{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BQ24171RGYT","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"BQ24171RGYT","canonicalUrl":"https://icboms.com/texas-instruments/BQ24171RGYT","factsUrl":"https://icboms.com/api/mcp/products/BQ24171RGYT","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments BQ24171RGYT, a synchronous switch-mode Li-Ion/Polymer battery charger IC, 1-3 cells, 4A max charge current, 17V input, surface-mount 24-VQFN exposed-pad package, industrial temperature range.","salesMarkdown":"## What the 4A charge current and 17V input mean for your board The BQ24171RGYT is a synchronous switch-mode Li-Ion/Polymer charger IC from Texas Instruments, supporting 1 to 3 series cells with a programmable constant-current charge up to 4A max. The 17V maximum supply voltage lets it work directly from 5V USB, 12V adapters, or 15V wall warts without an external pre-regulator — a practical simplification for multi-voltage-input designs. Charge current is programmable via an external sense resistor, so the same IC can serve a 500 mA wearable and a 4A tablet charger by changing one resistor value. ## Industrial temperature range and fault protection Built-in over-voltage, over-current, and over-temperature fault protection reduces the external component count for safety certification and protects the battery pack from abuse conditions. ## Package and thermal layout note A four-layer board with thermal vias under the pad is the standard approach. ## Lifecycle and sourcing posture Available in Tape & Reel (TR) or Cut Tape (CT) options — the CT variant suits prototype and low-volume builds; TR is standard for production reels.","metaTitle":"BQ24171RGYT - Texas Instruments Li-Ion/Polymer Battery","metaDescription":"Texas Instruments BQ24171RGYT — Li-Ion/Polymer charger, 1-3 cells, 4A max, 17V input, industrial temp, Active.","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":"$5.8300","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/11a27c4e930bf7e1d2cab02700d9e6cd.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the difference between BQ24171RGYT and BQ24171RGYR?","answer":"Both share the same base product number BQ24171 and identical electrical specifications. The suffix difference is packaging: RGYT is Tape & Reel (TR) or Cut Tape (CT), while RGYR is typically the same 24-VQFN package in a different reel format. Confirm the exact reel quantity and tape width with your distributor — the IC itself is the same die."},{"question":"Can BQ24171RGYT charge a single-cell Li-Ion battery?","answer":"Yes — the BQ24171 supports 1 to 3 series cells. For a single-cell application, configure the cell-count pin (VSEL) to the 1-cell setting. The 2.1V minimum battery pack voltage is well below a single-cell Li-Ion's empty voltage (~3.0V), so charging starts correctly."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/BQ24171RGYT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/BQ24171RGYT 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}}