This fixedoutput DCDC buck converter module provides a stable 4.2V rail from higher voltage sources in an 8 to 36V input range, delivering up to 1A of current. It is designed as a compact, PCBmounted module for easy integration in projects and devices that require a precise 4.2V supply. Key benefits Reliable fixed output: Delivers a precise 4.2V output at up to 1A, ideal for loads that require a defined fullcharge voltage reference. Wide input versatility: Accepts 8V to 36V input, enabling use with automotive, industrial, and batterypowered systems. Efficient regulation: Employs a buck switching regulator to convert higher input voltages down to a stable 4.2V rail. Compact and easy to integrate: A compact module designed for straightforward mounting on a PCB and simple wiring in tight spaces. Suitable for testing and development: Provides a dependable fixed 4.2V source for experiment rigs, lab benches, and prototyping. Key attributes Functionality: DCDC buck converter module with fixed 4.2V output and 1A maximum current. Input range: 8V to 36V input voltage. Output: Fixed 4.2V output. Form factor: Compact, PCBmounted module designed for easy integration in electronic assemblies. Performance: Delivers a stable 4.2V rail within the specified input range and load up to 1A. Applications and use cases Robotics and embedded systems: Power 4.2V peripherals, sensors, or accessory devices from a highervoltage onboard supply or battery system. Battery charging and testing setups: Provide a fixed 4.2V reference rail for Liion charging circuits, charge controllers, or test benches that require a controlled 4.2V source. Automotive and industrial equipment: Supply a stable 4.2V rail from vehicle or industrial power sources that operate within the 8–36V range for dedicated subsystems or measurement electronics. Usage notes Ensure the input voltage remains within the specified 8–36V range and connect with correct polarity. The module is capable of delivering up to 1A at 4.2V; design the load and wiring to account for current requirements and thermal considerations. This module provides a fixed 4.2V output and is not adjustable; select it when a constant 4.2V supply is required and variable voltage is not needed.