Electrifier XL4005 DC-DC Buck Converter 5V-32V to 1.25-32V 5A Module | 5V-32V input to 1.25-32V output | genuine XL4005E1 IC at 300kHz | up to 75W | for Arduino, ESP32 and solar builds

Most DIY power builds hit the same mismatch: a 12V battery, a 24V SMPS or a solar panel on the input side, and a load that wants 5V, 3.3V or 9V on the other. The Electrifier XL4005 Buck Converter Module closes that gap on a single 45mm board — feed it any DC source from 5V to 32V and set exactly the rail your project needs, anywhere from 1.25V to 32V, using the 3296 multi-turn trimpot for fine, repeatable adjustment. At its core is a genuine XLSEMI XL4005E1 step-down switching regulator running at 300kHz — twice the switching rate of older 150kHz LM2596 designs. Faster switching means smaller output ripple and tighter regulation when the load shifts suddenly. A closed toroidal inductor keeps radiated EMI low for use near analog or RF circuitry, while dual 220μF 35V electrolytic capacitors and an SS-series Schottky diode hold the output steady. The module accepts 5V to 32V DC in and delivers an adjustable 1.25V to 32V DC out at up to 5A peak, with roughly 4.5A continuous and total load near 75W. Above 50W, fit a standard TO-220 aluminium heatsink with thermal paste for sustained operation. Rated operating temperature runs from −40°C to +85°C, the board measures about 45mm long and weighs only 12g, and input and output connect through clearly marked solder pads (IN+, IN−, OUT+, OUT−). It suits ESP32 and STM32 power rails, solar-to-battery charging, manual Li-ion, LiFePO4 and lead-acid charger builds, LED driver projects, 12V-to-5V or 24V-to-12V vehicle conversions, and adjustable lab bench supplies — a practical fit for workshops, electronics labs and college engineering projects that need clean, adjustable DC without a separate regulated supply for every voltage. Every Electrifier XL4005 module is backed by a 1-year replacement warranty from Electrifier Innovations Private Limited and built under ISO-certified manufacturing, with India-based support.