{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BQ25792RQMR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"BQ25792RQMR","canonicalUrl":"https://icboms.com/texas-instruments/BQ25792RQMR","factsUrl":"https://icboms.com/api/mcp/products/BQ25792RQMR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments BQ25792RQMR, I2C-controlled Li-Ion/Polymer battery charger, 1-4 cells, 5A max charge current, 24V max supply, 29-VQFN-HR (4x4) package, -40°C to 85°C operation.","salesMarkdown":"## I2C-controlled multi-cell charger for portable and industrial gear The Texas Instruments BQ25792RQMR is a switch-mode battery charger IC that handles 1 to 4 series Li-Ion or Li-Polymer cells with a programmable charge current up to 5 A. It accepts an input voltage up to 24 V, which covers USB PD adapters and higher-voltage wall warts without an extra pre-regulator. The I²C interface lets the system microcontroller set the charge current, voltage, and timer thresholds on the fly — useful for multi-chemistry packs or adaptive fast-charge profiles. ## 5 A charge current and cell-count flexibility The 5 A maximum charge current is the headline number, but the real-world limit depends on the thermal design of the 29-VQFN-HR (4x4 mm) package and the board’s copper pour. For a 2-cell pack at 5 A, the power dissipation in the internal FETs will push the junction temperature — plan for adequate thermal vias under the exposed pad. The 1-to-4 cell range means the same BOM can serve a single-cell power bank and a 4-cell power tool charger with only firmware changes. Fault protection covers over-current, over-voltage, and short-circuit conditions on the battery and input rails. The constant-current / constant-voltage profile is standard Li-Ion charging, but the programmable timer prevents a stuck cell from cooking if the termination current is never reached.","metaTitle":"TI BQ25792RQMR I2C Battery Charger, 5A, 1-4 Cells, 29-VQFN","metaDescription":"Texas Instruments BQ25792RQMR I2C-controlled Li-Ion/Polymer charger. Max 5A charge current, 1-4 cells, 24V input. Active production.","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":"I²C","Mounting Type":"Surface Mount","Package / Case":"29-VFQFN","Product Status":"Active","Number of Cells":"1 ~ 4","lifecycle_stage":"eol_hot","Fault Protection":"Over Current, Over Voltage, Short Circuit","Battery Chemistry":"Lithium Ion/Polymer","Current - Charging":"Constant - Programmable","Base Product Number":"BQ25792","Battery Pack Voltage":"18.8V (Max)","Charge Current - Max":"5A","Operating Temperature":"-40°C~85°C(TJ)","Programmable Features":"Current, Timer, Voltage","Voltage - Supply (Max)":"24V","Supplier Device Package":"29-VQFN-HR (4x4)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$6.3600","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://www.ti.com/general/docs/suppproductinfo.tsp?distId=10&gotoUrl=http%3A%2F%2Fwww.ti.com%2Flit%2Fgpn%2Fbq25792","sourceUrl":null},"ai":{"faq":[{"question":"What is the maximum charge current for BQ25792RQMR?","answer":"The BQ25792RQMR supports a programmable charge current up to 5 A maximum."},{"question":"How many cells does BQ25792RQMR support?","answer":"It charges 1 to 4 series Li-Ion or Li-Polymer cells."},{"question":"What interface does BQ25792RQMR use?","answer":"The charger is controlled via an I²C interface."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/BQ25792RQMR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/BQ25792RQMR 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}}