{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM2931CM","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM2931CM","canonicalUrl":"https://icboms.com/texas-instruments/LM2931CM","factsUrl":"https://icboms.com/api/mcp/products/LM2931CM","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM2931CM, adjustable positive LDO regulator, 100 mA output, 55 dB PSRR at 120 Hz, 0.3 V dropout max, 8-SOIC package, -40°C to 85°C.","salesMarkdown":"## Adjustable LDO with 55 dB ripple rejection Its 55 dB PSRR at 120 Hz means it knocks down mains-frequency ripple by a factor of about 560 — useful for powering analog front-ends or sensor supplies where clean DC matters. ## Dropout and output range — the BOM-fit numbers Maximum dropout is 0.3 V at 100 mA load, so the input needs to sit only 300 mV above the set output voltage to stay in regulation. Quiescent current is 1 mA typical, rising to 15 mA max under heavy load — low enough for always-on rails in battery-backed equipment. Built-in protection covers over-temperature, reverse polarity on the input, and output short circuits — three failure modes common in automotive and industrial systems. No official successor is listed on the record — the closest functional match is the LM2931 series in the same SOIC-8 footprint, but confirm the output voltage range and dropout match your rail budget.","metaTitle":"LM2931CM LDO Regulator, Adjustable 3-24V, 100mA, 55dB PSRR","metaDescription":"LM2931CM adjustable LDO regulator, 100mA output, 55dB PSRR at 120Hz, 0.3V dropout.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"NRND","categoryPath":["Analog & Data Acquisition"],"specifications":{"Mfr":"Texas Instruments","PSRR":"55dB (120Hz)","Series":"-","Package":"Bulk","Output Type":"Adjustable","Mounting Type":"Surface Mount","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","Product Status":"Not For New Designs","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":"$1.5400","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/bc5f9d253d87c0f5bb975d3751d9071d.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM2931CM/alternatives.json"},"ai":{"faq":[{"question":"Is LM2931CM obsolete?","answer":"Existing production can still source it while stock lasts."},{"question":"Does LM2931CM require external components?","answer":"Yes — as an adjustable regulator it needs an external resistor divider to set the output voltage, plus input and output capacitors for stability. The datasheet provides recommended values."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM2931CM","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM2931CM 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}}