{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BQ24038RHLRG4","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"BQ24038RHLRG4","canonicalUrl":"https://icboms.com/texas-instruments/BQ24038RHLRG4","factsUrl":"https://icboms.com/api/mcp/products/BQ24038RHLRG4","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments BQ24038RHLRG4, bqTINY™ III series, single-cell Lithium Ion/Polymer linear charger IC with USB interface, 1.5 A maximum charge current, 16 V supply max, in a 20-VFQFN Exposed Pad package.","salesMarkdown":"## Charger IC for single-cell Li-ion with USB input The BQ24038RHLRG4 is a linear charger IC from the bqTINY™ III family, designed for single-cell Lithium Ion or Lithium Polymer battery packs. It accepts a USB bus as the primary power source, with a maximum supply voltage of 16 V — enough headroom for unregulated adapters or USB-C PD inputs without an extra pre-regulator. Charge current is constant and programmable up to 1.5 A maximum, set by an external resistor. The 1.5 A ceiling suits medium-capacity cells in portable instruments, handheld terminals, and medical devices where charge time matters but the board area is tight. ## Temperature range and protection set Operating junction temperature spans -40°C to 125°C, covering industrial enclosures and under-hood automotive auxiliary bays. The charger integrates over-temperature, reverse-current, and short-circuit fault protection — the reverse-current block prevents battery discharge back into the input when the supply is removed. Programmable features include charge current and a safety timer, letting the firmware or BOM resistor set the termination condition. The battery pack voltage is regulated to 4.36 V, a typical full-charge target for Li-ion cells with a 4.2 V nominal plateau. ## Package and footprint for thermal management The 20-VFQFN Exposed Pad package (3.5x4.5 mm body) requires a thermal land on the PCB to sink heat from the 1.5 A charge pass element. The supplier device package is 20-VQFN (3.5x4.5), and the part is supplied on Tape & Reel for automated assembly. ## Active production and sourcing posture Sourced through our distribution channel. No stock-holding claim — quoted to order per RFQ.","metaTitle":"BQ24038RHLRG4 – TI Li-Ion Charger IC, USB, 1.5 A, 20-VFQFN","metaDescription":"Texas Instruments BQ24038RHLRG4 single-cell Li-Ion/Li-Pol charger IC with USB interface, 1.5 A max charge current, 16 V input, -40°C to 125°C range.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"Mfr":"Texas Instruments","Series":"bqTINY™ III","Package":"Tape & Reel (TR)","Interface":"USB","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":"BQ24038","Battery Pack Voltage":"4.36V","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":"$4.3500","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/ac9036052305c74527f033a709990eb1.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the maximum charge current for the BQ24038RHLRG4?","answer":"The maximum charge current is 1.5 A, constant and programmable via an external resistor. The actual charge rate in the application is set below this ceiling by the resistor value."},{"question":"Is the BQ24038RHLRG4 compatible with USB charging?","answer":"Yes, the interface is USB, and the 16 V maximum supply voltage allows direct connection to a USB bus or an unregulated adapter without additional regulation."},{"question":"What package does the BQ24038RHLRG4 come in?","answer":"It is supplied in a 20-VFQFN Exposed Pad package (3.5x4.5 mm body), on Tape & Reel. The supplier device package is 20-VQFN (3.5x4.5)."},{"question":"BQ24038RHLRG4 vs BQ24030 — what are the key differences?","answer":"Both are single-cell Li-ion linear chargers from the bqTINY™ III family. The BQ24038 regulates the battery pack voltage to 4.36 V, while the BQ24030 targets a 4.2 V full-charge voltage. The BQ24038 also includes a programmable timer feature. Pin compatibility should be verified against the respective datasheets."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/BQ24038RHLRG4","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/BQ24038RHLRG4 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}}