The 24V to 4.2V DCDC Buck Converter Module is a compact power module that steps down an input between 8V and 36V to a fixed 4.2V output. It provides up to 3A of continuous current, making it suitable for powering or supplying a 4.2V rail for devices and charging circuits from higher voltage sources such as automotive, industrial, or solar systems. Key benefits Provides a fixed 4.2V output from a wide input range (8V to 36V), enabling use with various power sources. Delivers up to 3A continuous current to support moderate load requirements. Compact module form factor for easy integration into projects, enclosures, or PCB assemblies. Simple wiring and installation as a ready to use buck converter module. Enables a single rail solution for loads and charging circuits that require a 4.2V supply derived from higher voltage sources. Key attributes Functionality: DCDC buck converter module with fixed 4.2V output. Input range: 8V to 36V. Output: 4.2V fixed, up to 3A. Output type: DC. Form factor: module suitable for mounting in projects and systems. Compatibility: designed to derive a stable 4.2V rail from a variety of higher voltage sources, including automotive and solar applications. Applications (use cases) Powering Liion battery charging management circuits by converting automotive or solar voltages (8V–36V) to a fixed 4.2V supply for charging control stages. Providing a stable 4.2V rail for embedded systems or sensor modules that require a fixed Liion style voltage reference from higher voltage sources. Supplying a dedicated 4.2V supply in test benches or portable equipment where a regulated 4.2V line is needed from a higher voltage source.