{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BQ27421YZFT-G1D","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"BQ27421YZFT-G1D","canonicalUrl":"https://icboms.com/texas-instruments/BQ27421YZFT-G1D","factsUrl":"https://icboms.com/api/mcp/products/BQ27421YZFT-G1D","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments BQ27421YZFT-G1D, Impedance Track™ series, Battery Monitor, 1-cell Li-ion, I²C interface, 9-DSBGA, -40°C to 85°C, Tape & Reel.","salesMarkdown":"## Impedance Track™ fuel gauge for single-cell Li-ion packs The BQ27421YZFT-G1D: It targets portable devices where accurate remaining-capacity estimation matters more than a simple voltage-based gauge — think handheld medical instruments, IoT sensors, and consumer electronics that run on a 1S Li-ion pack. ## Single-cell constraint — no 2S support This part is rated for exactly one Li-ion cell. It does not support 2S or higher series stacks. ## Package and footprint — 9-DSBGA The 9-DSBGA package requires a controlled solder-paste stencil and a reflow profile matched to the small bump size. No exposed thermal pad — heat dissipation is through the bumps and the board copper. ## Temperature grade covers portable and indoor industrial Not rated for under-hood automotive or high-temperature industrial enclosures.","metaTitle":"BQ27421YZFT-G1D Battery Monitor, Impedance Track™, 1S Li-ion","metaDescription":"BQ27421YZFT-G1D single-cell Li-ion battery monitor with Impedance Track™ gauge. I²C interface, 9-DSBGA package, -40°C to 85°C.","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":"9-UFBGA, DSBGA","Product Status":"Active","Number of Cells":"1","lifecycle_stage":"eol_hot","Fault Protection":"-","Battery Chemistry":"Lithium Ion","Base Product Number":"BQ27421","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"9-DSBGA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.8290","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/21a7be246ef4b65e44fc22133d69db26.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Does the BQ27421YZFT-G1D work with a single Li-ion cell?","answer":"Yes, it is designed for exactly one Li-ion cell. It does not support 2S or higher series configurations."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/BQ27421YZFT-G1D","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/BQ27421YZFT-G1D 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}}