{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BQ25040DQCT","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"BQ25040DQCT","canonicalUrl":"https://icboms.com/texas-instruments/BQ25040DQCT","factsUrl":"https://icboms.com/api/mcp/products/BQ25040DQCT","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments BQ25040DQCT, single-cell Li-Ion linear charger IC, 1.1A max programmable charge current, 4.2V battery termination, over-voltage and over-temperature protection, 10-WSON (3x2) package, active production.","salesMarkdown":"## Single-cell Li-Ion linear charger with 1.1A ceiling The Texas Instruments BQ25040DQCT is a linear charger IC designed for single-cell Lithium Ion battery packs, terminating at 4.2V. The maximum charge current is programmable up to 1.1A, set by an external resistor — the actual charge current is the designer's call, not a fixed output. The 6.7V supply ceiling means it runs comfortably from a 5V USB rail or a regulated 5V supply, but not from a 12V bus without a step-down preregulator. ## Fault protection set and thermal envelope On-chip fault protection covers over-voltage at the battery pin and over-temperature at the junction. No official second-source or pin-compatible alternate is listed in the TI portfolio — the BQ25040 family shares the same base number, so a different package variant (e.g., BQ25040DQCR) may be footprint-compatible but should be verified against the BOM position.","metaTitle":"BQ25040DQCT Li-Ion Charger IC, 1.1A Max, 10-WSON","metaDescription":"Texas Instruments BQ25040DQCT single-cell Li-Ion linear charger with 1.1A programmable current, over-voltage and over-temperature protection.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"Mfr":"Texas Instruments","Series":"-","Package":"Tape & Reel (TR); Cut Tape (CT)","Interface":"-","Mounting Type":"Surface Mount","Package / Case":"10-WFDFN Exposed Pad","Product Status":"Active","Number of Cells":"1","lifecycle_stage":"eol_hot","Fault Protection":"Over Temperature, Over Voltage","Battery Chemistry":"Lithium Ion","Current - Charging":"Constant - Programmable","Base Product Number":"BQ25040","Battery Pack Voltage":"4.2V","Charge Current - Max":"1.1A","Operating Temperature":"0°C~125°C(TJ)","Programmable Features":"-","Voltage - Supply (Max)":"6.7V","Supplier Device Package":"10-WSON (3x2)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.9100","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/0a651c513a993cbda02d6f7e9d436035.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the charge current of BQ25040DQCT?","answer":"The maximum charge current is 1.1A, programmable via an external resistor. The actual current setpoint is determined by the resistor value; the 1.1A figure is the ceiling, not the default."},{"question":"Is BQ25040DQCT compatible with single cell Li-Ion?","answer":"Yes, it is designed for single-cell Lithium Ion batteries with a 4.2V termination voltage."},{"question":"Does BQ25040DQCT have overvoltage protection?","answer":"Yes, the part includes over-voltage protection on the battery pin, along with over-temperature protection."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/BQ25040DQCT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/BQ25040DQCT 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}}