{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"UC3867DW","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"UC3867DW","canonicalUrl":"https://icboms.com/texas-instruments/UC3867DW","factsUrl":"https://icboms.com/api/mcp/products/UC3867DW","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments UC3867DW PWM controller, step-up/step-down, full-bridge/half-bridge/push-pull topology, 2 outputs, 50-500 kHz, 16-SOIC (7.5mm width), tube.","salesMarkdown":"## Multi-topology PWM controller in wide 16-SOIC The UC3867DW is a PWM controller from Texas Instruments that handles step-up/step-down conversion across full-bridge, half-bridge, and push-pull topologies. It drives external transistors via two outputs — typically a complementary high-side/low-side pair for bridge circuits. Switching frequency spans 50 kHz to 500 kHz, giving the designer room to trade off magnetics size against switching losses. The 100% maximum duty cycle is essential for push-pull and forward converters that need full on-time for transformer reset. Supply voltage range is 7 V to 22 V, compatible with common bias rails from auxiliary windings or regulated supplies. The built-in soft start limits output overshoot during power-up. ## Commercial temperature grade and package fit The wider body gives better creepage clearance for offline power supplies. Mounting is surface-mount; the supplier device package is 16-SOIC. Supplied in tube packaging — relevant for small-bench repairs or prototype runs where a full reel isn't needed. For larger volumes, check if tape-and-reel packaging is available through the supply channel. No synchronous rectifier output, and clock sync is not supported — this is a standalone controller, not designed for multi-phase interleaving or external clock alignment.","metaTitle":"Texas Instruments UC3867DW PWM Controller, Step-Up/Step-Down","metaDescription":"UC3867DW PWM controller from TI, step-up/step-down function, 50-500 kHz switching, 2 outputs, 16-SOIC package. Active, ROHS3 compliant. Request a quote.","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","Topology":"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":"Soft Start","Duty Cycle (Max)":"100%","Number of Outputs":"2","Output Configuration":"Positive","Frequency - Switching":"50kHz ~ 500kHz","Operating Temperature":"0°C ~ 70°C (TA)","Synchronous Rectifier":"No","Supplier Device Package":"16-SOIC","Voltage - Supply (Vcc/Vdd)":"7V ~ 22V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$6.93","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$6.93000","currency":"USD"},{"qty":10,"price":"$6.22100","currency":"USD"},{"qty":25,"price":"$5.88160","currency":"USD"},{"qty":100,"price":"$5.09720","currency":"USD"},{"qty":250,"price":"$4.83584","currency":"USD"},{"qty":500,"price":"$4.33918","currency":"USD"},{"qty":1000,"price":"$3.69900","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/8cd5f5e5036515a645b2f4790ee776c8.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest functional second-source — UCC2806DWTR?","answer":"The UCC2806DWTR is a different part: it supports boost, flyback, and forward topologies with synchronous rectification and a wider temperature range (-40°C to 85°C), but its maximum duty cycle is 50% versus the UC3867DW's 100%. The UC3867DW also lacks clock sync and synchronous rectification. These are not pin-compatible swaps without reviewing the application circuit."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/UC3867DW","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/UC3867DW 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}}