This is a 12V to 4.2V DCDC buck converter with an input range of 8V to 36V and an output rated up to 3A. It provides a fixed 4.2V output from higher voltage sources using buck regulation, making it suitable for loads that require a precise 4.2V supply. Key benefits Stable 4.2V output from a wide input range: accepts 8V–36V and delivers a fixed 4.2V for compatible loads. current capability: supports up to 3A output, enabling power for moderate current devices from a single highervoltage source. Simple, direct power solution: reduces complexity by providing a single device that steps down to the required 4.2V without additional circuitry. Consistent performance for 4.2V loads: ideal for applications that operate at or require 4.2V in the system. Key attributes Functionality: DCDC buck converter that steps down higher input voltage to a fixed 4.2V output. Input compatibility: accepts 8V to 36V input, broadening compatibility with automotive, industrial, and bench power sources. Output specification: fixed 4.2V output with a maximum current of 3A. Output stability: designed to provide a reliable 4.2V supply for loads that require this level. Size and materials: size and housing materials are not specified in the product title; no additional material details are provided here. Performance: capable of delivering up to 3A to a 4.2V load from an 8–36V source. Compatibility Suitable for loads that require a 4.2V supply from highervoltage sources. Works with power sources within the 8V–36V range and can support devices that operate at or around 4.2V with modest current needs. Specifications at a glance Input voltage range: 8V–36V Output voltage: 4.2V (fixed) Maximum output current: 3A Use cases Battery and power electronics testing: provide a stable 4.2V reference or supply for singlecell Liion related circuits and test boards from a highervoltage bench or automotive source. Liion compatible devices: power 1S Liion battery peripherals or 4.2Vgraded components from a highervoltage supply, enabling integration in compact systems that otherwise require a dedicated 4.2V source. Prototyping and hobby projects: run 4.2Vrated sensors, microcontrollers, or small modules from 12V automotive batteries or other 8–36V sources without needing multiple regulators. Notes The description reflects the product's stated input range, output voltage, and current capabilities as indicated in the title. Size, housing material, and additional features are not specified here. Ensure proper wiring and applicable safety considerations when integrating into your system.