{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LP3963ESX-2.5","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LP3963ESX-2.5","canonicalUrl":"https://icboms.com/texas-instruments/LP3963ESX-2.5","factsUrl":"https://icboms.com/api/mcp/products/LP3963ESX-2.5","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LP3963ESX-2.5 LDO voltage regulator, fixed 2.5V output, 3A, DDPAK/TO-263-5 surface-mount package, enable pin, -40 to 125°C.","salesMarkdown":"## 3A fixed-rail LDO for post-regulator and point-of-load duty The LP3963ESX-2.5: Maximum dropout is 1.2V at full load, so the input rail needs at least 3.7V to hold regulation across load and temperature; a 5V bus gives roughly 1.8V of headroom, which is comfortable. ## Package, thermal path, and board-fit realities The enable pin lets a supervisor or GPIO sequence this rail on after the input bus is stable, which avoids inrush glitches on the upstream supply. Protection is built in: over-current, over-temperature, and short-circuit shutdown keep the regulator from self-destructing if the load faults or the ambient spikes during a stalled fan event. ## Quiescent draw and supply current — always-on rail budget Quiescent current is 9 mA typical, and the maximum supply current is 15 mA — not a micropower LDO, but acceptable for a 3A-rated part where the load current dominates the power budget. The 15 mA supply max means the regulator's own dissipation at 5V input is under 75 mW, negligible next to the 3A load dissipation. ## Lifecycle and sourcing — active, but watch the RoHS flag That is a flag for new designs targeting RoHS-10/REACH compliance; legacy BOMs that already have an exemption or a Pb-free waiver can proceed.","metaTitle":"LP3963ESX-2.5 LDO Regulator, 3A, Fixed 2.5V, TO-263","metaDescription":"LP3963ESX-2.5 3A LDO, fixed 2.5V output, 1.2V dropout at 3A, -40 to 125°C, DDPAK/TO-263-5. Active production, sourced per RFQ. RoHS non-compliant.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"RoHS non-compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Package":"Bulk","Output Type":"Fixed","Mounting Type":"Surface Mount","Package / Case":"TO-263-6, D²Pak (5 Leads + Tab), TO-263BA","lifecycle_stage":"eol_hot","Control Features":"Enable","Current - Output":"3A","Protection Features":"Over Current, Over Temperature, Short Circuit","Number of Regulators":"1","Output Configuration":"Positive","Operating Temperature":"-40°C ~ 125°C","Voltage - Input (Max)":"7V","Voltage Dropout (Max)":"1.2V @ 3A","Current - Supply (Max)":"15 mA","Supplier Device Package":"DDPAK/TO-263-5","Current - Quiescent (Iq)":"9 mA","Voltage - Output (Min/Fixed)":"2.5V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.01","stockQuantity":0,"priceTiers":[{"qty":150,"price":"$2.01000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/75d9507e6810331c5b5b28672ebde6ad.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What package does LP3963ESX-2.5 come in?","answer":"It is supplied in a DDPAK/TO-263-5 surface-mount package — the 5-lead variant of the standard TO-263 with an exposed thermal tab."},{"question":"Is LP3963ESX-2.5 RoHS compliant?","answer":"No, it is marked RoHS non-compliant. New designs requiring RoHS-10/REACH compliance should verify the exemption status or select a Pb-free alternative."},{"question":"How do I get current pricing and availability for LP3963ESX-2.5?","answer":"Submit an RFQ through this listing."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LP3963ESX-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/LP3963ESX-2.5 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}