{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LMS8117AMPX-1.8","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LMS8117AMPX-1.8","canonicalUrl":"https://icboms.com/texas-instruments/LMS8117AMPX-1.8","factsUrl":"https://icboms.com/api/mcp/products/LMS8117AMPX-1.8","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LMS8117AMPX-1.8, fixed positive-output LDO regulator, 1.8 V, 1 A, SOT-223 (TO-261-4), PSRR 60 ~ 75 dB at 120 Hz, over-current and over-temperature protection.","salesMarkdown":"## Fixed 1.8 V rail, 1 A continuous — the dropout ceiling at full load The LMS8117AMPX-1.8 is a fixed 1.8 V positive-output LDO from Texas Instruments, rated for 1 A continuous output current. Below that headroom the output falls out of spec. Quiescent current is 5 mA typical, and the maximum supply current is 10 mA. The 60 ~ 75 dB PSRR at 120 Hz gives useful ripple rejection on the output for noise-sensitive analog loads — a sensor or ADC front-end powered off this rail sees less 120 Hz hum from a rectified mains supply. ## SOT-223 package and board-fit realities Packaged in SOT-223 (TO-261-4, TO-261AA) for surface-mount assembly. For a 1 A load at 1.25 V dropout, the die dissipates 1.25 W; a 1 oz copper pad of at least 500 mm² on the top layer keeps the junction below the 125 °C ceiling. Operating temperature range is 0 °C to 125 °C — suitable for commercial and industrial environments where the ambient stays above freezing. Below 0 °C the output accuracy is not characterised; if the board sees cold start, a wider-temp LDO is needed.","metaTitle":"TI LMS8117AMPX-1.8 LDO Regulator, 1.8V Fixed, 1A, SOT-223","metaDescription":"Texas Instruments LMS8117AMPX-1.8 fixed 1.8V LDO, 1A output, 1.25V dropout, PSRR 60-75dB. SOT-223 package. Active production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"RoHS non-compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"PSRR":"60 ~ 75 dB (120Hz)","Package":"Bulk","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"TO-261-4, TO-261AA","lifecycle_stage":"eol_hot","Current - Output":"1A","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)":"1.25V @ 1A","Current - Supply (Max)":"10 mA","Supplier Device Package":"SOT-223","Current - Quiescent (Iq)":"5 mA","Voltage - Output (Min/Fixed)":"1.8V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.28","stockQuantity":0,"priceTiers":[{"qty":1069,"price":"$0.28000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/8c86a69ef25ce0f8802a50018809a8a1.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the PSRR of LMS8117AMPX-1.8?","answer":"Power supply rejection ratio is 60 ~ 75 dB at 120 Hz. This means the output attenuates 120 Hz ripple from a full-wave rectified input by a factor of 1000 to 5600 — enough for most analog front-ends that are not directly driving a high-resolution ADC without a post-filter."},{"question":"What package is LMS8117AMPX-1.8 available in?","answer":"The supplier device package is SOT-223 (TO-261-4, TO-261AA). The tab is the output. The package is supplied in bulk — not tape-and-reel, so automated pick-and-place requires tube or tray loading."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LMS8117AMPX-1.8","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LMS8117AMPX-1.8 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}