Pololu Step-Up Step-Down Voltage Regulators

Item number: PO00004

Category: Step-Up/Step-Down Voltage Regulator

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Description

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.

RegulatorOutput voltagemax output currentInput voltageTypical efficiency
PO2574: S18V20F55 V2 A2.9 V - 32 V80% - 90%
PO2575: S18V20F66 V2 A2.9 V - 32 V80% - 90%
PO2576: S18V20F99 V2 A2.9 V - 32 V80% - 90%
PO2577: S18V20F1212 V2 A2.9 V - 32 V80% - 90%
PO2572: S18V20ALV4 V ? 12 V2 A2.9 V - 32 V80% - 90%
PO2573: S18V20AHV9 V ? 30 V2 A2.9 V - 32 V80% - 90%
PO2118: S7V8A2.5 V ? 8 V1 A2.7 V - 11.8 V80% - 95%
PO2122: S7V8F33.3 V1 A2.7 V - 11.8 V80% - 95%
PO2123: S7V8F55 V1 A2.7 V - 11.8 V80% - 95%
PO2119: S7V7F55 V1 A2.7 V - 11.8 V80% - 95%
PO2121: S10V4F55 V0.4 A2.5 V - 18 V70% - 80%
PO2095: S10V3F99 V0.3 A2.5 V - 18 V70% - 80%
PO2096: S10V2F1212 V0.2 A2.5 V - 18 V70% - 80%
PO2120: S8V3A2 V ? 12 V0.3 A1.5 V - 12 V55% - 65%

The S18V20x regulator family consists of the four fixed-output versions mentioned above along with two adjustable-output versions: the S18V20ALV offers an output range of 4 V to 12 V and the S18V20AHV offers an output range of 9 V to 30 V. The different versions of the board all look very similar, so the bottom silkscreen includes a blank space where you can add your own distinguishing marks or labels.

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