{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM2940S-10","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM2940S-10","canonicalUrl":"https://icboms.com/texas-instruments/LM2940S-10","factsUrl":"https://icboms.com/api/mcp/products/LM2940S-10","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM2940S-10, 1A fixed 10V positive LDO voltage regulator, 63dB PSRR at 120Hz, 26V max input, 1V dropout at 1A, -40°C to 125°C, TO-263-4 (D²Pak), surface mount.","salesMarkdown":"## 1 A fixed 10 V LDO — what it delivers It accepts an input up to 26 V and delivers the regulated 10 V rail with a maximum dropout of 1 V at full load. ## 63 dB PSRR — why it matters for the rail The 63 dB PSRR at 120 Hz means the regulator attenuates full-wave-rectified ripple by a factor of roughly 1400. For a 10 V rail feeding an op-amp or ADC reference, that rejection keeps the ripple off the signal ground. On-chip protection covers over-current, over-temperature, reverse polarity, and short-circuit conditions — the regulator survives a miswired bench or a load fault without external clamp diodes. The LM2940S-10 carries a Not Recommended for New Designs (NRND) status. It is not yet discontinued, but Texas Instruments has flagged it for eventual phase-out. New designs should migrate to the recommended successor within the LM2940 family — the exact pin-compatible replacement is the LM2940S-10/NOPB, which shares the same footprint, output voltage, and current rating.","metaTitle":"LM2940S-10 1A Fixed 10V LDO Regulator, TO-263, NRND","metaDescription":"LM2940S-10: 1A fixed 10V output LDO, 63dB PSRR at 120Hz, -40°C to 125°C, TO-263-4.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"NRND","categoryPath":["Analog & Data Acquisition"],"specifications":{"Mfr":"Texas Instruments","PSRR":"63dB (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)":"10V"}},"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-10/alternatives.json"},"ai":{"faq":[{"question":"Is the LM2940S-10 obsolete or end-of-life?","answer":"The LM2940S-10 carries a Not Recommended for New Designs (NRND) status — it is not yet discontinued, but Texas Instruments has flagged it for eventual phase-out. Existing production runs can still be supported, but new designs should use the recommended replacement."},{"question":"What is the recommended replacement for the LM2940S-10?","answer":"The pin-compatible replacement is the LM2940S-10/NOPB. It shares the same TO-263-4 package, fixed 10 V output, and 1 A current rating, and is fully recommended for new designs."},{"question":"Is the LM2940S-10 compatible with my existing LM2940 design?","answer":"Yes — the LM2940S-10 is a standard member of the LM2940 family. It is pin-compatible with other fixed-output LM2940 variants in the same TO-263 package. The base product number LM2940 covers the entire series, so a board laid out for any TO-263 LM2940 will accept this part."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM2940S-10","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-10 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}}