{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TPS2231MRGPT-1","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TPS2231MRGPT-1","canonicalUrl":"https://icboms.com/texas-instruments/TPS2231MRGPT-1","factsUrl":"https://icboms.com/api/mcp/products/TPS2231MRGPT-1","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TPS2231MRGPT-1 ExpressCard power switch, three high-side outputs, 45 mOhm typical Rds(on), 1.3 A max per channel, dual 1.5 V/3.3 V load rails, -40°C to 85°C, 20-QFN (4x4 mm) exposed pad, Tape & Reel.","salesMarkdown":"## ExpressCard slot power — three rails, 45 mOhm floor The TPS2231MRGPT-1 is a three-channel high-side power switch from TI, designed specifically for ExpressCard slot power sequencing. It delivers up to 1.3 A per output on the 1.5 V and 3.3 V rails, with a typical on-resistance of 45 mOhm that sets the conduction loss floor for the slot budget. The switch operates without a separate Vcc supply (Not Required), simplifying the BOM for a dedicated ExpressCard power controller. Built-in fault protection includes fixed current limiting and over-temperature shutdown, plus a Power Good and Status Flag output for system monitoring. ## 1.3 A per channel — three outputs, 1:1 ratio The three outputs are configured as high-side switches with a 1:1 input-to-output ratio. The 1.3 A maximum per channel matches the ExpressCard power specification for the 3.3 V rail and the 1.5 V rail, leaving headroom for inrush and transient loads. The 45 mOhm Rds(on) at 25°C rises with junction temperature — expect about 65-70 mOhm at 85°C ambient. For a 1 A load at 85°C, the voltage drop is roughly 65-70 mV, well within the ExpressCard slot tolerance.","metaTitle":"TPS2231MRGPT-1 ExpressCard Switch, 45 mOhm, 1.3 A, Active","metaDescription":"TI TPS2231MRGPT-1 ExpressCard power switch, 45 mOhm Rds(on), three high-side outputs at 1.3 A each, dual 1.5 V/3.3 V loads, -40°C to 85°C, Active.","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","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":"$1.3600","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/36a7fb219ff9be3f6c8a0666d76c3353.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TPS2231MRGPT-1/alternatives.json"},"ai":{"faq":[{"question":"Is TPS2231MRGPT-1 compatible with 1.5 V and 3.3 V loads?","answer":"Yes, the switch is rated for dual load voltages of 1.5 V and 3.3 V, matching the ExpressCard power rail requirements. Each of the three outputs can independently supply up to 1.3 A on either rail."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TPS2231MRGPT-1","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TPS2231MRGPT-1 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}}