{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM2940T-5.0/LF08","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM2940T-5.0-LF08","canonicalUrl":"https://icboms.com/texas-instruments/LM2940T-5.0-LF08","factsUrl":"https://icboms.com/api/mcp/products/LM2940T-5.0%2FLF08","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM2940T-5.0/LF08, 1A fixed 5V LDO voltage regulator, positive output, 1V dropout at 1A, 64dB PSRR at 120Hz, -40°C to 125°C, TO-220-3 formed leads package.","salesMarkdown":"## 1A fixed 5V rail — the dropout headroom decision The LM2940T-5.0/LF08 is a fixed 5V low-dropout regulator from the LM2940 family, delivering 1A continuous output. The 1V maximum dropout at full load means the input rail must stay above 6V to maintain regulation — a 5.5V input would leave only 0.5V headroom, which is inside the dropout region. For a 5V logic or sensor supply derived from a 7.5V to 12V intermediate bus, this part fits cleanly without the thermal penalty of a standard 78xx linear. ## Protection suite and quiescent budget On-chip protection covers over-current, over-temperature, reverse polarity, and short-circuit — no external clamp diode needed for reverse-battery scenarios common in automotive or battery-backed rails. PSRR is 64 dB at 120 Hz, which attenuates full-wave rectifier ripple by a factor of roughly 1600 — adequate for clean analog supplies in sensor or audio front-ends, though higher-frequency rejection drops off above a few kHz. ## Package and temperature grade — industrial build fit","metaTitle":"LM2940T-5.0/LF08 1A Fixed 5V LDO Regulator, TO-220-3","metaDescription":"LM2940T-5.0/LF08 1A low-dropout regulator, fixed 5V output, 1V dropout at 1A, 64dB PSRR at 120Hz, -40°C to 125°C, TO-220-3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Mfr":"Texas Instruments","PSRR":"64dB (120Hz)","Series":"-","Package":"Tube","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"TO-220-3 Formed Leads","Product Status":"Active","lifecycle_stage":"eol_hot","Control Features":"-","Current - Output":"1A","Base Product Number":"LM2940","Protection Features":"Over Current, Over Temperature, Reverse Polarity, Short Circuit","Number of Regulators":"1","Output Configuration":"Positive","Operating Temperature":"-40°C~125°C","Voltage - Input (Max)":"26V","Voltage Dropout (Max)":"1V @ 1A","Current - Supply (Max)":"15 mA","Voltage - Output (Max)":"-","Supplier Device Package":"TO-220-3","Current - Quiescent (Iq)":"10 mA","Voltage - Output (Min/Fixed)":"5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.0000","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/f1c4256f4019947c4206f2126daf8930.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM2940T-5.0%2FLF08/alternatives.json"},"ai":{"faq":[{"question":"What is the output current of LM2940T-5.0/LF08?","answer":"The LM2940T-5.0/LF08 is rated for 1A continuous output current."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM2940T-5.0-LF08","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM2940T-5.0-LF08 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}}