{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LTC3780EUH#TRPBF","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"LTC3780EUH~4TRPBF","canonicalUrl":"https://icboms.com/analog-devices/LTC3780EUH~4TRPBF","factsUrl":"https://icboms.com/api/mcp/products/LTC3780EUH%23TRPBF","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices LTC3780EUH#TRPBF, Step-Up/Step-Down DC-DC Controller, Buck-Boost topology, 4V to 30V supply, 200kHz to 400kHz switching, 32-WFQFN Exposed Pad, Tape & Reel.","salesMarkdown":"## Buck-boost controller with synchronous rectification The LTC3780EUH#TRPBF is a single-phase, positive-output buck-boost switching regulator controller from Analog Devices. It drives external N-channel MOSFETs in a four-switch topology that regulates the output whether the input rail is above, below, or equal to the target voltage — no need for a separate boost stage or a post-regulator when the battery voltage crosses the output setpoint. The controller operates from a 4 V to 30 V supply rail and switches between 200 kHz and 400 kHz, set by an external timing resistor. The 99% maximum duty cycle lets it maintain regulation through deep-dropout conditions where the input falls close to the output. ## Industrial temperature range and QFN footprint The 32-lead WFQFN with exposed pad (5 mm × 5 mm) pulls heat into the PCB ground plane; the datasheet's recommended land pattern and thermal-via array are required to keep the junction below the 85°C ceiling at full load. Control features include current limit, enable, power-good flag, and a programmable soft-start that ramps the output without inrush overshoot. The synchronous rectifier driver eliminates the freewheeling Schottky diode in most designs — the external bottom MOSFET's body diode handles the dead-time conduction, and the synchronous switch recovers the inductor energy that a diode would dissipate. The 32-QFN (5×5) package is MSL-1 per J-STD-020 (moisture sensitivity level 1), meaning no bake required before reflow if the shelf life in the sealed bag has not been exceeded.","metaTitle":"LTC3780EUH#TRPBF Buck-Boost Controller, 4-30V, 32-QFN","metaDescription":"LTC3780EUH#TRPBF from Analog Devices — active buck-boost controller, 4V to 30V supply, 200-400kHz switching, 32-QFN. RoHS3 compliant. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Analog & Data Acquisition"],"specifications":{"Package":"Tape & Reel (TR); Cut Tape (CT)","Function":"Step-Up/Step-Down","Topology":"Buck-Boost","Clock Sync":"No","Output Type":"Transistor Driver","Mounting Type":"Surface Mount","Output Phases":"1","Package / Case":"32-WFQFN Exposed Pad","lifecycle_stage":"eol_hot","Control Features":"Current Limit, Enable, Power Good, Soft Start","Duty Cycle (Max)":"99%","Number of Outputs":"1","Output Configuration":"Positive","Frequency - Switching":"200kHz ~ 400kHz","Operating Temperature":"-40°C ~ 85°C (TJ)","Synchronous Rectifier":"Yes","Supplier Device Package":"32-QFN (5x5)","Voltage - Supply (Vcc/Vdd)":"4V ~ 30V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$12.47","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$12.47000","currency":"USD"},{"qty":10,"price":"$11.45600","currency":"USD"},{"qty":25,"price":"$10.98160","currency":"USD"},{"qty":100,"price":"$9.67570","currency":"USD"},{"qty":250,"price":"$9.20080","currency":"USD"},{"qty":500,"price":"$8.60720","currency":"USD"},{"qty":1000,"price":"$8.40000","currency":"USD"},{"qty":2500,"price":"$8.40000","currency":"USD"}]},"links":{"datasheetUrl":null,"sourceUrl":null},"ai":{"faq":[{"question":"What is the closest functional alternative to LTC3780EUH#TRPBF?","answer":"The LTC3891EUDC#TRPBF is a step-down (buck) controller only — it cannot boost the output above the input rail. If the application requires buck-boost regulation (input above, below, or equal to output), the LTC3780EUH#TRPBF is the correct topology. The LTC3891 also switches at a fixed 105 kHz, versus the 200-400 kHz range of the LTC3780, so the inductor and capacitor values differ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/LTC3780EUH~4TRPBF","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/LTC3780EUH~4TRPBF 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}}