{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM350AT","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM350AT","canonicalUrl":"https://icboms.com/texas-instruments/LM350AT","factsUrl":"https://icboms.com/api/mcp/products/LM350AT","rawCanonicalId":null},"summary":{"shortDescription":"LM350AT, adjustable positive voltage regulator, 3A output, 1.25V to 33V range, PSRR 86dB~65dB at 120Hz, TO-220-3 through-hole package, -40°C to 125°C operating temperature.","salesMarkdown":"## NRND — plan the last-time buy now This is not an immediate discontinuation notice, but it signals that the manufacturer has stopped active design-in support and will eventually issue a last-time-buy (LTB) window. For existing BOM lines, secure sufficient lifetime buy stock or qualify a replacement before the LTB closes. ## 3 A adjustable output with 86 dB PSRR floor The LM350AT is a positive adjustable voltage regulator delivering up to 3 A continuous output. The output voltage is set by two external resistors from a 1.25 V reference up to 33 V maximum, with a 35 V maximum input. The power supply rejection ratio (PSRR) is specified at 86 dB typical at 120 Hz, rolling off to 65 dB at the same frequency — this tells a designer that mains-frequency ripple on the input is attenuated by a factor of roughly 20,000 at the output, which is the primary reason to choose this part over a switching regulator in noise-sensitive analog rails. The single regulator channel is configured for positive output only. Built-in protection covers over-current, over-temperature, and short-circuit conditions — no external clamp diodes are needed for the basic fault cases. ## Industrial temperature range in a TO-220-3 The TO-220-3 through-hole package (supplier device package same as case) requires a heatsink for sustained 3 A operation — the tab is electrically common with the output pin, so the thermal interface pad must be electrically isolated or the heatsink must float. ## Sourcing posture for NRND parts No stock-holding claim is made; the part is procured per the BOM quantity and delivery schedule specified in the RFQ.","metaTitle":"LM350AT Adjustable Regulator, 3A, TO-220-3, NRND","metaDescription":"LM350AT adjustable positive voltage regulator, 3A output, 1.25V to 33V range, PSRR 86dB~65dB at 120Hz, TO-220-3, -40°C to 125°C.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"NRND","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"Mfr":"Texas Instruments","PSRR":"86dB ~ 65dB (120Hz)","Series":"-","Package":"Tube","Output Type":"Adjustable","Mounting Type":"Through Hole","Package / Case":"TO-220-3","Product Status":"Not For New Designs","lifecycle_stage":"eol_hot","Control Features":"-","Current - Output":"3A","Base Product Number":"LM350","Protection Features":"Over Current, Over Temperature, Short Circuit","Number of Regulators":"1","Output Configuration":"Positive","Operating Temperature":"-40°C~125°C","Voltage - Input (Max)":"35V","Voltage Dropout (Max)":"-","Voltage - Output (Max)":"33V","Supplier Device Package":"TO-220-3","Voltage - Output (Min/Fixed)":"1.25V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$5.0600","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/826c2ec873d00a45c2e50bb5b7b85357.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM350AT/alternatives.json"},"ai":{"faq":[{"question":"Is LM350AT obsolete or still available?","answer":"It is not yet discontinued, but the manufacturer has flagged it for end-of-life planning. It remains available through independent distribution for existing BOM lines, but a last-time-buy window is expected. Plan a lifetime buy or qualify a replacement."},{"question":"LM350AT vs LM317: what are the differences?","answer":"The LM350AT is a higher-current sibling of the LM317. Both are adjustable positive regulators with the same 1.25 V reference and similar PSRR characteristics. The LM350AT is rated for 3 A output versus the LM317's 1.5 A, and it comes in the same TO-220-3 package. The pinout is identical, so the LM350AT is a drop-in replacement on boards originally designed for an LM317 where the load current exceeds 1.5 A. The trade-off is higher dissipation at the same dropout voltage — the heatsink must be sized for the 3 A capability."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM350AT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM350AT 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}}