{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BQ27520YZFT-G4","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"BQ27520YZFT-G4","canonicalUrl":"https://icboms.com/texas-instruments/BQ27520YZFT-G4","factsUrl":"https://icboms.com/api/mcp/products/BQ27520YZFT-G4","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments BQ27520YZFT-G4, Impedance Track™ Series, Battery Monitor, I²C Interface, 1-Cell Lithium Ion, -40°C to 85°C, 15-DSBGA Surface Mount Package.","salesMarkdown":"## Single-cell Li-Ion fuel gauge with Impedance Track™ The Texas Instruments BQ27520YZFT-G4 is a single-cell Lithium Ion battery monitor from the Impedance Track™ series. It uses TI's learning-based algorithm to report state-of-charge, state-of-health, and remaining capacity over an I²C interface — no external current-sense resistor needed because the gauge integrates the coulomb counter on-chip. ## I²C interface and single-cell topology Communication with the host processor runs over a standard I²C bus. The gauge reports voltage, current, temperature, and accumulated charge — the host reads these registers to compute remaining run time. No proprietary protocol or extra GPIOs are required. The part is designed for exactly one series cell (1S). For multi-cell packs (2S or higher), an external cell-balancing circuit and a different gauge variant are needed. The BQ27520 does not include internal balancing FETs. The base product number is BQ27520; the YZFT-G4 suffix denotes the 15-DSBGA package and the tape-and-reel / cut-tape shipping options. No official second-source or pin-compatible alternate is listed in the TI portfolio — the BQ27520 family is the only Impedance Track gauge in this footprint.","metaTitle":"BQ27520YZFT-G4 Battery Monitor, Impedance Track, I²C","metaDescription":"Texas Instruments BQ27520YZFT-G4 single-cell Li-Ion battery monitor with Impedance Track™ algorithm. I²C interface, -40°C to 85°C, 15-DSBGA.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"Mfr":"Texas Instruments","Series":"Impedance Track™","Package":"Tape & Reel (TR); Cut Tape (CT)","Function":"Battery Monitor","Interface":"I²C","Mounting Type":"Surface Mount","Package / Case":"15-UFBGA, DSBGA","Number of Cells":"1","lifecycle_stage":"eol_hot","Fault Protection":"-","Battery Chemistry":"Lithium Ion","Base Product Number":"BQ27520","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"15-DSBGA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/e0d34f9c94efd41e8448e8a5f2d346da.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/BQ27520YZFT-G4","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/BQ27520YZFT-G4 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}}