{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"UC2842P","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"UC2842P","canonicalUrl":"https://icboms.com/texas-instruments/UC2842P","factsUrl":"https://icboms.com/api/mcp/products/UC2842P","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments UC2842P switching controller, 8-DIP (0.300\", 7.62mm) through-hole package, Boost/Buck/Buck-Boost/Flyback/Forward topology, up to 500 kHz switching frequency, 97% max duty cycle, 12V~28V supply.","salesMarkdown":"## Active production — still a current BOM line That means it's still a valid line-item for new builds and replacement orders, not a part you need to chase through surplus channels. One catch worth flagging: the UC2842P is RoHS non-compliant, so it carries the legacy tin/lead finish. If your assembly line is RoHS-exempt (military, aerospace, or medical with an exemption) this is fine; if you need full RoHS compliance, you'll want the lead-free variant. ## What the switching controller does — and the topologies it handles The UC2842P is a current-mode PWM controller that drives an external transistor switch — it's the brains, not the power stage. It supports Boost, Buck, Buck-Boost, Flyback, and Forward topologies, which covers a wide range of isolated and non-isolated DC-DC converters. Switching frequency goes up to 500 kHz. At that speed the magnetics shrink — a flyback transformer for a 100 kHz design is noticeably smaller than one running at 50 kHz. The 97% max duty cycle is generous enough for most flyback and forward designs where you need a long on-time to transfer energy. Supply voltage range is 12 V to 28 V, which suits offline flyback converters (rectified mains through a startup resistor) or industrial 24 V rails. The output configuration is Positive, Isolation Capable — meaning you can use it with an optocoupler or transformer feedback for galvanic isolation. ## Through-hole 8-DIP — breadboard and bench friendly The UC2842P comes in an 8-DIP (0.300\", 7.62mm) through-hole package, supplier device package 8-PDIP. That 0.100-inch pin pitch fits standard perfboard and breadboards — you can prototype this on a solderless breadboard without an adapter. That's industrial grade — fine for a benchtop supply, an industrial control board, or an outdoor telecom enclosure. Not rated for under-hood automotive, but the -40°C low end covers cold-start scenarios. The UC2842P is sourced through independent distribution channels. No stock-holding claim — we quote per RFQ.","metaTitle":"Texas Instruments UC2842P Switching Controller, 8-DIP","metaDescription":"Texas Instruments UC2842P switching controller, 8-DIP through-hole package. Active production, RoHS non-compliant. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"RoHS non-compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Package":"Bulk","Function":"Step-Up, Step-Down, Step-Up/Step-Down","Topology":"Boost, Buck, Buck-Boost, Flyback, Forward","Clock Sync":"No","Output Type":"Transistor Driver","Mounting Type":"Through Hole","Output Phases":"1","Package / Case":"8-DIP (0.300\\\", 7.62mm)","lifecycle_stage":"eol_hot","Control Features":"Frequency Control","Duty Cycle (Max)":"97%","Number of Outputs":"1","Output Configuration":"Positive, Isolation Capable","Frequency - Switching":"Up to 500kHz","Operating Temperature":"-40°C ~ 85°C (TA)","Synchronous Rectifier":"No","Supplier Device Package":"8-PDIP","Voltage - Supply (Vcc/Vdd)":"12V ~ 28V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.14","stockQuantity":0,"priceTiers":[{"qty":263,"price":"$1.14000","currency":"USD"}]},"links":{"datasheetUrl":null,"sourceUrl":null},"ai":{"faq":[{"question":"What is UC2842P's listed function?","answer":"The UC2842P is a SWITCHING CONTROLLER with Step-Up, Step-Down, and Step-Up/Step-Down functions. It supports Boost, Buck, Buck-Boost, Flyback, and Forward topologies."},{"question":"Will UC2842P drop into a board designed for UCC2806DWTR?","answer":"No — the UCC2806DWTR is a surface-mount SOIC package, while the UC2842P is through-hole 8-DIP. The pinout and supply voltage also differ. They are not drop-in compatible."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/UC2842P","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/UC2842P 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}}