{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"UC2842D","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"UC2842D","canonicalUrl":"https://icboms.com/texas-instruments/UC2842D","factsUrl":"https://icboms.com/api/mcp/products/UC2842D","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments UC2842D, current-mode PWM controller, boost/buck-boost/flyback/forward topologies, 1 output, transistor driver, up to 500kHz switching, 12V–28V supply, 14-SOIC, -40°C to 85°C.","salesMarkdown":"## What the UC2842D is and where it fits The Texas Instruments UC2842D is a current-mode PWM controller built for off-line and DC-DC converter designs. It handles boost, buck, buck-boost, flyback, and forward topologies with a single transistor-driver output. The switching frequency goes up to 500 kHz, which lets you shrink the magnetics compared to older 100 kHz controllers. Supply range is 12 V to 28 V, so it runs straight off a 12 V or 24 V industrial bus without an extra regulator. The 14-SOIC package keeps the board footprint small for a through-hole alternative. ## 97% duty cycle — what it buys you A 97 % maximum duty cycle means the controller can hold the switch on nearly the whole cycle. In a flyback or boost converter that translates to a wider input-to-output step-down ratio without needing a separate start-up winding. It also helps maintain regulation through low line-voltage dips — useful in industrial PSUs that see brownout conditions. ## Temperature grade and operating environment Rated for -40°C to 85°C ambient, this part fits industrial control cabinets, motor drives, outdoor telecom rectifiers, and factory-floor power supplies. The 14-SOIC package is surface-mount, so it goes through standard reflow; store the reels dry — MSL level is typical for this package class, and moisture exposure before reflow can cause popcorning. ## Lifecycle and sourcing reality ROHS3 compliant. It is a standard catalog part from TI, so availability through independent distribution is steady. We source and quote it to order against an RFQ; current pricing and lead time are confirmed at quote time. No last-time-buy risk to plan for.","metaTitle":"UC2842D PWM Controller, Boost/Flyback, 500kHz, 14-SOIC","metaDescription":"UC2842D current-mode PWM controller from TI. Supports boost, buck-boost, flyback, forward topologies. Switching frequency up to 500kHz. 14-SOIC package.","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, Step-Up/Step-Down","Topology":"Boost, Buck, Buck-Boost, Flyback, Forward","Clock Sync":"No","Output Type":"Transistor Driver","Mounting Type":"Surface Mount","Output Phases":"1","Package / Case":"14-SOIC (0.154\\\", 3.90mm Width)","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":"14-SOIC","Voltage - Supply (Vcc/Vdd)":"12V ~ 28V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.56","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.56000","currency":"USD"},{"qty":10,"price":"$1.40400","currency":"USD"},{"qty":25,"price":"$1.32480","currency":"USD"},{"qty":100,"price":"$1.12890","currency":"USD"},{"qty":250,"price":"$1.06000","currency":"USD"},{"qty":500,"price":"$0.92750","currency":"USD"},{"qty":1000,"price":"$0.76850","currency":"USD"},{"qty":2500,"price":"$0.75000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/3edad1712993fb3b1751953d793dcfb6.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the function and topology support of UC2842D?","answer":"The UC2842D is a current-mode PWM controller supporting boost, buck, buck-boost, flyback, and forward topologies. It provides a single transistor-driver output and operates at switching frequencies up to 500 kHz."},{"question":"What is the operating frequency of UC2842D?","answer":"The switching frequency is programmable up to 500 kHz, allowing smaller transformer and inductor sizes compared to legacy 100 kHz controllers."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/UC2842D","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/UC2842D 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}}