{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BQ24159YFFR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"BQ24159YFFR","canonicalUrl":"https://icboms.com/texas-instruments/BQ24159YFFR","factsUrl":"https://icboms.com/api/mcp/products/BQ24159YFFR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments BQ24159YFFR single-cell Li-Ion/Polymer battery charger, I²C interface, 1.55 A max charge current, over-temp/over-voltage protection, 20-DSBGA package, -30°C to 85°C operation.","salesMarkdown":"The BQ24159YFFR is a single-cell Li-Ion/Polymer battery charger from Texas Instruments, built for constant-current programmable charging with a maximum charge current of 1.55 A. That 1.55 A ceiling sets the charge time floor for a given cell capacity — a 1000 mAh cell charges at roughly C/1.5, keeping the thermal rise manageable in the 20-DSBGA package. The I²C interface gives the host controller command over the charge current and timer, so you can adjust the profile on the fly for different cell chemistries or temperature conditions without swapping passives. ## Fault protection — over-temp and over-voltage On-chip fault protection covers over-temperature and over-voltage conditions. That means the charger can shut itself down if the die exceeds safe limits or if the input supply spikes above the 9 V max supply rating. For a board-level repair tech, this is the kind of part where the scorch mark tells you the protection saved the cell — the charger IC itself may be the casualty, not the battery. ## Package and footprint — 20-DSBGA Housed in a 20-UFBGA, DSBGA package with a supplier device package of 20-DSBGA. This is a fine-pitch BGA — the rework lab tech will want a hot-air profile that doesn't reflow adjacent bumps, and the board needs a solder mask defined pad layout.","metaTitle":"TI BQ24159YFFR Li-Ion/Polymer Battery Charger, 1.55 A Max","metaDescription":"Texas Instruments BQ24159YFFR single-cell Li-Ion/Polymer charger with I²C interface, 1.55 A 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":"20-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":"BQ24159","Battery Pack Voltage":"4.44V (Max)","Charge Current - Max":"1.55A","Operating Temperature":"-30°C~85°C(TA)","Programmable Features":"Current, Timer","Voltage - Supply (Max)":"9V","Supplier Device Package":"20-DSBGA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.1920","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/d780b716ccd2a8a077e805745c7b991a.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Can BQ24159YFFR charge a 4.2 V single-cell Li-ion battery?","answer":"Yes. The BQ24159YFFR is designed for single-cell Li-Ion/Polymer batteries with a maximum battery pack voltage of 4.44 V, which covers the standard 4.2 V full-charge termination voltage. The I²C interface lets you set the charge current and timer to match the cell's recommended profile."},{"question":"What is the maximum charge current for BQ24159YFFR?","answer":"The maximum charge current is 1.55 A, programmable via I²C. This is the constant-current ceiling; actual charge current can be set lower through the I²C interface to match the cell capacity and thermal budget."},{"question":"Does BQ24159YFFR work with single-cell LiPo batteries?","answer":"Yes. The battery chemistry is listed as Lithium Ion/Polymer, so it supports both Li-ion and LiPo single-cell packs. The 4.44 V max battery voltage covers the standard 4.2 V LiPo termination voltage."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/BQ24159YFFR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/BQ24159YFFR 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}}