{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"BQ24120RHLTG4","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"BQ24120RHLTG4","canonicalUrl":"https://icboms.com/texas-instruments/BQ24120RHLTG4","factsUrl":"https://icboms.com/api/mcp/products/BQ24120RHLTG4","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments bqSWITCHER™ series, Battery Charger, Lithium Ion/Polymer, 20-VFQFN Exposed Pad, Surface Mount, 1 Cells, 4.2V Battery Pack, 2A Max Charge Current, -40°C~85°C.","salesMarkdown":"The BQ24120RHLTG4 is a single-cell Li-Ion or Li-Polymer charger from TI's bqSWITCHER series, delivering a programmable constant-current charge up to 2A and terminating at 4.2V pack voltage. The 16V maximum supply input lets it run from a 5V USB rail or a 12V adapter without an external pre-regulator — handy in portable instruments, handheld scanners, and battery-backed IoT gateways where the input source varies. ## Programmable current and timer — no external FET needed Charge current is set with a single resistor; the timer and current are the only programmable features, keeping the BOM lean. The IC integrates the power FET and sense resistor — no external MOSFET or current-sense amplifier required, which simplifies layout and saves board area in the 20-VQFN (3.5x4.5 mm) package. ## Over-temperature protection and industrial temperature range Built-in over-temperature fault protection shuts down the charger if the die exceeds safe limits — critical when the 2A charge current is run at high ambient temperatures.","metaTitle":"BQ24120RHLTG4 Li-Ion Charger IC, 2A Max, 20-VQFN","metaDescription":"Texas Instruments BQ24120RHLTG4 bqSWITCHER series Li-Ion/Polymer charger, 2A max charge current, 4.2V pack voltage, 16V input max, -40 to 85°C, 20-VQFN.","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":"Bulk","Interface":"-","Mounting Type":"Surface Mount","Package / Case":"20-VFQFN Exposed Pad","Product Status":"Active","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":"$2.6100","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/113f4600c3c0000927d760994a454ad9.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Does BQ24120RHLTG4 require external FETs?","answer":"No. The BQ24120RHLTG4 integrates the power switch and current-sense element internally — no external MOSFET or sense resistor is needed for the charge path."},{"question":"What is the maximum charge current of BQ24120RHLTG4?","answer":"The maximum programmable charge current is 2A, set by an external resistor. The constant-current charge mode is programmable, so you can dial it down for smaller cells."},{"question":"Does BQ24120RHLTG4 have over-temperature protection?","answer":"Yes, the part includes over-temperature fault protection that disables charging if the die temperature exceeds the safe limit."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/BQ24120RHLTG4","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/BQ24120RHLTG4 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}}