{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TPS2546RTET","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TPS2546RTET","canonicalUrl":"https://icboms.com/texas-instruments/TPS2546RTET","factsUrl":"https://icboms.com/api/mcp/products/TPS2546RTET","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TPS2546RTET, USB high-side power switch, 73 mOhm typical Rds(on), 3 A maximum output, single N-channel output, 16-WFQFN exposed-pad package, -40°C to 125°C junction range.","salesMarkdown":"## USB port power switch with integrated fault protection The TPS2546RTET is a single-channel high-side USB switch from Texas Instruments, rated for 3 A continuous output with a typical on-resistance of 73 mOhm. The 1:1 input-to-output ratio means the switch passes the full input rail to the USB connector when enabled, with the voltage drop determined by the load current times Rds(on). Fault protection is built in: adjustable current limiting, over-temperature shutdown, and undervoltage lockout (UVLO). The current limit threshold is set with an external resistor, letting you tailor the trip point to the USB port's rating without a separate controller. No external Vcc supply is needed — the switch is self-powered from the load rail. ## 73 mOhm Rds(on) and 3 A current rating — thermal design note At 3 A, the 73 mOhm typical Rds(on) produces about 657 mW of conduction loss (I²R). A 2-layer board with minimal copper may push junction temperature above 125°C at full load in a 70°C ambient — plan the thermal relief accordingly. For automotive USB ports, look at the TPS2546-Q1 variant if available.","metaTitle":"TPS2546RTET USB Power Switch – 73 mOhm, 3 A, Active","metaDescription":"Texas Instruments TPS2546RTET – USB high-side switch, 73 mOhm Rds(on), 3 A max, active production, 16-WQFN package.","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~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":"$1.6500","priceTiers":[{"qty":1,"price":"$1.65000","currency":"USD"},{"qty":10,"price":"$1.48600","currency":"USD"},{"qty":25,"price":"$1.40200","currency":"USD"},{"qty":100,"price":"$1.19440","currency":"USD"},{"qty":250,"price":"$0.83412","currency":"USD"},{"qty":500,"price":"$0.73712","currency":"USD"},{"qty":1250,"price":"$0.58194","currency":"USD"},{"qty":2500,"price":"$0.54900","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/70ef28621988b7b1ea40f7aeafb1d560.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TPS2546RTET/alternatives.json"},"ai":{"faq":[{"question":"What is the difference between TPS2546RTET and TPS2546RTER?","answer":"Both share the same die and 16-WQFN package. The RTET suffix indicates Tape & Reel (TR) packaging; the RTER suffix typically indicates a different reel quantity or tape format. Electrically they are identical. Confirm the reel quantity with your distributor before ordering."},{"question":"Does TPS2546RTET have overcurrent protection?","answer":"Yes, it includes adjustable current limiting, over-temperature shutdown, and undervoltage lockout (UVLO). The current limit is set with an external resistor, allowing you to program the trip point."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TPS2546RTET","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TPS2546RTET 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}}