{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TPS2231PWRG4","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TPS2231PWRG4","canonicalUrl":"https://icboms.com/texas-instruments/TPS2231PWRG4","factsUrl":"https://icboms.com/api/mcp/products/TPS2231PWRG4","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TPS2231PWRG4, ExpressCard™ power switch, 3-output high-side, 45 mOhm typ Rds(on), 1.3 A max per output, 1.5 V / 3.3 V load, 20-TSSOP, -40°C to 85°C.","salesMarkdown":"## ExpressCard power switch — 45 mOhm Rds(on) and 1.3 A per output The TPS2231PWRG4 is a three-output high-side power switch from Texas Instruments, designed to control the 1.5 V and 3.3 V supply rails in ExpressCard slots. Each output delivers up to 1.3 A continuous, with a typical on-resistance of 45 mOhm — low enough that I²R loss at full load stays under 80 mW per channel in the TSSOP-20 package. ## Fixed protection limits — no trimming Fault protection is fixed: current limiting and over-temperature shutdown are built in, with no adjustable resistor or external sense element. The 1.3 A maximum output is the hard ceiling — if the downstream load draws more, the switch cycles into current limit. The Power Good and Status Flag outputs give the host controller a clean fault handshake. The 20-TSSOP package (4.40 mm wide) is a standard surface-mount footprint, reflow-compatible with a typical MSL-1 moisture sensitivity level.","metaTitle":"TPS2231PWRG4 ExpressCard Power Switch, 45 mOhm, 1.3 A","metaDescription":"Texas Instruments TPS2231PWRG4 ExpressCard switch, 45 mOhm Rds(on), 1.3 A per output, 1.5 V/3.3 V load, industrial temp. Active production, quoted to order.","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-TSSOP (0.173\\\", 4.40mm Width)","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-TSSOP","Voltage - Supply (Vcc/Vdd)":"Not Required"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/72301408950e308afbbf2507f3231a23.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TPS2231PWRG4/alternatives.json"},"ai":{"faq":[{"question":"What is the TPS2231PWRG4 used for?","answer":"It is a three-output high-side power switch for ExpressCard slots, controlling the 1.5 V and 3.3 V supply rails. Typical applications include laptop docking stations, PCIe add-in cards, and any system requiring hot-swap power distribution with fault reporting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TPS2231PWRG4","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TPS2231PWRG4 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}}