{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TL2842D-8","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"TL2842D-8","canonicalUrl":"https://icboms.com/texas-instruments/TL2842D-8","factsUrl":"https://icboms.com/api/mcp/products/TL2842D-8","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments TL2842D-8 PWM controller, Boost/Flyback/Forward topology, up to 500kHz switching, 97% duty cycle, 10V-30V supply, 8-SOIC package, -40°C to 85°C.","salesMarkdown":"## PWM controller for boost, flyback, and forward converters The TL2842D-8 is a fixed-frequency current-mode PWM controller from Texas Instruments, designed for step-up and step-up/step-down topologies including boost, flyback, and forward converters. It drives an external transistor with a single output and operates at switching frequencies up to 500kHz. The controller supports a wide supply range of 10V to 30V and delivers a maximum duty cycle of 97%, allowing high step-up ratios in flyback designs or wide input-voltage regulation in forward converters. Housed in an 8-SOIC surface-mount package, it is suited for industrial power supplies, telecom DC-DC modules, battery chargers, and auxiliary bias rails where a robust, simple controller is needed without synchronous rectification or clock synchronization. ## Switching frequency and duty cycle — what they mean for the transformer The 500kHz switching ceiling lets you shrink the magnetic components compared to a 100kHz design, but the controller lacks clock sync, so multiple units on the same board will beat unless you add external filtering or spread-spectrum techniques. The 97% duty cycle is a practical max — at high line or light load the controller will skip pulses before hitting that limit, which keeps the output in regulation without saturating the core. ## Supply range and temperature grade The 10V to 30V Vcc range covers standard 12V and 24V industrial buses with headroom for transients. The -40°C to 85°C operating temperature covers indoor and outdoor telecom cabinets, factory floor enclosures, and most commercial equipment — but not extended automotive under-hood or downhole environments. ## Active lifecycle — no LTB pressure Listed as Active with ROHS3 compliance. This part is a standard production item through independent distribution — no supply-chain urgency beyond normal lead times. ## Sourcing and fit for the BOM The TL2842D-8 is a current-production, ROHS3-compliant PWM controller in an 8-SOIC package. For dual-sourcing considerations, the UCC2806DWTR is a functional peer (current-mode, boost/flyback/forward) but carries a 50% duty cycle limit and two outputs — check the pinout and compensation network before substituting.","metaTitle":"TL2842D-8 PWM Controller, Boost/Flyback/Forward","metaDescription":"TL2842D-8 PWM controller from Texas Instruments. Step-Up/Step-Down, Boost/Flyback/Forward topology, 97% duty cycle, 10V-30V supply, -40°C to 85°C.","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-Up/Step-Down","Topology":"Boost, Flyback, Forward","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)":"97%","Number of Outputs":"1","Output Configuration":"Positive","Frequency - Switching":"Up to 500kHz","Operating Temperature":"-40°C ~ 85°C (TA)","Synchronous Rectifier":"No","Supplier Device Package":"8-SOIC","Voltage - Supply (Vcc/Vdd)":"10V ~ 30V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.47","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$1.47000","currency":"USD"},{"qty":10,"price":"$1.31300","currency":"USD"},{"qty":25,"price":"$1.24640","currency":"USD"},{"qty":100,"price":"$1.02400","currency":"USD"},{"qty":250,"price":"$0.95720","currency":"USD"},{"qty":500,"price":"$0.84588","currency":"USD"},{"qty":1000,"price":"$0.66780","currency":"USD"},{"qty":2500,"price":"$0.63000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/04bd2b839616d0c086e0d2dca2011cd3.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the difference between TL2842 and TL2842D-8?","answer":"The TL2842D-8 is the surface-mount 8-SOIC variant of the TL2842. The TL2842 itself is typically a DIP-8 package. Functionally they are identical — same current-mode PWM controller, same 97% duty cycle, same 500kHz switching limit. The D-8 suffix designates the SOIC footprint."},{"question":"What are the applications of TL2842D-8?","answer":"Boost, flyback, and forward converters in industrial power supplies, telecom DC-DC modules, battery chargers, and auxiliary bias rails. The wide 10V-30V supply range and 97% duty cycle suit unregulated 24V bus inputs and high step-up ratio designs."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/TL2842D-8","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/TL2842D-8 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}}