{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM2940S-5.0","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM2940S-5.0","canonicalUrl":"https://icboms.com/texas-instruments/LM2940S-5.0","factsUrl":"https://icboms.com/api/mcp/products/LM2940S-5.0","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM2940S-5.0, fixed 5V output LDO regulator, 1A output current, 1V max dropout at 1A, PSRR 64dB at 120Hz, TO-263-3 DDPAK surface-mount package, -40°C to 125°C operating range.","salesMarkdown":"## Dropout and protection — 1V max at full load The LM2940S-5.0: Maximum dropout voltage is 1V at 1A output current, so the input rail needs at least 6V to maintain regulation at full load. The quiescent current sits at 10 mA typical, with a 15 mA supply maximum. On-chip protection covers over current, over temperature, reverse polarity, and short circuit — a complete set for an automotive or industrial 5V bus without external clamp diodes. ## NRND — sourcing for existing BOM lines It remains available through independent distribution for production replenishment and legacy BOM support, but new designs should evaluate current-production alternatives. ## TO-263-3 DDPAK — thermal and footprint Supplied in a TO-263-3 DDPAK surface-mount package (3 leads plus exposed tab).","metaTitle":"LM2940S-5.0 5V 1A LDO Regulator, TO-263, NRND","metaDescription":"LM2940S-5.0 fixed 5V output LDO, 1A, dropout 1V max, PSRR 64dB at 120Hz, TO-263-3 package.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"NRND","categoryPath":["Analog & Data Acquisition"],"specifications":{"Mfr":"Texas Instruments","PSRR":"64dB (120Hz)","Series":"-","Package":"Tube","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"TO-263-4, D²Pak (3 Leads + Tab), TO-263AA","Product Status":"Not For New Designs","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":"DDPAK/TO-263-3","Current - Quiescent (Iq)":"10 mA","Voltage - Output (Min/Fixed)":"5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.2300","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/f1c4256f4019947c4206f2126daf8930.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM2940S-5.0/alternatives.json"},"ai":{"faq":[{"question":"Is LM2940S-5.0 obsolete or still available?","answer":"It is not fully discontinued but is no longer recommended for new designs. It remains available through independent distribution for existing production BOM lines."},{"question":"Can LM2940S-5.0 be used to replace other 5V regulators like LM7805?","answer":"The LM2940S-5.0 is a low-dropout regulator (1V max at 1A) versus the LM7805 which typically requires 2V headroom. The LM2940S-5.0 also includes reverse polarity protection the 7805 lacks. Pinout differs — confirm the PCB footprint matches the TO-263-3 before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM2940S-5.0","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM2940S-5.0 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}}