{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BQ25731RSNR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"BQ25731RSNR","canonicalUrl":"https://icboms.com/texas-instruments/BQ25731RSNR","factsUrl":"https://icboms.com/api/mcp/products/BQ25731RSNR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments BQ25731RSNR, I²C-controlled NVDC buck-boost battery charger, 1-5 cell multi-chemistry, 16.2A max charge current, 26V max supply, 32-WFQFN Exposed Pad, -40°C to 85°C.","salesMarkdown":"## Buck-boost charger with I²C programmability for 1-5 cell packs The Texas Instruments BQ25731RSNR is an I²C-controlled, NVDC (narrow-voltage DC) buck-boost battery charger designed for multi-chemistry battery packs of 1 to 5 series cells. The charger integrates over-current, over-temperature, and over-voltage fault protection, and is packaged in a 32-pin WFQFN with exposed pad for thermal management. ## 16.2A charge current — sizing the power stage The 16.2A maximum charge current is the headline rating for this part. That level of current targets battery packs in the 2-5 cell range where fast charging is required. The constant-current programming is set via I²C, so the charge profile can be adjusted in firmware without a resistor change.","metaTitle":"BQ25731RSNR I²C Buck-Boost Battery Charger, 16.2A Max","metaDescription":"Texas Instruments BQ25731RSNR I²C-controlled buck-boost charger for 1-5 cell multi-chemistry batteries. 16.2A max charge current, 26V supply, 32-QFN.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","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":"32-WFQFN Exposed Pad","Product Status":"Active","Number of Cells":"1 ~ 5","lifecycle_stage":"eol_hot","Fault Protection":"Over Current, Over Temperature, Over Voltage","Battery Chemistry":"Multi-Chemistry","Current - Charging":"Constant - Programmable","Base Product Number":"BQ25731","Battery Pack Voltage":"9V ~ 12.6V","Charge Current - Max":"16.2A","Operating Temperature":"-40°C~85°C","Programmable Features":"Current, Voltage","Voltage - Supply (Max)":"26V","Supplier Device Package":"32-QFN (4x4)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.7900","priceTiers":[{"qty":1,"price":"$3.79000","currency":"USD"},{"qty":10,"price":"$3.40600","currency":"USD"},{"qty":25,"price":"$3.21960","currency":"USD"},{"qty":100,"price":"$2.79040","currency":"USD"},{"qty":250,"price":"$2.64736","currency":"USD"},{"qty":500,"price":"$2.37546","currency":"USD"},{"qty":1000,"price":"$2.02500","currency":"USD"},{"qty":3000,"price":"$2.02500","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/aed81d873baa9f70728e5902b1d97125.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/BQ25731RSNR/alternatives.json"},"ai":{"faq":[{"question":"Does BQ25731RSNR support 1-cell batteries?","answer":"Yes, the BQ25731RSNR supports 1 to 5 series cells, covering 1-cell Li-ion packs as well as higher-voltage configurations."},{"question":"Is BQ25731RSNR a buck-boost charger?","answer":"Yes, the BQ25731RSNR is a buck-boost charger, as indicated by its NVDC (narrow-voltage DC) architecture, which allows it to regulate the output voltage when the input supply is above or below the battery voltage."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/BQ25731RSNR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/BQ25731RSNR 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}}