{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"UC1865J/883B","brand":"Texas Instruments","brandSlug":"texas-instruments","productSlug":"UC1865J-883B","canonicalUrl":"https://icboms.com/texas-instruments/UC1865J-883B","factsUrl":"https://icboms.com/api/mcp/products/UC1865J%2F883B","rawCanonicalId":null},"summary":{"shortDescription":"Unitrode UC1865J/883B switching controller, Step-Up/Step-Down, multi-topology (Boost, Flyback, Forward Converter, Full-Bridge, Half-Bridge, Push-Pull), 2 outputs, Transistor Driver, 50kHz~500kHz, 22V supply, -55°C~125°C, 16-CDIP (0.300\", 7.62mm), Through Hole, Bulk.","salesMarkdown":"## Multi-topology PWM controller in a hermetic ceramic DIP The UC1865J/883B is a current-mode PWM controller from Unitrode (now part of Texas Instruments) built for isolated and non-isolated power topologies. It handles boost, flyback, forward converter, half-bridge, full-bridge, and push-pull designs — a single part that covers a wide range of DC-DC converter architectures. Two transistor-driver outputs deliver complementary or push-pull drive, and the switching frequency is adjustable from 50 kHz to 500 kHz, letting you optimise magnetics size against switching losses. The controller runs on a single 22 V supply rail and includes a soft-start control feature for controlled power-up. The 16-pin ceramic DIP (0.300-inch width, 7.62 mm body) is the standard mil-spec footprint — through-hole assembly, hermetic seal, and full military temperature range from -55°C to 125°C ambient. This package and temperature grade qualify it for avionics, satellite, missile guidance, downhole instrumentation, and other sealed or high-reliability environments where plastic packages are not acceptable. ## Switching frequency and topology flexibility The 50 kHz to 500 kHz switching range is set by an external resistor and capacitor — no clock-sync input on this part, so the converter runs free-running. ## 22 V supply and soft-start The UC1865J/883B operates from a single 22 V supply (Vcc/Vdd). ## Lifecycle and sourcing For BOM lines that need a mil-temp PWM controller in a hermetic DIP, this part is a stable, long-term choice.","metaTitle":"UC1865J/883B PWM Controller, 50kHz-500kHz, 16-CDIP, Active","metaDescription":"UC1865J/883B switching controller from Unitrode/TI. Step-Up/Step-Down, multi-topology: boost, flyback, forward, half/full-bridge, push-pull.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"Not applicable","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Package":"Bulk","Function":"Step-Up, Step-Up/Step-Down","Topology":"Boost, Flyback, Forward Converter, Full-Bridge, Half-Bridge, Push-Pull","Clock Sync":"No","Output Type":"Transistor Driver","Mounting Type":"Through Hole","Output Phases":"1","Package / Case":"16-CDIP (0.300\\\", 7.62mm)","lifecycle_stage":"eol_hot","Control Features":"Soft Start","Number of Outputs":"2","Output Configuration":"Positive","Frequency - Switching":"50kHz ~ 500kHz","Operating Temperature":"-55°C ~ 125°C (TA)","Synchronous Rectifier":"No","Supplier Device Package":"16-CDIP","Voltage - Supply (Vcc/Vdd)":"22V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$50.86","stockQuantity":0,"priceTiers":[{"qty":6,"price":"$50.86000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/8cd5f5e5036515a645b2f4790ee776c8.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the difference between UC1865J/883B and UC1865J?","answer":"The /883B suffix on the UC1865J/883B indicates a military-grade /883 screening and qualification flow — the same base die and function as the UC1865J, but with full MIL-STD-883 processing, burn-in, and traceability. The UC1865J without the /883B suffix is typically a standard commercial or industrial-grade ceramic part without the full mil-screening."},{"question":"Can UC1865J/883B be used as a replacement for UC1864?","answer":"The UC1865J/883B and UC1864 are different PWM controller families with different pinouts and control architectures. The UC1865 is a current-mode controller; the UC1864 is a voltage-mode controller. They are not pin-compatible and should not be treated as direct replacements without a full design review."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/texas-instruments/UC1865J-883B","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/texas-instruments/UC1865J-883B 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}}