{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BQ25303JRTER","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"BQ25303JRTER","canonicalUrl":"https://icboms.com/texas-instruments/BQ25303JRTER","factsUrl":"https://icboms.com/api/mcp/products/BQ25303JRTER","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments BQ25303JRTER, single-cell Li-Ion/Polymer battery charger, 3 A max charge current, USB interface, programmable charge voltage and current, 16-WFQFN exposed pad package, -40°C to 85°C operating temperature.","salesMarkdown":"## 3 A single-cell Li-ion charger with USB interface The Texas Instruments BQ25303JRTER is a single-cell Li-Ion/Polymer battery charger that delivers up to 3 A of programmable charge current from a USB or DC supply. It integrates constant-current/constant-voltage (CC/CV) regulation with programmable charge voltage options of 4.1V, 4.2V, 4.35V, and 4.4V, covering the most common Li-ion and Li-Po termination voltages without external resistor dividers. The device operates from a supply up to 17 V, making it suitable for 5V USB, 9V/12V adapters, or unregulated wall warts. The USB interface simplifies connection to standard USB power sources, and the integrated fault protection — over-current, over-temperature, over-voltage, and short-circuit — reduces external component count and improves BOM reliability. ## Charge current and voltage — what sets the BOM The 3 A maximum charge current is the headline parametric for charge time and thermal design. For lower-power designs, the charge current is programmable via an external resistor, so the same PCB layout can serve multiple product tiers. The four selectable battery regulation voltages (4.1V, 4.2V, 4.35V, 4.4V) let a single BOM line cover standard Li-ion cells, high-voltage Li-Po (4.35V), and long-life chemistries (4.1V). The voltage is set by pin-strapping, not I2C, so no firmware dependency — a clean hardware-only charge solution. ## Protection and programmable features The BQ25303JRTER integrates over-current, over-temperature, over-voltage, and short-circuit protection. For a procurement team, this means fewer external protection components (no separate OVP IC, no PTC fuse in many cases) and a simpler qualification matrix. The programmable features — charge current and regulation voltage — are set by external resistors, not digital registers, which avoids firmware validation overhead. ## Active production — no lifecycle risk For a BOM line, this means no last-time-buy planning required and full manufacturer support for new designs.","metaTitle":"TI BQ25303JRTER single-cell Li-ion charger, 3 A","metaDescription":"Texas Instruments BQ25303JRTER single-cell Li-ion/Polymer charger with 3 A max current, USB interface, programmable voltage (4.1V/4.2V/4.35V/4.4V), integrated","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); Cut Tape (CT)","Interface":"USB","Mounting Type":"Surface Mount","Package / Case":"16-WFQFN Exposed Pad","Product Status":"Active","Number of Cells":"1","lifecycle_stage":"eol_hot","Fault Protection":"Over Current, Over Temperature, Over Voltage, Short Circuit","Battery Chemistry":"Lithium Ion/Polymer","Current - Charging":"Constant - Programmable","Battery Pack Voltage":"4.1V, 4.2V, 4.35V, 4.4V","Charge Current - Max":"3A","Operating Temperature":"-40°C~85°C(TA)","Programmable Features":"Current, Voltage","Voltage - Supply (Max)":"17V","Supplier Device Package":"16-WQFN (3x3)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.1900","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/50a9aac4e09808b048aeb37ced92ad24.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Can BQ25303JRTER charge a 4.2V battery?","answer":"Yes. The BQ25303JRTER supports a 4.2V battery regulation voltage, which is one of the four pin-selectable options (4.1V, 4.2V, 4.35V, 4.4V). It is fully compatible with standard 4.2V Li-ion cells."},{"question":"Is BQ25303JRTER RoHS compliant?","answer":"Texas Instruments typically marks RoHS compliance on the product label and in the datasheet. Confirm the specific date/lot code compliance statement with the supplier at order time."},{"question":"What is the difference between BQ25303JRTER and BQ25302?","answer":"The BQ25303JRTER is a single-cell charger with a 3 A maximum charge current. The BQ25302 is a different variant in the same family; the primary difference is the charge current rating and feature set. For exact parametric differences, compare the datasheet tables side by side. No direct pin-compatible replacement is claimed without a verified cross-reference."},{"question":"Can BQ25303JRTER charge two cells?","answer":"No. The BQ25303JRTER is a single-cell charger (Number of Cells = 1). It is designed for one Li-ion or Li-Po cell in series. For multi-cell charging, look at the BQ257xx or BQ246xx series from TI."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/BQ25303JRTER","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/BQ25303JRTER 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}}