{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LT8312IMS#PBF","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"LT8312IMSPBF","canonicalUrl":"https://icboms.com/analog-devices/LT8312IMSPBF","factsUrl":"https://icboms.com/api/mcp/products/LT8312IMS%23PBF","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices LT8312IMS#PBF, Power Factor Controller, Discontinuous Conduction (DCM), 400kHz fixed switching frequency, 10V ~ 38V supply, -40°C ~ 125°C, 16-TFSOP/MSOP package.","salesMarkdown":"## DCM PFC controller for offline and industrial supplies The Analog Devices LT8312IMS#PBF is a power factor controller operating in Discontinuous Conduction Mode (DCM) at a fixed 400 kHz switching frequency. It accepts a supply voltage from 10V to 38V and operates from -40°C to 125°C. ## 400 kHz fixed frequency — what it means for the magnetic design The 400 kHz fixed switching frequency is a double-edged decision point. In DCM the inductor current resets every cycle, so the core does not accumulate DC flux — that allows a smaller ferrite than a continuous-mode design at the same power. But 400 kHz pushes the switching losses in the MOSFET and the core losses in the inductor; the designer needs to select a fast-recovery diode and a MOSFET with low gate charge and low output capacitance to keep the dissipation manageable. The fixed frequency also simplifies the input EMI filter design because the fundamental and its harmonics are known — no frequency jitter to spread the noise, so the filter corner can be placed just below 400 kHz. ## 80 µA startup current — sizing the startup resistor The 80 µA startup current determines the startup resistor value from the rectified DC bus to the VCC pin. ## Active lifecycle — no LTB risk on this BOM line The LT8312IMS#PBF carries an Active product status. There is no end-of-life notice, no last-time-buy window, and no forced redesign horizon. The buyer can qualify this part into a production BOM with confidence that the factory will continue to ship for the foreseeable future. If the application requires a higher temperature grade, the LT8312HMS#PBF sibling extends the operating range to 150°C while keeping the same DCM architecture and 400 kHz switching — the rest of the BOM stays unchanged.","metaTitle":"LT8312IMS#PBF Power Factor Controller, DCM, 400kHz, 16-MSOP","metaDescription":"LT8312IMS#PBF power factor controller from Analog Devices. Discontinuous Conduction Mode, 400kHz fixed frequency, 10V-38V supply, -40°C to 125°C.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Mode":"Discontinuous Conduction (DCM)","Package":"Bulk","Mounting Type":"Surface Mount","Package / Case":"16-TFSOP (0.118\\\", 3.00mm Width)","lifecycle_stage":"eol_hot","Voltage - Supply":"10V ~ 38V","Current - Startup":"80 µA","Frequency - Switching":"400kHz","Operating Temperature":"-40°C ~ 125°C","Supplier Device Package":"16-MSOP"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$4.78","stockQuantity":0,"priceTiers":[{"qty":63,"price":"$4.78000","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/643b15b5eacfc516bb92f8320233a861.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest alternative to LT8312IMS#PBF?","answer":"The LT8312HMS#PBF is a functional equivalent with the same DCM mode and 400 kHz switching, but rated for -40°C to 150°C instead of -40°C to 125°C. If the ambient temperature stays under 125°C, the IMS variant is the correct choice; above that, step up to the HMS."},{"question":"What does Discontinuous Conduction (DCM) mode mean for this PFC controller?","answer":"DCM means the inductor current falls to zero every switching cycle. That eliminates reverse-recovery losses in the boost diode and allows a smaller inductor, but the peak current is higher than in continuous mode — the MOSFET and diode must be rated for that peak. The LT8312IMS#PBF is designed specifically for DCM boost converters."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/LT8312IMSPBF","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/LT8312IMSPBF 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}}