{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"UCC28780D","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"UCC28780D","canonicalUrl":"https://icboms.com/texas-instruments/UCC28780D","factsUrl":"https://icboms.com/api/mcp/products/UCC28780D","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments UCC28780D, offline flyback controller, topology Flyback, switching frequency up to 1 MHz, isolated output, no internal switch, fault protection OCP/OTP/OVP/SCP, supply 12V~34V, start-up 17.5 V, -40°C~125°C, 16-SOIC, Tray.","salesMarkdown":"## 1 MHz flyback controller — no internal FET, so plan the external switch The Texas Instruments UCC28780D is an offline flyback controller in a 16-SOIC package. It runs a flyback topology with isolated output, switching up to 1 MHz. That frequency lets you shrink the transformer, but the controller has no built-in MOSFET — you pick the external switch, which means the BOM includes a FET plus its gate-drive loop. The supply range is 12 V to 34 V on Vcc, with a 17.5 V start-up threshold. ## Protection set and temperature range Fault protection covers over-current, over-temperature, over-voltage, and short-circuit. That is a solid safety net for an offline supply where a crowbar or latch-off is expected. The junction temperature range is -40°C to 125°C, which puts it in the industrial and automotive-grade bracket — fine for outdoor PSUs, motor drives, or under-hood bias supplies. ## Lifecycle and compliance The UCC28780D is listed as Active in production status and ROHS3 compliant.","metaTitle":"UCC28780D Flyback Controller, Up to 1 MHz, 16-SOIC","metaDescription":"UCC28780D offline flyback controller from TI. Switching frequency up to 1 MHz, isolated output, fault protection, 16-SOIC. Active, RoHS3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Package":"Tray","Topology":"Flyback","Mounting Type":"Surface Mount","Package / Case":"16-SOIC (0.154\\\", 3.90mm Width)","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-SOIC","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":40,"price":"$1.84450","currency":"USD"},{"qty":80,"price":"$1.57138","currency":"USD"},{"qty":240,"price":"$1.47550","currency":"USD"},{"qty":440,"price":"$1.29109","currency":"USD"},{"qty":960,"price":"$1.06975","currency":"USD"},{"qty":2400,"price":"$1.04400","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/ffbbe1f75432d864307bddfa06e8134f.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Does UCC28780D have a built-in MOSFET or require an external switch?","answer":"The UCC28780D has no internal switch. You must add an external MOSFET. The controller provides the gate drive, so the FET selection is part of the BOM — choose one rated for your output power and transformer reset voltage."},{"question":"What is the maximum switching frequency of UCC28780D?","answer":"The UCC28780D switches up to 1 MHz. That is a high ceiling for a flyback controller, enabling a small transformer and reduced output capacitance, but it also pushes the EMI filter design and gate-drive layout."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/UCC28780D","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/UCC28780D 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}}