{"product_id":"lm2596-1-25-35v-buck-converter-step-down-power-supply-module","title":"LM2596 1.25V - 35V Step-Down Buck DC-DC Converter Power Supply Module","description":"\u003ch2\u003e📋 Overview\u003c\/h2\u003e\n\u003cp\u003eThe LM2596 Step-Down Buck DC-DC Converter is a compact, adjustable voltage regulator module that efficiently converts a higher DC input voltage down to a lower DC output voltage. Power it with any DC source from 4V to 40V, and use the on-board potentiometer to dial in your desired output voltage anywhere from 1.25V to 35V.\u003c\/p\u003e\n\u003cp\u003eIt can deliver up to 3A of continuous current, making it a versatile solution for powering microcontrollers, LED strips, sensors, motors, and a wide range of electronics projects. This is the voltage-control only version — no current limiting and no built-in display.\u003c\/p\u003e\n\u003cblockquote\u003e\n\u003cp\u003e\u003cstrong\u003e⚠️ Important:\u003c\/strong\u003e The output voltage must always be set lower than the input voltage. Do not exceed 40V input. Always verify the output voltage with a multimeter before connecting your load.\u003c\/p\u003e\n\u003c\/blockquote\u003e\n\u003chr\u003e\n\u003ch2\u003e⭐ Key Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Input Range:\u003c\/strong\u003e Accepts 4V to 40V DC input\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable Output:\u003c\/strong\u003e 1.25V to 35V DC via on-board potentiometer\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUp to 3A Output Current:\u003c\/strong\u003e Suitable for a wide range of loads\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Efficiency:\u003c\/strong\u003e Up to 92% conversion efficiency reduces heat and wasted energy\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e150 kHz Switching Frequency:\u003c\/strong\u003e Allows use of smaller filter components and provides stable output\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e±0.5% Load Regulation:\u003c\/strong\u003e Maintains consistent output voltage under varying loads\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact Size:\u003c\/strong\u003e Small enough to fit into tight project enclosures\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimple 4-Wire Connection:\u003c\/strong\u003e IN+, IN−, OUT+, OUT− — no programming or software required\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003e📊 Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModule Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDC-DC Step-Down (Buck) Converter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRegulator IC\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eLM2596 \/ LM2596S\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInput Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4V – 40V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1.25V – 35V DC (adjustable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3A max (rated), 2A recommended continuous\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConversion Efficiency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUp to 92%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSwitching Frequency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e150 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLoad Regulation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e±0.5%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Voltage Adjustment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOn-board potentiometer (multi-turn)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Ripple\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e≤30 mV (typical)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e-40°C to +85°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eConnections\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIN+, IN−, OUT+, OUT−\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBoard Dimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 43 × 21 × 14 mm (1.69 × 0.83 × 0.55 inches) L × W × H\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eApprox. 0.4 ounces (10g)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ch2\u003e🎯 Typical Applications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePowering Arduino, Raspberry Pi, ESP32, and other microcontroller boards from a higher-voltage supply\u003c\/li\u003e\n\u003cli\u003eStepping down 12V or 24V vehicle\/battery power for 5V or 3.3V devices\u003c\/li\u003e\n\u003cli\u003eDriving LED strips at a specific voltage\u003c\/li\u003e\n\u003cli\u003eSolar panel voltage regulation\u003c\/li\u003e\n\u003cli\u003eBattery-powered portable projects\u003c\/li\u003e\n\u003cli\u003eBench power supply projects\u003c\/li\u003e\n\u003cli\u003eRobotics and motor controller power rails\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003e📦 What's in the Box\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1 × LM2596 DC-DC Step-Down Buck Converter Module\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003e⚠️ Important Notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eThe output voltage must always be lower than the input voltage. A minimum dropout of approximately 1.5V–2V is required between input and output for proper regulation.\u003c\/li\u003e\n\u003cli\u003eAt higher current draws (above 2A) or large voltage differentials, the regulator IC will generate heat. Consider adding a small heatsink or ensuring adequate airflow for sustained high-current operation.\u003c\/li\u003e\n\u003cli\u003eAlways measure the output voltage with a multimeter \u003cstrong\u003ebefore\u003c\/strong\u003e connecting your load, especially after adjusting the potentiometer.\u003c\/li\u003e\n\u003cli\u003eThis module provides voltage regulation only — it does not include current limiting or constant-current functionality.\u003c\/li\u003e\n\u003cli\u003eThis module does not include a built-in voltage\/current display.\u003c\/li\u003e\n\u003cli\u003eObserve correct polarity when wiring. Reverse polarity on the input can damage the module.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch2\u003e📄 Documentation \u0026amp; Resources\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/envistiamall.com\/blogs\/learn\/lm2596-dc-dc-step-down-buck-converter-user-guide\" target=\"_blank\" title=\"LM2596 1.25-35V 3A DC-DC Step-Down Buck Converter User Guide\" rel=\"noopener\"\u003eLM2596 DC-DC Buck Converter User Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca rel=\"noopener\" title=\"All DC\/DC Buck Converter Power Supply Module User Guides at Envistia Mall\" href=\"https:\/\/envistiamall.com\/blogs\/learn\/tagged\/buck-converters\" target=\"_blank\"\u003eAll Buck Converter Power Supply Module User Guides\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003cp\u003e\u003cem\u003eSold and supported by \u003ca href=\"https:\/\/envistiamall.com\" rel=\"noopener noreferrer\" target=\"_blank\"\u003eEnvistia Mall\u003c\/a\u003e. Ships from the USA. For wiring diagrams, sample code, and troubleshooting, see the User Guide. The manufacturer and Envistia LLC (dba Envistia Mall) are not responsible for any damages or losses resulting from the use of this product. Always follow proper electrical safety practices when working with electronic components. Specifications are based on manufacturer data and are subject to change without notice.\u003c\/em\u003e\u003c\/p\u003e","brand":"Envistia","offers":[{"title":"Default Title","offer_id":28453681289,"sku":"EM-POWER-0012","price":2.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1641\/0911\/products\/dc-dc-125-35v-lm2596-step-down-buck-dc-dc-converter-power-supply-module-542129.jpg?v=1594221451","url":"https:\/\/envistiamall.com\/products\/lm2596-1-25-35v-buck-converter-step-down-power-supply-module","provider":"Envistia Mall","version":"1.0","type":"link"}