{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BQ24166YFFT","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"BQ24166YFFT","canonicalUrl":"https://icboms.com/texas-instruments/BQ24166YFFT","factsUrl":"https://icboms.com/api/mcp/products/BQ24166YFFT","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments BQ24166YFFT, Li-Ion battery charger, USB interface, 2.5A max charge current, 1-cell, 49-DSBGA package, -40°C to 85°C operating temperature.","salesMarkdown":"The BQ24166YFFT from Texas Instruments is a single-cell Li-ion battery charger with a USB interface, delivering a programmable constant charge current up to 2.5 A. That 2.5 A ceiling is the maximum the part can source into the battery; the actual charge rate is set by an external resistor or I2C command, so the same part can serve a 500 mA wearable or a 2 A tablet without a BOM change. The 49-DSBGA (2.8x2.8 mm) package keeps the footprint small enough for space-constrained portable designs. ## Industrial temperature grade and protection On-chip fault protection covers over-temperature and short-circuit conditions — the part will shut down before the battery or the PCB trace sees a fault current it cannot handle. For a production BOM that needs a single-cell Li-ion charger with USB input, this part is a current-design-in candidate with no near-term obsolescence concern.","metaTitle":"BQ24166YFFT Texas Instruments Battery Charger, 2.5A Max","metaDescription":"Texas Instruments BQ24166YFFT Li-ion battery charger with USB interface, 2.5A max charge current, 49-DSBGA package.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"Mfr":"Texas Instruments","Series":"-","Package":"Tape & Reel (TR); Cut Tape (CT)","Interface":"USB","Mounting Type":"Surface Mount","Package / Case":"49-UFBGA, DSBGA","Product Status":"Active","Number of Cells":"1","lifecycle_stage":"eol_hot","Fault Protection":"Over Temperature, Short Circuit","Battery Chemistry":"Lithium Ion","Current - Charging":"Constant - Programmable","Base Product Number":"BQ24166","Battery Pack Voltage":"3.7V","Charge Current - Max":"2.5A","Operating Temperature":"-40°C~85°C(TA)","Programmable Features":"-","Voltage - Supply (Max)":"10V","Supplier Device Package":"49-DSBGA (2.8x2.8)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4.6593","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/2bbd415d200f67d1d49ab5bb9ab994ae.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the maximum charge current for BQ24166YFFT?","answer":"The maximum charge current is 2.5 A, programmable via an external resistor or I2C. The actual current setpoint depends on the application circuit — the part can be configured for lower currents as needed."},{"question":"Is BQ24166YFFT compatible with 1-cell lithium ion?","answer":"Yes, it is designed for single-cell Li-ion batteries with a nominal pack voltage of 3.7 V. The battery chemistry is listed as Lithium Ion, and the number of cells is 1."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/BQ24166YFFT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/BQ24166YFFT 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}}