{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"UC3825DW","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"UC3825DW","canonicalUrl":"https://icboms.com/texas-instruments/UC3825DW","factsUrl":"https://icboms.com/api/mcp/products/UC3825DW","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments UC3825DW PWM controller, multi-topology (Buck, Boost, Flyback, Forward, Full/Half-Bridge, Push-Pull), 340-460kHz, 85% duty cycle, 16-SOIC wide-body, Tube.","salesMarkdown":"## Multi-topology PWM controller in 16-SOIC wide-body The Texas Instruments UC3825DW is a current-mode PWM controller that supports step-up, step-down, and step-up/step-down topologies including Buck, Boost, Flyback, Forward Converter, Full-Bridge, Half-Bridge, and Push-Pull — a single part number covers isolated and non-isolated designs across a wide power range. Housed in a 16-SOIC wide-body package (7.50mm width), the controller drives two external MOSFETs via its transistor-driver outputs, making it suited for half-bridge and push-pull stages where complementary gate drive is needed. ## 340–460 kHz switching with 85% duty ceiling The switching frequency range of 340 kHz to 460 kHz sets the transformer/inductor sizing and EMI filter corner — a 400 kHz design shrinks magnetics compared to 100 kHz controllers but requires attention to gate-drive layout and snubber design. An 85% maximum duty cycle limits the step-down ratio in a single stage; for high Vout/Vin ratios, a two-stage or transformer-coupled topology is needed. ## Control features and temperature grade Control features include Current Limit, Enable, Frequency Control, Ramp, and Soft Start — the soft-start pin allows programmable inrush current limiting, while the frequency-control pin lets the designer synchronize or adjust the oscillator with an external resistor. The output configuration is positive, with two outputs driving external transistors; no synchronous rectifier is integrated, so the designer must add external FETs and a rectifier stage for high-efficiency designs. ROHS3 compliant, with no restricted-substance exemptions that would complicate EU or global BOM compliance.","metaTitle":"Texas Instruments UC3825DW PWM Controller, 16-SOIC","metaDescription":"UC3825DW active PWM controller from TI. Multi-topology (Buck, Boost, Flyback, Bridge). 340-460kHz, 85% duty, 8.4-30V supply. 16-SOIC tube. ROHS3.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Package":"Tube","Function":"Step-Up, Step-Down, Step-Up/Step-Down","Topology":"Buck, Boost, Flyback, Forward Converter, Full-Bridge, Half-Bridge, Push-Pull","Clock Sync":"No","Output Type":"Transistor Driver","Mounting Type":"Surface Mount","Output Phases":"1","Package / Case":"16-SOIC (0.295\\\", 7.50mm Width)","lifecycle_stage":"eol_hot","Control Features":"Current Limit, Enable, Frequency Control, Ramp, Soft Start","Duty Cycle (Max)":"85%","Number of Outputs":"2","Output Configuration":"Positive","Frequency - Switching":"340kHz ~ 460kHz","Operating Temperature":"0°C ~ 70°C (TA)","Synchronous Rectifier":"No","Supplier Device Package":"16-SOIC","Voltage - Supply (Vcc/Vdd)":"8.4V ~ 30V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$5.95","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$5.95000","currency":"USD"},{"qty":10,"price":"$5.34600","currency":"USD"},{"qty":25,"price":"$5.05400","currency":"USD"},{"qty":100,"price":"$4.38000","currency":"USD"},{"qty":250,"price":"$4.15536","currency":"USD"},{"qty":500,"price":"$3.72860","currency":"USD"},{"qty":1000,"price":"$3.17850","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/e3dfa89af4b0dbe2db89cf9c3e19ba1b.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What compliance documentation does Texas Instruments provide for UC3825DW?","answer":"The UC3825DW is ROHS3 compliant, meaning it meets the EU RoHS directive without exempted substances."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/UC3825DW","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/UC3825DW 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}}