{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TC649BEUA","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"TC649BEUA","canonicalUrl":"https://icboms.com/microchip/TC649BEUA","factsUrl":"https://icboms.com/api/mcp/products/TC649BEUA","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology FanSense™ series, BLDC motor speed controller, TC649BEUA, 3V-5.5V supply, low-side pre-driver output, 8-MSOP package, tube.","salesMarkdown":"## Speed control for a 3-wire or 4-wire fan The TC649BEUA is a brushless DC (BLDC) fan speed controller from Microchip's FanSense™ series. It drives the low-side pre-driver output to regulate fan speed based on a parallel interface input, making it a straightforward fit for systems that need closed-loop fan control without a full motor driver IC. Operating from a 3V to 5.5V supply, it handles the common logic and fan supply rails found in embedded systems, telecom equipment, and industrial control panels. ## Package and board-fit for hand-soldering Housed in an 8-MSOP package (3.00 mm width, 0.118\" pitch), the TC649BEUA is hand-solderable with a fine-tip iron and a steady hand — no hot-air station required. The 8-TSSOP alternative footprint is identical, so a single PCB layout covers both. Surface-mount assembly is the intended method, but the 0.65 mm lead pitch is manageable for prototype rework with flux and tweezers. ## Temperature range and deployment context The industrial temperature grade covers most fan-cooled enclosures without derating.","metaTitle":"Microchip TC649BEUA Fan Controller, 3V-5.5V, 8-MSOP","metaDescription":"Microchip TC649BEUA FanSense™ BLDC motor speed controller. 3V-5.5V supply, low-side pre-driver, 8-MSOP package. Active, RoHS3 compliant. Request a quote.","metaKeywords":null},"attributes":{"series":"FanSense™","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Series":"FanSense™","Package":"Tube","Function":"Controller - Speed","Interface":"Parallel","Applications":"Fan Controller","Mounting Type":"Surface Mount","Package / Case":"8-TSSOP, 8-MSOP (0.118\\\", 3.00mm Width)","lifecycle_stage":"eol_hot","Voltage - Supply":"3V ~ 5.5V","Motor Type - AC, DC":"Brushless DC (BLDC)","Output Configuration":"Pre-Driver - Low Side","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"8-MSOP"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.71","priceTiers":[{"qty":1,"price":"$1.71000","currency":"USD"},{"qty":25,"price":"$1.54480","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/a920cff692517f4bb6cd6121a58c06d9.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TC649BEUA/alternatives.json"},"ai":{"faq":[{"question":"What is the TC649BEUA used for?","answer":"It controls the speed of a brushless DC (BLDC) fan using a low-side pre-driver output. Typical applications include thermal management in power supplies, telecom equipment, and embedded systems where a parallel control interface is available."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/TC649BEUA","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/TC649BEUA 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}}