{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM2931CMX/NOPB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM2931CMX-NOPB","canonicalUrl":"https://icboms.com/texas-instruments/LM2931CMX-NOPB","factsUrl":"https://icboms.com/api/mcp/products/LM2931CMX%2FNOPB","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM2931CMX/NOPB, positive adjustable LDO regulator, 100 mA output, 26 V max input, 0.3 V dropout, 55 dB PSRR at 120 Hz, 1 mA quiescent current, -40 to 85 °C, 8-SOIC.","salesMarkdown":"The LM2931CMX/NOPB is a positive adjustable LDO regulator from Texas Instruments, delivering up to 100 mA with a maximum dropout of 0.3 V at full load. Its 55 dB PSRR at 120 Hz means the output attenuates mains-frequency ripple by a factor of about 560 — relevant for powering analog front-ends or sensor supplies in industrial control and automotive body electronics where the input rail carries alternator or switching-regulator hash. ## 26 V input ceiling and adjustable output Rated for input voltages up to 26 V, this part fits 24 V nominal industrial buses and automotive 12 V systems with load-dump transients clamped below the maximum. A single regulator in an SOIC-8 footprint covers a wide range of post-regulation voltages without swapping the BOM. ## Protection set that simplifies the board On-chip protection includes over-temperature shutdown, reverse polarity protection, and short-circuit current limiting. These three features eliminate the need for external clamp diodes, a crowbar circuit, or a separate thermal switch in most designs — the regulator handles fault conditions internally. Listed as active in production.","metaTitle":"LM2931CMX/NOPB LDO Regulator, 100 mA, 26 V Input, 55 dB PSRR","metaDescription":"Texas Instruments LM2931CMX/NOPB positive adjustable LDO, 100 mA output, 0.3 V dropout, 55 dB PSRR at 120 Hz. Active lifecycle, surface-mount SOIC-8.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Mfr":"Texas Instruments","PSRR":"55dB (120Hz)","Series":"-","Package":"Tape & Reel (TR)","Output Type":"Adjustable","Mounting Type":"Surface Mount","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","Product Status":"Active","lifecycle_stage":"eol_hot","Control Features":"-","Current - Output":"100mA","Base Product Number":"LM2931","Protection Features":"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)":"0.3V @ 100mA","Current - Supply (Max)":"15 mA","Voltage - Output (Max)":"24V","Supplier Device Package":"8-SOIC","Current - Quiescent (Iq)":"1 mA","Voltage - Output (Min/Fixed)":"3V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.4185","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/bc5f9d253d87c0f5bb975d3751d9071d.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM2931CMX%2FNOPB/alternatives.json"},"ai":{"faq":[{"question":"Can LM2931CMX/NOPB replace LM2931CT?","answer":"The LM2931CMX/NOPB is the surface-mount SOIC-8 variant of the LM2931 family, while the LM2931CT is a through-hole TO-220 package. Electrically they share the same 100 mA output, 26 V input max, and 0.3 V dropout, but the package and footprint differ. Board-level rework would require a layout change."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM2931CMX-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/LM2931CMX-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}}