{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"UC3844ADTRG4","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"UC3844ADTRG4","canonicalUrl":"https://icboms.com/texas-instruments/UC3844ADTRG4","factsUrl":"https://icboms.com/api/mcp/products/UC3844ADTRG4","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments UC3844ADTRG4 current-mode PWM controller, 14-SOIC surface-mount package, 48% max duty cycle, up to 500 kHz switching, 10 V to 30 V supply.","salesMarkdown":"## 48 % duty-cycle ceiling — no shoot-through worry The UC3844ADTRG4 is a current-mode PWM controller from Texas Instruments that tops out at a 48% duty cycle, which means the output transistor driver is forced off for more than half the period. In a flyback or forward converter that 48% cap prevents any chance of core saturation from overlapping drive pulses — the off-time is baked in, not left to the loop. It switches up to 500 kHz. No last-time-buy notice, no end-of-life letter on file. Sourced to order against a BOM quantity.","metaTitle":"UC3844ADTRG4 Current-Mode PWM Controller, Up to 500 kHz","metaDescription":"UC3844ADTRG4 current-mode PWM controller from TI. 48% max duty cycle, up to 500 kHz switching. Boost, buck, flyback, forward topologies. 14-SOIC.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"Mfr":"Texas Instruments","Series":"-","Package":"Tape & Reel (TR)","Function":"Step-Up, Step-Down, Step-Up/Step-Down","Topology":"Boost, Buck, 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)":"48%","Number of Outputs":"1","Serial Interfaces":"-","Base Product Number":"UC3844","Output Configuration":"Positive, Isolation Capable","Frequency - Switching":"Up to 500kHz","Operating Temperature":"0°C~70°C(TA)","Synchronous Rectifier":"No","Supplier Device Package":"14-SOIC","Voltage - Supply (Vcc/Vdd)":"10V ~ 30V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.icboms.com/72463d7c352ecebe0441deb1ec8c852d.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/UC3844ADTRG4/alternatives.json"},"ai":{"faq":[{"question":"What is the maximum duty cycle of UC3844ADTRG4?","answer":"48%. That is the hard limit — the output driver is forced off for more than half the period, which prevents overlapping drive pulses in push-pull or half-bridge topologies."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/UC3844ADTRG4","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/UC3844ADTRG4 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T18:03:28.771Z","lastPublished":"2026-07-22T18:03:28.771Z","indexable":true}}