DCDC Buck Converter Module with fixed 4.2V output and input range 8V to 36V, capable of delivering up to 3A. This module is designed to provide a stable 4.2V supply from a wide range of source voltages, making it suitable for Liion cell applications and other 4.2V load needs. Key benefits Stable 4.2V output from 8V to 36V input for reliable Liion cell voltage control and other 4.2V loads. Wide input range increases compatibility with automotive, solar, battery, and lab supply sources. Simple, compact module that can be integrated into projects and enclosures without complex circuitry. Fixed output simplifies design by providing a single, constant voltage to the load. Buck converter design reduces the higher input voltage to the required 4.2V efficiently for many applications. Key attributes Functionality: DCDC buck converter module with fixed 4.2V output. Input compatibility: Accepts 8V to 36V DC input. Output capability: 4.2V output, up to 3A maximum current. Performance: Delivers a steady 4.2V supply suitable for battery charging references and 4.2V loads. Form factor: Module designed for easy integration onto a PCB or within a system enclosure. Construction: Built as a compact, on board power module suitable for embedded projects. Safety and usage notes: Ensure input source provides within the specified range and connect ground references between source and load. What's included and how to use Configuration: Fixed output of 4.2V supplied by the buck module. Input connection: Connect the 8V to 36V DC source to the module input terminals. Output connection: Connect the load to the 4.2V output terminals, with a common ground to the input side. Current limit: Maximum continuous current capability is 3A; load current must not exceed this rating. Compatibility and applications Liion battery related tasks: Suitable for providing a fixed 4.2V level to singlecell Liion battery charging circuits or cell testing setups. Powering 4.2V peripherals: Useful for devices and sensors that require a precise 4.2V supply from higher voltage sources such as 12V automotive systems, solar panels, or bench supplies. Prototyping and test rigs: Ideal for lab benches and development boards that require a stable 4.2V reference or supply derived from a higher voltage source. Two to three practical use cases Case 1: Charge a single Liion cell from a car battery. Use a 12V automotive supply as input to the module to obtain a stable 4.2V output for the charging circuit or test setup. Case 2: Power a 4.2V load from a solar panel system. From a solar panel that can provide 8V to 36V, the module delivers a steady 4.2V to the device or charge controller input. Case 3: Provide a fixed 4.2V reference in a lab workstation. Use the module to convert higher bench supply voltage to a precise 4.2V reference for measurements or test fixtures. Notes This description reflects the product specifications of a 24V to 4.2V style DCDC Buck Converter Module with 8V–36V input and 3A output. It is designed to maintain a stable 4.2V at the load within the stated input range and current capability. Ensure correct polarity when connecting input and output terminals and verify that the load current does not exceed 3A continuously. In summary, this DCDC Buck Converter Module provides a straightforward, reliable way to obtain a fixed 4.2V from sources in the 8V to 36V range, delivering up to 3A for Liion related applications and other 4.2V load needs. It is a compact, module based solution suitable for integration into various projects and systems.