{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM1117DT-2.85/NOPB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM1117DT-2.85-NOPB","canonicalUrl":"https://icboms.com/texas-instruments/LM1117DT-2.85-NOPB","factsUrl":"https://icboms.com/api/mcp/products/LM1117DT-2.85%2FNOPB","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM1117DT-2.85/NOPB, positive fixed-output LDO regulator, 2.85V, 800mA, dropout 1.2V max at full load, PSRR 75dB at 120Hz, TO-252-3 (DPak) package, 0°C to 125°C operating range.","salesMarkdown":"## Dropout and thermal — the real-world constraints Maximum dropout is 1.2 V at 800 mA output. That means with a 2.85 V rail the input must stay above 4.05 V worst-case — a 5 V rail is fine, but a 3.3 V rail won't regulate. The TO-252 (DPak) package has an exposed tab on the drain; the datasheet copper area under that tab sets the junction-to-ambient thermal resistance. At 800 mA and 1.2 V dropout the device dissipates nearly 1 W — plan a 1 in² copper pad on a 2-layer board to keep the junction below the 125°C ceiling. TI has ended production; no last-time-buy window is open. New builds need an alternative — the closest pin-compatible option is the LM1117DT-3.3/NOPB if the load can tolerate 3.3 V, or a different fixed-voltage variant in the same family if 2.85 V is mandatory. For existing BOM lines, independent distribution holds remaining inventory.","metaTitle":"LM1117DT-2.85/NOPB LDO Regulator, 2.85V Fixed, 800mA, TO-252","metaDescription":"Texas Instruments LM1117DT-2.85/NOPB LDO, fixed 2.85V output, 800mA, 75dB PSRR at 120Hz. Obsolete.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Analog & Data Acquisition"],"specifications":{"Mfr":"Texas Instruments","PSRR":"75dB (120Hz)","Series":"-","Package":"Tube","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"TO-252-3, DPak (2 Leads + Tab), SC-63","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Control Features":"-","Current - Output":"800mA","Base Product Number":"LM1117","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","Current - Supply (Max)":"10 mA","Voltage - Output (Max)":"-","Supplier Device Package":"TO-252-3","Current - Quiescent (Iq)":"5 mA","Voltage - Output (Min/Fixed)":"2.85V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/f7a4a08ab916aa4ed597c3c1d9ab0eb4.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM1117DT-2.85%2FNOPB/alternatives.json"},"ai":{"faq":[{"question":"Is LM1117DT-2.85/NOPB obsolete?","answer":"Yes, the product status is obsolete. TI has discontinued this fixed 2.85 V variant. No further production runs are planned."},{"question":"Can LM1117DT-2.85 be replaced by LM1117DT-3.3?","answer":"Pin-compatible yes — same TO-252 package and pinout — but the output voltage is 3.3 V instead of 2.85 V. Check whether the load can accept the higher rail before substituting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM1117DT-2.85-NOPB","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM1117DT-2.85-NOPB 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}}