{"product_id":"dc-6v-40v-to-5v-3a-dual-usb-step-down-converter-module-lm2596","title":"DC 6V–40V to 5V 3A Dual USB Step-Down Converter LM2596","description":"\u003ch2\u003eDC to DC Dual USB Step-Down Converter Module – LM2596\u003c\/h2\u003e\n\u003cp\u003ePower your DIY projects with confidence using this compact and highly efficient \u003cstrong\u003eDC-DC Step-Down (Buck) Converter Module\u003c\/strong\u003e. Built around the LM2596 chip, it accepts a wide input voltage range of \u003cstrong\u003e6V to 40V\u003c\/strong\u003e and delivers a stable \u003cstrong\u003e5V \/ 3A output\u003c\/strong\u003e via dual USB ports — perfect for charging smartphones, MP3 players, MP4 devices, tablets, and other USB-powered gadgets directly from car batteries, solar panels, lead-acid batteries, or any compatible DC power source.\u003c\/p\u003e\n\n\u003cp\u003eWith an impressive \u003cstrong\u003e92% conversion efficiency\u003c\/strong\u003e and built-in short circuit protection, this module is a reliable choice for makers, engineers, and hobbyists who need regulated 5V USB power in automotive, off-grid, or bench-top applications.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eMade in Mainland China.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Input Range:\u003c\/strong\u003e Accepts 6V to 40V DC input (ideal for 12V and 24V systems)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStable 5V Output:\u003c\/strong\u003e Fixed 5V output voltage for universal USB device compatibility\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual USB Ports:\u003c\/strong\u003e Charge two devices simultaneously at up to 3A total output\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eHigh Efficiency:\u003c\/strong\u003e Up to 92% conversion efficiency minimises heat and energy waste\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eShort Circuit Protection:\u003c\/strong\u003e Built-in safeguard against overload and short circuits\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Operating Temperature:\u003c\/strong\u003e Reliable performance from -40°C to +85°C\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact Form Factor:\u003c\/strong\u003e Only 59mm × 21mm × 17mm — fits tight spaces and custom enclosures\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e150 kHz Switching Frequency:\u003c\/strong\u003e Smooth, stable regulation with minimal ripple\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable style=\"width:100%; border-collapse:collapse;\"\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e\u003cstrong\u003eInput Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e6V – 40V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e\u003cstrong\u003eOutput Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e5V (fixed)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e\u003cstrong\u003eOutput Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e3A (max)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e\u003cstrong\u003eSwitching Frequency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e150 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e\u003cstrong\u003eConversion Efficiency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003eUp to 92%\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e-40°C to +85°C\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e\u003cstrong\u003eColor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003eRed\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e59mm × 21mm × 17mm\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003e\u003cstrong\u003eChip\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;\"\u003eLM2596\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × DC-DC Step-Down Converter Module (LM2596, Dual USB)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eYou May Also Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/1-2-inch-8-piece-hex-short-socket-set-vanadium-steel\"\u003e1\/2\" Drive 8-Piece Hex Short Socket Set – Vanadium Steel\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/10-piece-complete-gardening-tool-kit\"\u003e10-Piece Gardening Tool Kit – Iron Head \u0026amp; Plastic Handle\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/hex-nut-bolt-extractor-tool-kit-10-piece\"\u003e10-Pc Hex Nut \u0026amp; Bolt Extractor Kit 9–19mm | HIP Tools\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.epa.gov\/recycle\/used-lithium-ion-batteries\" target=\"_blank\" rel=\"noopener\"\u003eEPA guidance on lithium-ion battery handling\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What input voltage range does this DC-DC step-down converter module support?\u003c\/h4\u003e\n\u003cp\u003eA: This LM2596-based step-down converter accepts a wide input voltage range of \u003cstrong\u003e6V to 40V DC\u003c\/strong\u003e, making it compatible with common power sources such as 12V car batteries, 24V truck systems, and solar or lithium battery packs.\u003c\/p\u003e\n\u003ch4\u003eQ: How many devices can I charge at once with this module?\u003c\/h4\u003e\n\u003cp\u003eA: The module features \u003cstrong\u003etwo USB ports\u003c\/strong\u003e, allowing you to charge two devices simultaneously. The total combined output is up to 3A at a stable 5V, suitable for smartphones, MP3\/MP4 players, and other standard USB-powered devices.\u003c\/p\u003e\n\u003ch4\u003eQ: Is this module safe to use in automotive or DIY electronics projects?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The module includes \u003cstrong\u003ebuilt-in short circuit protection\u003c\/strong\u003e and operates reliably across a wide temperature range (-40°C to +85°C), making it well-suited for automotive, robotics, off-grid, and bench-top DIY electronics applications.\u003c\/p\u003e\n\u003ch4\u003eQ: What are the physical dimensions of this converter module?\u003c\/h4\u003e\n\u003cp\u003eA: The module measures \u003cstrong\u003e59mm × 21mm × 17mm\u003c\/strong\u003e — a very compact size that fits easily into custom enclosures, project boxes, or vehicle dashboards.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What input voltage range does this DC-DC step-down converter module support?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This LM2596-based step-down converter accepts a wide input voltage range of 6V to 40V DC, making it compatible with common power sources such as 12V car batteries, 24V truck systems, and solar or lithium battery packs.\"}}, {\"@type\": \"Question\", \"name\": \"How many devices can I charge at once with this module?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The module features two USB ports, allowing you to charge two devices simultaneously. 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