{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LMS8117ADTX-3.3","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LMS8117ADTX-3.3","canonicalUrl":"https://icboms.com/texas-instruments/LMS8117ADTX-3.3","factsUrl":"https://icboms.com/api/mcp/products/LMS8117ADTX-3.3","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LMS8117ADTX-3.3 LDO linear voltage regulator, 3.3V fixed output, 1A, TO-252-3 (DPak) surface-mount package, 75dB PSRR at 120Hz, over-current and over-temperature protection.","salesMarkdown":"## 1A fixed 3.3V LDO with 75dB PSRR — the noise rejection angle The LMS8117ADTX-3.3 is a fixed-output 3.3 V linear regulator delivering up to 1 A from a TO-252-3 (DPak) surface-mount package. Its 75 dB power-supply rejection ratio at 120 Hz means it attenuates 120 Hz ripple from a rectified mains supply by a factor of roughly 5600 — relevant when the regulator sits downstream of a bulk capacitor and the analog load (ADC reference, op-amp rail, sensor bias) cannot tolerate line-frequency ripple on its supply. The 1 A output current and 1.25 V maximum dropout at full load define the input rail headroom: a 4.55 V minimum input keeps the 3.3 V output in regulation at 1 A. ## Active lifecycle, RoHS non-compliant — the compliance flag Built-in protection features — over-current and over-temperature — let the regulator survive output shorts and thermal overload events without external crowbar circuitry. ## TO-252-3 package — board-fit and thermal path The tab is the ground path and the primary thermal conduction path — the junction-to-ambient thermal resistance depends heavily on the board's copper area and layer stack. A 1 A load at 3.3 V output from a 5 V input dissipates 1.7 W; without adequate copper area the junction temperature rises above the 125°C limit. The single-regulator positive-output configuration means no external resistor divider is needed for the 3.3 V rail — the fixed output voltage is set internally. Maximum input voltage is 15 V, so the part can run from 5 V, 9 V, or 12 V rails without a pre-regulator, as long as the dropout headroom is maintained.","metaTitle":"LMS8117ADTX-3.3 3.3V Fixed 1A LDO, TO-252, Active","metaDescription":"Texas Instruments LMS8117ADTX-3.3 LDO, 3.3V fixed output, 1A, 75dB PSRR at 120Hz. TO-252-3 package. Active lifecycle. RoHS non-compliant. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"RoHS non-compliant","productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"PSRR":"75dB (120Hz)","Package":"Bulk","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"TO-252-3, DPak (2 Leads + Tab), SC-63","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 (TJ)","Voltage - Input (Max)":"15V","Voltage Dropout (Max)":"1.25V @ 1A","Supplier Device Package":"TO-252","Current - Quiescent (Iq)":"10 mA","Voltage - Output (Min/Fixed)":"3.3V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.33","stockQuantity":0,"priceTiers":[{"qty":902,"price":"$0.33000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/8c86a69ef25ce0f8802a50018809a8a1.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the PSRR of the LMS8117ADTX-3.3?","answer":"The power-supply rejection ratio is 75 dB at 120 Hz — this is the line-frequency ripple rejection figure that matters when the regulator feeds noise-sensitive analog circuits from a rectified AC supply."},{"question":"Is the LMS8117ADTX-3.3 RoHS compliant?","answer":"No, it is marked RoHS non-compliant. The part contains lead and is not suitable for BOMs requiring full RoHS exemption-free compliance unless a relevant exemption applies."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LMS8117ADTX-3.3","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LMS8117ADTX-3.3 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}}