{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TPS2231MRGPR-3","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TPS2231MRGPR-3","canonicalUrl":"https://icboms.com/texas-instruments/TPS2231MRGPR-3","factsUrl":"https://icboms.com/api/mcp/products/TPS2231MRGPR-3","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TPS2231MRGPR-3 ExpressCard™ power switch, 45 mOhm Rds(on), 1.3 A per output, 3 high-side outputs, dual-rail 1.5 V / 3.3 V load, Power Good & Status Flag, 20-VFQFN exposed pad, -40 to 85 °C.","salesMarkdown":"## ExpressCard slot power — three independent high-side outputs The Texas Instruments TPS2231MRGPR-3 is a dedicated ExpressCard™ power switch that delivers three independent high-side outputs, each rated for 1.3 A maximum, from a 20-VFQFN exposed-pad package. It handles the dual-rail ExpressCard requirement directly: the 3.3 V rail for VCC and the 1.5 V rail for VPP, with a typical on-resistance of 45 mOhm per channel. ## 45 mOhm Rds(on) — thermal budget in a 4x4 QFN At 1.3 A per output, the 45 mOhm typical on-resistance produces roughly 76 mW of conduction loss per channel — about 230 mW total with all three outputs active. The 20-QFN with exposed pad (4x4 mm) dissipates this comfortably with a proper thermal via pattern to the ground plane. The fixed current-limiting and over-temperature fault protection prevent the switch from exceeding its SOA during a short-circuit event; the Status Flag output alerts the host controller so it can sequence a power-down.","metaTitle":"TI TPS2231MRGPR-3 ExpressCard Power Switch, 45 mOhm, 1.3 A","metaDescription":"Texas Instruments TPS2231MRGPR-3 ExpressCard switch, 45 mOhm Rds(on), 1.3 A per output, 3 outputs, Power Good & Status Flag, 20-QFN.","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":"20-VFQFN 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":"20-QFN (4x4)","Voltage - Supply (Vcc/Vdd)":"Not Required"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.7460","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/72301408950e308afbbf2507f3231a23.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TPS2231MRGPR-3/alternatives.json"},"ai":{"faq":[{"question":"Is TPS2231MRGPR-3 obsolete or end-of-life?","answer":"No."},{"question":"What is the closest pin-compatible alternative to TPS2231MRGPR-3?","answer":"The base product number TPS2231 covers multiple package and temperature variants; the MRGPR-3 suffix specifies the 20-QFN (4x4) package and Tape & Reel delivery."},{"question":"What are the key features of the TPS2231MRGPR-3?","answer":"The switch includes Power Good and Status Flag outputs for system-level fault monitoring, fixed current limiting and over-temperature protection, and operates from a 1.5 V / 3.3 V dual-rail load without requiring a separate Vcc/Vdd supply."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TPS2231MRGPR-3","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TPS2231MRGPR-3 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}}