{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LD1117V25","brand":"STMicroelectronics","brandSlug":"stmicroelectronics","productSlug":"LD1117V25","canonicalUrl":"https://icboms.com/stmicroelectronics/LD1117V25","factsUrl":"https://icboms.com/api/mcp/products/LD1117V25","rawCanonicalId":null},"summary":{"shortDescription":"STMicroelectronics LD1117V25, fixed 2.5V positive LDO regulator, 800mA output, 1.2V dropout max, 75dB PSRR at 120Hz, TO-220-3 through-hole package, 0°C to 125°C operating range.","salesMarkdown":"## Fixed 2.5 V rail regulator in TO-220 The STMicroelectronics LD1117V25 is a single-output positive fixed LDO regulator delivering a regulated 2.5 V rail from an input up to 15 V. ## 75 dB PSRR and protection features PSRR is specified at 75 dB at 120 Hz — this gives meaningful ripple rejection on the output rail when the input comes from a rectified line-frequency source or a switching preregulator. The regulator includes over-current and over-temperature protection, so a momentary load spike or a failed downstream component shuts it down rather than letting it burn open. ## Through-hole mounting and thermal path The TO-220-3 package (supplier device package TO-220) is a through-hole part with a metal tab that conducts heat to the PCB or a heatsink. The 10 mA quiescent current is typical for this class of LDO — it is not a low-Iq part for battery operation, but for a fixed industrial or appliance rail the quiescent draw is negligible against the load.","metaTitle":"ST LD1117V25 fixed 2.5V LDO regulator, 800mA, TO-220","metaDescription":"ST LD1117V25 positive fixed 2.5V LDO regulator, 800mA output, 75dB PSRR, 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":"0°C~125°C","Voltage - Input (Max)":"15V","Voltage Dropout (Max)":"1.2V @ 800mA","Voltage - Output (Max)":"-","Supplier Device Package":"TO-220","Current - Quiescent (Iq)":"10 mA","Voltage - Output (Min/Fixed)":"2.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.8700","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/494bb92f4effb270dec91ee8a399de6d.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LD1117V25/alternatives.json"},"ai":{"faq":[{"question":"Is LD1117V25 available in tube packaging?","answer":"Yes, the LD1117V25 is listed with a Tube package option."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/stmicroelectronics/LD1117V25","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/stmicroelectronics/LD1117V25 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}}