{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"UC2843AQDRHT","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"UC2843AQDRHT","canonicalUrl":"https://icboms.com/texas-instruments/UC2843AQDRHT","factsUrl":"https://icboms.com/api/mcp/products/UC2843AQDRHT","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments UC2843AQDRHT, Automotive AEC-Q100 current-mode PWM controller, up to 500 kHz switching, 96% max duty cycle, 7.6 V to 30 V supply, -40°C to 125°C, 14-SOIC package.","salesMarkdown":"## Current-mode PWM controller for automotive and industrial power supplies The Texas Instruments UC2843AQDRHT is a current-mode PWM controller designed for step-up (boost), buck, flyback, and forward converter topologies. It delivers a single transistor-driver output with a maximum duty cycle of 96%, allowing wide conversion ratios without pulse-skipping. The controller operates from a 7.6 V to 30 V supply and switches at frequencies up to 500 kHz, giving designers flexibility to shrink magnetics or optimize for efficiency. The 96% maximum duty cycle allows the controller to keep the switch on for nearly the whole period. The 500 kHz upper switching frequency lets you use smaller magnetics and output capacitors. ## Automotive-grade reliability with AEC-Q100","metaTitle":"UC2843AQDRHT PWM Controller, AEC-Q100, Up to 500 kHz","metaDescription":"UC2843AQDRHT current-mode PWM controller from TI, AEC-Q100 qualified, up to 500 kHz switching, 96% duty cycle, -40°C to 125°C.","metaKeywords":null},"attributes":{"series":"Automotive, AEC-Q100","packageCase":null,"mountingType":null,"rohsStatus":"Not applicable","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Series":"Automotive, AEC-Q100","Package":"Bulk","Function":"Step-Up","Topology":"Boost, Buck, Flyback, Forward","Clock Sync":"No","Output Type":"Transistor Driver","Mounting Type":"Surface Mount","Output Phases":"1","Package / Case":"14-SOIC (0.154\\\", 3.90mm Width)","lifecycle_stage":"eol_hot","Control Features":"Frequency Control","Duty Cycle (Max)":"96%","Number of Outputs":"1","Output Configuration":"Positive, Isolation Capable","Frequency - Switching":"Up to 500kHz","Operating Temperature":"-40°C ~ 125°C (TA)","Synchronous Rectifier":"No","Supplier Device Package":"14-SOIC","Voltage - Supply (Vcc/Vdd)":"7.6V ~ 30V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1.31","priceTiers":[{"qty":229,"price":"$1.31000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/37c9410fec7cbd996a1f7c533b8da9cb.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/UC2843AQDRHT/alternatives.json"},"ai":{"faq":[{"question":"What is the maximum switching frequency of UC2843AQDRHT?","answer":"The UC2843AQDRHT can switch at frequencies up to 500 kHz. This allows designers to use smaller magnetics and capacitors, though higher frequencies increase switching losses and require careful layout."},{"question":"Can UC2843AQDRHT be used in flyback converters?","answer":"Yes, the UC2843AQDRHT supports flyback topology as one of its listed topologies (boost, buck, flyback, forward). The 96% maximum duty cycle is especially useful in flyback designs that need a wide input-to-output voltage ratio."},{"question":"Does UC2843AQDRHT support clock sync?","answer":"No, the UC2843AQDRHT does not support clock synchronization. It is a free-running current-mode controller with frequency control via an external RC network."},{"question":"What is the equivalent of UC2843AQDRHT?","answer":"The UC2843AQDRHT is a current-mode PWM controller in the UCx84x family. A functional peer is the UCC2806DWTR, which also supports boost, flyback, and forward topologies but has a 50% maximum duty cycle and two outputs, and operates over -40°C to 85°C — not the full automotive temperature range. The LM5150QURUMRQ1 is another automotive-grade (AEC-Q100) boost controller with clock sync and a 2.3 MHz switching frequency, but it is a different topology fit (boost only). Neither is a direct pin-compatible replacement; verify the pinout and control features for your design."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/UC2843AQDRHT","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/UC2843AQDRHT 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}}