{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3503SQX-35/NOPB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3503SQX-35-NOPB","canonicalUrl":"https://icboms.com/texas-instruments/LM3503SQX-35-NOPB","factsUrl":"https://icboms.com/api/mcp/products/LM3503SQX-35%2FNOPB","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM3503SQX-35/NOPB, DC-DC Regulator, Step-Up (Boost), 1MHz, 35V Output, 750mA Switch, 16-WFQFN Exposed Pad, -40°C~85°C.","salesMarkdown":"## Boost regulator for dual-channel LED backlight It integrates two output channels, each capable of sinking up to 750 mA (switch current), with a regulated output voltage up to 35 V. Dimming control supports both analog and PWM methods, giving the designer flexibility to adjust brightness without external components for PWM generation. The switching frequency is fixed at 1 MHz, which allows the use of small inductors and ceramic capacitors, shrinking the overall solution footprint. For BOM lines requiring this exact part, supply is limited to independent distribution and broker inventory.","metaTitle":"Texas Instruments LM3503SQX-35/NOPB DC-DC Boost Regulator","metaDescription":"Obsolete TI LM3503SQX-35/NOPB boost regulator, 1MHz, dual-channel analog/PWM dimming, 35V output, 750mA switch.","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":"35V","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":"750mA (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-35%2FNOPB/alternatives.json"},"ai":{"faq":[{"question":"What is the replacement for LM3503SQX-35/NOPB?","answer":"No official replacement or successor is listed by the manufacturer. For a pin-compatible alternative, review the LM3503 family base part number (LM3503) for any active variants; otherwise, a design review is needed to select a functionally equivalent boost regulator from TI's current portfolio."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3503SQX-35-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-35-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}}