{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BQ24721CRHBTG4","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"BQ24721CRHBTG4","canonicalUrl":"https://icboms.com/texas-instruments/BQ24721CRHBTG4","factsUrl":"https://icboms.com/api/mcp/products/BQ24721CRHBTG4","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments BQ24721CRHBTG4, multi-chemistry battery charger IC, I²C interface, 3~4 cells, 19.2V max battery pack voltage, 24V supply max, overcurrent protection, -40°C~85°C, 32-VFQFN Exposed Pad package.","salesMarkdown":"## Multi-chemistry charger with I²C control for 3–4 cell packs The Texas Instruments BQ24721CRHBTG4 is a multi-chemistry battery charger IC designed for 3-4 series cells, supporting Li-ion, Li-Po, and other chemistries. It communicates over an I²C interface, allowing the host microcontroller to set charge current, voltage thresholds, and monitor status. The part integrates overcurrent fault protection, reducing external sense circuitry. ## Charge voltage ceiling and supply headroom The maximum battery pack voltage is 19.2V, which covers 4-series Li-ion (nominal 14.8V, full charge 16.8V) and 3-series (nominal 11.1V, full charge 12.6V) with margin. The charger accepts a supply voltage up to 24V, so a standard 19V laptop adapter or a 20V USB-C PD source provides adequate headroom for regulation.","metaTitle":"BQ24721CRHBTG4 battery charger IC, I²C, 3-4 cell, 19.2V max","metaDescription":"Texas Instruments BQ24721CRHBTG4 multi-chemistry battery charger, I²C interface, 3-4 cells, 19.2V max pack voltage, 24V supply, overcurrent protection, -40°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)","Interface":"I²C","Mounting Type":"Surface Mount","Package / Case":"32-VFQFN Exposed Pad","Number of Cells":"3 ~ 4","lifecycle_stage":"eol_hot","Fault Protection":"Over Current","Battery Chemistry":"Multi-Chemistry","Current - Charging":"-","Base Product Number":"BQ24721","Battery Pack Voltage":"19.2V (Max)","Charge Current - Max":"-","Operating Temperature":"-40°C~85°C(TA)","Programmable Features":"Current","Voltage - Supply (Max)":"24V","Supplier Device Package":"32-VQFN (5x5)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/c47328f8e03d9b53aa4a25f20ed4af3e.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is BQ24721CRHBTG4 a direct replacement for BQ24721CRHBR?","answer":"The BQ24721CRHBTG4 and BQ24721CRHBR share the same base product number (BQ24721) and electrical specification, but the suffix indicates different packaging or tape/reel options. The BQ24721CRHBTG4 is supplied in Tape & Reel; the BQ24721CRHBR may differ in reel quantity or carrier width. Confirm the mechanical compatibility with your pick-and-place setup before substituting."},{"question":"Does BQ24721CRHBTG4 support charging of 4 series Li-ion cells?","answer":"Yes. The part is specified for 3 to 4 cells, and the maximum battery pack voltage of 19.2V accommodates a 4-series Li-ion stack (full charge ~16.8V) with headroom."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/BQ24721CRHBTG4","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/BQ24721CRHBTG4 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}}