{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LM3447MTX/NOPB","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"LM3447MTX-NOPB","canonicalUrl":"https://icboms.com/texas-instruments/LM3447MTX-NOPB","factsUrl":"https://icboms.com/api/mcp/products/LM3447MTX%2FNOPB","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments LM3447MTX/NOPB AC DC Offline Switcher, Triac dimming, Flyback topology, 19V output, Surface Mount 14-TSSOP, -40°C to 125°C.","salesMarkdown":"## Offline LED driver with Triac dimming — what it is and where it fits The Texas Instruments LM3447MTX/NOPB is an AC DC offline switcher designed for LED lighting applications, supporting Triac dimming in a flyback topology. It delivers a regulated 19V output from a single channel, with no internal power switch — an external MOSFET handles the switching. The part is housed in a 14-TSSOP package for surface-mount assembly, rated over -40°C to 125°C junction temperature, making it suitable for outdoor luminaires, downlights, and retrofit LED bulbs where existing wall dimmers must be preserved. ## Lifecycle and compliance — no obsolescence worry No last-time-buy or end-of-life notice applies here — this is a current-catalog part from Texas Instruments.","metaTitle":"LM3447MTX/NOPB AC DC Offline Switcher, Triac Dimming","metaDescription":"LM3447MTX/NOPB AC DC offline switcher with Triac dimming for LED lighting. Flyback topology, 19V output, -40°C to 125°C. Active, ROHS3. Available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Type":"AC DC Offline Switcher","Dimming":"Triac","Package":"Tape & Reel (TR); Cut Tape (CT)","Topology":"Flyback","Applications":"Lighting","Mounting Type":"Surface Mount","Package / Case":"14-TSSOP (0.173\\\", 4.40mm Width)","lifecycle_stage":"eol_hot","Voltage - Output":"19V","Number of Outputs":"1","Internal Switch(s)":"No","Operating Temperature":"-40°C ~ 125°C (TJ)","Voltage - Supply (Max)":"17.5V","Voltage - Supply (Min)":"7.5V","Supplier Device Package":"14-TSSOP"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.58","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.58000","currency":"USD"},{"qty":10,"price":"$1.41000","currency":"USD"},{"qty":25,"price":"$1.33840","currency":"USD"},{"qty":100,"price":"$1.09950","currency":"USD"},{"qty":250,"price":"$1.02784","currency":"USD"},{"qty":500,"price":"$0.90832","currency":"USD"},{"qty":1000,"price":"$0.71709","currency":"USD"},{"qty":2500,"price":"$0.67650","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/724b69bf6fce2bc0c014dd4040a509f1.pdf","sourceUrl":null},"ai":{"faq":[{"question":"How does LM3447MTX/NOPB dimming work with Triac?","answer":"The controller is designed to work with standard forward-phase Triac dimmers used in residential and commercial lighting. It senses the dimmer's conduction angle and adjusts the LED current accordingly, maintaining compatibility with existing wall dimmers without additional wiring."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/LM3447MTX-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/LM3447MTX-NOPB when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}