{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"UC2844DR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"UC2844DR","canonicalUrl":"https://icboms.com/texas-instruments/UC2844DR","factsUrl":"https://icboms.com/api/mcp/products/UC2844DR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments UC2844DR, current-mode PWM controller, Bulk package, active lifecycle.","salesMarkdown":"## Current-mode PWM controller — what it is and where it fits The Texas Instruments UC2844DR is a current-mode PWM controller designed for off-line and DC-to-DC converter applications. It integrates the oscillator, error amplifier, current-sense comparator, and a totem-pole output stage in a single chip. Typical use includes flyback and forward-converter power supplies where current-mode control simplifies loop compensation and provides inherent pulse-by-pulse current limiting. ## Active lifecycle — no end-of-life concern This removes the sourcing risk of an obsolete part and supports new-design qualification. ## Bulk packaging — suited for prototyping and low-volume builds For a rework bench or a short-run prototype run, Bulk avoids the minimum reel commitment. For high-volume pick-and-place, confirm the reeled alternative (UC2844D or UC2844DR in Tape & Reel) if the line is set up for tape feed. ## 50% maximum duty cycle — a design constraint for flyback converters The UC2844 limits the maximum duty cycle to 50%. This prevents transformer saturation in single-ended topologies like flyback and forward converters by ensuring the core resets every cycle. If your design needs duty cycles above 50% (for a push-pull or half-bridge), the UC2845 sibling offers the same pinout with a higher duty-cycle limit.","metaTitle":"UC2844DR Current-Mode PWM Controller, Active, Bulk","metaDescription":"UC2844DR current-mode PWM controller from TI. Active lifecycle, Bulk package. Confirm availability and pricing at quote time.","metaKeywords":null},"attributes":{"series":"*","packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Series":"*","Package":"Bulk","lifecycle_stage":"eol_hot"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$0.61","stockQuantity":0,"priceTiers":[{"qty":489,"price":"$0.61000","currency":"USD"}]},"links":{"datasheetUrl":"https://rocelec.widen.net/view/pdf/knonfbqoi7/TXII-S-A0001336949-1.pdf?t.download=true&u=5oefqw","sourceUrl":null},"ai":{"faq":[{"question":"What is the maximum duty cycle of the UC2844?","answer":"This is a key constraint for flyback and forward converters. For designs needing higher duty cycles, consider the UC2845 which offers up to 100% duty cycle with the same pinout."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/UC2844DR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/UC2844DR 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}}