{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BQ2084DBT-V143","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"BQ2084DBT-V143","canonicalUrl":"https://icboms.com/texas-instruments/BQ2084DBT-V143","factsUrl":"https://icboms.com/api/mcp/products/BQ2084DBT-V143","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments BQ2084DBT-V143, Battery Monitor IC, SMBus interface, 2-4 Li-ion/Polymer cells, 38-TFSOP (0.173\", 4.40mm Width) package, Surface Mount, -20°C to 85°C operating temperature.","salesMarkdown":"## What this gas gauge does and where it fits The Texas Instruments BQ2084DBT-V143 is a battery monitor IC — a gas gauge — designed to work alongside the BQ29312 analog front-end for Li-ion and Li-polymer battery packs. It communicates over SMBus, reporting remaining capacity, voltage, and temperature data to a host controller. The part monitors 2 to 4 series cells, making it a fit for notebook, portable instrument, and medical-device battery packs where the host needs accurate state-of-charge information without running its own coulomb-counting algorithm. ## Integration note: pairing with the BQ29312 The BQ2084DBT-V143 is described as a gas gauge for the BQ29312. In a typical design, the BQ29312 handles cell balancing, overvoltage/undervoltage protection, and the primary analog measurement path, while the BQ2084DBT-V143 runs the fuel-gauging algorithm and communicates over SMBus. The two parts share a common I²C-like bus and a set of control signals. If you are replacing a failed gauge on an existing BQ29312-based board, this part is the intended mate. For a new design, verify that the BQ29312 is still available and that the combined BOM cost fits your target.","metaTitle":"BQ2084DBT-V143 Battery Monitor IC, SMBus, 38-TSSOP","metaDescription":"TI BQ2084DBT-V143 gas gauge IC for Li-ion/polymer packs, 2-4 cells, SMBus interface, -20°C to 85°C, 38-TSSOP. Active production, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Signal Isolation"],"specifications":{"Package":"Tube","Function":"Battery Monitor","Interface":"SMBus","Mounting Type":"Surface Mount","Package / Case":"38-TFSOP (0.173\\\", 4.40mm Width)","Number of Cells":"2 ~ 4","lifecycle_stage":"eol_hot","Battery Chemistry":"Lithium Ion/Polymer","Operating Temperature":"-20°C ~ 85°C (TA)","Supplier Device Package":"38-TSSOP"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$19.57","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$19.57000","currency":"USD"},{"qty":10,"price":"$18.04800","currency":"USD"},{"qty":25,"price":"$17.23680","currency":"USD"},{"qty":100,"price":"$15.41190","currency":"USD"},{"qty":250,"price":"$14.70212","currency":"USD"},{"qty":500,"price":"$13.99236","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/a0113b1a5071c9c3f53fa1ca44d67293.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is BQ2084DBT-V143 compatible with BQ29312?","answer":"Yes, the BQ2084DBT-V143 is specifically described as a gas gauge IC for the BQ29312 analog front-end. They are designed to work together in a Li-ion battery pack monitoring system."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/BQ2084DBT-V143","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/BQ2084DBT-V143 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}}