{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"UC3854N","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"UC3854N","canonicalUrl":"https://icboms.com/texas-instruments/UC3854N","factsUrl":"https://icboms.com/api/mcp/products/UC3854N","rawCanonicalId":null},"summary":{"shortDescription":"Texas Instruments UC3854N PFC controller, average current mode, 200kHz switching frequency, 14.5V~30V supply, 1.5 mA startup current, 16-DIP (0.300\", 7.62mm) through-hole package, 0°C~70°C operating temperature, 16-PDIP.","salesMarkdown":"## Average current mode PFC control at 200 kHz The Texas Instruments UC3854N is a power factor correction (PFC) controller operating in average current mode, switching at 200 kHz. This control topology continuously monitors the average inductor current against a sinusoidal reference, producing a low-distortion current waveform that tracks the line voltage — the dominant approach for PFC stages above 300 W where THD and EMI matter. The 14.5 V to 30 V supply range means the bias rail can be derived from an auxiliary winding or a separate regulator without tight tolerance. Startup current is 1.5 mA, which sets the minimum current the startup resistor must deliver before the auxiliary winding takes over — a key number for sizing the bootstrap resistor and the VCC hold-up capacitor. ## Through-hole DIP package and commercial temperature grade Housed in a 16-pin DIP with 0.300-inch (7.62 mm) body width, the UC3854N uses the standard 16-PDIP footprint. Through-hole mounting suits prototyping, low-volume production, and boards where rework access matters — the pin pitch allows hand-soldering and probe attachment without a fixture. It is intended for controlled indoor environments — telecom rectifiers, server PSUs, and industrial power supplies with forced airflow — not for extended-temperature or sealed enclosures where internal heating pushes the ambient above 70°C.","metaTitle":"Texas Instruments UC3854N PFC Controller","metaDescription":"Texas Instruments UC3854N PFC controller in average current mode, 200kHz switching, 14.5V-30V supply, 1.5 mA startup, 16-DIP package. Active, RoHS3 compliant.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Microcontrollers & Processors (MCU / MPU / DSP)"],"specifications":{"Mode":"Average Current","Package":"Tube","Mounting Type":"Through Hole","Package / Case":"16-DIP (0.300\\\", 7.62mm)","lifecycle_stage":"eol_hot","Voltage - Supply":"14.5V ~ 30V","Current - Startup":"1.5 mA","Frequency - Switching":"200kHz","Operating Temperature":"0°C ~ 70°C","Supplier Device Package":"16-PDIP"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4.37","priceTiers":[{"qty":1,"price":"$4.37000","currency":"USD"},{"qty":10,"price":"$3.92100","currency":"USD"},{"qty":25,"price":"$3.70680","currency":"USD"},{"qty":100,"price":"$3.21250","currency":"USD"},{"qty":250,"price":"$3.04772","currency":"USD"},{"qty":500,"price":"$2.73470","currency":"USD"},{"qty":1000,"price":"$2.30638","currency":"USD"},{"qty":2500,"price":"$2.19106","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/41947c123d17e491da9c045459adb12e.pdf","sourceUrl":null,"alternativesUrl":"https://icboms.com/api/mcp/products/UC3854N/alternatives.json"},"ai":{"faq":[{"question":"What is the UC3854N's operating mode and switching frequency?","answer":"The UC3854N operates in average current mode with a 200 kHz switching frequency. Average current mode PFC provides continuous inductor current with low THD and is the standard topology for power stages above 300 W."},{"question":"What package does the UC3854N come in?","answer":"It ships in tube packaging."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/UC3854N","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/UC3854N 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}}