{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM2931AV50","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"LM2931AV50","canonicalUrl":"https://icboms.com/stmicroelectronics/LM2931AV50","factsUrl":"https://icboms.com/api/mcp/products/LM2931AV50","rawCanonicalId":null},"summary":{"shortDescription":"ON Semiconductor LM2931AV50 — 5V fixed-output LDO, 100 mA, TO-220-3 through-hole, 75 dB PSRR at 120 Hz, dropout 0.6 V max, -40 to 125 °C.","salesMarkdown":"## 5 V fixed LDO in a TO-220 — what it delivers The LM2931AV50 is a 5 V fixed-output low-dropout regulator from ON Semiconductor, delivering up to 100 mA in a TO-220-3 through-hole package. It is a single positive-output LDO with a maximum input voltage of 26 V and a dropout voltage of 0.6 V at full load. The 75 dB PSRR at 120 Hz makes it a solid choice for cleaning up a rectified DC rail feeding noise-sensitive analog circuits — think instrumentation amplifiers, sensor front-ends, or reference supplies where line-frequency ripple needs suppressing. ON Semiconductor has marked the LM2931AV50 as obsolete. For a production BOM, this means any future replenishment depends on existing inventory in the independent distribution channel. ## Key parametrics for the BOM fit The quiescent current is 1 mA typical, with a maximum supply current of 30 mA — relevant for always-on or battery-backed rails where standby draw matters. Protection features include current limit and thermal shutdown, so the part can handle brief overloads or a shorted output without immediate failure. The TO-220 package with its exposed metal tab can dissipate several watts with a heatsink — useful if the load is continuous near the 100 mA limit and the input-output differential is high.","metaTitle":"LM2931AV50 5V Fixed LDO, TO-220, 100 mA, 75 dB PSRR","metaDescription":"LM2931AV50 5V fixed-output LDO in TO-220-3. 100 mA, 75 dB PSRR at 120 Hz, dropout 0.6 V max.","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":"Through Hole","Package / Case":"TO-220-3","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":"TO-220","Current - Quiescent (Iq)":"1 mA","Voltage - Output (Min/Fixed)":"5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.4000","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/d36d329ebe07b2117d1cff0e49ac76c9.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the PSRR of the LM2931AV50?","answer":"The PSRR is 75 dB at 120 Hz, which is the line-frequency ripple rejection figure. This is a strong spec for cleaning up a full-wave-rectified supply feeding analog or precision loads."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/LM2931AV50","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/LM2931AV50 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-16T18:05:04.731Z","lastPublished":"2026-07-16T18:05:04.731Z","indexable":true}}