{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM317HVK STEEL","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM317HVK-STEEL","canonicalUrl":"https://icboms.com/texas-instruments/LM317HVK-STEEL","factsUrl":"https://icboms.com/api/mcp/products/LM317HVK%20STEEL","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM317HVK STEEL adjustable positive voltage regulator, 1.5A output, 60V input max, 1.25V–57V output range, PSRR 80dB–65dB at 120Hz, TO-204AA (TO-3) through-hole package, 0°C–125°C operating temperature.","salesMarkdown":"## 60V input ceiling — the high-voltage LM317 variant The LM317HVK STEEL is the high-voltage member of the LM317 adjustable regulator family, rated for a 60V maximum input — 20V higher than the standard 40V LM317. That extra headroom makes it the natural choice for 48V telecom rectifiers, industrial 48V–57V rails, and any linear supply where the unregulated input can crest above 40V. ## 1.5A output in a TO-3 — thermal reality Rated for 1.5A continuous output, the TO-3 steel package (TO-204AA) handles the thermal dissipation. The quiescent current is 12 mA typical — negligible for the load budget but worth noting in always-on bias supplies. With a 1.25V minimum output and adjustable up to 57V, the dropout voltage across the pass element sets the minimum input-output differential; at 1.5A the dropout is around 2.5V typical, so budget the input rail at least 3V above the desired output. ## PSRR and protection — clean rails under load PSRR runs 80 dB at 120 Hz and stays above 65 dB across the line-frequency band — good enough to knock down 100/120 Hz ripple from a rectified AC input before it reaches sensitive analog loads. Built-in over-current, over-temperature, and short-circuit protection mean the regulator folds back safely under a fault; no external crowbar or current-limit resistor needed. ## Package and mounting — through-hole TO-3 The TO-3 steel can (TO-204AA, supplier device package TO-3-2) is a two-lead through-hole package with the metal tab as the common ground/heat-sink path. It mounts to a chassis or external heat sink through the two mounting holes; the tab is electrically common with the output (pin 2 in the standard TO-3 pinout). The steel case is heavier than the aluminium TO-3 variants but offers better mechanical ruggedness in high-vibration environments.","metaTitle":"LM317HVK STEEL adjustable regulator, 60V input, 1.5A, TO-3","metaDescription":"Texas Instruments LM317HVK STEEL adjustable positive regulator: 60V max input, 1.5A output, PSRR 80dB–65dB at 120Hz, TO-3 package.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"Mfr":"Texas Instruments","PSRR":"80dB ~ 65dB (120Hz)","Series":"-","Package":"Bulk","Output Type":"Adjustable","Mounting Type":"Through Hole","Package / Case":"TO-204AA, TO-3","Product Status":"Active","lifecycle_stage":"eol_hot","Control Features":"-","Current - Output":"1.5A","Base Product Number":"LM317","Protection Features":"Over Current, Over Temperature, Short Circuit","Number of Regulators":"1","Output Configuration":"Positive","Operating Temperature":"0°C~125°C","Voltage - Input (Max)":"60V","Voltage Dropout (Max)":"-","Voltage - Output (Max)":"57V","Supplier Device Package":"TO-3-2","Current - Quiescent (Iq)":"12 mA","Voltage - Output (Min/Fixed)":"1.25V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$63.3138","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/b804089d725ec3992cc47100c4cb52d3.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM317HVK%20STEEL/alternatives.json"},"ai":{"faq":[{"question":"What is the output current of the LM317HVK STEEL?","answer":"Rated output current is 1.5A continuous. Actual deliverable current depends on the input-output differential and heat sinking — the TO-3 package's thermal resistance to ambient sets the practical limit."},{"question":"Does the LM317HVK STEEL have built-in protection?","answer":"Yes, it includes over-current, over-temperature, and short-circuit protection. The regulator folds back current and shuts down thermally under fault conditions without external protection components."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM317HVK-STEEL","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM317HVK-STEEL when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T18:03:28.771Z","lastPublished":"2026-07-22T18:03:28.771Z","indexable":true}}