{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3503SQX-25","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3503SQX-25","canonicalUrl":"https://icboms.com/texas-instruments/LM3503SQX-25","factsUrl":"https://icboms.com/api/mcp/products/LM3503SQX-25","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM3503SQX-25, DC-DC boost regulator, step-up topology, 2 outputs, 25V output, 1MHz switching frequency, 600mA switch current, analog and PWM dimming, 16-WFQFN exposed pad package, -40°C to 85°C.","salesMarkdown":"## Boost regulator with dual outputs and dimming control The LM3503SQX-25 is a step-up (boost) DC-DC regulator designed primarily for LED backlight applications. It integrates two outputs, each capable of driving LED strings, with both analog and PWM dimming control for brightness adjustment. ## 1 MHz switching and 25 V output ceiling Switching at 1 MHz allows the use of small inductors and ceramic capacitors, keeping the backlight supply compact. The 25 V output rating supports strings of up to six or seven white LEDs in series, depending on their forward voltage drop. The LM3503SQX-25 is listed as obsolete. Buyers needing this exact order code for a BOM line must source through independent distribution or the surplus market.","metaTitle":"LM3503SQX-25 DC-DC Boost Regulator, 25V, 1MHz, Obsolete","metaDescription":"LM3503SQX-25 is a 2-output DC-DC boost regulator with analog/PWM dimming, 25V output, 1MHz switching, 600mA switch current.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["DC-DC Power Modules"],"specifications":{"Mfr":"Texas Instruments","Type":"DC DC Regulator","Series":"-","Dimming":"Analog, PWM","Package":"Tape & Reel (TR)","Topology":"Step-Up (Boost)","Frequency":"1MHz","Applications":"Backlight","Mounting Type":"Surface Mount","Package / Case":"16-WFQFN Exposed Pad","Product Status":"Obsolete","lifecycle_stage":"eol_hot","Voltage - Output":"25V","Number of Outputs":"2","Internal Switch(s)":"Yes","Base Product Number":"LM3503","Operating Temperature":"-40°C~85°C(TA)","Voltage - Supply (Max)":"5.5V","Voltage - Supply (Min)":"2.5V","Supplier Device Package":"16-WQFN (4x4)","Current - Output / Channel":"600mA (Switch)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/b5f4b20f44a7c0b93377b093bbaea4ad.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3503SQX-25/alternatives.json"},"ai":{"faq":[{"question":"What are the exact specifications of LM3503SQX-25?","answer":"It comes in a 16-WFQFN exposed pad package."},{"question":"Can LM3503SQX-25 be used in LCD backlight applications?","answer":"Yes, the LM3503SQX-25 is specifically designed for backlight applications. Its dual outputs, 25 V output capability, and analog/PWM dimming make it suitable for driving LED strings in LCD displays."},{"question":"Is LM3503SQX-25 pin compatible with LM3503?","answer":"The LM3503SQX-25 is a specific ordering option within the LM3503 base product family. Pin compatibility across the family depends on the specific package variant and ordering code; verify the pinout against the datasheet for the exact LM3503SQX-25."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3503SQX-25","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/LM3503SQX-25 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T18:03:28.771Z","lastPublished":"2026-07-22T18:03:28.771Z","indexable":true}}