{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BQ29441DRBT","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"BQ29441DRBT","canonicalUrl":"https://icboms.com/texas-instruments/BQ29441DRBT","factsUrl":"https://icboms.com/api/mcp/products/BQ29441DRBT","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments BQ29441DRBT battery protection IC, Li-Ion, 2-4 cell, over-voltage fault protection, 8-VDFN exposed pad, 8-SON (3x3), -40 to 110°C, Tape & Reel.","salesMarkdown":"## Li-Ion stack monitor for 2-4 series cells The BQ29441DRBT is a dedicated battery protection IC from Texas Instruments, designed to monitor and protect 2 to 4 series-connected lithium-ion cells against over-voltage conditions. It operates across a -40°C to 110°C temperature range, making it suitable for both consumer and industrial battery packs that see thermal cycling. ## Over-voltage watchdog with no external MCU dependency The fault protection is limited to over-voltage detection — the IC does not handle over-current, short-circuit, or under-voltage on its own. That means the BOM still needs a separate fuel gauge or protector for those functions. With a 2-4 cell range, it covers common 7.2 V to 14.8 V nominal packs (2S through 4S) used in power tools, e-bikes, and portable medical gear. ## 8-SON footprint — board layout note The exposed pad is the primary thermal path, not the leads. Surface-mount assembly with the exposed pad requires a solder stencil aperture that covers at least 50% of the pad area to avoid voids and ensure thermal transfer.","metaTitle":"BQ29441DRBT Battery Protection IC, 2-4 Cell Li-Ion, 8-SON","metaDescription":"Texas Instruments BQ29441DRBT Li-Ion battery protection IC for 2-4 cells, over-voltage protection, -40 to 110°C, 8-SON package.","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-VDFN Exposed Pad","Number of Cells":"2 ~ 4","lifecycle_stage":"eol_hot","Fault Protection":"Over Voltage","Battery Chemistry":"Lithium Ion","Operating Temperature":"-40°C ~ 110°C (TA)","Supplier Device Package":"8-SON (3x3)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.0","priceTiers":[{"qty":1,"price":"$3.00000","currency":"USD"},{"qty":10,"price":"$2.69200","currency":"USD"},{"qty":25,"price":"$2.54480","currency":"USD"},{"qty":100,"price":"$2.20550","currency":"USD"},{"qty":250,"price":"$2.09240","currency":"USD"},{"qty":500,"price":"$1.87750","currency":"USD"},{"qty":1250,"price":"$1.60050","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/bfac61e0dadb4b339fd9c7b855fd0c4c.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/BQ29441DRBT/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/BQ29441DRBT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/BQ29441DRBT 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}}