{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM2940IMPX-10/NOPB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM2940IMPX-10-NOPB","canonicalUrl":"https://icboms.com/texas-instruments/LM2940IMPX-10-NOPB","factsUrl":"https://icboms.com/api/mcp/products/LM2940IMPX-10%2FNOPB","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM2940IMPX-10/NOPB, fixed positive 10V LDO voltage regulator, 1A output, 63dB PSRR at 120Hz, SOT-223-4, -40°C to 85°C.","salesMarkdown":"## Fixed 10V rail — what the dropout and PSRR tell you The LM2940IMPX-10/NOPB is a fixed 10V positive LDO from TI's LM2940 family, delivering 1A continuous with a maximum dropout of 1V at full load. That 1V headroom means the input rail must stay above 11V (plus ripple) to maintain regulation — a common gotcha when reusing a 12V bus that sags under load. PSRR is 63dB at 120Hz, which is the 2x line-frequency ripple rejection figure. For a 12V input with 100 mVpp of 120Hz ripple, the output sees roughly 70 µVpp — clean enough for most analog front-ends, but if you need better rejection above 1 kHz, this part's PSRR rolls off and a post-filter stage may be needed. ## Protection set and quiescent current Protection covers over-current, over-temperature, reverse polarity, and short circuit — all on-chip. That saves a Schottky on the input and a PTC on the output in many designs. Quiescent current is 10 mA typical; supply max is 15 mA, so the regulator's own consumption is non-trivial in battery-powered gear but fine for a 10V rail in industrial or automotive-adjacent systems.","metaTitle":"LM2940IMPX-10/NOPB 10V Fixed Output LDO Regulator, 1A","metaDescription":"Texas Instruments LM2940IMPX-10/NOPB — fixed 10V output LDO, 1A, 63dB PSRR at 120Hz, SOT-223-4, active production.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Mfr":"Texas Instruments","PSRR":"63dB (120Hz)","Series":"-","Package":"Tape & Reel (TR)","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"TO-261-4, TO-261AA","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~85°C","Voltage - Input (Max)":"26V","Voltage Dropout (Max)":"1V @ 1A","Current - Supply (Max)":"15 mA","Voltage - Output (Max)":"-","Supplier Device Package":"SOT-223-4","Current - Quiescent (Iq)":"10 mA","Voltage - Output (Min/Fixed)":"10V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.9585","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/f1c4256f4019947c4206f2126daf8930.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM2940IMPX-10%2FNOPB/alternatives.json"},"ai":{"faq":[{"question":"What is the maximum output current of LM2940IMPX-10/NOPB?","answer":"The rated continuous output current is 1A. Maximum dropout at that current is 1V."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM2940IMPX-10-NOPB","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM2940IMPX-10-NOPB 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}}