{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BQ24745RHDTG4","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"BQ24745RHDTG4","canonicalUrl":"https://icboms.com/texas-instruments/BQ24745RHDTG4","factsUrl":"https://icboms.com/api/mcp/products/BQ24745RHDTG4","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments BQ24745RHDTG4, Multi-Chemistry Battery Charger IC, 2-4 Cells, 8.064A Max Charge Current, I²C Interface, 28-VQFN (5x5) Exposed Pad, -40°C to 125°C.","salesMarkdown":"## 8.064 A max charge current — sizing the power path The BQ24745RHDTG4 is a multi-chemistry battery charger IC from Texas Instruments that handles 2 to 4 series cells with a programmable constant-current charge up to 8.064 A. That current ceiling is the main event for the power-stage design: the inductor, sense resistor, and input capacitor all need to be sized for that peak, not the average pack current. The I²C interface lets the host set the charge current, voltage thresholds, and input current limit, so the same BOM can serve different pack capacities by firmware alone. ## 28-VQFN exposed pad — thermal and rework note The 28-VQFN (5x5 mm) package with exposed pad is the standard QFN footprint for a charger this size. The thermal pad under the part is the primary heat path — the board needs a matching copper land and at least four vias to the inner ground plane to keep the junction below 125°C at 8 A charge.","metaTitle":"BQ24745RHDTG4 Battery Charger IC, 8.064A Max, I²C, 28-VQFN","metaDescription":"Texas Instruments BQ24745RHDTG4 multi-chemistry battery charger IC. Supports 2-4 cells, 8.064A max charge current, I²C interface, -40°C to 125°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":"28-VFQFN Exposed Pad","Number of Cells":"2 ~ 4","lifecycle_stage":"eol_hot","Fault Protection":"Over Voltage","Battery Chemistry":"Multi-Chemistry","Current - Charging":"Constant - Programmable","Base Product Number":"BQ24745","Battery Pack Voltage":"19.2V (Max)","Charge Current - Max":"8.064A","Operating Temperature":"-40°C~125°C(TJ)","Programmable Features":"-","Voltage - Supply (Max)":"24V","Supplier Device Package":"28-VQFN (5x5)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/0767df8d761373e67507790b4ea25ace.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the maximum charge current for BQ24745RHDTG4?","answer":"The maximum charge current is 8.064 A, programmable via the I²C interface. The actual current in a design is set by the sense resistor and the host command."},{"question":"Is BQ24745RHDTG4 compatible with 4-cell lithium-ion batteries?","answer":"Yes, the part supports 2 to 4 series cells, which covers 4S Li-ion and LiPo packs. The maximum battery pack voltage is 19.2 V."},{"question":"Can I use BQ24745RHDTG4 as a replacement for BQ24745RHDT?","answer":"The BQ24745RHDTG4 and BQ24745RHDT share the same base product number BQ24745 and the same 28-VQFN package. The 'G4' suffix typically indicates a lead-free / RoHS-compliant finish. They are functionally identical and pin-compatible, so the 'G4' variant is a direct drop-in replacement for the non-G4 version in most designs."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/BQ24745RHDTG4","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/BQ24745RHDTG4 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}}