{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BQ24161YFFT","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"BQ24161YFFT","canonicalUrl":"https://icboms.com/texas-instruments/BQ24161YFFT","factsUrl":"https://icboms.com/api/mcp/products/BQ24161YFFT","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments BQ24161YFFT, single-cell Li-Ion/Polymer battery charger, I²C interface, 2.5A max charge current, over-temperature/over-voltage protection, 49-DSBGA (2.8x2.8 mm) package, -40°C to 85°C operating temperature.","salesMarkdown":"## Single-cell Li-Ion charger with I²C programmability The Texas Instruments BQ24161YFFT is a single-cell Li-Ion/Polymer battery charger with a programmable constant charge current up to 2.5 A, controlled via an I²C interface. It integrates over-temperature and over-voltage fault protection, reducing external component count. ## 2.5 A charge current and I²C control The 2.5 A maximum charge current supports fast charging of single-cell Li-Ion packs with a nominal voltage of 3.7 V. The I²C interface allows the host microcontroller to set charge current, termination threshold, and status monitoring without additional GPIOs. Fault protection covers over-temperature and over-voltage conditions, safeguarding the battery and charger during abnormal operation. The constant-current / constant-voltage charging profile is standard for Li-Ion/Polymer chemistry. ## 49-DSBGA footprint and layout considerations The 49-DSBGA package measures 2.8 x 2.8 mm. No official second-source or pin-compatible replacement is listed in the TI portfolio for this exact package variant.","metaTitle":"BQ24161YFFT – TI single-cell Li-Ion charger, I²C, 2.5A max","metaDescription":"Texas Instruments BQ24161YFFT single-cell Li-Ion/Polymer battery charger with I²C interface, 2.5A max charge current, over-temp/over-voltage protection","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":"I²C","Mounting Type":"Surface Mount","Package / Case":"49-UFBGA, DSBGA","Product Status":"Active","Number of Cells":"1","lifecycle_stage":"eol_hot","Fault Protection":"Over Temperature, Over Voltage","Battery Chemistry":"Lithium Ion/Polymer","Current - Charging":"Constant - Programmable","Base Product Number":"BQ24161","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/77833ded8e778e5bdab6222dc31031fa.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is the BQ24161YFFT compatible with a 3.7 V single-cell LiPo battery?","answer":"Yes. The device is designed for single-cell Li-Ion/Polymer batteries with a nominal pack voltage of 3.7 V and supports a programmable charge current up to 2.5 A."},{"question":"Does the BQ24161 support USB input?","answer":"The device accepts up to 10 V input, so standard USB 5 V is within range. The I²C interface can be used to configure input current limits for USB enumeration (e.g., 100 mA / 500 mA) if the host controller manages the negotiation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/BQ24161YFFT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/BQ24161YFFT 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}}