{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TPS2546QRTERQ1","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TPS2546QRTERQ1","canonicalUrl":"https://icboms.com/texas-instruments/TPS2546QRTERQ1","factsUrl":"https://icboms.com/api/mcp/products/TPS2546QRTERQ1","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TPS2546QRTERQ1, Automotive AEC-Q100 USB Power Switch, 1 output, High Side, N-Channel, 73mOhm Rds(on) typ, 2.5A max, 4.5V~5.5V, 16-WFQFN Exposed Pad, -40°C~125°C.","salesMarkdown":"Its typical on-resistance of 73 mOhm sets the conduction loss at 2.5 A output — roughly 0.46 W dissipation before you factor in the package thermal resistance. ## Adjustable current limit and fault protection The switch integrates adjustable current limiting, over-temperature shutdown, and UVLO. The current-limit threshold is set with an external resistor, giving the designer control over the trip point rather than a fixed factory trim. Output is an N-channel MOSFET with a non-inverting On/Off interface and a load-discharge feature that pulls the output low when disabled — useful for preventing floating VBUS in USB applications. That means TI is not actively promoting it for new projects, though it remains available through existing distribution channels for ongoing production.","metaTitle":"TPS2546QRTERQ1 USB Power Switch, 73mOhm, AEC-Q100, NRND","metaDescription":"Texas Instruments TPS2546QRTERQ1 automotive USB switch, 2.5A, 73mOhm Rds(on), adjustable current limit. NRND status.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"NRND","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"Mfr":"Texas Instruments","Series":"Automotive, AEC-Q100","Package":"Tape & Reel (TR); Cut Tape (CT)","Features":"Load Discharge","Interface":"On/Off","Input Type":"Non-Inverting","Output Type":"N-Channel","Switch Type":"USB Switch","Rds On (Typ)":"73mOhm","Mounting Type":"Surface Mount","Package / Case":"16-WFQFN Exposed Pad","Product Status":"Not For New Designs","Voltage - Load":"4.5V ~ 5.5V","lifecycle_stage":"eol_hot","Fault Protection":"Current Limiting (Adjustable), Over Temperature, UVLO","Number of Outputs":"1","Base Product Number":"TPS2546","Output Configuration":"High Side","Ratio - Input:Output":"1:1","Operating Temperature":"-40°C~125°C(TJ)","Current - Output (Max)":"2.5A","Supplier Device Package":"16-WQFN (3x3)","Voltage - Supply (Vcc/Vdd)":"-"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.8400","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/7a2dc46ad8f6be3af4c4fb40b16dc56c.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TPS2546QRTERQ1/alternatives.json"},"ai":{"faq":[{"question":"Is TPS2546QRTERQ1 obsolete or NRND?","answer":"It is not yet discontinued, but TI recommends evaluating current-production alternatives for new designs."},{"question":"What is the Rds(on) of TPS2546QRTERQ1?","answer":"The typical on-resistance is 73 mOhm. This is the resistance between drain and source when the switch is enabled at the rated input voltage."},{"question":"Does TPS2546QRTERQ1 have adjustable current limiting?","answer":"Yes, the current limit is adjustable via an external resistor, giving flexibility to set the trip point for different load requirements."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TPS2546QRTERQ1","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TPS2546QRTERQ1 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T18:03:28.771Z","lastPublished":"2026-07-22T18:03:28.771Z","indexable":true}}