{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TPS2231PWPR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TPS2231PWPR","canonicalUrl":"https://icboms.com/texas-instruments/TPS2231PWPR","factsUrl":"https://icboms.com/api/mcp/products/TPS2231PWPR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TPS2231PWPR ExpressCard™ switch, 3 outputs high-side, 1.5 V and 3.3 V load, 1.3 A max per channel, 45 mOhm typical Rds(on), 24-HTSSOP exposed pad, -40°C to 85°C.","salesMarkdown":"The TPS2231PWPR is a Texas Instruments ExpressCard™ power switch that routes 1.5 V and 3.3 V to the card slot through three high-side outputs, each rated 1.3 A continuous. The 45 mOhm typical on-resistance sets the conduction loss at about 60 mW per channel at 1.3 A — low enough that the 24-HTSSOP exposed pad handles the thermal load without forced airflow in a typical telecom line card or industrial controller. ## 1.3 A per output — load margin for simultaneous ExpressCard rails Each of the three outputs delivers 1.3 A maximum. In a standard ExpressCard application the 3.3 V rail draws roughly 0.9 A and the 1.5 V rail draws about 0.6 A, leaving 400 mA and 700 mA of headroom respectively. That margin absorbs inrush from hot-plug insertion without tripping the fixed current limit. The switch does not require a Vcc/Vdd bias supply — it powers itself from the load rails, which simplifies the BOM by eliminating a separate gate-drive regulator. ## Fault protection and status flags Built-in fault protection includes fixed current limiting and over-temperature shutdown. The Power Good and Status Flag outputs let a system controller or FPGA monitor the rail health and sequence downstream loads — a common requirement in ExpressCard host controllers and PCIe-based add-in card designs.","metaTitle":"TI TPS2231PWPR ExpressCard Power Switch, 45 mOhm, 1.3 A","metaDescription":"Texas Instruments TPS2231PWPR ExpressCard™ power switch, 1.5 V/3.3 V load, 1.3 A per channel, 45 mOhm Rds(on), industrial temp -40°C to 85°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)","Features":"Power Good, Status Flag","Interface":"-","Input Type":"-","Output Type":"-","Switch Type":"ExpressCard™ Switch","Rds On (Typ)":"45mOhm","Mounting Type":"Surface Mount","Package / Case":"24-TSSOP (0.173\\\", 4.40mm Width) Exposed Pad","Product Status":"Active","Voltage - Load":"1.5V, 3.3V","lifecycle_stage":"eol_hot","Fault Protection":"Current Limiting (Fixed), Over Temperature","Number of Outputs":"3","Base Product Number":"TPS2231","Output Configuration":"High Side","Ratio - Input:Output":"1:1","Operating Temperature":"-40°C~85°C(TA)","Current - Output (Max)":"1.3A","Supplier Device Package":"24-HTSSOP","Voltage - Supply (Vcc/Vdd)":"Not Required"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.8150","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/72301408950e308afbbf2507f3231a23.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TPS2231PWPR/alternatives.json"},"ai":{"faq":[{"question":"What is the maximum current rating of TPS2231PWPR?","answer":"Each of the three outputs is rated for 1.3 A continuous maximum. The total current across all outputs should not exceed the package thermal limit, but at 1.3 A per channel and 45 mOhm Rds(on) the dissipation is about 230 mW total — well within the 24-HTSSOP exposed-pad capability."},{"question":"What is TPS2231PWPR used for?","answer":"It is a dedicated ExpressCard™ power switch that provides the 1.5 V and 3.3 V supply rails to the card slot, with hot-plug control, current limiting, and over-temperature protection. Typical applications include ExpressCard host controllers in industrial PCs, telecom line cards, and PCIe add-in card carrier boards."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TPS2231PWPR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TPS2231PWPR 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}}