{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BQ769142PFBR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"BQ769142PFBR","canonicalUrl":"https://icboms.com/texas-instruments/BQ769142PFBR","factsUrl":"https://icboms.com/api/mcp/products/BQ769142PFBR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments BQ769142PFBR, Multi-Function Battery Monitor Controller, I²C, 3 ~ 14 Cells, Lithium Ion/Polymer, Over/Under Voltage Protection, -40°C ~ 85°C, 48-TQFP (7x7), Surface Mount.","salesMarkdown":"## Battery monitor for 3-to-14-cell Li-ion packs The Texas Instruments BQ769142PFBR is a multi-function battery monitor controller designed for 3-to-14-cell series lithium-ion and lithium-polymer battery packs. It integrates over-voltage and under-voltage fault protection, communicates over an I²C interface, and is packaged in a 48-TQFP (7x7 mm) for surface-mount assembly. ## Cell-count flexibility and fault protection The 3-to-14-cell range is the primary selection parameter: a 7-cell pack and a 13-cell pack both fall within the same BOM line, simplifying inventory for a product family that scales stack voltage. The integrated over/under-voltage fault protection means the controller can independently trigger a protection FET or alarm without waiting for the host MCU, which reduces software latency in a fault event. ## I²C interface and host communication The I²C interface is used for configuring protection thresholds, reading cell voltages, and reporting fault status. This is a standard two-wire bus that any MCU with an I²C peripheral can talk to, so no special protocol license or dedicated SPI port is needed. For a firmware engineer, the first-power check is confirming the I²C address and that the bus pull-ups are sized for the bus capacitance of the 48-TQFP package. ## Active lifecycle — no EOL risk for new designs For a BOM cost engineer, this also means dual-sourcing is possible through multiple distribution legs, reducing single-source exposure. ## Package and assembly notes The 48-TQFP (7x7 mm) package has a 0.5 mm pitch, which is inspectable under a standard microscope and reworkable with a hot-air station. The exposed pad on the bottom of the TQFP is the thermal and electrical ground connection; a via stitch under the pad improves thermal dissipation if the controller is running continuous measurements near the 85°C end of the temperature range. ## Compatibility with lithium polymer chemistry The battery chemistry is specified as lithium ion/polymer, so the BQ769142PFBR is directly compatible with lithium polymer pouch cells. The same over/under-voltage thresholds can be configured for the typical 4.2 V/cell full-charge and 2.8-3.0 V/cell cut-off voltages used with LiPo packs. No external level shifting or chemistry-specific front-end is required.","metaTitle":"BQ769142PFBR Battery Monitor IC, 3-14 Cell Li-Ion/Polymer","metaDescription":"Texas Instruments BQ769142PFBR multi-function battery monitor controller. I²C interface, 3-14 cells, over/under-voltage protection, -40°C to 85°C.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"Not applicable","productStatus":"Active","categoryPath":["Logic ICs"],"specifications":{"Package":"Tape & Reel (TR); Cut Tape (CT)","Function":"Multi-Function Controller","Interface":"I²C","Mounting Type":"Surface Mount","Package / Case":"48-TQFP","Number of Cells":"3 ~ 14","lifecycle_stage":"eol_hot","Fault Protection":"Over/Under Voltage","Battery Chemistry":"Lithium Ion/Polymer","Operating Temperature":"-40°C ~ 85°C (TA)","Supplier Device Package":"48-TQFP (7x7)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$5.34","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$5.34000","currency":"USD"},{"qty":10,"price":"$4.79600","currency":"USD"},{"qty":25,"price":"$4.53360","currency":"USD"},{"qty":100,"price":"$3.92920","currency":"USD"},{"qty":250,"price":"$3.72764","currency":"USD"},{"qty":500,"price":"$3.34482","currency":"USD"},{"qty":1000,"price":"$2.82093","currency":"USD"},{"qty":2000,"price":"$2.67989","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/34839da8f0d051548b1bec6ce9c7309a.pdf","sourceUrl":null},"ai":{"faq":[{"question":"How many cells can BQ769142PFBR monitor?","answer":"The BQ769142PFBR monitors 3 to 14 series-connected lithium-ion or lithium-polymer cells. This covers a wide range of pack voltages from about 11.1 V (3S) to 51.8 V (14S) nominal."},{"question":"Is BQ769142PFBR compatible with lithium polymer batteries?","answer":"Yes, the battery chemistry is specified as lithium ion/polymer, so it is directly compatible with lithium polymer pouch cells. The protection thresholds can be configured for typical LiPo voltage ranges."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/BQ769142PFBR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/BQ769142PFBR 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}}