{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TC664EUN","brand":"Microchip Technology","brandSlug":"microchip","productSlug":"TC664EUN","canonicalUrl":"https://icboms.com/microchip/TC664EUN","factsUrl":"https://icboms.com/api/mcp/products/TC664EUN","rawCanonicalId":null},"summary":{"shortDescription":"Microchip Technology TC664EUN BLDC motor speed controller, I²C interface, 3V-5.5V supply, 10-MSOP package, Tube.","salesMarkdown":"## BLDC speed controller with I²C bus The Microchip Technology TC664EUN is a brushless DC (BLDC) motor speed controller that integrates an I²C interface for digital speed command and monitoring — a step up from open-loop PWM fan drivers that lack feedback. It drives low-side pre-driver outputs, so the external FETs handle the commutation while the controller manages speed regulation via the I²C bus. ## Temperature grade and package fit Housed in a 10-MSOP (3.00 mm width) surface-mount package, the footprint matches standard 0.50 mm pitch MSOP-10 land patterns. Supplied in Tube — design-in quantities for prototype or low-volume builds; reels available on request.","metaTitle":"Microchip TC664EUN BLDC Motor Controller, I²C, 3V-5.5V","metaDescription":"Microchip Technology TC664EUN BLDC motor speed controller with I²C interface, 3V-5.5V supply, -40°C to 85°C. Active production, ROHS3 compliant.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Package":"Tube","Function":"Controller - Speed","Interface":"I²C","Applications":"Fan Controller","Mounting Type":"Surface Mount","Package / Case":"10-TFSOP, 10-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":"10-MSOP"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.36","priceTiers":[{"qty":1,"price":"$2.36000","currency":"USD"},{"qty":25,"price":"$1.97160","currency":"USD"},{"qty":100,"price":"$1.79140","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/c751c4d562cfb3c635ccc7e3065e1b24.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TC664EUN/alternatives.json"},"ai":{"faq":[{"question":"What is the TC664EUN's function in a fan controller application?","answer":"It is a BLDC motor speed controller with an I²C interface, meaning it takes a digital speed command over the bus and drives low-side pre-driver outputs to the external FETs. This allows closed-loop speed regulation without analog tachometer feedback."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/microchip/TC664EUN","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/microchip/TC664EUN 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}}