{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BQ25730RSNR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"BQ25730RSNR","canonicalUrl":"https://icboms.com/texas-instruments/BQ25730RSNR","factsUrl":"https://icboms.com/api/mcp/products/BQ25730RSNR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments BQ25730RSNR, I²C-controlled buck-boost battery charger, 1-5 cells, 16.2A max charge current, 26V supply max, 32-WFQFN exposed pad, -40°C to 85°C.","salesMarkdown":"## 16.2 A buck-boost charger with I²C programmability The BQ25730RSNR is a buck-boost battery charger from Texas Instruments that handles 1 to 5 series cells with a programmable charge current up to 16.2 A. The I²C interface lets you set the charge current and voltage in firmware, so you can tune the charging profile for different battery chemistries without swapping resistors. Input voltage tolerance goes up to 26 V, which covers common power bricks from 5 V to 24 V, including USB-C PD adapters. The buck-boost topology means it can charge a multi-cell pack even when the input voltage is lower than the battery voltage — useful for 2S or 3S packs from a 5 V USB source. ## Fault protection and thermal footprint On-chip over-current, over-temperature, and over-voltage protection reduce the need for external supervisory circuits.","metaTitle":"BQ25730RSNR I²C 1-5 Cell Buck-Boost Charger, 16.2A Max","metaDescription":"Texas Instruments BQ25730RSNR: I²C-controlled buck-boost battery charger for 1-5 cells, 16.2A max charge current, 26V input, 32-QFN, active production.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"Not applicable","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":"BQ25730","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":"$3.9300","priceTiers":[{"qty":1,"price":"$3.93000","currency":"USD"},{"qty":10,"price":"$3.53400","currency":"USD"},{"qty":25,"price":"$3.34040","currency":"USD"},{"qty":100,"price":"$2.89520","currency":"USD"},{"qty":250,"price":"$2.74668","currency":"USD"},{"qty":500,"price":"$2.46460","currency":"USD"},{"qty":1000,"price":"$2.07858","currency":"USD"},{"qty":3000,"price":"$1.97465","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/1626a18faa494b28481163aa5ab00c9f.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/BQ25730RSNR/alternatives.json"},"ai":{"faq":[{"question":"What is the maximum charge current of the BQ25730RSNR?","answer":"The maximum programmable charge current is 16.2 A, set via the I²C interface. The actual current in your design will depend on the input power source, PCB thermal design, and battery impedance."},{"question":"What battery chemistries does the BQ25730RSNR support?","answer":"It supports multi-chemistry charging — Li-ion, LiFePO4, lead-acid, and others — because the charge voltage and current are programmable via I²C. The battery pack voltage range is 9 V to 12.6 V for a typical 3S Li-ion configuration."},{"question":"What package does the BQ25730RSNR come in?","answer":"It is supplied in a 32-WFQFN with exposed pad, 4x4 mm body (supplier device package 32-QFN)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/BQ25730RSNR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/BQ25730RSNR 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}}