{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3509SDE/NOPB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3509SDE-NOPB","canonicalUrl":"https://icboms.com/texas-instruments/LM3509SDE-NOPB","factsUrl":"https://icboms.com/api/mcp/products/LM3509SDE%2FNOPB","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM3509SDE/NOPB, DC DC Regulator, Step-Up (Boost) topology, I²C dimming, 21V output, 30mA per channel, 2 outputs, 1.27MHz, 10-WFDFN Exposed Pad, -40°C~85°C.","salesMarkdown":"## Boost regulator with I²C dimming for dual LED strings Brightness control is handled via the I²C interface, allowing precise dimming of the LED strings without additional PWM components. ## 21 V output ceiling and dual-channel drive With a maximum output voltage of 21 V, the LM3509SDE/NOPB can drive up to five or six series-connected white LEDs per channel, depending on their forward voltage. The two outputs are independent, so one channel can power the main display while the other drives a secondary indicator or keypad backlight, or both can be paralleled for higher current into a single string.","metaTitle":"LM3509SDE/NOPB DC-DC Boost Regulator, I²C Dimming, 21V, 30mA","metaDescription":"Texas Instruments LM3509SDE/NOPB: DC-DC boost regulator with I²C dimming, 21V output, 30mA per channel, 2 outputs. Active lifecycle.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"Mfr":"Texas Instruments","Type":"DC DC Regulator","Series":"-","Dimming":"I²C","Package":"Tape & Reel (TR); Cut Tape (CT)","Topology":"Step-Up (Boost)","Frequency":"1.27MHz","Applications":"Backlight","Mounting Type":"Surface Mount","Package / Case":"10-WFDFN Exposed Pad","Product Status":"Active","lifecycle_stage":"eol_hot","Voltage - Output":"21V","Number of Outputs":"2","Internal Switch(s)":"Yes","Base Product Number":"LM3509","Operating Temperature":"-40°C~85°C(TA)","Voltage - Supply (Max)":"5.5V","Voltage - Supply (Min)":"2.7V","Supplier Device Package":"10-SON (3x3)","Current - Output / Channel":"30mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.8900","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/c492783d3d39a0ad5da58934a8e75bb5.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/LM3509SDE%2FNOPB/alternatives.json"},"ai":{"faq":[{"question":"Can LM3509SDE/NOPB be used for automotive backlight?","answer":"It is not listed as AEC-Q100 qualified, so it is not recommended for automotive-grade designs without additional qualification."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3509SDE-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/LM3509SDE-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}}