{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BQ24740RHDR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"BQ24740RHDR","canonicalUrl":"https://icboms.com/texas-instruments/BQ24740RHDR","factsUrl":"https://icboms.com/api/mcp/products/BQ24740RHDR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments BQ24740RHDR multi-chemistry battery charger IC, 2-4 cells, 10A max charge current, 28-VFQFN exposed pad package, -40°C to 125°C junction temperature.","salesMarkdown":"## Multi-chemistry charger for 2-4 cell packs, 10A ceiling The Texas Instruments BQ24740RHDR is a multi-chemistry battery charger IC designed for 2 to 4 series-cell Li-ion, Li-polymer, or NiMH packs, with a programmable constant-current charge up to 10 A and a maximum battery pack voltage of 18 V. It integrates over-voltage fault protection and operates from a supply up to 24 V, making it suited for notebook, industrial handheld, and portable instrument charging bays where the battery chemistry varies across production runs. ## 10 A charge current — sizing the power path The 10 A maximum charge current is the headline rating for this charger IC. At that level the external MOSFETs, inductor, and sense resistor must be sized for continuous 10 A plus margin; the 28-VFQFN exposed pad needs a solid thermal via array under the paddle to keep the junction below 125°C. The constant-current programming loop accepts a resistor-divider from the ISET pin, so the charge current can be dialled down for smaller packs without changing the board layout. ## Obsolete — sourcing and replacement reality The BQ24740RHDR is officially listed as obsolete by Texas Instruments. No direct pin-compatible replacement is documented in the available records, so new designs should evaluate the current-generation bq247xx family for a functional match. ## 28-VFQFN package — rework and thermal notes The 28-VFQFN (5x5 mm) exposed-pad package is surface-mount only. The large centre pad is the primary thermal path and the ground return for the power stage; a poor solder joint under the pad lifts the thermal resistance and can trigger the over-voltage protection during high-current charging. The package outline is symmetric — mark pin 1 orientation on the board silkscreen before the first reflow.","metaTitle":"BQ24740RHDR Multi-Chemistry Battery Charger, 10A Max","metaDescription":"Texas Instruments BQ24740RHDR multi-chemistry battery charger IC, 2-4 cells, 10A max charge current, 28-VFQFN package.","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); Cut Tape (CT)","Interface":"-","Mounting Type":"Surface Mount","Package / Case":"28-VFQFN Exposed Pad","Product Status":"Obsolete","Number of Cells":"2 ~ 4","lifecycle_stage":"eol_hot","Fault Protection":"Over Voltage","Battery Chemistry":"Multi-Chemistry","Current - Charging":"Constant - Programmable","Base Product Number":"BQ24740","Battery Pack Voltage":"18V (Max)","Charge Current - Max":"10A","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":"$3.6600","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/80cd65d95f2a98bba6ca6a187abde8c6.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the maximum charge current of BQ24740RHDR?","answer":"The maximum programmable charge current is 10 A, with a constant-current charging loop controlled by an external resistor on the ISET pin."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/BQ24740RHDR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/BQ24740RHDR 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}}