{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM2931AD50","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"LM2931AD50","canonicalUrl":"https://icboms.com/stmicroelectronics/LM2931AD50","factsUrl":"https://icboms.com/api/mcp/products/LM2931AD50","rawCanonicalId":null},"summary":{"shortDescription":"onsemi LM2931AD50, 5V fixed-output LDO regulator, 100 mA output, 0.6 V dropout max at 100 mA, 75 dB PSRR at 120 Hz, -40 to 125 °C, 8-SOIC package.","salesMarkdown":"## 5 V fixed LDO with 75 dB PSRR — the analog-rail regulator The onsemi LM2931AD50 is a 5 V fixed-output low-dropout regulator rated for 100 mA continuous output. The 0.6 V max dropout at full load means the input can sit as low as 5.6 V and still hold regulation, useful in 6 V or 9 V battery-powered designs where every millivolt of headroom costs runtime. ## Industrial temperature range and protection set Rated for -40 to 125 °C junction temperature, the LM2931AD50 can live under the hood or on an outdoor industrial control board without derating the output current. On-chip current limit and thermal shutdown handle a sustained overload or a shorted output — the die pulls back before the plastic package reaches its glass-transition point. Quiescent current is 1 mA typical, rising to 30 mA max under fault; the 1 mA Iq matters for always-on battery circuits where every microamp is budgeted. ## Obsolete — sourcing through independent distribution The LM2931AD50 carries an obsolete lifecycle status. No official successor is listed on the record. No stock-holding claim; each lot is verified before shipment. ## 8-SOIC footprint — reflow and placement notes The part ships in an 8-SOIC package (0.154-inch body width, 3.90 mm) on tube. The standard SOIC-8 footprint is a mature, low-risk profile for pick-and-place — no exposed pad, no fine-pitch concerns.","metaTitle":"LM2931AD50 LDO Regulator, 5V Fixed, 100 mA, 8-SOIC, Obsolete","metaDescription":"LM2931AD50 5V fixed-output LDO, 100 mA, 75 dB PSRR at 120 Hz, -40 to 125 °C, 8-SOIC.","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)","Series":"-","Package":"Tube","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","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":"8-SOIC","Current - Quiescent (Iq)":"1 mA","Voltage - Output (Min/Fixed)":"5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.1100","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/d36d329ebe07b2117d1cff0e49ac76c9.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is LM2931AD50 obsolete?","answer":"Yes, the LM2931AD50 is listed as obsolete. No direct replacement is recorded."},{"question":"What is the PSRR of LM2931AD50?","answer":"The PSRR is 75 dB at 120 Hz, which gives strong rejection of 100/120 Hz ripple from a rectified mains supply or a switching pre-regulator."},{"question":"What package does LM2931AD50 come in?","answer":"The standard SOIC-8 footprint is used."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/LM2931AD50","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/LM2931AD50 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T17:24:43.959Z","lastPublished":"2026-07-16T17:24:43.959Z","indexable":true}}