{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BQ24745RHDRG4","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"BQ24745RHDRG4","canonicalUrl":"https://icboms.com/texas-instruments/BQ24745RHDRG4","factsUrl":"https://icboms.com/api/mcp/products/BQ24745RHDRG4","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments BQ24745RHDRG4, multi-chemistry battery charger IC, I²C interface, 2-4 cells, 8.064 A max charge current, 24 V supply max, -40 to 125°C junction, 28-VFQFN Exposed Pad package.","salesMarkdown":"## 8.064 A charge current — sizing the power stage The BQ24745RHDRG4 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 8.064 A ceiling sets the inductor and FET selection — the power stage must be rated for continuous current above that level with margin for the charge profile. The I²C interface lets the host controller set the charge current, voltage thresholds, and input current limit without external resistor dividers. Maximum supply voltage is 24 V, which covers standard notebook adapters (19 V to 20 V) and USB PD inputs at 20 V with headroom for transients. Housed in a 28-VFQFN with exposed pad (5x5 mm body), this is a standard QFN package. Rework is straightforward with hot air — the 5 mm body is small enough that the pad reflows evenly, and the corner pin-1 chamfer is visible under magnification. No hidden thermal balls or oddball pad geometry; it behaves like any other 5x5 QFN under the iron. For dual-source planning, the closest functional sibling is the BQ24745RHDT (same die, different tape-and-reel suffix), but pin compatibility should be confirmed against the specific package code.","metaTitle":"BQ24745RHDRG4 battery charger IC, 8.064 A max, I²C, 28-VQFN","metaDescription":"Texas Instruments BQ24745RHDRG4 multi-chemistry battery charger IC, 8.064 A max charge current, I²C interface, 2-4 cells, 24 V supply max, -40 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,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/0767df8d761373e67507790b4ea25ace.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/BQ24745RHDRG4/alternatives.json"},"ai":{"faq":[{"question":"What is the BQ24745RHDRG4 maximum charge current?","answer":"The maximum programmable charge current is 8.064 A. This is a constant-current programmable limit set via the I²C interface. The actual current delivered also depends on the input power source limit and the battery voltage during the charge cycle."},{"question":"Does BQ24745RHDRG4 support LiFePO4 batteries?","answer":"The BQ24745RHDRG4 is specified as a multi-chemistry charger. The I²C-programmable voltage and current thresholds allow configuration for LiFePO4 chemistries, provided the battery pack voltage stays within the 19.2 V maximum. The actual charge algorithm (constant-current/constant-voltage) is set by the host controller through the I²C interface, so LiFePO4 profiles are possible with appropriate firmware."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/BQ24745RHDRG4","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/BQ24745RHDRG4 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}