{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TPS65581PWP","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TPS65581PWP","canonicalUrl":"https://icboms.com/texas-instruments/TPS65581PWP","factsUrl":"https://icboms.com/api/mcp/products/TPS65581PWP","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments D-CAP2™ series, TPS65581PWP, triple-output step-down (buck) regulator, adjustable output, 4.5V to 18V input, 1.5A and 2.5A outputs, 700kHz switching, synchronous rectification, -40°C to 85°C, 20-PowerTSSOP (HTSSOP).","salesMarkdown":"## Three rails, two current ratings — what the load budget looks like The TPS65581PWP is a triple-output synchronous buck regulator from TI's D-CAP2™ family, delivering 1.5 A on one output and 2.5 A on the other two. That 2.5 A rail is the one you budget for the hungriest load — core voltage on a processor, FPGA bank, or a string of peripheral drivers. The 1.5 A output handles the lighter analog or I/O rail. ## 700 kHz switching — inductor sizing trade-off The fixed 700 kHz switching frequency sits in the middle of the typical 300 kHz–2 MHz range for multi-rail POL regulators. At 700 kHz the inductor value lands around 4.7 µH to 10 µH for the 2.5 A rail — small enough to fit a 5 mm × 5 mm shielded inductor, but not so fast that the switching losses eat into the efficiency at light load. The D-CAP2™ control loop gives fast transient response without external compensation, which simplifies the BOM and keeps the output capacitance down to a few ceramic caps per rail. ## Industrial temperature range — where it survives The 18 V input maximum covers 12 V and 24 V industrial buses with margin — just watch the derating if the input sits at 18 V continuously. ## 20-HTSSOP package — the thermal pad is not optional The 0.65 mm pitch is fine for a two-layer board if you route the power traces on the top layer and use the bottom layer as the ground/thermal plane. The package width is 4.40 mm, so it fits in tight layouts alongside the output inductors. The base product number TPS65581 covers the family; the PWP suffix identifies the 20-HTSSOP package and tube shipping medium.","metaTitle":"TPS65581PWP D-CAP2 Buck Regulator, 3 Outputs, 700kHz","metaDescription":"Texas Instruments TPS65581PWP triple step-down regulator, 4.5V-18V input, 1.5A/2.5A outputs, 700kHz switching, 20-HTSSOP.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"Mfr":"Texas Instruments","Series":"D-CAP2™","Package":"Tube","Function":"Step-Down","Topology":"Buck","Output Type":"Adjustable","Mounting Type":"Surface Mount","Package / Case":"20-PowerTSSOP (0.173\\\", 4.40mm Width)","Product Status":"Active","lifecycle_stage":"eol_hot","Current - Output":"1.5A, 2.5A","Number of Outputs":"3","Base Product Number":"TPS65581","Output Configuration":"Positive","Frequency - Switching":"700kHz","Operating Temperature":"-40°C~85°C(TA)","Synchronous Rectifier":"Yes","Voltage - Input (Max)":"18V","Voltage - Input (Min)":"4.5V","Voltage - Output (Max)":"7V","Supplier Device Package":"20-HTSSOP","Voltage - Output (Min/Fixed)":"0.764V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.6007","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/b293c7e858bb0c574ce4909fa0466286.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TPS65581PWP/alternatives.json"},"ai":{"faq":[{"question":"What is the output current of TPS65581PWP?","answer":"The TPS65581PWP provides three outputs: one rated at 1.5 A and two rated at 2.5 A each. All outputs are adjustable from 0.764 V to 7 V."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TPS65581PWP","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TPS65581PWP 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}}