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Keep Output Voltage Steady with 12V 2.5A Step-Up/Step-Down Voltage Regulator S13V25F12
The 12V 2.5A Step-Up/Step-Down Voltage Regulator S13V25F12 keeps output voltage steady even when the input moves above or below the target level.
That makes it a good choice for battery systems, mobile robots, and field devices that need dependable power across a wide input range.
Important: Choose a regulator based on your full input-voltage range, startup current, thermal limits, and required headroom. Real output current depends on input voltage, airflow, and temperature.
Why you'll love it
- Step-up + step-down in one board: automatically boosts or bucks so VOUT stays at 12V
- High efficiency: the S13V25Fx family typically delivers >85% efficiency and supports typical continuous currents in the 1A–3A range…
- Enable pin for power saving: use EN to disable the regulator; low-power state draw is typically ~2µA to 10µA per volt on VIN
- Simple 4-wire hookup: VIN , GND , VOUT , plus optional EN
- Input protection note: Pololu lists reverse-voltage protection for this family as up to 20V
- Great when your supply sometimes dips below 12V (boost) or rises above it (buck)
What you can build
Useful for battery-powered devices, mobile robots, field instruments, and portable systems where the input can move above and below the target output.
Compare regulator options
| Model | Topology | Output | Max current |
|---|---|---|---|
| D24V22F12 | Buck | 12 V | 2.2 A |
| D36V28F12 | Buck | 12 V | 2.4 A |
| S13V25F12 | Buck-Boost | 12 V | 2.5 A |
| D42V55F12 | Buck | 12 V | 4.5 A |
| D24V150F12 | Buck | 12 V | 15 A |
| U3V16F12 | Boost | 12 V | — |
| U3V40F12 | Boost | 12 V | — |
Technical specifications
| Product | 12V 2.5A Step-Up/Step-Down Voltage Regulator S13V25F12 |
|---|---|
| Brand | Pololu |
| Model | S13V25F12 |
| Category | DC-DC Step-Up/Step-Down Regulator |
| Topology | Step-Down (Buck) |
| Output Voltage | 12 V |
| Max Current | 2.5 A |
| Support | Official Pololu product search and support resources linked below |
Official resources
Find this product on Pololu | Pololu support and resources
What’s in the box
1 × 12V 2.5A Step-Up/Step-Down Voltage Regulator S13V25F12
Frequently Asked Questions
Can I power a microcontroller with this?
Yes, if the regulator’s output voltage and current match your controller and all attached loads.
Yes, if the regulator’s output voltage and current match your controller and all attached loads.
Will it run cool at full load?
It depends on input voltage, airflow, and load current. Check thermal limits in the official Pololu resources.
It depends on input voltage, airflow, and load current. Check thermal limits in the official Pololu resources.
Is this better than a linear regulator?
For many builds, yes. Switching regulators are usually more efficient and waste less heat.
For many builds, yes. Switching regulators are usually more efficient and waste less heat.
Manila stock. Order before 16:00 PHT, ships today via J&T or LBC. Provincial: 1–3 working days.
Schools / class POs: we accept Purchase Orders for accredited schools and universities. contact us with your PO details.
Returns: 7-day inspection window for DOA units. Email proof of issue and we ship a replacement.
Compatibility & downloads
// downloads
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