{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BQ24123RHLRG4","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"BQ24123RHLRG4","canonicalUrl":"https://icboms.com/texas-instruments/BQ24123RHLRG4","factsUrl":"https://icboms.com/api/mcp/products/BQ24123RHLRG4","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments bqSWITCHER™ BQ24123RHLRG4, Li-Ion/Polymer battery charger IC, 1-3 cells, 2A max charge current, 8.4V pack voltage, 16V max supply, constant-current programmable, over-temperature protection, -40°C to 85°C, 20-VFQFN Exposed Pad package, Tape & Reel.","salesMarkdown":"## 2A charge current in a 3.5x4.5 mm QFN The Texas Instruments BQ24123RHLRG4 is a bqSWITCHER synchronous-switch-mode Li-Ion/Li-Polymer charge controller. It delivers a programmable constant charge current up to 2A to a battery pack of 1 to 3 series cells, with a target pack voltage of 8.4V for a 2-cell configuration. The input supply ceiling is 16V, so it can run from a 12V rail or a 5V USB adapter without an external pre-regulator. ## Programmable current and timer, over-temperature protection Charge current is set with an external resistor — constant-current programmable — and the IC also includes a programmable safety timer to terminate charging if the battery does not reach full voltage within the window. Over-temperature fault protection shuts down the converter if the die exceeds the thermal threshold, a safeguard for tight enclosures.","metaTitle":"BQ24123RHLRG4 bqSWITCHER Li-Ion Charger IC, 2A, 8.4V","metaDescription":"Texas Instruments BQ24123RHLRG4 is a bqSWITCHER Li-Ion/Polymer charger IC. Charges 1-3 cells at up to 2A, 8.4V pack voltage, 16V max input.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"Mfr":"Texas Instruments","Series":"bqSWITCHER™","Package":"Tape & Reel (TR)","Interface":"-","Mounting Type":"Surface Mount","Package / Case":"20-VFQFN Exposed Pad","Number of Cells":"1 ~ 3","lifecycle_stage":"eol_hot","Fault Protection":"Over Temperature","Battery Chemistry":"Lithium Ion/Polymer","Current - Charging":"Constant - Programmable","Base Product Number":"BQ24123","Battery Pack Voltage":"8.4V","Charge Current - Max":"2A","Operating Temperature":"-40°C~85°C(TA)","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/113f4600c3c0000927d760994a454ad9.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the charging current range of BQ24123?","answer":"The BQ24123RHLRG4 supports constant-current programmable charging with a maximum charge current of 2A. The actual current is set by an external resistor; the datasheet provides the resistor value table for the desired charge rate."},{"question":"Can BQ24123 charge 3 cells?","answer":"Yes — the BQ24123RHLRG4 is specified for 1 to 3 series cells. For a 3-cell Li-Ion pack the target voltage is 12.6V, which is within the 16V maximum supply rating."},{"question":"Is BQ24123RHLRG4 a replacement for BQ24123RHLR?","answer":"The BQ24123RHLRG4 and BQ24123RHLR share the same base product number BQ24123 and the same 20-VQFN package. The RHLRG4 suffix indicates Tape & Reel packaging; the RHLR suffix may denote a different reel quantity or tube. Functionally they are the same die — confirm the packaging format matches your assembly line."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/BQ24123RHLRG4","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/BQ24123RHLRG4 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}}