{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LP38690DTX-2.5/NOPB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LP38690DTX-2.5-NOPB","canonicalUrl":"https://icboms.com/texas-instruments/LP38690DTX-2.5-NOPB","factsUrl":"https://icboms.com/api/mcp/products/LP38690DTX-2.5%2FNOPB","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LP38690DTX-2.5/NOPB LDO voltage regulator, fixed 2.5V output, 1A, positive, TO-252-3 DPak surface-mount, -40°C to 125°C, 55dB PSRR at 120Hz, ROHS3 compliant.","salesMarkdown":"The LP38690DTX-2.5/NOPB is an active-production Texas Instruments LDO regulator with a fixed 2.5V output and 1A current capability in the TO-252-3 (DPak) surface-mount package. Operating temperature spans -40°C to 125°C, covering both industrial floor and under-hood automotive ambient without derating concerns. ## PSRR and quiescent current — what they mean for the rail PSRR is 55 dB at 120 Hz — this is the ripple rejection from a full-wave rectified input. For a 5V rail with 100 mVpp of 120 Hz ripple, the output sees roughly 0.18 mVpp of that frequency component. Above a few hundred kHz the PSRR rolls off, so a ceramic output cap with low ESR is needed to keep high-frequency noise from coupling through. Quiescent current is 55 µA typical, with a maximum supply current of 100 µA across load and temperature. ## Package and thermal — TO-252-3 layout notes The tab must be soldered to a copper pad on the PCB for thermal dissipation — without it, the 1A output at high dropout will push the junction above the 125°C limit. A 1-inch-square copper pour on the bottom layer, connected with vias, keeps the junction temperature in check. The single regulator channel and fixed 2.5V output mean no external resistor divider is needed — the output voltage is set internally. The input cap and output cap are the only external components required for a basic application.","metaTitle":"LP38690DTX-2.5/NOPB Texas Instruments LDO, 2.5V Fixed, 1A","metaDescription":"Texas Instruments LP38690DTX-2.5/NOPB LDO regulator, fixed 2.5V output, 1A, 55dB PSRR at 120Hz, TO-252-3 package. Active production, ROHS3 compliant.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"PSRR":"55dB (120Hz)","Package":"Tape & Reel (TR); Cut Tape (CT)","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 Temperature","Number of Regulators":"1","Output Configuration":"Positive","Operating Temperature":"-40°C ~ 125°C","Voltage - Input (Max)":"10V","Voltage Dropout (Max)":"1.3V @ 1A","Current - Supply (Max)":"100 µA","Supplier Device Package":"TO-252-3","Current - Quiescent (Iq)":"55 µA","Voltage - Output (Min/Fixed)":"2.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.03","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$2.03000","currency":"USD"},{"qty":10,"price":"$1.82300","currency":"USD"},{"qty":25,"price":"$1.72000","currency":"USD"},{"qty":100,"price":"$1.46530","currency":"USD"},{"qty":250,"price":"$1.37588","currency":"USD"},{"qty":500,"price":"$1.20390","currency":"USD"},{"qty":1000,"price":"$0.99751","currency":"USD"},{"qty":2500,"price":"$0.97350","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/537d21f8094b1e4b51fad6158702f7c8.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What compliance documentation does Texas Instruments provide for LP38690DTX-2.5/NOPB?","answer":"The part is ROHS3 compliant. Texas Instruments provides the standard RoHS declaration and material composition data. No UL or IEC certification is listed in the available documentation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LP38690DTX-2.5-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/LP38690DTX-2.5-NOPB 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}}