{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BQ24721RHBTG4","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"BQ24721RHBTG4","canonicalUrl":"https://icboms.com/texas-instruments/BQ24721RHBTG4","factsUrl":"https://icboms.com/api/mcp/products/BQ24721RHBTG4","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments BQ24721RHBTG4, multi-chemistry battery charger, I²C interface, 3–4 cells, 19.2V max pack voltage, 24V supply max, 32-VFQFN exposed pad, -40°C to 85°C.","salesMarkdown":"## Multi-chemistry charger with I²C programmability The Texas Instruments BQ24721RHBTG4 is a multi-chemistry battery charger IC designed for 3 to 4 series cells, with a maximum battery pack voltage of 19.2 V. The I²C interface lets the host system program charge current and set protection thresholds, replacing resistor-strapped configuration on simpler chargers. Overcurrent fault protection is integrated, reducing external supervisory circuitry. Maximum supply voltage is 24 V, which covers the input from a typical 19 V notebook adapter with margin. ## Package and footprint The pad is the primary thermal path — without it, the die temperature rises above the safe operating limit at full charge current. Surface-mount assembly with standard lead-free reflow profiles; the exposed pad demands a solder-paste stencil opening that covers 50–70 % of the pad area for void-free attach. The BQ24721RHBTG4 carries an obsolete lifecycle status. No factory orders are accepted; new- and surplus-stock is the only supply path.","metaTitle":"BQ24721RHBTG4 I²C Multi-Chemistry Battery Charger, 3–4 Cells","metaDescription":"Texas Instruments BQ24721RHBTG4 multi-chemistry battery charger with I²C interface, 3–4 cells, 19.2V max pack voltage.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","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","Product Status":"Obsolete","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":"$3.6200","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/c47328f8e03d9b53aa4a25f20ed4af3e.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Is BQ24721RHBTG4 compatible with 3-cell batteries?","answer":"Yes. The charger supports 3 to 4 series cells, with a maximum battery pack voltage of 19.2 V. A 3-cell Li-ion pack (11.1 V nominal, 12.6 V full charge) is within the operating range."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/BQ24721RHBTG4","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/BQ24721RHBTG4 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}}