577: S18V20F12 12 V 2 A 2.9 V – 32 V 80% – 90% 0.825″ × 1.7″ $14.95
#2572: S18V20ALV 4 V – 12 V 2 A 2.9 V – 32 V 80% – 90% 0.825″ × 1.7″ $15.95
#2573: S18V20AHV 9 V – 30 V 2 A 2.9 V – 32 V 80% – 90% 0.825″ × 1.7″ $17.95
#2118: S7V8A 2.5 V – 8 V 1 A 2.7 V – 11.8 V 80% – 95% 0.45″ × 0.65″ $5.95
#2122: S7V8F3 3.3 V 1 A 2.7 V – 11.8 V 80% – 95% 0.45″ × 0.65″ $5.95
#2123: S7V8F5 5 V 1 A 2.7 V – 11.8 V 80% – 95% 0.45″ × 0.65″ $5.95
#2119: S7V7F5 5 V 1 A 2.7 V – 11.8 V 80% – 95% 0.35″ × 0.475″ $4.95
#2121: S10V4F5 5 V 0.4 A 2.5 V – 18 V 70% – 80% 0.4″ × 0.575″ $4.49
#2095: S10V3F9 9 V 0.3 A 2.5 V – 18 V 70% – 80% 0.4″ × 0.575″ $4.49
#2096: S10V2F12 12 V 0.2 A 2.5 V – 18 V 70% – 80% 0.4″ × 0.575″ $4.49
#2120: S8V3A 2 V – 12 V 0.3 A 1.5 V – 12 V 55% – 65% 0.4″ × 0.7″ $9.95


Products in category “Step-Up/Step-Down Voltage Regulators”

Pololu item #: 2574
Price: $14.95
Quantity:

This powerful step-up/step-down regulator efficiently produces a fixed 5 V output from input voltages between 3 V and 30 V while allowing a typical output current of up to 2 A when the input voltage is close to the output voltage and offering typical efficiencies of 80% to 90%. Its ability to convert both higher and lower input voltages makes it useful for applications where the power supply voltage can vary greatly, as with batteries that start above but discharge below the regulated voltage.

Pololu item #: 2575
Price: $14.95
Quantity:

This powerful step-up/step-down regulator efficiently produces a fixed 6 V output from input voltages between 3 V and 30 V while allowing a typical output current of up to 2 A when the input voltage is close to the output voltage and offering typical efficiencies of 80% to 90%. Its ability to convert both higher and lower input voltages makes it useful for applications where the power supply voltage can vary greatly, as with batteries that start above but discharge below the regulated voltage.

Pololu item #: 2576
Price: $14.95
Quantity:

This powerful step-up/step-down regulator efficiently produces a fixed 9 V output from input voltages between 3 V and 30 V while allowing a typical output current of up to 2 A when the input voltage is close to the output voltage and offering typical efficiencies of 80% to 90%. Its ability to convert both higher and lower input voltages makes it useful for applications where the power supply voltage can vary greatly, as with batteries that start above but discharge below the regulated voltage.

Pololu item #: 2577
Price: $14.95
Quantity:

This powerful step-up/step-down regulator efficiently produces a fixed 12 V output from input voltages between 3 V and 30 V while allowing a typical output current of up to 2 A when the input voltage is close to the output voltage and offering typical efficiencies of 80% to 90%. Its ability to convert both higher and lower input voltages makes it useful for applications where the power supply voltage can vary greatly, as with batteries that start above but discharge below the regulated voltage.

Pololu item #: 2572
Price: $15.95
Quantity:

This powerful step-up/step-down regulator efficiently produces an adjustable 4 V to 12 V output from input voltages between 3 V and 30 V while allowing a typical output current of up to 2 A when the input voltage is close to the output voltage and offering typical efficiencies of 80% to 90%. Its ability to convert both higher and lower input voltages makes it useful for applications where the power supply voltage can vary greatly, as with batteries that start above but discharge below the regulated voltage.

Pololu item #: 2573
Price: $17.95
Quantity:

This powerful step-up/step-down regulator efficiently produces an adjustable 9 V to 30 V output from input voltages between 3 V and 30 V while allowing a typical output current of up to 2 A when the input voltage is close to the output voltage and offering typical efficiencies of 80% to 90%. Its ability to convert both higher and lower input voltages makes it useful for applications where the power supply voltage can vary greatly, as with batteries that start above but discharge below the regulated voltage.

Pololu item #: 2118
Price: $5.95
Quantity:

The S7V8A switching step-up/step-down regulator efficiently produces an adjustable output between 2.5 V to 8 V from input voltages between 2.7 V and 11.8 V. Its ability to convert both higher and lower input voltages makes it useful for applications where the power supply voltage can vary greatly, as with batteries that start above but discharge below the regulated voltage. The compact (0.45″ × 0.65″) module has a typical efficiency of over 90% and can deliver 500 mA to 1 A across most combinations of input and output voltages.

Pololu item #: 2122
Price: $5.95
Quantity:

The S7V8F3 switching step-up/step-down regulator efficiently produces a fixed 3.3 V output from input voltages between 2.7 V and 11.8 V. Its ability to convert both higher and lower input voltages makes it useful for applications where the power supply voltage can vary greatly, as with batteries that start above but discharge below the regulated voltage. The compact (0.45″ × 0.65″) module has a typical efficiency of over 90% and can deliver 500 mA to 1 A across most of the input voltage range.

Pololu item #: 2123
Price: $5.95
Quantity:

The S7V8F5 switching step-up/step-down regulator efficiently produces a fixed 5 V output from input voltages between 2.7 V and 11.8 V. Its ability to convert both higher and lower input voltages makes it useful for applications where the power supply voltage can vary greatly, as with batteries that start above but discharge below the regulated voltage. The compact (0.45″ × 0.65″) module has a typical efficiency of over 90% and can deliver 500 mA to 1 A across most of the input voltage range.

Pololu item #: 2119
Price: $4.95
Quantity:

The S7V7F5 switching step-up/step-down regulator efficiently produces 5 V from input voltages between 2.7 V and 11.8 V. Its ability to convert both higher and lower input voltages makes it useful for applications where the power supply voltage can vary greatly, as with batteries that start above but discharge below 5 V. The very compact (0.35″ × 0.475″) module has a typical efficiency of over 90% and can supply up to 1 A when stepping down and about 500 mA when stepping up.

Pololu item #: 2121
Price: $4.49
Quantity:

This switching regulator uses the SEPIC topology to produce 5 V from input voltages between 2.5 V and 18 V. The wide input range coupled with its ability to convert both higher and lower input voltages makes it useful for applications where the power supply voltage can vary greatly, as with batteries that start above but discharge below 5 V. The compact (0.4″ × 0.575″) module can supply over 400 mA in typical applications.

Pololu item #: 2095
Price: $4.49
Quantity:

This switching regulator uses the SEPIC topology to produce 9 V from input voltages between 2.5 V and 18 V. The wide input range coupled with its ability to convert both higher and lower input voltages makes it useful for applications where the power supply voltage can vary greatly, as with batteries that start above but discharge below 9 V. The compact (0.4″ × 0.575″) module can supply over 300 mA in typical applications.

Pololu item #: 2096
Price: $4.49
Quantity:

This switching regulator uses the SEPIC topology to produce 12 V from input voltages between 2.5 V and 18 V. The wide input range coupled with its ability to convert both higher and lower input voltages makes it useful for applications where the power supply voltage can vary greatly, as with batteries that start above but discharge below 12 V. The compact (0.4″ × 0.575″) module can supply over 200 mA in typical applications.

Pololu item #: 2120
Price: $9.95
Quantity:

This switching regulator uses the SEPIC topology to provide a regulated output voltage that can be higher than, the same as, or lower than the input voltage, making it great for applications with widely-varying power supplies and for battery-operated applications where the battery transitions from being above the output to below the output as it discharges. The small (0.4″×0.7″) module can support input voltages from 1.5 V to 12 V, has an adjustable output from 2 V to 12 V, and can supply over 300 mA in typical applications.

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