{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM317AH","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM317AH","canonicalUrl":"https://icboms.com/texas-instruments/LM317AH","factsUrl":"https://icboms.com/api/mcp/products/LM317AH","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM317AH, adjustable positive linear voltage regulator, 1.5A output, 40V max input, TO-205AD (TO-39-3) metal can package, through-hole mount.","salesMarkdown":"The LM317AH delivers up to 1.5A continuous output with a maximum input of 40V — enough for a 5V or 12V bus derived from an unregulated supply up to 40V. The adjustable output spans 1.25V to 37V, so you set the rail with two resistors; no fixed-voltage variant needed. ## Ripple rejection and protection — bench-level detail PSRR runs 80dB to 65dB at 120Hz — that is solid ripple attenuation for an audio or instrumentation supply, though it rolls off at higher frequencies. Built-in over-current, over-temperature, and short-circuit protection mean the regulator survives a momentary output short without external crowbar circuitry. The TO-205AD metal can is a through-hole package — field-swappable with basic tools, no hot-air station needed.","metaTitle":"LM317AH Adjustable Positive Voltage Regulator 1.5A TO-39-3","metaDescription":"Texas Instruments LM317AH adjustable linear regulator, 1.5A output, 40V max input, TO-205AD metal can. Active production, through-hole mount. Request quote.","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-205AD, TO-39-3 Metal Can","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":"-40°C~125°C","Voltage - Input (Max)":"40V","Voltage Dropout (Max)":"-","Voltage - Output (Max)":"37V","Supplier Device Package":"TO-3","Current - Quiescent (Iq)":"10 mA","Voltage - Output (Min/Fixed)":"1.25V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$9.2500","priceTiers":[{"qty":33,"price":"$9.25000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/3be8c6b0321d6b1fc0d06567842c70e1.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM317AH/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM317AH","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM317AH when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}