{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TPS2546RTER","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TPS2546RTER","canonicalUrl":"https://icboms.com/texas-instruments/TPS2546RTER","factsUrl":"https://icboms.com/api/mcp/products/TPS2546RTER","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TPS2546RTER, USB power switch, 1:1 high-side N-channel, 3A max output, 73mOhm typical Rds(on), adjustable current limit, over-temperature and UVLO protection, -40°C to 85°C, 16-WQFN (3x3) exposed pad.","salesMarkdown":"## What this USB power switch does for your design The TPS2546RTER is a single-channel high-side N-channel USB power switch from Texas Instruments, rated for continuous output up to 3A with a typical on-resistance of 73mOhm. That Rds(on) means at 3A you're dissipating roughly 0.66W in the switch — the exposed pad on the 16-WQFN (3x3 mm) package is your primary thermal path, so the board copper under it needs to be there. It operates from a 4.5V to 5.5V load supply — essentially a 5V rail — and requires no separate Vcc supply. The On/Off interface with non-inverting input lets a GPIO or open-drain signal enable the output. ## Protection scheme that handles real USB faults Built-in fault protection includes an adjustable current limit — you set the threshold with an external resistor, giving flexibility from a few hundred mA up to the 3A ceiling. Over-temperature shutdown and undervoltage lockout are also on-chip, so a shorted cable or a hot-plug surge won't take out the rail or the part. The 1:1 input-to-output ratio means the switch is a straight pass element — no charge pump needed, which keeps the quiescent current low and the response fast. ## Active production — sourcing for your BOM No end-of-life notification or successor has been issued. ## Package and thermal considerations for layout Without that copper pour, the junction temperature rises quickly at 3A continuous. The surface-mount package is standard for reflow assembly.","metaTitle":"TPS2546RTER USB Power Switch 3A 73mOhm Active Texas","metaDescription":"Texas Instruments TPS2546RTER USB power switch, 1:1 high-side N-channel, 3A max, 73mOhm typ, adjustable current limit, OTP, UVLO, -40°C to 85°C, 16-WQFN.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"Mfr":"Texas Instruments","Series":"-","Package":"Tape & Reel (TR); Cut Tape (CT)","Features":"-","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":"Active","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~85°C(TA)","Current - Output (Max)":"3A","Supplier Device Package":"16-WQFN (3x3)","Voltage - Supply (Vcc/Vdd)":"Not Required"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.5400","priceTiers":[{"qty":1,"price":"$1.54000","currency":"USD"},{"qty":10,"price":"$1.37900","currency":"USD"},{"qty":25,"price":"$1.30880","currency":"USD"},{"qty":100,"price":"$1.07520","currency":"USD"},{"qty":250,"price":"$1.00504","currency":"USD"},{"qty":500,"price":"$0.88818","currency":"USD"},{"qty":1000,"price":"$0.70119","currency":"USD"},{"qty":3000,"price":"$0.66150","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/70ef28621988b7b1ea40f7aeafb1d560.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TPS2546RTER/alternatives.json"},"ai":{"faq":[{"question":"What is the output current limit of TPS2546RTER?","answer":"The maximum continuous output current is 3A. The current limit is adjustable via an external resistor, so you can set a lower threshold if needed."},{"question":"Does TPS2546RTER have over-temperature protection?","answer":"Yes — over-temperature shutdown is one of the integrated fault protections, along with adjustable current limiting and undervoltage lockout."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TPS2546RTER","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TPS2546RTER when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}