{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"UCC28780RTET","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"UCC28780RTET","canonicalUrl":"https://icboms.com/texas-instruments/UCC28780RTET","factsUrl":"https://icboms.com/api/mcp/products/UCC28780RTET","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments UCC28780RTET offline flyback controller, no internal switch, 1 MHz switching, 16-WFQFN exposed pad, surface mount, isolated output, fault protection.","salesMarkdown":"## Flyback controller for isolated offline supplies The Texas Instruments UCC28780RTET is an offline flyback controller designed for isolated AC-DC power supplies. It operates without an internal switch, relying on an external MOSFET to handle the power stage. Switching frequency reaches up to 1 MHz, which lets the transformer shrink — a 1 MHz flyback can use a smaller core than a 65 kHz design, saving board space in compact adapters or auxiliary supplies. The supply range spans 12 V to 34 V on the Vcc pin, and the start-up threshold is 17.5 V — typical for a bias winding that comes up after the bulk cap charges through the start-up resistor. ## Protection set and temperature grade Built-in fault protection covers overcurrent, overtemperature, overvoltage, and short circuit — the controller latches off or retries depending on the fault, so a downstream MOSFET sees less stress during a hard short on the secondary. ## Active production and compliance No pin-compatible second source is documented from TI or another vendor; the BOM line is single-sourced to this order code.","metaTitle":"Texas Instruments UCC28780RTET Flyback Controller, 1MHz","metaDescription":"Active-production flyback controller from Texas Instruments. Switching frequency up to 1 MHz, 12V–34V supply, -40°C to 125°C junction temp. 16-WQFN package.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Package":"Tape & Reel (TR); Cut Tape (CT)","Topology":"Flyback","Mounting Type":"Surface Mount","Package / Case":"16-WFQFN Exposed Pad","lifecycle_stage":"eol_hot","Fault Protection":"Over Current, Over Temperature, Over Voltage, Short Circuit","Output Isolation":"Isolated","Internal Switch(s)":"No","Voltage - Start Up":"17.5 V","Frequency - Switching":"Up to 1MHz","Operating Temperature":"-40°C ~ 125°C (TJ)","Supplier Device Package":"16-WQFN (3x3)","Voltage - Supply (Vcc/Vdd)":"12V ~ 34V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2.18","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$2.18000","currency":"USD"},{"qty":10,"price":"$1.95500","currency":"USD"},{"qty":25,"price":"$1.84440","currency":"USD"},{"qty":100,"price":"$1.57140","currency":"USD"},{"qty":250,"price":"$1.47552","currency":"USD"},{"qty":500,"price":"$1.29108","currency":"USD"},{"qty":1250,"price":"$1.06975","currency":"USD"},{"qty":2500,"price":"$1.04400","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/ffbbe1f75432d864307bddfa06e8134f.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest pin-compatible alternative to the UCC28780RTET?","answer":"Texas Instruments does not list a pin-compatible second source or an official successor for the UCC28780RTET. The part is single-sourced; no cross-reference is documented in the discrete semiconductors family."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/UCC28780RTET","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/UCC28780RTET when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:49:49.435Z","lastPublished":"2026-08-11T15:49:49.435Z","indexable":true}}