{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"UC3842DTR","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"UC3842DTR","canonicalUrl":"https://icboms.com/texas-instruments/UC3842DTR","factsUrl":"https://icboms.com/api/mcp/products/UC3842DTR","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments UC3842DTR, Current Mode PWM Controller, 12V ~ 28V Supply, 11 mA Supply Current, 0°C ~ 70°C, Surface Mount, 14-SOIC Package, Tape & Reel.","salesMarkdown":"## Current-mode PWM controller in 14-SOIC The UC3842DTR is a fixed-frequency current-mode PWM controller from Texas Instruments, designed for off-line and DC-to-DC converter applications. It operates from a supply voltage of 12V to 28V and draws a typical supply current of 11 mA. The controller is optimized for current-mode control, which provides improved line regulation, enhanced dynamic response, and simplified loop compensation compared to voltage-mode controllers. Housed in a 14-SOIC surface-mount package, it is intended for commercial temperature range environments (0°C to 70°C) — typical for AC-DC adapters, battery chargers, and open-frame power supplies where ambient temperatures stay moderate. ## Supply range and current draw — BOM implications The 12V to 28V supply range covers the standard bias rails used in many flyback and forward converters. The 11 mA supply current is the IC's own quiescent draw. ROHS3 compliance is confirmed, so it meets current EU RoHS requirements without lead-free exemption.","metaTitle":"UC3842DTR PWM Controller, Current Mode, 12V-28V, 14-SOIC","metaDescription":"UC3842DTR current-mode PWM controller IC from Texas Instruments. 11 mA supply, 12V-28V input, 14-SOIC. Active, ROHS3 compliant.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Power Management (PMIC / Gate Driver)"],"specifications":{"Series":"-","Packaging":"Tape & Reel (TR) Cut Tape (CT)","Part Status":"Active","Applications":"PWM Controller","Manufacturer":"Texas Instruments","Mounting Type":"Surface Mount","Package / Case":"14-SOIC (0.154\\\", 3.90mm Width)","Voltage - Input":"-0.3V ~ 6.3V","lifecycle_stage":"eol_hot","Current - Supply":"11 mA","Voltage - Supply":"12V ~ 28V","Base Product Number":"UC3842","Operating Temperature":"0°C ~ 70°C (TA)","Supplier Device Package":"14-SOIC"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.2400","priceTiers":[{"qty":1,"price":"$1.36000","currency":"USD"},{"qty":10,"price":"$1.21600","currency":"USD"},{"qty":25,"price":"$1.15440","currency":"USD"},{"qty":100,"price":"$0.94840","currency":"USD"},{"qty":250,"price":"$0.88652","currency":"USD"},{"qty":500,"price":"$0.78344","currency":"USD"},{"qty":1000,"price":"$0.61851","currency":"USD"},{"qty":2500,"price":"$0.58350","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/3edad1712993fb3b1751953d793dcfb6.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/UC3842DTR/alternatives.json"},"ai":{"faq":[{"question":"Is UC3842DTR lead-free?","answer":"Yes, the UC3842DTR is ROHS3 Compliant, meaning it meets the current EU RoHS directive for lead-free and other restricted substances. No exemption applies."},{"question":"How does UC3842DTR compare to the UCC2806DWTR?","answer":"The UCC2806DWTR is a different PWM controller family: it has two outputs (vs single output on UC3842DTR), a lower maximum duty cycle (50% vs typical 96% for UC3842), and a wider temperature range (-40°C to 85°C vs 0°C to 70°C). The UCC2806DWTR also supports synchronous rectification and includes an enable function. It is not a direct pin-compatible replacement for the UC3842DTR, but could serve as a functional alternative in designs requiring dual outputs or wider temperature operation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/UC3842DTR","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/UC3842DTR 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}}