{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"UCC3809P-2","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"UCC3809P-2","canonicalUrl":"https://icboms.com/texas-instruments/UCC3809P-2","factsUrl":"https://icboms.com/api/mcp/products/UCC3809P-2","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments UCC3809P-2 offline switching controller, multi-topology (Boost, Buck, Flyback, Forward), 1MHz switching, 8-VSSOP package, Tube.","salesMarkdown":"## Multi-topology PWM controller for isolated supplies The UCC3809P-2 is a current-mode PWM controller from Texas Instruments designed for offline and DC-DC converter applications. It supports boost, buck, flyback, and forward topologies, making it a flexible choice for a range of isolated power supply designs. Operating from an 8 V to 19 V supply (Vcc/Vdd), the controller drives an external power switch — it has no internal switch, so the designer selects the MOSFET or IGBT that matches the output power target. Switching frequency reaches 1 MHz, which allows the use of smaller magnetics and capacitors compared to lower-frequency controllers. The 70% maximum duty cycle suits forward and flyback converters operating in continuous conduction mode. ## Temperature grade and package fit This makes it suitable for avionics, downhole instrumentation, and other high-reliability environments where the ambient temperature exceeds the commercial or industrial envelope. The controller is offered in an 8-VSSOP package (also listed as 8-TSSOP / 8-MSOP, 0.118-inch width). The small footprint suits space-constrained board layouts, but the fine-pitch leads require careful solder-paste stencil design for consistent wetting. Control features include frequency control and soft start, giving the designer a way to set the switching frequency with an external resistor and to limit inrush current during startup. No stock-holding claim is made; each RFQ is quoted to order.","metaTitle":"UCC3809P-2 Texas Instruments Offline PWM Controller, 1MHz","metaDescription":"UCC3809P-2 offline PWM controller from Texas Instruments, active production, RoHS3 compliant. Supports boost, buck, flyback, forward topologies.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["DC-DC Power Modules"],"specifications":{"Package":"Tube","Topology":"Boost, Buck, Flyback, Forward","Duty Cycle":"70%","Mounting Type":"Surface Mount","Package / Case":"8-TSSOP, 8-MSOP (0.118\\\", 3.00mm Width)","lifecycle_stage":"eol_hot","Control Features":"Frequency Control, Soft Start","Output Isolation":"Isolated","Internal Switch(s)":"No","Voltage - Start Up":"15 V","Frequency - Switching":"1MHz","Operating Temperature":"-55°C ~ 150°C (TJ)","Supplier Device Package":"8-VSSOP","Voltage - Supply (Vcc/Vdd)":"8V ~ 19V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.91","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$2.91000","currency":"USD"},{"qty":10,"price":"$2.61500","currency":"USD"},{"qty":25,"price":"$2.47240","currency":"USD"},{"qty":100,"price":"$2.14280","currency":"USD"},{"qty":250,"price":"$2.03292","currency":"USD"},{"qty":500,"price":"$1.82414","currency":"USD"},{"qty":1000,"price":"$1.53843","currency":"USD"},{"qty":2500,"price":"$1.46151","currency":"USD"},{"qty":5000,"price":"$1.40657","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/d18b5c2fa7f78de57f45a668b8b69766.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the UCC3809P-2 used for?","answer":"The UCC3809P-2 is a current-mode PWM controller for offline and DC-DC converters. It supports boost, buck, flyback, and forward topologies, making it suitable for isolated power supplies in telecom, industrial, and high-reliability systems."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/UCC3809P-2","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/UCC3809P-2 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:45:10.375Z","lastPublished":"2026-07-22T19:45:10.375Z","indexable":true}}