S13V10F5 5V Step-Up/Step-Down Regulator (2.8–22V In, up to 1A)
Battery voltage going up and down? The Pololu S13V10F5 is a compact buck-boost (step-up/step-down) DC-DC regulator that keeps your output at a stable 5V even when your supply drops below 5V or rises above it. Great for portable builds, robotics, and “one power rail” projects where efficiency matters.
Only 3 pins: VIN, GND, VOUT—easy to drop into breadboards/perfboards (0.1″ spacing).
Best for
- 5V microcontrollers & sensors powered from batteries (1S Li-ion, AA packs, 2S/3S with sag)
- Projects that need stable 5V across discharge curves
- Compact builds where linear regulators would get too hot
- Quick prototyping with breadboards and perfboards
How to identify: Compared to the similar S13V15F5 / S13V20F5, this version can be recognized by its inductor style and the resistor marking “81C” on the bottom side.
Why/Benefits
- Buck-boost convenience: stable 5V whether your input is higher or lower than 5V.
- Efficient: typically ~85–95% depending on VIN and load (better battery life, less heat).
- Soft-start: helps limit inrush current and ramps output smoothly.
- Protection features: input under-voltage lockout, output over-voltage protection, over-current protection, and over-temperature shutoff.
- Clean wiring: just three connections—VIN/GND/VOUT.
Technical specifications
| Model | S13V10F5 |
|---|---|
| Topology | Buck-boost (step-up/step-down) switching regulator (DC-DC) |
| Input voltage | 2.8V to 22V |
| Output voltage | 5V (±3% accuracy) |
| Typical max continuous output current | Up to 1A (VIN/thermal dependent; see Pololu current graph) |
| Typical efficiency | ~85% to 95% (VIN/load dependent) |
| No-load quiescent current | Typical 10 mA to 20 mA |
| Switching frequency | ~500 kHz fixed |
| Protection | UVLO, output OVP, over-current, over-temperature; soft-start |
| Output current limit | 1A |
| Enable input | No |
| Reverse-voltage protection | No |
| Size | 0.35″ × 0.475″ × 0.17″ (8.9 × 12.1 × 4.2 mm) |
| Connections | VIN, GND, VOUT (0.1″ / 2.54mm spacing) |
Pinout & power notes
- VIN: connect your source (2.8–22V).
- VOUT: regulated 5V output to your load.
- GND: common ground to your load/MCU.
- Thermals: continuous current depends on input voltage and airflow—give it breathing room for higher loads.
FAQ
-
Can this power a 5V Arduino from a single Li-ion cell?
Yes—this is a classic use case. It boosts when the cell is below 5V and bucks when the input is above 5V (within current/thermal limits).
-
Why is “up to 1A” not always guaranteed?
Like most tiny DC-DC modules, max continuous current depends on VIN, ambient temperature, and cooling. For best results, keep wiring short and allow airflow.
-
Does it have an on/off pin?
No—only VIN/GND/VOUT. Use an external switch if you need power control.
5V, 1A Step-Up/Step-Down Voltage Regulator S13V10F5
5V, 1A Step-Up/Step-Down Voltage Regulator S13V10F5
Low stock: 1 left
Product Code
SKU:POL4083
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