{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LD1117V33C-DG","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"LD1117V33C-DG","canonicalUrl":"https://icboms.com/stmicroelectronics/LD1117V33C-DG","factsUrl":"https://icboms.com/api/mcp/products/LD1117V33C-DG","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics LD1117V33C-DG, positive fixed LDO, 3.3V output, 800mA, 1.3V dropout max, 75dB PSRR at 120Hz, -40°C to 125°C, TO-220-3, through hole.","salesMarkdown":"## 3.3V fixed output, 800mA capacity This is a single-output positive fixed LDO regulator delivering 3.3V at up to 800mA. The fixed output means no external resistor divider is needed — just the input and output capacitors. The 1.3V maximum dropout at full load sets the minimum input-to-output headroom: for a clean 3.3V rail, the input must stay above 4.6V under load. ## 75dB PSRR and protection features The 75dB power-supply rejection ratio at 120Hz means this LDO attenuates 120Hz ripple from a rectified mains supply by a factor of about 5600 — useful for powering analog circuits, sensor front-ends, or audio stages where line-frequency hum must stay off the rail. Built-in over-current and over-temperature protection let the part survive a sustained short or thermal overload without external foldback circuitry.","metaTitle":"STMicroelectronics LD1117V33C-DG LDO Regulator, 3.3V Fixed","metaDescription":"ST LD1117V33C-DG positive fixed LDO, 3.3V output, 800mA, 1.3V dropout max, 75dB PSRR at 120Hz, -40°C to 125°C, TO-220-3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Analog & Data Acquisition"],"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":"800mA","Base Product Number":"LD1117","Protection Features":"Over Current, Over Temperature","Number of Regulators":"1","Output Configuration":"Positive","Operating Temperature":"-40°C ~ 125°C","Voltage - Input (Max)":"15V","Voltage Dropout (Max)":"1.3V @ 800mA","Voltage - Output (Max)":"-","Supplier Device Package":"TO-220","Current - Quiescent (Iq)":"10 mA","Voltage - Output (Min/Fixed)":"3.3V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.8000","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/494bb92f4effb270dec91ee8a399de6d.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LD1117V33C-DG/alternatives.json"},"ai":{"faq":[{"question":"What is the maximum current output of LD1117V33C-DG?","answer":"The maximum continuous output current is 800mA."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/LD1117V33C-DG","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/LD1117V33C-DG 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}}