{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TPS2540RTET","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TPS2540RTET","canonicalUrl":"https://icboms.com/texas-instruments/TPS2540RTET","factsUrl":"https://icboms.com/api/mcp/products/TPS2540RTET","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TPS2540RTET, USB Power Switch, single high-side N-channel, 73 mOhm Rds(on) typ, 2.5 A max, 4.5–5.5 V load, 16-WQFN (3x3 mm), -40°C to 125°C junction","salesMarkdown":"## USB host-port power switch — 73 mOhm, 2.5 A, in a 3x3 mm QFN Its 73 mOhm typical on-resistance at 5 V sets the voltage drop to the connector: at 2.5 A that's about 180 mV of IR drop before the cable, so the host-side regulation must account for it. The part integrates adjustable current limiting, over-temperature protection, and UVLO — the protection suite that keeps the 5 V bus from collapsing under a short or a hot plug. ## 2.5 A output and junction-temperature derating The catch: the 73 mOhm Rds(on) at 25°C roughly doubles at 125°C junction, so the actual IR drop and self-heating at 2.5 A will be higher than a room-temperature calculation suggests. ## Protection features and interface The switch is controlled by a single On/Off logic input with a non-inverting input type, and it outputs a status flag that can signal a fault to the host controller. The fault protection set includes adjustable current limiting (set with an external resistor), over-temperature shutdown, and UVLO — the UVLO threshold ensures the switch turns off cleanly if the 5 V rail droops below the regulation window. The output configuration is high-side N-channel, so the load is switched on the positive rail and the ground path is continuous.","metaTitle":"TPS2540RTET USB Power Switch - 73 mOhm, 2.5 A","metaDescription":"Texas Instruments TPS2540RTET USB switch: 73 mOhm Rds(on), 2.5 A max, single high-side N-channel, -40°C to 125°C, 16-WQFN. Active production, ROHS3.","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":"Status Flag","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":"TPS2540","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)":"Not Required"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.3800","priceTiers":[{"qty":1,"price":"$2.38000","currency":"USD"},{"qty":10,"price":"$2.13800","currency":"USD"},{"qty":25,"price":"$2.01680","currency":"USD"},{"qty":100,"price":"$1.71820","currency":"USD"},{"qty":250,"price":"$1.53064","currency":"USD"},{"qty":500,"price":"$1.33932","currency":"USD"},{"qty":1250,"price":"$1.10971","currency":"USD"},{"qty":2500,"price":"$1.08300","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/ff786a94560ae46c7f708c1b8e9c1319.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TPS2540RTET/alternatives.json"},"ai":{"faq":[{"question":"What is the difference between TPS2540 and TPS2541?","answer":"The TPS2540RTET and the TPS2541RTET share the same 73 mOhm Rds(on), 2.5 A output, single-channel high-side switch, and 16-WQFN package. The TPS2541 adds a Load Discharge feature — it actively discharges the output capacitance when the switch is turned off. If your design requires the output to collapse quickly after disable (e.g., to prevent a lingering voltage on a disconnected USB cable), the TPS2541 is the better fit. For a basic on/off switch without discharge, the TPS2540 is sufficient."},{"question":"Does TPS2540RTET meet USB-IF compliance for host power?","answer":"The TPS2540RTET is a USB power switch designed for host and dedicated charging ports, but USB-IF compliance involves the entire port implementation (controller, cable, connector, and power switch). The part's adjustable current limiting, over-temperature protection, and UVLO satisfy the protection requirements of USB 2.0 and BC1.2, but the host-side voltage regulation and cable IR drop must still meet the 4.75 V minimum at the connector under full load. Confirm with the USB-IF compliance checklist for your specific design."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TPS2540RTET","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TPS2540RTET 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}}