{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BQ25306RTER","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"BQ25306RTER","canonicalUrl":"https://icboms.com/texas-instruments/BQ25306RTER","factsUrl":"https://icboms.com/api/mcp/products/BQ25306RTER","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments BQ25306RTER 2-cell Li-Ion/Polymer charger IC, 3 A max charge current, 9 V battery pack, USB interface, 16-WFQFN exposed pad, -40°C to 85°C.","salesMarkdown":"## 2-cell Li-ion charger with USB input and 3 A ceiling The Texas Instruments BQ25306RTER is a 2-cell Li-ion/polymer battery charger IC that takes a USB input and delivers a programmable charge current up to 3 A to a 9 V battery pack. ## Charge current and cell count — the fit decision The 3 A maximum charge current sets the charge-time floor for a 2-cell pack: a 2000 mAh 2S pack charges at roughly C/0.67, which is fast enough for most field tools but not a supercharger. The 9 V battery pack voltage confirms this is a 2-cell charger — a 1S pack at 4.2 V or a 3S pack at 12.6 V will not terminate correctly. ## USB interface and programmable voltage The USB interface means this charger can be powered from a standard 5 V USB port or a 5 V wall adapter. The programmable voltage feature lets you set the regulation voltage for the 2-cell pack, which is useful if your battery chemistry or cell balance requires a slightly different float voltage than the default. The constant-current charging mode is programmable via an external resistor, giving you control over the charge rate without firmware. ## Package and temperature grade Surface-mount assembly is straightforward with a standard reflow profile for QFN packages.","metaTitle":"BQ25306RTER 2-cell Li-ion charger, 3 A max, USB, 16-WQFN","metaDescription":"TI BQ25306RTER 2-cell Li-ion/polymer charger IC. 3 A max charge current, 9 V battery pack, USB interface, over-voltage protection. -40°C to 85°C.","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":"USB","Mounting Type":"Surface Mount","Package / Case":"16-WFQFN Exposed Pad","Product Status":"Active","Number of Cells":"2","lifecycle_stage":"eol_hot","Fault Protection":"Over Voltage","Battery Chemistry":"Lithium Ion/Polymer","Current - Charging":"Constant - Programmable","Base Product Number":"BQ25306","Battery Pack Voltage":"9V","Charge Current - Max":"3A","Operating Temperature":"-40°C~85°C(TA)","Programmable Features":"Voltage","Voltage - Supply (Max)":"17V","Supplier Device Package":"16-WQFN (3x3)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.3500","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/a5a99ce682268ff3b5f9ecd83afcabc9.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Does the BQ25306RTER work with 2-cell batteries?","answer":"Yes. The BQ25306RTER is designed for 2-cell Li-ion/polymer packs with a nominal 9 V battery pack voltage. It will not properly charge a 1-cell or 3-cell pack."},{"question":"What is the maximum charge current of the BQ25306RTER?","answer":"The maximum charge current is 3 A. The charge current is constant and programmable via an external resistor."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/BQ25306RTER","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/BQ25306RTER 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}}