KEHIPI AITRIP-3A-3.3V 12V 10PCS power adapter

Compact DC-DC buck module for DIY and embedded power

This pack supplies ten fixed-output buck converters that step a 14 V to 26 V input down to a steady 12 V at up to 3 A peak. The tiny 17.5 mm by 12 mm footprint suits space-constrained projects such as mobile power banks, camera rigs, monitoring nodes and aviation models where weight and volume are critical. Each module uses a synchronous rectifier design rated for 96 % maximum efficiency when the input-to-output differential is at least 2 V. The operating range spans -40 °C to 85 °C for harsh environments.

Input range and continuous current limits

The modules accept 14 V to 26 V DC and deliver a fixed 12 V output; they cannot operate from lower voltages such as 12 V batteries or 5 V USB sources. Peak output current is 3 A, but sustained loads should stay below 1.8 A to avoid thermal stress over long periods. Switching runs at up to 1.5 MHz, yielding a no-load ripple of 30 mV that may rise under heavier draw. No external heatsink is included, so airflow or duty-cycle management is required for continuous high-current use.

Verify your source voltage

Confirm that your power source stays within the 14 V to 26 V window under all conditions, including voltage sag under load. Measure the actual continuous current your circuit draws; if it exceeds 1.8 A you will need additional cooling or a higher-rated converter. The fixed 12 V output cannot be adjusted, so ensure your downstream electronics tolerate exactly that level. Finally, check that the 17.5 mm by 12 mm board outline fits your enclosure or PCB layout.