{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"UC3846DWTR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"UC3846DWTR","canonicalUrl":"https://icboms.com/texas-instruments/UC3846DWTR","factsUrl":"https://icboms.com/api/mcp/products/UC3846DWTR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments UC3846DWTR current-mode PWM controller, 500 kHz switching, 50% max duty cycle, 6.95 V to 40 V supply, 16-SOIC package, active production.","salesMarkdown":"## What this controller does and where it fits The 0°C to 70°C operating range limits this part to commercial indoor equipment — bench supplies, telecom line cards in conditioned racks, appliance power stages. Not rated for automotive or outdoor enclosures without active cooling or a temperature-grade upgrade. ## Sourcing and lifecycle — active, no LTB watch needed The UC3846DWTR carries an active product status with ROHS3 compliance. No last-time-buy or obsolescence notice is in effect, so it can be specified into new production without a near-term requalification risk.","metaTitle":"UC3846DWTR PWM Controller, 500 kHz, 16-SOIC, Active","metaDescription":"UC3846DWTR current-mode PWM controller from TI. 500 kHz switching, 50% max duty, 6.95-40 V supply. Boost, flyback, push-pull. Active, ROHS3. Available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Package":"Tape & Reel (TR); Cut Tape (CT)","Function":"Step-Up, Step-Up/Step-Down","Topology":"Boost, Flyback, Forward Converter, Half-Bridge, Push-Pull","Clock Sync":"Yes","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, Soft Start","Duty Cycle (Max)":"50%","Number of Outputs":"2","Output Configuration":"Positive","Frequency - Switching":"500kHz","Operating Temperature":"0°C ~ 70°C (TA)","Synchronous Rectifier":"Yes","Supplier Device Package":"16-SOIC","Voltage - Supply (Vcc/Vdd)":"6.95V ~ 40V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$3.82","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$3.82000","currency":"USD"},{"qty":10,"price":"$3.42800","currency":"USD"},{"qty":25,"price":"$3.24120","currency":"USD"},{"qty":100,"price":"$2.80910","currency":"USD"},{"qty":250,"price":"$2.66500","currency":"USD"},{"qty":500,"price":"$2.39130","currency":"USD"},{"qty":1000,"price":"$2.03850","currency":"USD"},{"qty":2000,"price":"$2.03850","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/368655a34305c4e331930629d8ba0153.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Can UC3846DWTR be used for a flyback converter?","answer":"Yes — flyback is among its listed topologies. The 50% max duty cycle limits the step-up ratio, but for typical flyback applications (e.g., 24 V input to 5 V or 12 V output) it works well. The 500 kHz switching allows a small transformer."},{"question":"What is the difference between UC3846 and UC3846DWTR?","answer":"The UC3846DWTR is the surface-mount 16-SOIC variant of the UC3846. The 'DWTR' suffix indicates the wide-body SOIC package and Tape & Reel shipping format. The controller core and ratings are identical."},{"question":"What is UC3846DWTR used for?","answer":"It is a current-mode PWM controller for dc-dc converters in boost, flyback, forward, half-bridge, and push-pull topologies. Typical applications include telecom power modules, industrial brick converters, and bench power supplies operating in commercial temperature environments."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/UC3846DWTR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/UC3846DWTR 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}}