{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3503SQX-16/NOPB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3503SQX-16-NOPB","canonicalUrl":"https://icboms.com/texas-instruments/LM3503SQX-16-NOPB","factsUrl":"https://icboms.com/api/mcp/products/LM3503SQX-16%2FNOPB","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM3503SQX-16/NOPB, DC DC Regulator, Step-Up (Boost), 1 MHz, 16 V output, 400 mA switch current, 2.5 V to 5.5 V supply, Analog/PWM dimming, 16-WFQFN Exposed Pad, -40°C to 85°C.","salesMarkdown":"## Boost regulator for backlight — obsolete, sourced per RFQ The Texas Instruments LM3503SQX-16/NOPB is a DC DC Regulator using a Step-Up (Boost) topology, designed primarily for backlight applications. It integrates two internal switches and supports both Analog and PWM dimming control. Switching at 1 MHz, the part delivers a regulated output up to 16 V with a switch current limit of 400 mA per channel. ## Parametric profile — 1 MHz switching, 16 V ceiling The 1 MHz switching frequency allows the use of small-value inductors and ceramic capacitors, keeping the total solution footprint compact. Two outputs share the 400 mA switch current budget — the designer must allocate current per channel within that ceiling. ## Lifecycle — obsolete, no direct successor on record For new designs, a pin-compatible alternative from the same functional family should be evaluated.","metaTitle":"LM3503SQX-16/NOPB DC DC Regulator, 1 MHz Boost, 16 V Output","metaDescription":"Texas Instruments LM3503SQX-16/NOPB is a DC DC Regulator, Step-Up (Boost) topology, 1 MHz, 16 V output, 400 mA switch current, -40°C to 85°C.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Power Management (PMIC / Gate Driver)"],"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":"16V","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":"400mA (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-16%2FNOPB/alternatives.json"},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to LM3503SQX-16/NOPB?","answer":"For a drop-in replacement, the LM3503 family base number (LM3503) shares the same footprint and pinout across density variants, but each variant's output voltage and current ratings differ — verify the specific variant against the BOM requirements."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3503SQX-16-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/LM3503SQX-16-NOPB 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}}