{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TPS2549RTET","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TPS2549RTET","canonicalUrl":"https://icboms.com/texas-instruments/TPS2549RTET","factsUrl":"https://icboms.com/api/mcp/products/TPS2549RTET","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TPS2549RTET USB high-side power switch, single output, 47 mOhm typical on-resistance, 3 A max, adjustable current limit, over-voltage and over-temperature protection, 16-WQFN 3x3 mm package, -40 to 125 °C operating junction temperature.","salesMarkdown":"## USB power switch with adjustable fault protection It integrates adjustable current limiting, over-voltage protection, over-temperature shutdown, and under-voltage lockout, making it a self-contained power distribution solution for USB ports and general-purpose 5 V rails. At 3 A load, the 47 mOhm typical on-resistance drops about 141 mV across the switch. That voltage margin must be accounted for in the downstream regulator headroom or USB VBUS tolerance budget. The 16-WQFN (3x3 mm) exposed-pad package sinks the I²R heat to the PCB copper — the thermal pad area on the board sets the actual junction temperature rise above the -40 to 125 °C rated range. ## Fault protection set — adjustable current limit, OVP, OTP, UVLO The TPS2549RTET includes adjustable current limiting (set by an external resistor), over-voltage protection that clamps the output if the input exceeds the safe threshold, over-temperature shutdown that latches off the switch at die overtemperature, and under-voltage lockout that holds the switch off until the supply rail is stable. The status flag output signals fault conditions to the host controller. The load-discharge feature pulls the output to ground when the switch is disabled, preventing a floating VBUS after disconnect.","metaTitle":"TPS2549RTET USB Power Switch, 47 mOhm, 3 A, 16-WQFN","metaDescription":"TI TPS2549RTET USB high-side switch, 47 mOhm typ Rds(on), 3 A max output, adjustable current limit, OVP/OTP/UVLO, -40 to 125 °C.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"Mfr":"Texas Instruments","Series":"-","Package":"Tape & Reel (TR); Cut Tape (CT)","Features":"Load Discharge, Status Flag","Interface":"On/Off","Input Type":"Non-Inverting","Output Type":"N-Channel","Switch Type":"USB Switch","Rds On (Typ)":"47mOhm","Mounting Type":"Surface Mount","Package / Case":"16-WFQFN Exposed Pad","Product Status":"Active","Voltage - Load":"4.5V ~ 6.5V","lifecycle_stage":"eol_hot","Fault Protection":"Current Limiting (Adjustable), Over Temperature, Over Voltage, UVLO","Number of Outputs":"1","Base Product Number":"TPS2549","Output Configuration":"High Side","Ratio - Input:Output":"1:1","Operating Temperature":"-40°C~125°C(TJ)","Current - Output (Max)":"3A","Supplier Device Package":"16-WQFN (3x3)","Voltage - Supply (Vcc/Vdd)":"Not Required"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.5400","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/26796dab6537c37806bf77d2b9b4d7e9.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TPS2549RTET/alternatives.json"},"ai":{"faq":[{"question":"Does the TPS2549RTET have over-temperature protection?","answer":"Yes, the TPS2549RTET includes over-temperature shutdown that disables the switch when the die temperature exceeds the safe operating limit, protecting the load and the device."},{"question":"What package does the TPS2549RTET come in?","answer":"The TPS2549RTET is supplied in a 16-WFQFN exposed-pad package (3x3 mm body, supplier device package 16-WQFN)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TPS2549RTET","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TPS2549RTET 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}}