{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"LTC3251EMSE#PBF","brand":"Analog Devices","brandSlug":"analog-devices","productSlug":"LTC3251EMSEPBF","canonicalUrl":"https://icboms.com/analog-devices/LTC3251EMSEPBF","factsUrl":"https://icboms.com/api/mcp/products/LTC3251EMSE%23PBF","rawCanonicalId":null},"summary":{"shortDescription":"Analog Devices LTC3251EMSE#PBF, Step-Down Charge Pump Regulator, Adjustable Output, 500 mA, 10-MSOP-EP Exposed Pad, -40°C to 85°C, Tube.","salesMarkdown":"## Part identity and switching topology The LTC3251EMSE#PBF from Analog Devices (ADI) is a step-down charge-pump regulator delivering up to 500 mA from a 2.7 V to 5.5 V input rail. Unlike an inductor-based buck converter, the charge-pump topology uses only flying capacitors — no magnetic component — which keeps the board profile low and radiated EMI minimal. Output is adjustable from 0.9 V down to 1.6 V, making it a fit for powering low-voltage digital cores, I/O banks, or sensor rails in space-constrained designs. The part switches between 1 MHz and 1.6 MHz, which lets the designer use small ceramic capacitors while staying above the AM band. No external Schottky diode is needed — the internal synchronous-rectifier MOSFETs handle the commutation. The exposed pad on the 10-MSOP package pulls heat into the PCB ground plane; at 500 mA with a 3 V drop the pad keeps junction temperature within the -40°C to 85°C operating range.","metaTitle":"LTC3251EMSE#PBF Charge Pump Regulator, 500 mA Adjustable","metaDescription":"ADI LTC3251EMSE#PBF step-down charge pump: 2.7-5.5V input, 0.9-1.6V adjustable output, 500mA, 10-MSOP-EP. Active production, ROHS3 compliant. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":"ROHS3 Compliant","productStatus":"Active","categoryPath":["Discrete Semiconductors"],"specifications":{"Package":"Tube","Function":"Step-Down","Topology":"Charge Pump","Output Type":"Adjustable","Mounting Type":"Surface Mount","Package / Case":"10-TFSOP, 10-MSOP (0.118\\\", 3.00mm Width) Exposed Pad","lifecycle_stage":"eol_hot","Current - Output":"500mA","Number of Outputs":"1","Output Configuration":"Positive","Frequency - Switching":"1MHz ~ 1.6MHz","Operating Temperature":"-40°C ~ 85°C (TA)","Synchronous Rectifier":"No","Voltage - Input (Max)":"5.5V","Voltage - Input (Min)":"2.7V","Voltage - Output (Max)":"1.6V","Supplier Device Package":"10-MSOP-EP","Voltage - Output (Min/Fixed)":"0.9V"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$6.32","stockQuantity":0,"priceTiers":[{"qty":1,"price":"$6.32000","currency":"USD"},{"qty":10,"price":"$5.67300","currency":"USD"},{"qty":25,"price":"$5.36320","currency":"USD"},{"qty":100,"price":"$4.64800","currency":"USD"},{"qty":250,"price":"$4.40968","currency":"USD"},{"qty":500,"price":"$3.95678","currency":"USD"},{"qty":1000,"price":"$3.33704","currency":"USD"},{"qty":2500,"price":"$3.17019","currency":"USD"}]},"links":{"datasheetUrl":"https://cdn.icboms.com/4ae339e1d4afc8dbe99d7b46dbecd2df.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest functional alternative to LTC3251EMSE#PBF?","answer":"The LT3437IDD#PBF is a buck converter with the same 500 mA output capability but uses an inductor instead of a charge pump. It accepts a wider 3 V to 60 V input range and operates up to 125°C junction temperature. Not a pin-for-pin swap, but a functional alternative for designs that can accommodate the inductor."},{"question":"What package does LTC3251EMSE#PBF come in?","answer":"The part is supplied in a 10-lead MSOP with an exposed pad (10-MSOP-EP), shipped in Tube."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://icboms.com/analog-devices/LTC3251EMSEPBF","citationPolicyUrl":"https://icboms.com/llms.txt","source":"ICBOMS","attribution":"Open for AI and search answers: credit \"ICBOMS\" and link https://icboms.com/analog-devices/LTC3251EMSEPBF 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}}