{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BQ771807DPJR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"BQ771807DPJR","canonicalUrl":"https://icboms.com/texas-instruments/BQ771807DPJR","factsUrl":"https://icboms.com/api/mcp/products/BQ771807DPJR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments BQ771807DPJR, Battery Protection IC, Li-Ion 2-5 Cells, Over Voltage Protection, Surface Mount, 8-WDFN Exposed Pad, -40°C ~ 110°C.","salesMarkdown":"## Part overview — what the BQ771807DPJR does on a Li-ion pack The Texas Instruments BQ771807DPJR is a dedicated battery protection IC for lithium-ion packs built from 2 to 5 series cells. It monitors each cell voltage and triggers a fault output when any cell exceeds the over-voltage threshold — a single-purpose protector, not a full fuel gauge or secondary protector with over-current or over-temperature detection. The part comes in an 8-WSON (3x4) package with an exposed pad for thermal relief, and operates over a -40°C to 110°C range that covers the internal environment of a sealed battery pack. ## What the ratings mean for the BOM The 2-5 cell range is the headline selection parameter: this IC fits a 2S to 5S Li-ion pack. If your BOM calls for a 1S or 6S+ protector, this part does not fit — the BQ79612PAPRQ1 covers single-cell automotive applications. The over-voltage-only fault protection means the designer must add separate over-current (fuse, PTC, or current-sense supervisor) and over-temperature (NTC + comparator) protection externally. The -40°C to 110°C operating range is wide enough for most portable and light industrial packs, but a hot engine-bay or downhole application would exceed the 110°C ceiling. ## Package and mounting — what to expect on the board The 8-WSON (3x4) package with exposed pad is a small, leadless DFN. The exposed pad must be soldered to a PCB thermal land and connected to the ground plane for heat sinking. Stencil aperture design for the pad is critical — too little solder and the part lifts during reflow; too much and the pad floats. Tape & Reel (TR) and Cut Tape (CT) options are available, so the part can be ordered in production reels or small quantities for prototyping.","metaTitle":"BQ771807DPJR Battery Protection IC, Li-Ion 2-5 Cells, 8-WSON","metaDescription":"TI BQ771807DPJR battery protection IC for 2-5 series Li-Ion cells. Over-voltage fault protection in 8-WSON (3x4) package. Active production, ROHS3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Package":"Tape & Reel (TR); Cut Tape (CT)","Function":"Battery Protection","Mounting Type":"Surface Mount","Package / Case":"8-WDFN Exposed Pad","Number of Cells":"2 ~ 5","lifecycle_stage":"eol_hot","Fault Protection":"Over Voltage","Battery Chemistry":"Lithium Ion","Operating Temperature":"-40°C ~ 110°C (TA)","Supplier Device Package":"8-WSON (3x4)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.51","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.51000","currency":"USD"},{"qty":10,"price":"$1.34800","currency":"USD"},{"qty":25,"price":"$1.27920","currency":"USD"},{"qty":100,"price":"$1.05080","currency":"USD"},{"qty":250,"price":"$0.98224","currency":"USD"},{"qty":500,"price":"$0.86804","currency":"USD"},{"qty":1000,"price":"$0.68529","currency":"USD"},{"qty":3000,"price":"$0.64650","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/86132f03e7053d8fb5c9abb540348b68.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is BQ771807DPJR compatible with 2 cells?","answer":"Yes, the BQ771807DPJR supports 2 to 5 series lithium-ion cells. It can protect a 2S pack."},{"question":"What are the alternatives to BQ771807DPJR?","answer":"The BQ79612PAPRQ1 is a different class of part — an automotive-grade single-cell battery monitor with SPI/UART interface, not a direct functional equivalent. No pin-compatible second source is listed for the BQ771807DPJR."},{"question":"What is BQ771807DPJR used for?","answer":"It is a battery protection IC that monitors over-voltage conditions on 2 to 5 series lithium-ion cells. Typical use is inside a battery pack to trigger a disconnect or alarm when any cell exceeds its safe voltage."},{"question":"How many cells does BQ771807DPJR support?","answer":"It supports 2 to 5 series lithium-ion cells."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/BQ771807DPJR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/BQ771807DPJR when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-13T19:39:56.676Z","lastPublished":"2026-07-13T19:39:56.676Z","indexable":true}}