{"product_id":"lm317t-adjustable-voltage-regulator-to-220-package","title":"LM317T Adjustable Voltage Regulator (TO-220 Package)","description":"\u003cp data-path-to-node=\"4\" id=\"p-rc_1154071cc824183e-624\"\u003eWhen a standard fixed-voltage regulator (like a 5-Volt 7805 or 3.3-Volt LD33V) doesn't match the specific power requirements of your project, the LM317 is the universal fallback that every electronics designer keeps in their parts bin. \u003cspan class=\"citation-538 citation-end-538\"\u003eThis is an adjustable three-terminal linear voltage regulator capable of supplying over 1.5 Amps of current over an exceptionally wide output range.\u003csup class=\"superscript\" data-turn-source-index=\"2\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e \u003cspan class=\"citation-537 citation-end-537\"\u003eInstead of being locked to a single voltage at the factory, the LM317 uses a reference pin that allows you to set the output to anywhere from 1.25 Volts all the way up to 37 Volts by simply using a pair of standard external resistors.\u003csup class=\"superscript\" data-turn-source-index=\"3\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e \u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c\/p\u003e\n\u003cp data-path-to-node=\"5\"\u003eBecause it is a linear regulator, it provides incredibly clean, low-noise power that is highly preferred for sensitive analog circuits and audio amplifiers. However, it achieves this smooth regulation by shedding the excess voltage as pure heat. Housed in the industry-standard TO-220 package, it features a heavy metal backing tab designed to be bolted to an aluminum heatsink, allowing it to safely dissipate that thermal energy while keeping your power supply rock-solid.\u003c\/p\u003e\n\u003cp data-path-to-node=\"6\"\u003e\u003cb data-path-to-node=\"6\" data-index-in-node=\"0\"\u003eKey Features \u0026amp; Functional Advantages\u003c\/b\u003e\u003c\/p\u003e\n\u003cul data-path-to-node=\"7\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"7,0,0\" id=\"p-rc_1154071cc824183e-625\"\u003e\u003cb data-path-to-node=\"7,0,0\" data-index-in-node=\"0\"\u003eFully Adjustable Output:\u003c\/b\u003e\u003cspan class=\"citation-536 citation-end-536\"\u003e Gives you complete freedom to set any custom voltage between 1.25 Volts and 37 Volts using just a simple external resistor divider network.\u003csup class=\"superscript\" data-turn-source-index=\"4\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e \u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"7,1,0\"\u003e\u003cb data-path-to-node=\"7,1,0\" data-index-in-node=\"0\"\u003eHigh Current Capacity:\u003c\/b\u003e Comfortably provides up to 1.5 Amps of continuous output current (provided adequate heatsinking is used).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"7,2,0\"\u003e\u003cb data-path-to-node=\"7,2,0\" data-index-in-node=\"0\"\u003eUltra-Clean Power:\u003c\/b\u003e Being a linear regulator, it does not produce the high-frequency switching noise that buck converters do, making it ideal for sensitive audio and radio frequency applications.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"7,3,0\" id=\"p-rc_1154071cc824183e-626\"\u003e\u003cspan class=\"citation-535\"\u003e\u003c\/span\u003e\u003cb data-path-to-node=\"7,3,0\" data-index-in-node=\"0\"\u003e\u003cspan class=\"citation-535\"\u003eIndestructible Safety Features:\u003c\/span\u003e\u003c\/b\u003e\u003cspan class=\"citation-535 citation-end-535\"\u003e Features built-in internal thermal overload protection and short-circuit current limiting.\u003csup class=\"superscript\" data-turn-source-index=\"5\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e If it gets too hot or a wire crosses, it safely shuts itself down instead of catching fire. \u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"7,4,0\"\u003e\u003cb data-path-to-node=\"7,4,0\" data-index-in-node=\"0\"\u003eConstant Current Capability:\u003c\/b\u003e Beyond regulating voltage, the LM317 can be cleverly wired with a single resistor to act as a highly accurate constant-current source, perfect for driving high-power LEDs or charging batteries safely.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-path-to-node=\"8\"\u003e\u003cb data-path-to-node=\"8\" data-index-in-node=\"0\"\u003ePerfect For\u003c\/b\u003e\u003c\/p\u003e\n\u003cul data-path-to-node=\"9\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"9,0,0\"\u003e\u003cb data-path-to-node=\"9,0,0\" data-index-in-node=\"0\"\u003eVariable Bench Power Supplies:\u003c\/b\u003e The foundational component for building your own adjustable electronics lab power supply.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"9,1,0\" id=\"p-rc_1154071cc824183e-627\"\u003e\u003cspan class=\"citation-534\"\u003e\u003c\/span\u003e\u003cb data-path-to-node=\"9,1,0\" data-index-in-node=\"0\"\u003e\u003cspan class=\"citation-534\"\u003eCustom Battery Chargers:\u003c\/span\u003e\u003c\/b\u003e\u003cspan class=\"citation-534 citation-end-534\"\u003e Ideal for creating precise, safe charging circuits for Lead-Acid, NiCd, or NiMH battery packs.\u003csup class=\"superscript\" data-turn-source-index=\"6\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e \u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"9,2,0\"\u003e\u003cb data-path-to-node=\"9,2,0\" data-index-in-node=\"0\"\u003eAnalog Audio Circuits:\u003c\/b\u003e Providing perfectly smooth, noise-free power to sensitive pre-amplifiers and operational amplifier arrays.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"9,3,0\" id=\"p-rc_1154071cc824183e-628\"\u003e\u003cb data-path-to-node=\"9,3,0\" data-index-in-node=\"0\"\u003eLaser and LED Driving:\u003c\/b\u003e\u003cspan class=\"citation-533 citation-end-533\"\u003e Easily configured as a current limiter to protect sensitive, high-power laser diodes and customized LED arrays from burning out.\u003csup class=\"superscript\" data-turn-source-index=\"7\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e \u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-path-to-node=\"10\"\u003e\u003cb data-path-to-node=\"10\" data-index-in-node=\"0\"\u003eTechnical Specifications\u003c\/b\u003e\u003c\/p\u003e\n\u003cul data-path-to-node=\"11\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"11,0,0\"\u003e\u003cb data-path-to-node=\"11,0,0\" data-index-in-node=\"0\"\u003eDevice Type:\u003c\/b\u003e Linear Voltage Regulator\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"11,1,0\"\u003e\u003cb data-path-to-node=\"11,1,0\" data-index-in-node=\"0\"\u003eOutput Type:\u003c\/b\u003e Adjustable\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"11,2,0\"\u003e\u003cb data-path-to-node=\"11,2,0\" data-index-in-node=\"0\"\u003eInput Voltage Maximum:\u003c\/b\u003e Up to 40 Volts DC\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"11,3,0\" id=\"p-rc_1154071cc824183e-629\"\u003e\u003cspan class=\"citation-532\"\u003e\u003c\/span\u003e\u003cb data-path-to-node=\"11,3,0\" data-index-in-node=\"0\"\u003e\u003cspan class=\"citation-532\"\u003eOutput Voltage Range:\u003c\/span\u003e\u003c\/b\u003e\u003cspan class=\"citation-532 citation-end-532\"\u003e 1.25 Volts to 37 Volts DC\u003csup class=\"superscript\" data-turn-source-index=\"8\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e \u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"11,4,0\" id=\"p-rc_1154071cc824183e-630\"\u003e\u003cspan class=\"citation-531\"\u003e\u003c\/span\u003e\u003cb data-path-to-node=\"11,4,0\" data-index-in-node=\"0\"\u003e\u003cspan class=\"citation-531\"\u003eMaximum Output Current:\u003c\/span\u003e\u003c\/b\u003e\u003cspan class=\"citation-531 citation-end-531\"\u003e 1.5 Amps\u003csup class=\"superscript\" data-turn-source-index=\"9\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e \u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c!----\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"11,5,0\"\u003e\u003cb data-path-to-node=\"11,5,0\" data-index-in-node=\"0\"\u003eVoltage Drop-Out:\u003c\/b\u003e Typically requires the input voltage to be at least 2 to 2.5 Volts higher than your desired output voltage\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"11,6,0\" id=\"p-rc_1154071cc824183e-631\"\u003e\u003cspan class=\"citation-530\"\u003e\u003c\/span\u003e\u003cb data-path-to-node=\"11,6,0\" data-index-in-node=\"0\"\u003e\u003cspan class=\"citation-530\"\u003ePackage Type:\u003c\/span\u003e\u003c\/b\u003e\u003cspan class=\"citation-530 citation-end-530\"\u003e 3-Pin TO-220 (Vertical through-hole with metal heatsink tab)\u003csup class=\"superscript\" data-turn-source-index=\"10\"\u003e\u003c!----\u003e\u003c\/sup\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"K-TECHNICS","offers":[{"title":"Default Title","offer_id":42867781271623,"sku":null,"price":0.0,"currency_code":"KES","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0680\/7637\/2039\/files\/AD251-2.webp?v=1781155509","url":"https:\/\/www.ktechnics.com\/products\/lm317t-adjustable-voltage-regulator-to-220-package","provider":"K-TECHNICS","version":"1.0","type":"link"}