{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TPS2231PWPRG4","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TPS2231PWPRG4","canonicalUrl":"https://icboms.com/texas-instruments/TPS2231PWPRG4","factsUrl":"https://icboms.com/api/mcp/products/TPS2231PWPRG4","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TPS2231PWPRG4 ExpressCard™ switch, 3-output high-side, 45 mOhm Rds(on) typ, 1.3 A max per output, 1.5V/3.3V load, 24-HTSSOP exposed pad, -40°C to 85°C.","salesMarkdown":"## ExpressCard slot power switch with three managed outputs The Texas Instruments TPS2231PWPRG4 is a three-output high-side power switch designed for ExpressCard™ slot power management. It switches the 1.5 V and 3.3 V rails to the card with a typical on-resistance of 45 mOhm per channel, delivering up to 1.3 A per output. The switch integrates fixed current limiting and over-temperature protection, plus a power-good output and a status flag for fault reporting to the host controller. ## 45 mOhm Rds(on) and 1.3 A per channel — thermal budget for the slot At 1.3 A per output, the 45 mOhm typical Rds(on) produces conduction loss per channel. ## 24-HTSSOP with exposed pad — footprint and rework The package with a 4.40 mm body width and an exposed thermal pad requires a solder-paste stencil aperture on the centre pad for reliable solder-joint formation. The supplier device package is 24-HTSSOP — the 'H' denotes the exposed pad.","metaTitle":"TI TPS2231PWPRG4 ExpressCard Power Switch, 45 mOhm, Obsolete","metaDescription":"Texas Instruments TPS2231PWPRG4 ExpressCard™ switch, 3-output high-side, 45 mOhm Rds(on), 1.3 A per channel, 24-HTSSOP.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","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":"Obsolete","Voltage - Load":"1.5V, 3.3V","lifecycle_stage":"eol_hot","Fault Protection":"Current Limiting (Fixed), Over Temperature","Number of Outputs":"3","Base Product Number":"TPS223","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":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/72301408950e308afbbf2507f3231a23.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TPS2231PWPRG4/alternatives.json"},"ai":{"faq":[{"question":"What is the Rds(on) of TPS2231PWPRG4?","answer":"The typical on-resistance is 45 mOhm per channel, specified at the load voltage. This is the conduction loss floor at 25°C junction; actual Rds(on) increases with temperature per the normalised curve in the datasheet."},{"question":"Does TPS2231PWPRG4 have over-temperature protection?","answer":"Yes, the switch includes over-temperature shutdown and fixed current limiting as fault protections, along with a power-good output and a status flag for fault reporting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TPS2231PWPRG4","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TPS2231PWPRG4 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}}