{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"UC3844AD8","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"UC3844AD8","canonicalUrl":"https://icboms.com/texas-instruments/UC3844AD8","factsUrl":"https://icboms.com/api/mcp/products/UC3844AD8","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments UC3844AD8, current-mode PWM controller, 8-SOIC package, 48% max duty cycle, switching frequency up to 500 kHz, 10 V to 30 V supply.","salesMarkdown":"## 48% duty-cycle ceiling — topology gate The UC3844AD8 is a current-mode PWM controller with a maximum duty cycle of 48%. That hard cap means it is suited for single-switch flyback and forward converters where the duty cycle stays below 50% — prevents transformer saturation in continuous-conduction mode without slope compensation. Switching frequency reaches up to 500 kHz, which lets the design shrink the transformer and output filter inductance compared to 100 kHz-class controllers. The trade-off: gate-drive losses and snubber dissipation scale with frequency, so the thermal budget on the 8-SOIC package needs a check at the upper end. ## Active lifecycle — no obsolescence watch Package is 8-SOIC, supplied in tube.","metaTitle":"UC3844AD8 Current-Mode PWM Controller – TI, 48% Duty","metaDescription":"UC3844AD8 from Texas Instruments: current-mode PWM controller, 48% max duty cycle, 500 kHz switching, 10-30 V supply. Active production.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"Mfr":"Texas Instruments","Series":"-","Package":"Tube","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":"8-SOIC (0.154\\\", 3.90mm Width)","Product Status":"Active","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":"8-SOIC","Voltage - Supply (Vcc/Vdd)":"10V ~ 30V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.3300","priceTiers":[{"qty":1,"price":"$1.33000","currency":"USD"},{"qty":10,"price":"$1.19100","currency":"USD"},{"qty":25,"price":"$1.13080","currency":"USD"},{"qty":100,"price":"$0.92890","currency":"USD"},{"qty":250,"price":"$0.86828","currency":"USD"},{"qty":500,"price":"$0.76734","currency":"USD"},{"qty":1000,"price":"$0.60579","currency":"USD"},{"qty":2500,"price":"$0.57150","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/72463d7c352ecebe0441deb1ec8c852d.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/UC3844AD8/alternatives.json"},"ai":{"faq":[{"question":"Is UC3844AD8 the same as the standard UC3844?","answer":"The UC3844AD8 is the 8-SOIC surface-mount variant of the UC3844. The base part number UC3844 covers both DIP-8 and SOIC-8 packages. The 'A' suffix indicates a tighter tolerance on the oscillator frequency and the 'D8' suffix denotes the 8-SOIC package. Electrical specifications — 48% max duty cycle, 500 kHz switching, 10 V to 30 V supply — are identical to the standard UC3844."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/UC3844AD8","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/UC3844AD8 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}}