{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BQ24123RHLR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"BQ24123RHLR","canonicalUrl":"https://icboms.com/texas-instruments/BQ24123RHLR","factsUrl":"https://icboms.com/api/mcp/products/BQ24123RHLR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments bqSWITCHER™ series, BQ24123RHLR, a 1-3 cell Lithium Ion/Polymer battery charger IC, 2A max charge current, 16V supply max, in a 20-VFQFN Exposed Pad package.","salesMarkdown":"## What the BQ24123RHLR does in a battery-powered design The BQ24123RHLR is a constant-current, constant-voltage charger for 1 to 3 series Lithium Ion or Polymer cells, with a programmable charge current up to 2 A and a battery pack voltage of 8.4 V. It belongs to the bqSWITCHER™ family, which integrates a synchronous PWM controller and power FETs to minimise heat in the 20-VFQFN package. The input supply can go up to 16 V, making it suitable for 5 V USB or 12 V wall adapters without an external pre-regulator. ## Charge current and cell-count flexibility The charger handles 1, 2, or 3 cells in series, with the battery pack voltage set to 8.4 V for a 2-cell stack (the 3-cell termination voltage is higher, but the IC's 8.4 V rating suggests a 2-cell target; the 1-3 cell range covers 4.2 V to 12.6 V packs). Charge current is programmable via an external resistor, and a timer provides backup termination if the current taper doesn't complete within the set window. Over-temperature protection shuts down the charger if the die exceeds the safe junction limit, which is useful in tight enclosures with limited airflow.","metaTitle":"BQ24123RHLR Texas Instruments bqSWITCHER Li-Ion Charger IC","metaDescription":"BQ24123RHLR from Texas Instruments, bqSWITCHER series, 1-3 cell Li-Ion/Polymer charger, 2A max, 16V input, -40°C to 85°C, 20-VFQFN.","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); Cut Tape (CT)","Interface":"-","Mounting Type":"Surface Mount","Package / Case":"20-VFQFN Exposed Pad","Product Status":"Active","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":"$5.5600","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/113f4600c3c0000927d760994a454ad9.pdf","sourceUrl":null},"ai":{"faq":[{"question":"How many cells can the BQ24123RHLR charge?","answer":"It supports 1 to 3 series Lithium Ion or Polymer cells. The battery pack voltage is listed as 8.4 V, which corresponds to a 2-cell configuration; for 3 cells the termination voltage would be 12.6 V, so confirm the pack voltage matches your design."},{"question":"Can the BQ24123RHLR charge a 3S (3-cell series) battery pack?","answer":"Yes, the IC supports 1 to 3 cells in series. For a 3S pack, the termination voltage is typically 12.6 V, which is within the charger's capability as long as the input supply is high enough (the IC can accept up to 16 V input). Confirm the battery pack voltage setting matches your cell chemistry."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/BQ24123RHLR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/BQ24123RHLR 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}}