{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BQ24721CRHBT","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"BQ24721CRHBT","canonicalUrl":"https://icboms.com/texas-instruments/BQ24721CRHBT","factsUrl":"https://icboms.com/api/mcp/products/BQ24721CRHBT","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments BQ24721CRHBT, Multi-Chemistry Battery Charger IC, I²C Interface, 3 ~ 4 Cells, 19.2V Max Battery Pack Voltage, 32-VFQFN Exposed Pad, Tape & Reel.","salesMarkdown":"## Multi-chemistry charger with digital current control The Texas Instruments BQ24721CRHBT is a multi-chemistry battery charger IC designed for 3- to 4-cell series packs, with a maximum battery pack voltage of 19.2V. It integrates an I²C interface for host-controlled charge current programming, eliminating external resistor dividers and enabling adaptive charging profiles for Li-ion, Li-polymer, or other chemistries. ## Supply rail and pack voltage limits Maximum supply voltage is 24V, which accommodates common AC adapter outputs (19V–20V) with margin for transient events. The 19.2V max battery pack voltage matches a 4-series Li-ion cell stack at full charge (4.2V/cell × 4 = 16.8V) plus a small overhead for the charger's regulation setpoint. With 3-4 cell support, this part fits the majority of notebook and portable instrument battery configurations. The I²C interface allows the system host to read back charge status and adjust current in real time, useful for thermal throttling or input-current limiting when the adapter is shared. ## Package and procurement posture Supplied in Tape & Reel (TR) for automated assembly, in a 32-VFQFN Exposed Pad package (32-VQFN 5x5 mm). Lifecycle status is Active — no end-of-life notice or last-time-buy risk.","metaTitle":"BQ24721CRHBT battery charger IC, I²C, 3-4 cell, 32-VQFN","metaDescription":"Active-production multi-chemistry battery charger from TI. I²C-programmable charge current, 19.2V max pack voltage, 3-4 cell support. 32-VQFN package.","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","Product Status":"Active","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":"$11.4682","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/c47328f8e03d9b53aa4a25f20ed4af3e.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What battery chemistries does BQ24721CRHBT support?","answer":"The device is specified for multi-chemistry operation, covering Li-ion, Li-polymer, and other common rechargeable chemistries. The I²C interface lets the host tailor the charge algorithm to the specific cell type."},{"question":"Is BQ24721CRHBT compatible with Li-ion batteries?","answer":"Yes, the multi-chemistry support includes Li-ion and Li-polymer. The 19.2V max pack voltage covers a 4-series Li-ion stack at full charge (16.8V) with margin."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/BQ24721CRHBT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/BQ24721CRHBT 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}}