{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM2940IMP-10/NOPB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM2940IMP-10-NOPB","canonicalUrl":"https://icboms.com/texas-instruments/LM2940IMP-10-NOPB","factsUrl":"https://icboms.com/api/mcp/products/LM2940IMP-10%2FNOPB","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM2940IMP-10/NOPB LDO regulator, fixed 10V output, 1A, 63dB PSRR at 120Hz, 1V dropout at 1A, SOT-223-4, -40°C to 85°C, ROHS3.","salesMarkdown":"## Fixed 10V rail, 1A continuous, SOT-223-4 The LM2940IMP-10/NOPB is a fixed 10V positive-output LDO regulator from Texas Instruments, rated for 1A continuous output current. It comes in a SOT-223-4 surface-mount package (TO-261-4 equivalent), which means the center tab is the output and must be soldered to a copper pad for thermal dissipation — the dropout is only 1V max at full load, so the power dissipated as heat is manageable for a 1A part in this footprint. Input voltage range goes up to 26V, and the fixed 10V output is stable with a 10 µF output capacitor (typical). The 63dB PSRR at 120Hz means it knocks down ripple from a rectified 50/60 Hz supply by about 1000× — useful if the rail feeding it comes from a transformer + bridge rectifier or a noisy DC-DC converter. ## Dropout, protection, and temp range The 1V dropout at 1A sets the minimum input voltage at 11V for a clean 10V output. If the input sags below that, the output follows — no headroom, no regulation. The quiescent current is 10 mA typical, which is not ultra-low but acceptable for always-on rails where the load current is tens to hundreds of mA. Built-in protection covers over-current, over-temperature, reverse polarity, and short circuit — the part shuts down before the die hits 160°C or the output current exceeds about 1.5A.","metaTitle":"TI LM2940IMP-10/NOPB LDO Regulator, 10V Fixed, 1A, SOT-223-4","metaDescription":"Texas Instruments LM2940IMP-10/NOPB, 10V fixed output LDO, 1A, 63dB PSRR at 120Hz, SOT-223-4. Active production, ROHS3 compliant. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Mfr":"Texas Instruments","PSRR":"63dB (120Hz)","Series":"-","Package":"Tape & Reel (TR); Cut Tape (CT)","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":"$2.4000","priceTiers":[{"qty":1,"price":"$2.40000","currency":"USD"},{"qty":10,"price":"$2.15500","currency":"USD"},{"qty":25,"price":"$2.03240","currency":"USD"},{"qty":100,"price":"$1.73170","currency":"USD"},{"qty":250,"price":"$1.62604","currency":"USD"},{"qty":500,"price":"$1.42278","currency":"USD"},{"qty":1000,"price":"$1.17888","currency":"USD"},{"qty":2000,"price":"$1.15050","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/f1c4256f4019947c4206f2126daf8930.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM2940IMP-10%2FNOPB/alternatives.json"},"ai":{"faq":[{"question":"What is the PSRR of the LM2940IMP-10/NOPB and why does it matter?","answer":"The PSRR is 63 dB at 120 Hz. That means ripple on the input at 120 Hz (the second harmonic of a 60 Hz mains rectifier) is attenuated by a factor of about 1400. If your input rail has 1 V peak-to-peak ripple, the output sees less than 1 mV — clean enough for most analog loads."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM2940IMP-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/LM2940IMP-10-NOPB when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}