{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BQ27501DRZR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"BQ27501DRZR","canonicalUrl":"https://icboms.com/texas-instruments/BQ27501DRZR","factsUrl":"https://icboms.com/api/mcp/products/BQ27501DRZR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments BQ27501DRZR, Impedance Track™ Battery Monitor, I²C interface, 1-cell Li-Ion, -40°C to 85°C, 12-VFDFN Exposed Pad, Surface Mount.","salesMarkdown":"## Single-cell Li-Ion fuel gauge with Impedance Track™ The Texas Instruments BQ27501DRZR is a battery monitor IC from the Impedance Track™ series, designed to report the state-of-charge of a single-cell Lithium Ion battery pack over an I²C interface. It integrates the fuel-gauging algorithm that learns the battery's impedance over time, so the reported capacity stays accurate as the cell ages. ## What the single-cell limit means for your BOM The BQ27501DRZR is specified for a single-cell Li-Ion pack only. If your design uses a 2-cell or higher series stack, this part will not work — the internal voltage divider and algorithm assume a single-cell voltage range. For multi-cell applications, look at the BQ40Zxx series or a stacked gauge with cell-balancing support. The I²C interface keeps the host-side wiring to two lines (SDA, SCL) plus an interrupt line for the alert output. Pull-up resistors should be sized for the bus capacitance and the target data rate; the datasheet recommends 1.8 kΩ to 10 kΩ for standard-mode operation. ## Package and footprint for layout The BQ27501DRZR comes in a 12-VFDFN Exposed Pad package, also referred to as 12-SON (2.5x4 mm). The 0.50 mm pitch requires a solder-mask-defined pad with a stencil aperture sized for the paste volume — a 0.25 mm aperture is a typical starting point.","metaTitle":"TI BQ27501DRZR Battery Monitor, Impedance Track, I²C","metaDescription":"Texas Instruments BQ27501DRZR battery monitor with Impedance Track™ algorithm. I²C interface, single-cell Li-Ion, -40°C to 85°C, 12-SON package.","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":"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":"BQ27501","Operating Temperature":"-40°C~85°C(TA)","Supplier Device Package":"12-SON (2.5x4)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$5.1030","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://www.ti.com/general/docs/suppproductinfo.tsp?distId=10&gotoUrl=https%3A%2F%2Fwww.ti.com%2Flit%2Fgpn%2Fbq27501","sourceUrl":null},"ai":{"faq":[{"question":"What is the BQ27501DRZR used for?","answer":"It is a battery monitor IC that tracks the state-of-charge of a single-cell Lithium Ion battery pack using the Impedance Track™ algorithm. Typical applications include portable medical devices, handheld instruments, and battery-backed IoT sensors where accurate remaining-capacity reporting is needed."},{"question":"Can BQ27501DRZR be used with a 2-cell battery pack?","answer":"No. The BQ27501DRZR is designed for a single-cell Li-Ion pack only. Using it with a 2-cell series stack will produce incorrect voltage readings and invalid fuel-gauge data."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/BQ27501DRZR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/BQ27501DRZR 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}}