{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BQ24172RGYT","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"BQ24172RGYT","canonicalUrl":"https://icboms.com/texas-instruments/BQ24172RGYT","factsUrl":"https://icboms.com/api/mcp/products/BQ24172RGYT","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments BQ24172RGYT, Li-Ion/Polymer battery charger IC, 1-3 cells, 4A max charge current, 17V max supply, -40 to 85°C, 24-VFQFN Exposed Pad, Surface Mount, Active.","salesMarkdown":"## 4 A charge current, 1–3 cell Li-ion charger in a 24-VQFN The Texas Instruments BQ24172RGYT is a synchronous switch-mode Li-Ion and Li-Polymer battery charger IC that handles 1 to 3 series cells. Its 4 A maximum charge current suits medium-power portable equipment, power tools, and medical devices where charge time matters. The 17 V input ceiling allows it to run from common 12 V adapter rails or USB-C PD sources with headroom. ## Programmable charge current and integrated fault protection Charge current is constant and programmable via an external resistor — no I2C bus needed, which simplifies the BOM for designs that just need a set-and-forget charge profile. The IC integrates over-current, over-temperature, and over-voltage fault protection, reducing the need for discrete supervisory components around the battery path.","metaTitle":"BQ24172RGYT Li-Ion Charger IC, 4A, 1-3 Cells, 24-VQFN","metaDescription":"Texas Instruments BQ24172RGYT is a 4A max charge current Li-Ion/Polymer charger IC for 1-3 cells. 17V max supply, -40 to 85°C, 24-VQFN. 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":"BQ24172","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/0430f7feecc292ef9ab6ebeae8cd2668.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Does BQ24172RGYT support 2-cell Li-ion batteries?","answer":"Yes. The BQ24172RGYT supports 1 to 3 series cells, so a 2-cell (7.4 V nominal) pack is within its operating range. The battery pack voltage is 2.1 V per cell, and the charger regulates the output accordingly."},{"question":"What is the difference between BQ24172RGYT and BQ24172RGYR?","answer":"The BQ24172RGYT and BQ24172RGYR share the same base product number BQ24172 and identical electrical specifications. Both are surface-mount in the same 24-VFQFN Exposed Pad package."},{"question":"How do I program the charge current for BQ24172RGYT?","answer":"The charge current is programmable via an external resistor connected to the ISET pin. The IC uses a constant-current charge algorithm — you set the resistor value per the formula in the datasheet to achieve the desired current up to the 4 A maximum."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/BQ24172RGYT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/BQ24172RGYT 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}}