{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BQ24171RGYR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"BQ24171RGYR","canonicalUrl":"https://icboms.com/texas-instruments/BQ24171RGYR","factsUrl":"https://icboms.com/api/mcp/products/BQ24171RGYR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments BQ24171RGYR, Li-Ion/Polymer battery charger, 4A max charge current, 1-3 cells, 17V supply max, -40°C to 85°C, 24-VQFN Exposed Pad package.","salesMarkdown":"## 4A programmable charger for 1-3 cell Li-ion packs The Texas Instruments BQ24171RGYR is a constant-current, constant-voltage Li-Ion/Polymer charger IC that handles 1 to 3 series cells with a programmable charge current up to 4A. The 17V maximum input voltage lets it work off 5V USB, 12V automotive, or unregulated wall adapters without a pre-regulator — a practical fit for portable instruments, power tools, and medical equipment that share a common charger platform. The 4A maximum charge current is programmable, so you can set the rate to match the cell capacity and thermal budget of your enclosure — a 2 Ah pack can charge at 0.5C (1A) or 2C (4A) depending on the cell datasheet limits and your cooling. The 1-3 cell support covers single-cell handhelds, two-cell power-tool packs, and three-cell medical or industrial battery stacks, all with the same IC and a resistor change. On-chip fault protection for over-current, over-temperature, and over-voltage reduces external monitoring circuitry and simplifies the safety review for battery-powered products that need UL or IEC 62368 compliance. ## Lifecycle and sourcing No official second-source or pin-compatible replacement is listed, so the BOM should treat this as a single-sourced line item.","metaTitle":"BQ24171RGYR Li-Ion Battery Charger, 4A, 1-3 Cells, VQFN-24","metaDescription":"Texas Instruments BQ24171RGYR Li-Ion/Polymer charger IC: 4A max charge current, 1-3 cells, 17V input, -40°C to 85°C. Active lifecycle.","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":"24-VFQFN Exposed Pad","Product Status":"Active","Number of Cells":"1 ~ 3","lifecycle_stage":"eol_hot","Fault Protection":"Over Current, Over Temperature, Over Voltage","Battery Chemistry":"Lithium Ion/Polymer","Current - Charging":"Constant - Programmable","Base Product Number":"BQ24171","Battery Pack Voltage":"2.1V","Charge Current - Max":"4A","Operating Temperature":"-40°C~85°C(TA)","Programmable Features":"Current","Voltage - Supply (Max)":"17V","Supplier Device Package":"24-VQFN (5.5x3.5)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4.8600","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/11a27c4e930bf7e1d2cab02700d9e6cd.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the maximum charge current of BQ24171RGYR?","answer":"The BQ24171RGYR supports a programmable charge current up to 4A, set by an external resistor."},{"question":"Is BQ24171RGYR compatible with 2-cell Li-ion batteries?","answer":"Yes — the part supports 1 to 3 series cells, so a 2-cell (7.4V nominal) pack is within its range."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/BQ24171RGYR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/BQ24171RGYR 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}}