{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BQ27542DRZR-G1","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"BQ27542DRZR-G1","canonicalUrl":"https://icboms.com/texas-instruments/BQ27542DRZR-G1","factsUrl":"https://icboms.com/api/mcp/products/BQ27542DRZR-G1","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments Impedance Track™ series, BQ27542DRZR-G1, Li-Ion battery monitor, single-cell, HDQ/I²C interface, 12-VFDFN exposed pad package","salesMarkdown":"## Single-cell fuel gauge with Impedance Track The BQ27542DRZR-G1 is a single-cell Li-Ion battery monitor from Texas Instruments' Impedance Track™ series. It reports state-of-charge through either an HDQ or I²C serial interface. The 12-VFDFN exposed-pad package keeps the footprint small — 2.5x4 mm in the 12-SON variant — which matters when the battery pack PCB has no room for a larger QFN. It does not cover the automotive under-hood band — that is the BQ79612PAPRQ1's territory with its -40°C to 125°C rating. ## What the single-cell spec means for your BOM The BQ27542DRZR-G1 is hard-limited to one series cell. If your pack is 2-cell or higher, this part will not work — you need a multi-cell gauge like the BQ2084DBT-V143, which handles 2 to 4 cells. The interface choice (HDQ vs I²C) is a firmware fork: HDQ is TI-proprietary and needs a dedicated GPIO bit-bang, while I²C is standard and shares the bus with other peripherals. The base product number is BQ27542, so future die revisions or package variants will carry the same base number — watch for a suffix change if TI issues a PCN.","metaTitle":"BQ27542DRZR-G1 Battery Fuel Gauge – TI Impedance Track","metaDescription":"Texas Instruments BQ27542DRZR-G1 single-cell Li-Ion battery monitor with Impedance Track™. HDQ/I²C interface, 12-SON package, -40°C to 85°C. Active production.","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":"Battery Monitor","Interface":"HDQ, I²C","Mounting Type":"Surface Mount","Package / Case":"12-VFDFN Exposed Pad","Product Status":"Active","Number of Cells":"1","lifecycle_stage":"eol_hot","Fault Protection":"-","Battery Chemistry":"Lithium Ion","Base Product Number":"BQ27542","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"12-SON (2.5x4)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4.2100","priceTiers":[{"qty":1,"price":"$4.21000","currency":"USD"},{"qty":10,"price":"$3.78400","currency":"USD"},{"qty":25,"price":"$3.57760","currency":"USD"},{"qty":100,"price":"$3.10050","currency":"USD"},{"qty":250,"price":"$2.94152","currency":"USD"},{"qty":500,"price":"$2.63940","currency":"USD"},{"qty":1000,"price":"$2.25000","currency":"USD"},{"qty":3000,"price":"$2.25000","currency":"USD"}]},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/BQ27542DRZR-G1/alternatives.json"},"ai":{"faq":[{"question":"Can the BQ27542DRZR-G1 be used with a 2-cell Li-Ion battery pack?","answer":"No. The BQ27542DRZR-G1 is a single-cell monitor. For 2-cell packs, look at the BQ2084DBT-V143, which supports 2 to 4 cells."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/BQ27542DRZR-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/BQ27542DRZR-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}}