This 12V to 4.2V DCDC Buck Converter Module delivers a fixed 4.2V output from an input range of 8V to 36V, up to 2A. The module is designed for compact integration in power, charging, and electronics projects that require a precise 4.2V supply from higher voltage sources. Key benefits Provides a stable 4.2V output for Liion cell charging and other 4.2V loads, helping ensure consistent performance. Wide input compatibility allows use with 12V, 24V, or other common supplies within the 836V range. Capable of delivering up to 2A, suitable for small to medium load applications such as battery charging or powering peripheral circuits. Compact module form factor simplifies installation in enclosures, on development boards, or inside portable devices. Simple integration with standard DC power sources and electrical connections. Key attributes Functionality: DCDC buck conversion from 836V input to a regulated 4.2V output, up to 2A. Compatibility: Suitable for applications requiring a fixed 4.2V supply from higher voltage sources, including Liion charging circuits and other 4.2V loads. Size and form: compact module intended for board mounting and easy incorporation into projects. Output performance: rated to deliver up to 2A while maintaining regulated 4.2V output within its operating range. Durability and build: module designed to operate in standard electrical environments with common connector interfaces. Use cases Liion singlecell charging from a vehicle or 12V supply: the module provides a fixed 4.2V charging voltage to a single Liion cell or 4.2V devices from higher voltage sources. 4.2V powered sensor or microcontroller systems: for projects that require a stable 4.2V supply sourced from automotive, solar, or laboratory power supplies. Bench testing and prototyping: use as a reliable 4.2V reference or power source for 4.2V components during development. Notes Ensure input supply remains within the specified range of 836V and that the current draw does not exceed 2A to maintain regulation. Mounting and wiring should follow standard electrical safety practices.