{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"UCC2808AD-2","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"UCC2808AD-2","canonicalUrl":"https://icboms.com/texas-instruments/UCC2808AD-2","factsUrl":"https://icboms.com/api/mcp/products/UCC2808AD-2","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments UCC2808AD-2 current-mode PWM controller, push-pull topology, 194kHz switching frequency, 49% max duty cycle, 4.1V-15V supply, 8-SOIC package, -40°C to 85°C operating temperature.","salesMarkdown":"## Push-pull PWM controller at 194 kHz The Texas Instruments UCC2808AD-2 is a current-mode PWM controller designed for push-pull topology in step-up or step-down converter applications. It operates at a fixed 194 kHz switching frequency and delivers two transistor-driver outputs with a maximum duty cycle of 49% per output — the hard limit that prevents transformer saturation in push-pull stages. The supply range spans 4.1V to 15V, covering common bias rails from 5V to 12V without an extra regulator. Housed in an 8-SOIC surface-mount package, it is rated for the industrial temperature range of -40°C to 85°C. ## 49% duty cycle — why it matters for the transformer The 49% maximum duty cycle per output is the defining parameter for push-pull design. Exceeding 50% risks flux imbalance and transformer core saturation. With two outputs running complementary phases, the effective duty cycle seen by the transformer is the sum of both outputs, but each leg stays below the 50% cliff. This part enforces that limit internally, so the layout engineer sizes the primary inductance and reset winding around a 49% on-time at 194 kHz. ## Active and available — no LTB risk The UCC2808AD-2 carries an active lifecycle status with ROHS3 compliance. ## 8-SOIC package — rework and footprint notes The 8-SOIC (0.154\", 3.90 mm width) package is a standard surface-mount footprint that reworks cleanly under hot air. Tube shipping medium is the default, but the part is also available in tape-and-reel variants under alternate order codes if the pick-and-place line needs reel feed. No special bake requirements beyond standard MSL handling.","metaTitle":"UCC2808AD-2 Push-Pull PWM Controller, 194kHz, 8-SOIC","metaDescription":"UCC2808AD-2 current-mode push-pull PWM controller from TI. 194kHz switching frequency, 49% max duty cycle, 4.1V-15V supply, -40°C to 85°C. Active, ROHS3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Package":"Tube","Function":"Step-Up/Step-Down","Topology":"Push-Pull","Clock Sync":"No","Output Type":"Transistor Driver","Mounting Type":"Surface Mount","Output Phases":"1","Package / Case":"8-SOIC (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","Control Features":"Frequency Control","Duty Cycle (Max)":"49%","Number of Outputs":"2","Output Configuration":"Positive","Frequency - Switching":"194kHz","Operating Temperature":"-40°C ~ 85°C (TA)","Synchronous Rectifier":"No","Supplier Device Package":"8-SOIC","Voltage - Supply (Vcc/Vdd)":"4.1V ~ 15V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4.05","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$4.05000","currency":"USD"},{"qty":10,"price":"$3.63500","currency":"USD"},{"qty":25,"price":"$3.43680","currency":"USD"},{"qty":100,"price":"$2.97850","currency":"USD"},{"qty":250,"price":"$2.82580","currency":"USD"},{"qty":500,"price":"$2.53558","currency":"USD"},{"qty":1000,"price":"$2.16150","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/d45f90ab0fc6b23285fbba00966c7c9b.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the maximum duty cycle of UCC2808AD-2?","answer":"The maximum duty cycle per output is 49%. This hard limit prevents transformer saturation in push-pull converters by keeping each leg below the 50% threshold."},{"question":"Can UCC2808AD-2 be used in half-bridge or full-bridge converters?","answer":"The UCC2808AD-2 is optimized for push-pull topology. It lacks the complementary output timing and dead-time control needed for half-bridge or full-bridge configurations. For bridge topologies, consider a dedicated bridge controller."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/UCC2808AD-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/UCC2808AD-2 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-17T19:50:00.618Z","lastPublished":"2026-07-17T19:50:00.618Z","indexable":true}}