{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TPS259621DDAR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TPS259621DDAR","canonicalUrl":"https://icboms.com/texas-instruments/TPS259621DDAR","factsUrl":"https://icboms.com/api/mcp/products/TPS259621DDAR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TPS259621DDAR electronic fuse, 2.7V to 19V input, 2A output, ±10.4% accuracy, -40°C to 125°C, 8-PowerSOIC (0.154\", 3.90mm Width) with PowerPad, Surface Mount.","salesMarkdown":"## 2.7V–19V input, 2A output — electronic fuse for the unregulated bus The TPS259621DDAR is a Texas Instruments electronic fuse that sits between a DC supply rail and the load, replacing a PTC or a discrete fuse-and-MOSFET pair. It accepts an input from 2.7V up to 19V and delivers a continuous 2A output, with the current limit accuracy specified at ±10.4%. That 125°C ceiling means the part can sit next to a motor driver or a hot power supply without derating the output current — the thermal pad on the 8-PowerSOIC package is the main path for pulling heat out of the die. ## PowerPad layout — the copper pour under the part sets the thermal budget The RθJA you achieve depends on that pad area; a 1-square-inch pour on a 2-layer board typically drops the junction temperature by 20–30°C compared to a minimal pad. ## ±10.4% current-limit accuracy — budget the tolerance in the load current The ±10.4% accuracy on the current limit means the actual trip point for a nominal 2A setting could be as low as 1.79A or as high as 2.21A. A design drawing 1.8A steady-state is cutting it close — the load should stay at or below 1.6A to guarantee the fuse does not nuisance-trip across the tolerance band and temperature range.","metaTitle":"TPS259621DDAR Electronic Fuse, 2.7V-19V, 2A, PowerSOIC-8","metaDescription":"TI TPS259621DDAR electronic fuse, 2A output, 2.7V to 19V input range, ±10.4% accuracy, -40°C to 125°C, 8-PowerSOIC.","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); Cut Tape (CT)","Accuracy":"±10.4%","Function":"Electronic Fuse","Mounting Type":"Surface Mount","Package / Case":"8-PowerSOIC (0.154\\\", 3.90mm Width)","Product Status":"Active","Sensing Method":"-","Voltage - Input":"2.7V ~ 19V","lifecycle_stage":"eol_hot","Current - Output":"2A","Base Product Number":"TPS259621","Operating Temperature":"-40°C~125°C","Supplier Device Package":"8-SO PowerPad"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.9200","priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/f92b87a8b67a51a4a9fa6f19fb886123.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/TPS259621DDAR/alternatives.json"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TPS259621DDAR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TPS259621DDAR 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}}