{"product_id":"lm317-adjustable-dc-dc-buck-step-down-voltage-regulator-4-5v-40v","title":"LM317 Adjustable DC-DC Buck Voltage Regulator 4.5V–40V","description":"\n\u003ch2\u003eLM317 Adjustable Voltage Regulator – Reliable DC-DC Buck Step-Down Power Supply\u003c\/h2\u003e\n\u003cp\u003eWhether you're powering an MP3 player, charging a phone, or prototyping an electronics project, this \u003cstrong\u003eLM317 Buck Step-Down DC-DC Converter\u003c\/strong\u003e gives you precise, adjustable output voltage in a compact, rugged blue module. Set your desired output anywhere from \u003cstrong\u003e1.2V to 37V\u003c\/strong\u003e using the onboard potentiometer — no extra programming or complex setup required.\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 4.5V–40V DC input, compatible with a broad range of power sources and batteries.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdjustable Output:\u003c\/strong\u003e Dial in any output voltage from 1.2V to 37V using the built-in potentiometer — perfect for custom electronics builds.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSolid Current Output:\u003c\/strong\u003e Delivers up to 1.5A continuous (2.2A typical), suitable for charging phones, MP3\/MP4 players, and other low-power devices.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBuilt-In Protection:\u003c\/strong\u003e Safeguards against overvoltage, overcurrent, and short-circuit conditions for dependable, worry-free operation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; Lightweight:\u003c\/strong\u003e Measures just 53 × 22 × 15 mm and weighs only 17g — fits easily into tight project enclosures.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSimple Wiring:\u003c\/strong\u003e Clear VIN\/GND (input) and VOUT\/GND (output) terminals make wiring fast and straightforward.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Operating Temperature:\u003c\/strong\u003e Rated from –55°C to +150°C for versatile use across environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable style=\"width:100%; border-collapse:collapse;\"\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eInput Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003e4.5V – 40V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eOutput Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003e1.2V – 37V (adjustable)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eOutput Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003e1.5A (min.) \/ 2.2A (typical)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eMax Input-Output Voltage Difference\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003e40V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003e–55°C to +150°C\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eCharacteristic Frequency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003e100 MHz\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eColor\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003eBlue\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003e53 × 22 × 15 mm (2.09 × 0.87 × 0.59 in)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background:#f5f5f5;\"\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003e17g\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:6px 10px;border:1px solid #ddd;\"\u003eMade in China\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 × LM317 Adjustable Voltage Regulator Power Supply Module\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cp\u003eIdeal for electronics hobbyists, engineers, and makers. Use it to power \u003cstrong\u003ecell phones, MP3 players, MP4 players\u003c\/strong\u003e, LED strips, Arduino projects, robotics, and any other device requiring a stable, regulated DC voltage source.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Products You May Like\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/100w-dual-port-car-charger-starlink-mini-fast-charging\"\u003e100W Dual-Port Car Charger – Fast Charging\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/140w-usb-c-fast-charging-adapter-auto-power-off-overcharge-protection\"\u003e140W USB-C Fast Charger with Auto Power-Off Overcharge Protection\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/140w-auto-eject-usb-c-charging-cable-anti-overcharge-battery-guard\"\u003e140W Auto-Eject USB-C Cable – Anti-Overcharge Battery Guard\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eFor more information on electrical component safety standards, visit the U.S. Consumer Product Safety Commission (CPSC).\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eNote: Due to differences in monitor calibration and lighting, actual product color may vary slightly from images. Please allow ±1–2cm measurement deviation.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/en.wikipedia.org\/wiki\/Voltage_regulator\" target=\"_blank\" rel=\"noopener\"\u003eVoltage regulator\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: What is the maximum output current of this LM317 voltage regulator module?\u003c\/h4\u003e\n\u003cp\u003eA: This LM317 DC-DC buck step-down converter delivers a minimum output current of 1.5A and a typical output of 2.2A, making it suitable for powering MP3 players, MP4 devices, cell phone chargers, and small electronics projects.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can I use this voltage regulator for Arduino or DIY electronics projects?\u003c\/h4\u003e\n\u003cp\u003eA: Absolutely. With its wide adjustable output range of 1.2V to 37V and a broad input range of 4.5V–40V, this module is a popular choice for Arduino builds, robotics, LED drivers, and custom power supply circuits. Simply adjust the onboard potentiometer to set your desired output voltage.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Is this module protected against short circuits and overvoltage?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The module features built-in protection against overvoltage, overcurrent, and short-circuit conditions, ensuring safe and reliable operation during use.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What are the physical dimensions of this voltage regulator board?\u003c\/h4\u003e\n\u003cp\u003eA: The board measures 53 × 22 × 15 mm (approximately 2.09 × 0.87 × 0.59 inches) and weighs just 17g, making it compact and easy to integrate into most project enclosures.\u003c\/p\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"What is the maximum output current of this LM317 voltage regulator module?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"This LM317 DC-DC buck step-down converter delivers a minimum output current of 1.5A and a typical output of 2.2A, making it suitable for powering MP3 players, MP4 devices, cell phone chargers, and small electronics projects.\"}}, {\"@type\": \"Question\", \"name\": \"Can I use this voltage regulator for Arduino or DIY electronics projects?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Absolutely. With its wide adjustable output range of 1.2V to 37V and a broad input range of 4.5V–40V, this module is a popular choice for Arduino builds, robotics, LED drivers, and custom power supply circuits. Simply adjust the onboard potentiometer to set your desired output voltage.\"}}, {\"@type\": \"Question\", \"name\": \"Is this module protected against short circuits and overvoltage?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. The module features built-in protection against overvoltage, overcurrent, and short-circuit conditions, ensuring safe and reliable operation during use.\"}}, {\"@type\": \"Question\", \"name\": \"What are the physical dimensions of this voltage regulator board?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The board measures 53 × 22 × 15 mm (approximately 2.09 × 0.87 × 0.59 inches) and weighs just 17g, making it compact and easy to integrate into most project enclosures.\"}}]}\u003c\/script\u003e","brand":"Oasis Select","offers":[{"title":"United States","offer_id":47710863982697,"sku":"200007763:201336106","price":21.82,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0679\/7931\/3257\/files\/S7fe87c3e295b4ed3833f061a10c18014t.webp?v=1782061202","url":"https:\/\/oasis-select.com\/products\/lm317-adjustable-dc-dc-buck-step-down-voltage-regulator-4-5v-40v","provider":"Oasis Select","version":"1.0","type":"link"}