{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BQ27541DRZT-G1","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"BQ27541DRZT-G1","canonicalUrl":"https://icboms.com/texas-instruments/BQ27541DRZT-G1","factsUrl":"https://icboms.com/api/mcp/products/BQ27541DRZT-G1","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Impedance Track™ BQ27541DRZT-G1, Li-Ion battery fuel gauge, single-cell, I²C interface, -40°C to 85°C, 12-VFDFN exposed pad (2.5x4 mm).","salesMarkdown":"It reports state-of-charge, voltage, current, and temperature over an I²C interface to a host controller. The 12-VFDFN exposed-pad package (2.5x4 mm) keeps the footprint small for portable designs — think power tools, handheld medical devices, or IoT endpoints where one series cell is the energy source. The ROHS3 compliance is current, so no exemption sunset to track either. If you are stocking a repair bench, this is still the production part, not a discontinued orphan. ## I²C interface — what it means for firmware integration The I²C bus is how the host reads the fuel gauge data. There is no SPI or SMBus option on this variant, so the firmware team needs an I²C peripheral available. The Impedance Track algorithm runs on-chip; the host just polls the result registers. No need to offload coulomb counting to the main MCU. The single-cell support is hard-wired — this part does not stack for multi-cell packs, so if the BOM calls for two or four series cells, look at the BQ2084 family instead. ## Package and thermal — the exposed pad matters The 12-VFDFN with exposed pad (12-SON, 2.5x4 mm) needs a thermal via stitch under the pad if the gauge runs continuous high discharge current. The datasheet's recommended land pattern calls for a solder paste coverage of 50–70% on the pad. Surface-mount reflow only — no hand-soldering this one without a hot-air station and a stencil. The cut-tape option is fine for prototype quantities; production orders will land in tape-and-reel.","metaTitle":"BQ27541DRZT-G1 Li-Ion Fuel Gauge, Impedance Track, I²C","metaDescription":"Texas Instruments BQ27541DRZT-G1 single-cell Li-Ion fuel gauge with Impedance Track algorithm. I²C interface, -40°C to 85°C, 12-SON package.","metaKeywords":null},"attributes":{"series":"Impedance Track™","packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"Mfr":"Texas Instruments","Series":"Impedance Track™","Package":"Tape & Reel (TR); Cut Tape (CT)","Function":"Multi-Function Controller","Interface":"I²C","Mounting Type":"Surface Mount","Package / Case":"12-VFDFN Exposed Pad","Product Status":"Active","Number of Cells":"1","lifecycle_stage":"eol_hot","Fault Protection":"Over Temperature","Battery Chemistry":"Lithium Ion","Base Product Number":"BQ27541","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"12-SON (2.5x4)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$8.0500","priceTiers":[{"qty":1,"price":"$8.05000","currency":"USD"},{"qty":10,"price":"$7.26800","currency":"USD"},{"qty":25,"price":"$6.92960","currency":"USD"},{"qty":100,"price":"$6.01700","currency":"USD"},{"qty":250,"price":"$5.74656","currency":"USD"},{"qty":500,"price":"$5.23952","currency":"USD"},{"qty":1250,"price":"$4.78350","currency":"USD"}]},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/BQ27541DRZT-G1/alternatives.json"},"ai":{"faq":[{"question":"Does BQ27541DRZT-G1 support I²C interface?","answer":"Yes, the BQ27541DRZT-G1 communicates over an I²C interface. There is no SPI or SMBus option on this order code."},{"question":"How many cells does BQ27541DRZT-G1 support?","answer":"It supports a single Li-Ion cell. For multi-cell packs (2 to 4 series cells), the BQ2084 family is a functional alternative."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/BQ27541DRZT-G1","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/BQ27541DRZT-G1 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}}