{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM2931ADT50R","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"LM2931ADT50R","canonicalUrl":"https://icboms.com/stmicroelectronics/LM2931ADT50R","factsUrl":"https://icboms.com/api/mcp/products/LM2931ADT50R","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics LM2931ADT50R, positive fixed-output LDO regulator, 5V at 100mA, PSRR 75dB (120Hz), 0.6V max dropout, DPAK surface-mount package, -40°C to 125°C junction temperature range.","salesMarkdown":"## 5V fixed rail for noise-sensitive loads The LM2931ADT50R is a 5V fixed-output LDO from STMicroelectronics, delivering 100 mA continuous current with a maximum dropout of 0.6 V at full load. A single regulator in a positive output configuration, it includes current limit and thermal shutdown protection — no external enable pin, so the output is live whenever Vin is present. ## Dropout and headroom budget With a 0.6 V maximum dropout at 100 mA, the input must stay above 5.6 V to maintain regulation. The 26 V absolute maximum input gives plenty of margin for 12 V or 24 V industrial rails, but the quiescent current of 1 mA is worth noting for always-on battery applications — every microamp counts when the coin cell has to last.","metaTitle":"LM2931ADT50R – ST 5V 100mA LDO Regulator, DPAK, Active","metaDescription":"STMicroelectronics LM2931ADT50R: 5V fixed output, 100mA, PSRR 75dB at 120Hz, dropout 0.6V max. DPAK package, -40°C to 125°C. Active production.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"Mfr":"STMicroelectronics","PSRR":"75dB (120Hz)","Series":"-","Package":"Tape & Reel (TR) Cut Tape (CT)","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"TO-252-3, DPak (2 Leads + Tab), SC-63","Product Status":"Active","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","priceTiers":[{"qty":1,"price":"$1.33000","currency":"USD"},{"qty":10,"price":"$1.19000","currency":"USD"},{"qty":25,"price":"$1.12920","currency":"USD"},{"qty":100,"price":"$0.92760","currency":"USD"},{"qty":250,"price":"$0.86708","currency":"USD"},{"qty":500,"price":"$0.76626","currency":"USD"},{"qty":1000,"price":"$0.60494","currency":"USD"},{"qty":2500,"price":"$0.56461","currency":"USD"},{"qty":5000,"price":"$0.53638","currency":"USD"},{"qty":12500,"price":"$0.51622","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/d36d329ebe07b2117d1cff0e49ac76c9.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM2931ADT50R/alternatives.json"},"ai":{"faq":[{"question":"What is LM2931ADT50R's PSRR?","answer":"75 dB at 120 Hz, which is the typical ripple rejection at the rectified mains fundamental. This makes it suitable for post-rectifier filtering in analog or RF supplies."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/LM2931ADT50R","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/LM2931ADT50R 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}}