{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BQ24120RHLRG4","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"BQ24120RHLRG4","canonicalUrl":"https://icboms.com/texas-instruments/BQ24120RHLRG4","factsUrl":"https://icboms.com/api/mcp/products/BQ24120RHLRG4","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments bqSWITCHER™ series, BQ24120RHLRG4, single-cell Lithium Ion/Polymer battery charger, 2A max charge current, 16V max supply, 20-VFQFN Exposed Pad package, -40°C to 85°C operating range.","salesMarkdown":"## Charger for single-cell Li-ion packs The BQ24120RHLRG4 is a single-cell Lithium Ion/Polymer charger from TI's bqSWITCHER™ series. It delivers constant - programmable charge current up to 2A from a supply rail as high as 16V. ## Programmable current and timer Charge current is set by an external resistor — no digital interface required. The timer provides a safety timeout; if the battery doesn't reach the 4.2V regulation voltage within the window, the charge cycle terminates. Over-temperature protection shuts down the die if the junction exceeds the thermal limit, which is the primary safeguard given the lack of a dedicated NTC input. ## Active production, tape-and-reel delivery It ships in Tape & Reel (TR) format, surface-mount. The base product number is BQ24120; the RHL suffix identifies the 20-VQFN package variant, and the G4 denotes RoHS-compliant green molding compound. ## Thermal and layout notes for the 20-VQFN The 3.5x4.5 mm body is small enough for handheld designs but demands careful solder-paste stencil design to avoid bridging on the fine-pitch perimeter pads.","metaTitle":"BQ24120RHLRG4 – TI bqSWITCHER Li-Ion Charger, 2A, 20-VQFN","metaDescription":"Texas Instruments BQ24120RHLRG4 single-cell Li-Ion/Polymer charger, 2A max charge current, 16V max supply, -40°C to 85°C. Active production, 20-VQFN package.","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","lifecycle_stage":"eol_hot","Fault Protection":"Over Temperature","Battery Chemistry":"Lithium Ion/Polymer","Current - Charging":"Constant - Programmable","Base Product Number":"BQ24120","Battery Pack Voltage":"4.2V","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":"Is the BQ24120RHLRG4 compatible with 4.2V Li-Po batteries?","answer":"Yes — the battery pack voltage is regulated to 4.2V, which is the standard full-charge voltage for a single-cell Li-Po or Li-ion cell. The charger terminates when the cell reaches that threshold."},{"question":"Does the BQ24120RHLRG4 support programmable charge current?","answer":"Yes — charge current is constant and programmable via an external resistor. There is no I2C or SMBus interface; the current set-point is analog. The maximum is 2A."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/BQ24120RHLRG4","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/BQ24120RHLRG4 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}}