This synchronous switching step-up/step-down regulator efficiently produces 5 V from input voltages between 2.8 V and 22 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 board measures 0.9″ × 0.9″, has a typical efficiency of 85% to 95%, and can supply typical continuous output currents between 2 A and 4 A depending on the input voltage. The regulator also features reverse voltage protection and an optional enable input that can be used to put the regulator in a low-power state with a current draw of less than 10 µA per volt on VIN.
The S13VxF5 family of efficient switching regulators (also called switched-mode power supplies (SMPS) or DC-to-DC converters) use a buck-boost topology to convert both higher and lower input voltages to a regulated 5 V output. They take input voltages from 2.8 V to 22 V and increase or decrease them as necessary, offering a typical efficiency of over 85% and typical continuous output currents between 1 A and 3 A . The flexibility in input voltage offered by this family of regulators is especially well-suited for battery-powered applications in which the battery voltage begins above 5 V and drops below as the battery discharges. Without the typical restriction on the battery voltage staying above the required voltage throughout its life, new battery packs and form factors can be considered.
This product is the larger (0.9″ × 0.9″) S13V30F5, which can output up to around 3 A continuous and has reverse-voltage protection up to 20 V. The other three members of the S13VxF5 family are extra compact (0.35″ × 0.475″) and have lower maximum output currents and no reverse-voltage protection:
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S13V10F5: 1 A continuous output current
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S13V15F5: 1.5 A continuous output current
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S13V20F5: 2 A continuous output current
Minimum operating voltage: 2.8 V
Maximum operating voltage: 22 V
Continuous output current: 3 A3
Output voltage: 5 V
Reverse voltage protection?: Y4
Maximum quiescent current: 100 mA5
Output type: fixed 5V