{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TPS6281109QWRWYRQ1","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TPS6281109QWRWYRQ1","canonicalUrl":"https://icboms.com/texas-instruments/TPS6281109QWRWYRQ1","factsUrl":"https://icboms.com/api/mcp/products/TPS6281109QWRWYRQ1","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TPS6281109QWRWYRQ1, Automotive AEC-Q100, Step-Down Buck, Fixed 1.15 V Output, 1 A, 2.75 V to 6 V Input, 1.8 MHz to 4 MHz Switching, 9-VQFN-HR (3x2) Wettable Flank Package","salesMarkdown":"## What this 1 A automotive buck regulator does for your rail The TPS6281109QWRWYRQ1 is an automotive-grade synchronous buck regulator that delivers a fixed 1.15 V output at up to 1 A from a 2.75 V to 6 V input rail — a common point-of-load for CAN transceivers, sensor supplies, or MCU core rails in body electronics or ADAS modules. The 1.8 MHz to 4 MHz switching range lets you size the inductor for a compact footprint while keeping switching losses in check — a practical choice when the ECU layout is tight and the 1 A load doesn't demand a large output cap. ## Switching frequency and inductor sizing trade-off At 4 MHz the inductor can drop to 0.47 µH or 0.68 µH, saving board area, but you give up some light-load efficiency. Dropping to 1.8 MHz recovers efficiency at lower output currents but needs a 1 µH to 2.2 µH inductor — a choice the designer makes by setting the RT pin resistor. Sourced through our distribution channel; availability and current pricing confirmed against your BOM quantity at quote time. Submit an RFQ for the exact volume and lead time. ## Package and thermal handling for the 9-VQFN-HR The 9-VQFN-HR (3x2 mm) package with wettable flank terminals is designed for automated optical inspection — the side plating lets the solder-paste fillet wick up the flank, giving a visible joint after reflow.","metaTitle":"TPS6281109QWRWYRQ1 Buck Regulator 1A 1.15V AEC-Q100 Active","metaDescription":"Texas Instruments TPS6281109QWRWYRQ1 automotive step-down buck regulator, 1 A output, fixed 1.15 V, 2.75 V to 6 V input, AEC-Q100, active production.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"Mfr":"Texas Instruments","Grade":"Automotive","Series":"-","Package":"Tape & Reel (TR) Cut Tape (CT)","Function":"Step-Down","Topology":"Buck","Output Type":"Fixed","Mounting Type":"Surface Mount, Wettable Flank","Qualification":"AEC-Q100","Package / Case":"9-VFQFN","Product Status":"Active","lifecycle_stage":"eol_hot","Current - Output":"1A","Number of Outputs":"1","Base Product Number":"TPS6281109","Output Configuration":"Positive","Frequency - Switching":"1.8MHz ~ 4MHz","Operating Temperature":"-40°C ~ 125°C (TA)","Synchronous Rectifier":"Yes","Voltage - Input (Max)":"6V","Voltage - Input (Min)":"2.75V","Voltage - Output (Max)":"-","Supplier Device Package":"9-VQFN-HR (3x2)","Voltage - Output (Min/Fixed)":"1.15V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.1200","priceTiers":[{"qty":1,"price":"$2.12000","currency":"USD"},{"qty":10,"price":"$1.90000","currency":"USD"},{"qty":25,"price":"$1.79280","currency":"USD"},{"qty":100,"price":"$1.52740","currency":"USD"},{"qty":250,"price":"$1.43420","currency":"USD"},{"qty":500,"price":"$1.25492","currency":"USD"},{"qty":1000,"price":"$1.03980","currency":"USD"},{"qty":3000,"price":"$0.96809","currency":"USD"},{"qty":6000,"price":"$0.93223","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/9961941e6810574e94b27ce836c9ee73.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TPS6281109QWRWYRQ1/alternatives.json"},"ai":{"faq":[{"question":"Is the TPS6281109QWRWYRQ1 AEC-Q100 qualified?","answer":"Yes, it carries AEC-Q100 qualification, making it suitable for automotive applications that require the full stress-test sequence (preconditioning, temperature cycling, HAST, etc.)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TPS6281109QWRWYRQ1","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TPS6281109QWRWYRQ1 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}