3.5A DC-DC Buck Converter Step Down Regulator Module (4.5-27V to 3V) $ 17.38 This buck converter is designed to convert input voltage into lower output voltage, and its input voltage range is 4.5-27V. 22. Multiple protection functions including over-temperature shutdown, under-voltage lockout (UVLO), BS-voltage protection, and short circuit protection. 33. Made with high quality electronic components, stable performance. 44. Reasonable component layout, easy to wire and use. 55. Application: Motor toy, LED, CCTV camera, instrument, battery charger, audio amplifier and more.
