Fixedoutput DCDC buck converter module that takes an 8V to 36V input and provides a steady 4.2V output at up to 1A. The device is designed as a compact module to deliver a reliable 4.2V rail for applications requiring a fixed Liion cell voltage or a stable 4.2V reference. Key benefits Stable 4.2V output from a wide input range (8V–36V), enabling a consistent supply for 4.2V applications. Simple, compact module form factor that can be integrated into electronic projects with minimal external components. Buck converter topology provides efficient voltage reduction compared with linear regulation, reducing heat and power loss on the input side. Up to 1A output current supports moderate load demands, including charging circuits and small 4.2Vpowered subsystems. Clear specification alignment with the model: 12V to 4.2V DCDC Buck Converter Modul Converter (8V36V Input, 1A Output), Buck Voltage Power Converter. Key attributes Functionality: fixed 4.2V output suitable for Liion related circuits and other 4.2V rail needs; converts higher input voltage down to a precise 4.2V level. Compatibility: accepts input voltages from 8V to 36V and delivers up to 1A of output current. Performance: designed as a dedicated buck converter module to provide a stable 4.2V supply under the stated input range and current rating. Form factor: presented as a module suitable for inclusion in DIY projects, prototypes, or smaller production builds. Reliability: constructed as a DCDC buck module intended for continuous operation within its specified input and output ranges. Applications Liion battery related circuits: supply a fixed 4.2V reference or rail for downstream charging control circuitry in conjunction with proper CC/CV charging management. 4.2V rail for sensors, microcontrollers, or analog circuits that require a precise 4.2V supply from higher voltage sources such as car or industrial power supplies. Small electronic projects and robotics that need a dedicated 4.2V power rail derived from an 8–36V source, simplifying power design and wiring. Notes The module provides a fixed 4.2V output; for battery charging, ensure appropriate charging control and safety circuitry is used upstream and downstream as required by the battery specification. Thermal considerations may apply when delivering near the rated current; provide adequate ventilation or heat sinking as needed.