{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM2931ADT50RY","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"LM2931ADT50RY","canonicalUrl":"https://icboms.com/stmicroelectronics/LM2931ADT50RY","factsUrl":"https://icboms.com/api/mcp/products/LM2931ADT50RY","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics LM2931ADT50RY, Automotive LDO Regulator, Positive Fixed 5V, 100mA, 75dB PSRR (120Hz), AEC-Q100, DPAK-3, -40°C to 125°C.","salesMarkdown":"## Obsolete — sourcing the LM2931ADT50RY The LM2931ADT50RY is listed as obsolete. ## 5 V fixed rail, 100 mA — what it drives This is a single-output positive LDO delivering a fixed 5 V at up to 100 mA. The 0.6 V maximum dropout at full load means it holds regulation with an input as low as 5.6 V — useful in automotive 12 V or 24 V systems where the battery can sag during cranking. Quiescent current is 1 mA typical, with a maximum supply current of 30 mA. The 75 dB PSRR at 120 Hz is the spec that matters for alternator whine rejection — it filters the 120 Hz ripple from a full-wave rectified alternator output before it reaches sensitive loads like sensor supplies or microcontroller analogue rails. ## Automotive-grade build The DPAK (TO-252-3) surface-mount package with exposed tab helps conduct heat to the board copper pour. Protection features include current limit and thermal shutdown, which guard against output shorts and overloads in the harsh automotive electrical environment.","metaTitle":"LM2931ADT50RY Automotive LDO, 5V 100mA, AEC-Q100, PSRR 75dB","metaDescription":"STMicroelectronics LM2931ADT50RY positive fixed 5V LDO, 100mA output, 75dB PSRR at 120Hz. AEC-Q100 qualified, DPAK package.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"Mfr":"STMicroelectronics","PSRR":"75dB (120Hz)","Grade":"Automotive","Series":"-","Package":"Tape & Reel (TR) Cut Tape (CT)","Output Type":"Fixed","Mounting Type":"Surface Mount","Qualification":"AEC-Q100","Package / Case":"TO-252-3, DPAK (2 Leads + Tab), SC-63","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Control Features":"-","Current - Output":"100mA","Base Product Number":"LM2931","Protection Features":"Current Limit, Thermal Shutdown","Number of Regulators":"1","Output Configuration":"Positive","Operating Temperature":"-40°C ~ 125°C (TJ)","Voltage - Input (Max)":"26V","Voltage Dropout (Max)":"0.6V @ 100mA","Current - Supply (Max)":"30 mA","Voltage - Output (Max)":"-","Supplier Device Package":"DPAK","Current - Quiescent (Iq)":"1 mA","Voltage - Output (Min/Fixed)":"5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.3300","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/d36d329ebe07b2117d1cff0e49ac76c9.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is LM2931ADT50RY AEC-Q100 qualified?","answer":"Yes, the LM2931ADT50RY carries AEC-Q100 qualification, making it suitable for automotive applications that require the stress-tested reliability of that grade."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/LM2931ADT50RY","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/LM2931ADT50RY when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T17:37:52.169Z","lastPublished":"2026-07-16T17:37:52.169Z","indexable":true}}