{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LP38690SDX-2.5","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LP38690SDX-2.5","canonicalUrl":"https://icboms.com/texas-instruments/LP38690SDX-2.5","factsUrl":"https://icboms.com/api/mcp/products/LP38690SDX-2.5","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LP38690SDX-2.5, fixed-output LDO regulator, 2.5V, 1A, 55dB PSRR (120Hz), 1.3V max dropout at 1A, -40 to 125°C, 6-WSON (3x3 mm) exposed pad, surface mount.","salesMarkdown":"## Fixed 2.5 V LDO for 1 A rails — what to watch The Texas Instruments LP38690SDX-2.5 is a single-output positive LDO regulator delivering a fixed 2.5 V at up to 1 A. It comes in a 6-WSON (3x3 mm) exposed-pad package rated for junction temperatures from -40 to 125 °C, making it suitable for industrial and automotive-adjacent environments where the board sees under-hood or outdoor thermal cycling. The 55 dB PSRR at 120 Hz tells you it rejects line-frequency ripple well enough for post-switcher clean-up on analog or mixed-signal rails. ## Dropout and headroom — the number that bites Maximum dropout is 1.3 V at 1 A. The input rail must stay above 2.5 V + 1.3 V to maintain regulation at full load. ## Thermal: the exposed pad is not optional The 6-WSON package with exposed pad (3x3 mm footprint) relies on a good thermal via pattern to the ground plane. Without it, 1 A output at high dropout will push the junction past 125 °C. The protection features include over-temperature shutdown, but that is a last-resort guard, not a design margin. Plan the copper area under the pad as part of the layout review. ## Lifecycle and compliance The LP38690SDX-2.5 is listed as active with no end-of-life notification. Note the RoHS compliance status: this variant is marked RoHS non-compliant, so verify your assembly line's solder profile and exemption requirements before committing the BOM.","metaTitle":"LP38690SDX-2.5 LDO Regulator, 2.5V Fixed, 1A, 6-WSON","metaDescription":"LP38690SDX-2.5 LDO regulator: 2.5V fixed output, 1A, 55dB PSRR at 120Hz, dropout 1.3V max at 1A, -40 to 125°C. Request quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"RoHS non-compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"PSRR":"55dB (120Hz)","Package":"Bulk","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"6-WDFN Exposed Pad","lifecycle_stage":"eol_hot","Current - Output":"1A","Protection Features":"Over Temperature","Number of Regulators":"1","Output Configuration":"Positive","Operating Temperature":"-40°C ~ 125°C (TJ)","Voltage - Input (Max)":"10V","Voltage Dropout (Max)":"1.3V @ 1A","Current - Supply (Max)":"100 µA","Supplier Device Package":"6-WSON (3x3)","Voltage - Output (Min/Fixed)":"2.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.72","stockQuantity":0,"priceTiers":[{"qty":419,"price":"$0.72000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/07172954fd62d719c228ed3755712fa8.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is LP38690SDX-2.5's PSRR?","answer":"The PSRR is 55 dB at 120 Hz, which is typical for a 1 A LDO and adequate for cleaning line-frequency ripple from a rectified or switching front-end."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LP38690SDX-2.5","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LP38690SDX-2.5 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}