{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BQ24070RHLRG4","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"BQ24070RHLRG4","canonicalUrl":"https://icboms.com/texas-instruments/BQ24070RHLRG4","factsUrl":"https://icboms.com/api/mcp/products/BQ24070RHLRG4","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments BQ24070RHLRG4 battery charger IC, single-cell Li-Ion/Polymer, 1.5 A max charge current, 4.2 V battery pack voltage, 16 V max supply, -40°C to 125°C junction temp, 20-VFQFN exposed pad package, Tape & Reel.","salesMarkdown":"## Single-cell Li-Ion charger, 1.5 A ceiling, 16 V input The Texas Instruments BQ24070RHLRG4 is a linear Li-Ion/Polymer charger for single-cell packs (4.2 V termination). It delivers a programmable constant-current charge up to 1.5 A from an input supply as high as 16 V — useful when the rail is an unregulated 12 V brick or a 5 V USB port that needs headroom for the linear pass element. The charger integrates over-temperature, reverse-current, and short-circuit protection, so the BOM can skip a separate supervisory IC for fault detection. ## 1.5 A max charge current — what it buys you At 1.5 A, a typical 2000 mAh single-cell Li-Ion pack charges in about 80 minutes from the constant-current phase alone, before the constant-voltage taper. That current is programmable via an external resistor; the timer fault-protection feature (programmable via the TIMER pin) prevents indefinite charging if the termination current is never reached. ## Thermal and package reality The 20-VFQFN with exposed pad (3.5x4.5 mm) is the thermal bottleneck. A linear charger dissipates (Vin - Vbat) × Icharge as heat. At 1.5 A from a 5 V input into a 3.7 V cell, that is nearly 2 W — the PCB copper area under the pad must be sized to keep the junction below 125°C.","metaTitle":"BQ24070RHLRG4 Texas Instruments Li-Ion Charger, 1.5 A","metaDescription":"Texas Instruments BQ24070RHLRG4 single-cell Li-Ion/Polymer charger. 1.5 A max charge current, 4.2 V battery voltage, 16 V input. Active production.","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":"-","Mounting Type":"Surface Mount","Package / Case":"20-VFQFN Exposed Pad","Number of Cells":"1","lifecycle_stage":"eol_hot","Fault Protection":"Over Temperature, Reverse Current, Short Circuit","Battery Chemistry":"Lithium Ion/Polymer","Current - Charging":"Constant - Programmable","Base Product Number":"BQ24070","Battery Pack Voltage":"4.2V","Charge Current - Max":"1.5A","Operating Temperature":"-40°C~125°C(TJ)","Programmable Features":"Current, Timer","Voltage - Supply (Max)":"16V","Supplier Device Package":"20-VQFN (3.5x4.5)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$58.8000","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/c3b1c9df67e6436593e1be71a1cae38e.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Can the BQ24070RHLRG4 charge a 4.2 V single-cell battery?","answer":"Yes. The battery pack voltage is rated at 4.2 V, which is the standard termination voltage for a single-cell Li-Ion or Li-Polymer cell."},{"question":"How do I program the charge current on the BQ24070RHLRG4?","answer":"Charge current is programmable by connecting a resistor between the ISET pin and ground. The maximum programmable current is 1.5 A. The charger also features a programmable timer for safety timeout, set via the TIMER pin."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/BQ24070RHLRG4","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/BQ24070RHLRG4 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}}