{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LT3798MPMSE#PBF","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"LT3798MPMSE~4PBF","canonicalUrl":"https://icboms.com/analog-devices/LT3798MPMSE~4PBF","factsUrl":"https://icboms.com/api/mcp/products/LT3798MPMSE%23PBF","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices LT3798MPMSE#PBF isolated flyback switching controller, 10-38V supply, 500Hz-150kHz switching, -55°C to 150°C, 16-MSOP-EP exposed pad, Tube.","salesMarkdown":"## Flyback controller for isolated supplies — the MP temperature grade The LT3798MPMSE#PBF is an isolated flyback switching controller from Analog Devices, built for applications that demand galvanic isolation between primary and secondary sides of the power supply. The controller drives an external MOSFET — no internal switch — so the power stage current rating and Rds(on) are set by the designer's choice of transistor, not by the IC. That is the full military-screened band — the same silicon, but tested and guaranteed across the wider thermal envelope. For a flyback controller that must start and regulate at -55°C and survive 150°C junction in a sealed enclosure or under-hood environment, this is the grade to specify. ## Switching frequency and supply — tuning the EMI and efficiency trade The switching frequency spans 500 Hz to 150 kHz, set by an external timing resistor. A 500 Hz bottom end is unusually low for a modern controller — useful for very high step-down ratios where the minimum on-time limits the switching frequency, or for synchronizing to a sub-1 kHz external clock. The 150 kHz upper end keeps switching losses manageable in a compact transformer design while staying below the AM broadcast band for conducted EMI compliance. Supply voltage (Vcc/Vdd) is 10 V to 38 V. The 38 V maximum covers 24 V industrial rails with margin for transients, but for a 48 V telecom input a front-end regulator or a different controller with a higher Vcc max would be needed. ## Package and board integration — 16-MSOP-EP exposed pad Housed in a 16-lead TFSOP with exposed pad, 3.00 mm width, the supplier device package is listed as 16-MSOP-EP — the same mechanical outline. The 0.118-inch (3.00 mm) body width is a fine-pitch MSOP footprint — standard for this class of controller — and the Tube packaging means the parts arrive in anti-static tubes, not tape-and-reel, which affects pick-and-place feeder setup for volume production. The part remains in the current portfolio for new and existing designs. ROHS3 compliant (no exemptions), which clears it for global shipment under the EU RoHS directive without needing a certificate of exemption.","metaTitle":"LT3798MPMSE#PBF Flyback Controller, -55 to 150°C, 16-MSOP-EP","metaDescription":"LT3798MPMSE#PBF isolated flyback controller from Analog Devices, active production, -55°C to 150°C range, 10-38V supply, 16-MSOP-EP package. ROHS3 compliant.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Package":"Tube","Topology":"Flyback","Mounting Type":"Surface Mount","Package / Case":"16-TFSOP (0.118\\\", 3.00mm Width) Exposed Pad","lifecycle_stage":"eol_hot","Output Isolation":"Isolated","Internal Switch(s)":"No","Frequency - Switching":"500Hz ~ 150KHz","Operating Temperature":"-55°C ~ 150°C","Supplier Device Package":"16-MSOP-EP","Voltage - Supply (Vcc/Vdd)":"10V ~ 38V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$18.48","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$18.48000","currency":"USD"},{"qty":10,"price":"$16.98000","currency":"USD"},{"qty":25,"price":"$16.27640","currency":"USD"},{"qty":100,"price":"$14.34070","currency":"USD"},{"qty":250,"price":"$13.63688","currency":"USD"},{"qty":500,"price":"$12.75710","currency":"USD"}]},"links":{"datasheetUrl":null,"sourceUrl":null},"ai":{"faq":[{"question":"Will LT3798MPMSE#PBF drop into a board designed for LT3798EMSE#PBF without rewiring?","answer":"Yes — the LT3798MPMSE#PBF, LT3798EMSE#PBF, LT3798HMSE#PBF, and LT3798IMSE#PBF share the same package (16-MSOP-EP), pinout, and electrical specifications. The only difference is the operating temperature range: the MP variant covers -55°C to 150°C, while the E, H, and I grades cover narrower commercial or industrial bands. A board laid out for the EMSE version accepts the MP version without any layout change."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/LT3798MPMSE~4PBF","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/LT3798MPMSE~4PBF 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}}